зеркало из https://github.com/mozilla/pjs.git
11871 строка
447 KiB
C++
11871 строка
447 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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// vim:cindent:ts=2:et:sw=2:
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/* ***** BEGIN LICENSE BLOCK *****
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* Version: MPL 1.1/GPL 2.0/LGPL 2.1
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*
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* The contents of this file are subject to the Mozilla Public License Version
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* 1.1 (the "License"); you may not use this file except in compliance with
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* the License. You may obtain a copy of the License at
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* http://www.mozilla.org/MPL/
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*
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* Software distributed under the License is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
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* for the specific language governing rights and limitations under the
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* License.
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*
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* The Original Code is mozilla.org code.
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*
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* The Initial Developer of the Original Code is
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* Netscape Communications Corporation.
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* Portions created by the Initial Developer are Copyright (C) 1998
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* the Initial Developer. All Rights Reserved.
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*
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* Contributor(s):
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* Dan Rosen <dr@netscape.com>
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* Mats Palmgren <matspal@gmail.com>
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*
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* Alternatively, the contents of this file may be used under the terms of
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* either of the GNU General Public License Version 2 or later (the "GPL"),
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* or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
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* in which case the provisions of the GPL or the LGPL are applicable instead
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* of those above. If you wish to allow use of your version of this file only
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* under the terms of either the GPL or the LGPL, and not to allow others to
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* use your version of this file under the terms of the MPL, indicate your
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* decision by deleting the provisions above and replace them with the notice
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* and other provisions required by the GPL or the LGPL. If you do not delete
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* the provisions above, a recipient may use your version of this file under
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* the terms of any one of the MPL, the GPL or the LGPL.
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*
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* ***** END LICENSE BLOCK ***** */
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/*
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* construction of a frame tree that is nearly isomorphic to the content
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* tree and updating of that tree in response to dynamic changes
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*/
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#include "nsCSSFrameConstructor.h"
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#include "nsCRT.h"
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#include "nsIAtom.h"
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#include "nsIURL.h"
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#include "nsHashtable.h"
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#include "nsIHTMLDocument.h"
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#include "nsIStyleRule.h"
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#include "nsIFrame.h"
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#include "nsGkAtoms.h"
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#include "nsPresContext.h"
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#include "nsILinkHandler.h"
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#include "nsIDocument.h"
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#include "nsTableFrame.h"
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#include "nsTableColGroupFrame.h"
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#include "nsTableColFrame.h"
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#include "nsIDOMHTMLDocument.h"
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#include "nsIDOMHTMLTableColElement.h"
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#include "nsIDOMHTMLTableCaptionElem.h"
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#include "nsHTMLParts.h"
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#include "nsIPresShell.h"
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#include "nsUnicharUtils.h"
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#include "nsStyleSet.h"
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#include "nsIViewManager.h"
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#include "nsEventStates.h"
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#include "nsStyleConsts.h"
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#include "nsTableOuterFrame.h"
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#include "nsIDOMXULElement.h"
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#include "nsHTMLContainerFrame.h"
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#include "nsINameSpaceManager.h"
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#include "nsIDOMHTMLSelectElement.h"
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#include "nsIDOMHTMLLegendElement.h"
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#include "nsIComboboxControlFrame.h"
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#include "nsIListControlFrame.h"
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#include "nsISelectControlFrame.h"
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#include "nsIDOMCharacterData.h"
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#include "nsIDOMHTMLImageElement.h"
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#include "nsPlaceholderFrame.h"
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#include "nsTableRowGroupFrame.h"
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#include "nsStyleChangeList.h"
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#include "nsIFormControl.h"
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#include "nsCSSAnonBoxes.h"
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#include "nsTextFragment.h"
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#include "nsIAnonymousContentCreator.h"
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#include "nsFrameManager.h"
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#include "nsLegendFrame.h"
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#include "nsIContentIterator.h"
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#include "nsBoxLayoutState.h"
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#include "nsBindingManager.h"
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#include "nsXBLBinding.h"
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#include "nsITheme.h"
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#include "nsContentCID.h"
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#include "nsContentUtils.h"
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#include "nsIScriptError.h"
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#include "nsIDocShell.h"
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#include "nsIDocShellTreeItem.h"
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#include "nsObjectFrame.h"
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#include "nsRuleNode.h"
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#include "nsIDOMMutationEvent.h"
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#include "nsChildIterator.h"
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#include "nsCSSRendering.h"
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#include "nsLayoutErrors.h"
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#include "nsLayoutUtils.h"
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#include "nsAutoPtr.h"
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#include "nsBoxFrame.h"
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#include "nsBoxLayout.h"
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#include "nsImageFrame.h"
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#include "nsIObjectLoadingContent.h"
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#include "nsContentErrors.h"
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#include "nsIPrincipal.h"
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#include "nsIDOMWindowInternal.h"
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#include "nsStyleUtil.h"
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#include "nsBox.h"
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#include "nsTArray.h"
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#include "nsGenericDOMDataNode.h"
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#include "mozilla/dom/Element.h"
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#include "FrameLayerBuilder.h"
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#ifdef MOZ_XUL
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#include "nsIRootBox.h"
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#include "nsIDOMXULCommandDispatcher.h"
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#include "nsIDOMXULDocument.h"
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#include "nsIXULDocument.h"
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#endif
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#ifdef ACCESSIBILITY
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#include "nsAccessibilityService.h"
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#endif
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#include "nsInlineFrame.h"
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#include "nsBlockFrame.h"
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#include "nsIScrollableFrame.h"
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#include "nsIXBLService.h"
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#undef NOISY_FIRST_LETTER
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#include "nsMathMLParts.h"
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#include "nsSVGFeatures.h"
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#include "nsSVGEffects.h"
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#include "nsSVGUtils.h"
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#include "nsSVGOuterSVGFrame.h"
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#include "nsRefreshDriver.h"
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#include "nsRuleProcessorData.h"
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using namespace mozilla;
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using namespace mozilla::dom;
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nsIFrame*
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NS_NewHTMLCanvasFrame (nsIPresShell* aPresShell, nsStyleContext* aContext);
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#if defined(MOZ_MEDIA)
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nsIFrame*
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NS_NewHTMLVideoFrame (nsIPresShell* aPresShell, nsStyleContext* aContext);
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#endif
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#include "nsSVGTextContainerFrame.h"
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nsIFrame*
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NS_NewSVGOuterSVGFrame(nsIPresShell* aPresShell, nsStyleContext* aContext);
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nsIFrame*
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NS_NewSVGInnerSVGFrame(nsIPresShell* aPresShell, nsStyleContext* aContext);
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nsIFrame*
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NS_NewSVGPathGeometryFrame(nsIPresShell* aPresShell, nsStyleContext* aContext);
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nsIFrame*
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NS_NewSVGGFrame(nsIPresShell* aPresShell, nsStyleContext* aContext);
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nsIFrame*
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NS_NewSVGGenericContainerFrame(nsIPresShell* aPresShell, nsStyleContext* aContext);
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nsIFrame*
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NS_NewSVGForeignObjectFrame(nsIPresShell* aPresShell, nsStyleContext* aContext);
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nsIFrame*
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NS_NewSVGAFrame(nsIPresShell* aPresShell, nsStyleContext* aContext);
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nsIFrame*
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NS_NewSVGGlyphFrame(nsIPresShell* aPresShell, nsStyleContext* aContext);
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nsIFrame*
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NS_NewSVGSwitchFrame(nsIPresShell* aPresShell, nsStyleContext* aContext);
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nsIFrame*
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NS_NewSVGTextFrame(nsIPresShell* aPresShell, nsStyleContext* aContext);
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nsIFrame*
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NS_NewSVGTSpanFrame(nsIPresShell* aPresShell, nsStyleContext* aContext);
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nsIFrame*
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NS_NewSVGContainerFrame(nsIPresShell* aPresShell, nsStyleContext* aContext);
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nsIFrame*
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NS_NewSVGUseFrame(nsIPresShell* aPresShell, nsStyleContext* aContext);
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extern nsIFrame*
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NS_NewSVGLinearGradientFrame(nsIPresShell *aPresShell, nsStyleContext* aContext);
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extern nsIFrame*
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NS_NewSVGRadialGradientFrame(nsIPresShell *aPresShell, nsStyleContext* aContext);
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extern nsIFrame*
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NS_NewSVGStopFrame(nsIPresShell *aPresShell, nsStyleContext* aContext);
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nsIFrame*
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NS_NewSVGMarkerFrame(nsIPresShell* aPresShell, nsStyleContext* aContext);
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extern nsIFrame*
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NS_NewSVGImageFrame(nsIPresShell *aPresShell, nsStyleContext* aContext);
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nsIFrame*
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NS_NewSVGClipPathFrame(nsIPresShell* aPresShell, nsStyleContext* aContext);
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nsIFrame*
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NS_NewSVGTextPathFrame(nsIPresShell* aPresShell, nsStyleContext* aContext);
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nsIFrame*
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NS_NewSVGFilterFrame(nsIPresShell *aPresShell, nsStyleContext* aContext);
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nsIFrame*
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NS_NewSVGPatternFrame(nsIPresShell* aPresShell, nsStyleContext* aContext);
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nsIFrame*
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NS_NewSVGMaskFrame(nsIPresShell* aPresShell, nsStyleContext* aContext);
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nsIFrame*
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NS_NewSVGLeafFrame(nsIPresShell* aPresShell, nsStyleContext* aContext);
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#include "nsIDocument.h"
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#include "nsIDOMElement.h"
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#include "nsIDOMNodeList.h"
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#include "nsIDOMDocument.h"
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#include "nsIDOMDocumentXBL.h"
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#include "nsIScrollable.h"
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#include "nsINodeInfo.h"
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#include "prenv.h"
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#include "nsWidgetsCID.h"
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#include "nsNodeInfoManager.h"
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#include "nsContentCreatorFunctions.h"
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#include "nsIServiceManager.h"
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// Global object maintenance
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nsIXBLService * nsCSSFrameConstructor::gXBLService = nsnull;
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#ifdef DEBUG
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// Set the environment variable GECKO_FRAMECTOR_DEBUG_FLAGS to one or
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// more of the following flags (comma separated) for handy debug
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// output.
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static PRBool gNoisyContentUpdates = PR_FALSE;
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static PRBool gReallyNoisyContentUpdates = PR_FALSE;
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static PRBool gNoisyInlineConstruction = PR_FALSE;
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struct FrameCtorDebugFlags {
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const char* name;
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PRBool* on;
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};
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static FrameCtorDebugFlags gFlags[] = {
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{ "content-updates", &gNoisyContentUpdates },
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{ "really-noisy-content-updates", &gReallyNoisyContentUpdates },
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{ "noisy-inline", &gNoisyInlineConstruction }
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};
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#define NUM_DEBUG_FLAGS (sizeof(gFlags) / sizeof(gFlags[0]))
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#endif
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#ifdef MOZ_XUL
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#include "nsMenuFrame.h"
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#include "nsMenuPopupFrame.h"
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#include "nsPopupSetFrame.h"
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#include "nsTreeColFrame.h"
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#include "nsIBoxObject.h"
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#include "nsPIListBoxObject.h"
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#include "nsListBoxBodyFrame.h"
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#include "nsListItemFrame.h"
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#include "nsXULLabelFrame.h"
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//------------------------------------------------------------------
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nsIFrame*
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NS_NewAutoRepeatBoxFrame(nsIPresShell* aPresShell, nsStyleContext* aContext);
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nsIFrame*
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NS_NewRootBoxFrame (nsIPresShell* aPresShell, nsStyleContext* aContext);
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nsIFrame*
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NS_NewDocElementBoxFrame(nsIPresShell* aPresShell, nsStyleContext* aContext);
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nsIFrame*
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NS_NewThumbFrame (nsIPresShell* aPresShell, nsStyleContext* aContext);
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nsIFrame*
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NS_NewDeckFrame (nsIPresShell* aPresShell, nsStyleContext* aContext);
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nsIFrame*
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NS_NewLeafBoxFrame (nsIPresShell* aPresShell, nsStyleContext* aContext);
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nsIFrame*
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NS_NewStackFrame (nsIPresShell* aPresShell, nsStyleContext* aContext);
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nsIFrame*
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NS_NewProgressMeterFrame (nsIPresShell* aPresShell, nsStyleContext* aContext);
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nsIFrame*
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NS_NewImageBoxFrame (nsIPresShell* aPresShell, nsStyleContext* aContext);
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nsIFrame*
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NS_NewTextBoxFrame (nsIPresShell* aPresShell, nsStyleContext* aContext);
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nsIFrame*
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NS_NewGroupBoxFrame (nsIPresShell* aPresShell, nsStyleContext* aContext);
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nsIFrame*
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NS_NewButtonBoxFrame (nsIPresShell* aPresShell, nsStyleContext* aContext);
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nsIFrame*
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NS_NewSplitterFrame (nsIPresShell* aPresShell, nsStyleContext* aContext);
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nsIFrame*
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NS_NewMenuPopupFrame (nsIPresShell* aPresShell, nsStyleContext* aContext);
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nsIFrame*
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NS_NewPopupSetFrame(nsIPresShell* aPresShell, nsStyleContext* aContext);
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nsIFrame*
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NS_NewMenuFrame (nsIPresShell* aPresShell, nsStyleContext* aContext, PRUint32 aFlags);
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nsIFrame*
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NS_NewMenuBarFrame (nsIPresShell* aPresShell, nsStyleContext* aContext);
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nsIFrame*
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NS_NewTreeBodyFrame (nsIPresShell* aPresShell, nsStyleContext* aContext);
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// grid
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nsresult
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NS_NewGridLayout2 ( nsIPresShell* aPresShell, nsBoxLayout** aNewLayout );
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nsIFrame*
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NS_NewGridRowLeafFrame (nsIPresShell* aPresShell, nsStyleContext* aContext);
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nsIFrame*
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NS_NewGridRowGroupFrame (nsIPresShell* aPresShell, nsStyleContext* aContext);
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// end grid
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nsIFrame*
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NS_NewTitleBarFrame (nsIPresShell* aPresShell, nsStyleContext* aContext);
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nsIFrame*
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NS_NewResizerFrame (nsIPresShell* aPresShell, nsStyleContext* aContext);
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#endif
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nsIFrame*
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NS_NewHTMLScrollFrame (nsIPresShell* aPresShell, nsStyleContext* aContext, PRBool aIsRoot);
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nsIFrame*
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NS_NewXULScrollFrame (nsIPresShell* aPresShell, nsStyleContext* aContext, PRBool aIsRoot);
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nsIFrame*
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NS_NewSliderFrame (nsIPresShell* aPresShell, nsStyleContext* aContext);
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nsIFrame*
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NS_NewScrollbarFrame (nsIPresShell* aPresShell, nsStyleContext* aContext);
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nsIFrame*
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NS_NewScrollbarButtonFrame (nsIPresShell* aPresShell, nsStyleContext* aContext);
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#ifdef NOISY_FINDFRAME
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static PRInt32 FFWC_totalCount=0;
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static PRInt32 FFWC_doLoop=0;
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static PRInt32 FFWC_doSibling=0;
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static PRInt32 FFWC_recursions=0;
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static PRInt32 FFWC_nextInFlows=0;
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#endif
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static inline nsIFrame*
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GetFieldSetBlockFrame(nsIFrame* aFieldsetFrame)
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{
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// Depends on the fieldset child frame order - see ConstructFieldSetFrame() below.
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nsIFrame* firstChild = aFieldsetFrame->GetFirstChild(nsnull);
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return firstChild && firstChild->GetNextSibling() ? firstChild->GetNextSibling() : firstChild;
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}
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#define FCDATA_DECL(_flags, _func) \
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{ _flags, { (FrameCreationFunc)_func } }
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//----------------------------------------------------------------------
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static PRBool
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IsInlineOutside(nsIFrame* aFrame)
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{
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return aFrame->GetStyleDisplay()->IsInlineOutside();
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}
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/**
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* True if aFrame is an actual inline frame in the sense of non-replaced
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* display:inline CSS boxes. In other words, it can be affected by {ib}
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* splitting and can contain first-letter frames. Basically, this is either an
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* inline frame (positioned or otherwise) or an line frame (this last because
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* it can contain first-letter and because inserting blocks in the middle of it
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* needs to terminate it).
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*/
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static PRBool
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IsInlineFrame(const nsIFrame* aFrame)
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{
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return aFrame->IsFrameOfType(nsIFrame::eLineParticipant);
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}
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/**
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* If any children require a block parent, return the first such child.
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* Otherwise return null.
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*/
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static nsIContent*
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AnyKidsNeedBlockParent(nsIFrame *aFrameList)
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{
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for (nsIFrame *k = aFrameList; k; k = k->GetNextSibling()) {
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// Line participants, such as text and inline frames, can't be
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// directly inside a XUL box; they must be wrapped in an
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// intermediate block.
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if (k->IsFrameOfType(nsIFrame::eLineParticipant)) {
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return k->GetContent();
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}
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}
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return nsnull;
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}
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// Reparent a frame into a wrapper frame that is a child of its old parent.
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static void
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ReparentFrame(nsFrameManager* aFrameManager,
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nsIFrame* aNewParentFrame,
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nsIFrame* aFrame)
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{
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aFrame->SetParent(aNewParentFrame);
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aFrameManager->ReparentStyleContext(aFrame);
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}
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static void
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ReparentFrames(nsFrameManager* aFrameManager,
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nsIFrame* aNewParentFrame,
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const nsFrameList& aFrameList)
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{
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for (nsFrameList::Enumerator e(aFrameList); !e.AtEnd(); e.Next()) {
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ReparentFrame(aFrameManager, aNewParentFrame, e.get());
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}
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}
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//----------------------------------------------------------------------
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//
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// When inline frames get weird and have block frames in them, we
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// annotate them to help us respond to incremental content changes
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// more easily.
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static inline PRBool
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IsFrameSpecial(nsIFrame* aFrame)
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{
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return (aFrame->GetStateBits() & NS_FRAME_IS_SPECIAL) != 0;
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}
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static nsIFrame* GetSpecialSibling(nsIFrame* aFrame)
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{
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NS_PRECONDITION(IsFrameSpecial(aFrame), "Shouldn't call this");
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// We only store the "special sibling" annotation with the first
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// frame in the continuation chain. Walk back to find that frame now.
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return static_cast<nsIFrame*>
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(aFrame->GetFirstContinuation()->
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Properties().Get(nsIFrame::IBSplitSpecialSibling()));
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}
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static nsIFrame* GetSpecialPrevSibling(nsIFrame* aFrame)
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{
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NS_PRECONDITION(IsFrameSpecial(aFrame), "Shouldn't call this");
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// We only store the "special sibling" annotation with the first
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// frame in the continuation chain. Walk back to find that frame now.
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return static_cast<nsIFrame*>
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(aFrame->GetFirstContinuation()->
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Properties().Get(nsIFrame::IBSplitSpecialPrevSibling()));
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}
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static nsIFrame*
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GetLastSpecialSibling(nsIFrame* aFrame, PRBool aReturnEmptyTrailingInline)
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{
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for (nsIFrame *frame = aFrame, *next; ; frame = next) {
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next = GetSpecialSibling(frame);
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if (!next ||
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(!aReturnEmptyTrailingInline && !next->GetFirstChild(nsnull) &&
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!GetSpecialSibling(next))) {
|
|
NS_ASSERTION(!next || !IsInlineOutside(frame),
|
|
"Should have a block here!");
|
|
return frame;
|
|
}
|
|
}
|
|
NS_NOTREACHED("unreachable code");
|
|
return nsnull;
|
|
}
|
|
|
|
static void
|
|
SetFrameIsSpecial(nsIFrame* aFrame, nsIFrame* aSpecialSibling)
|
|
{
|
|
NS_PRECONDITION(aFrame, "bad args!");
|
|
|
|
// We should be the only continuation
|
|
NS_ASSERTION(!aFrame->GetPrevContinuation(),
|
|
"assigning special sibling to other than first continuation!");
|
|
NS_ASSERTION(!aFrame->GetNextContinuation() ||
|
|
IsFrameSpecial(aFrame->GetNextContinuation()),
|
|
"should have no non-special continuations here");
|
|
|
|
// Mark the frame as "special".
|
|
aFrame->AddStateBits(NS_FRAME_IS_SPECIAL);
|
|
|
|
if (aSpecialSibling) {
|
|
NS_ASSERTION(!aSpecialSibling->GetPrevContinuation(),
|
|
"assigning something other than the first continuation as the "
|
|
"special sibling");
|
|
|
|
// Store the "special sibling" (if we were given one) with the
|
|
// first frame in the flow.
|
|
FramePropertyTable* props = aFrame->PresContext()->PropertyTable();
|
|
props->Set(aFrame, nsIFrame::IBSplitSpecialSibling(), aSpecialSibling);
|
|
props->Set(aSpecialSibling, nsIFrame::IBSplitSpecialPrevSibling(), aFrame);
|
|
}
|
|
}
|
|
|
|
static nsIFrame*
|
|
GetIBContainingBlockFor(nsIFrame* aFrame)
|
|
{
|
|
NS_PRECONDITION(IsFrameSpecial(aFrame),
|
|
"GetIBContainingBlockFor() should only be called on known IB frames");
|
|
|
|
// Get the first "normal" ancestor of the target frame.
|
|
nsIFrame* parentFrame;
|
|
do {
|
|
parentFrame = aFrame->GetParent();
|
|
|
|
if (! parentFrame) {
|
|
NS_ERROR("no unsplit block frame in IB hierarchy");
|
|
return aFrame;
|
|
}
|
|
|
|
// Note that we ignore non-special frames which have a pseudo on their
|
|
// style context -- they're not the frames we're looking for! In
|
|
// particular, they may be hiding a real parent that _is_ special.
|
|
if (!IsFrameSpecial(parentFrame) &&
|
|
!parentFrame->GetStyleContext()->GetPseudo())
|
|
break;
|
|
|
|
aFrame = parentFrame;
|
|
} while (1);
|
|
|
|
// post-conditions
|
|
NS_ASSERTION(parentFrame, "no normal ancestor found for special frame in GetIBContainingBlockFor");
|
|
NS_ASSERTION(parentFrame != aFrame, "parentFrame is actually the child frame - bogus reslt");
|
|
|
|
return parentFrame;
|
|
}
|
|
|
|
//----------------------------------------------------------------------
|
|
|
|
// Block/inline frame construction logic. We maintain a few invariants here:
|
|
//
|
|
// 1. Block frames contain block and inline frames.
|
|
//
|
|
// 2. Inline frames only contain inline frames. If an inline parent has a block
|
|
// child then the block child is migrated upward until it lands in a block
|
|
// parent (the inline frames containing block is where it will end up).
|
|
|
|
// After this function returns, aLink is pointing to the first link at or
|
|
// after its starting position for which the next frame is a block. If there
|
|
// is no such link, it points to the end of the list.
|
|
static void
|
|
FindFirstBlock(nsFrameList::FrameLinkEnumerator& aLink)
|
|
{
|
|
for ( ; !aLink.AtEnd(); aLink.Next()) {
|
|
if (!IsInlineOutside(aLink.NextFrame())) {
|
|
return;
|
|
}
|
|
}
|
|
}
|
|
|
|
// This function returns a frame link enumerator pointing to the first link in
|
|
// the list for which the next frame is not block. If there is no such link,
|
|
// it points to the end of the list.
|
|
static nsFrameList::FrameLinkEnumerator
|
|
FindFirstNonBlock(const nsFrameList& aList)
|
|
{
|
|
nsFrameList::FrameLinkEnumerator link(aList);
|
|
for (; !link.AtEnd(); link.Next()) {
|
|
if (IsInlineOutside(link.NextFrame())) {
|
|
break;
|
|
}
|
|
}
|
|
return link;
|
|
}
|
|
|
|
inline void
|
|
SetInitialSingleChild(nsIFrame* aParent, nsIFrame* aFrame)
|
|
{
|
|
NS_PRECONDITION(!aFrame->GetNextSibling(), "Should be using a frame list");
|
|
nsFrameList temp(aFrame, aFrame);
|
|
aParent->SetInitialChildList(nsnull, temp);
|
|
}
|
|
|
|
// -----------------------------------------------------------
|
|
|
|
// Structure used when constructing formatting object trees.
|
|
struct nsFrameItems : public nsFrameList
|
|
{
|
|
// Appends the frame to the end of the list
|
|
void AddChild(nsIFrame* aChild);
|
|
};
|
|
|
|
void
|
|
nsFrameItems::AddChild(nsIFrame* aChild)
|
|
{
|
|
NS_PRECONDITION(aChild, "nsFrameItems::AddChild");
|
|
|
|
// It'd be really nice if we could just AppendFrames(nsnull, aChild) here,
|
|
// but some of our callers put frames that have different
|
|
// parents (caption, I'm looking at you) on the same framelist, and
|
|
// nsFrameList asserts if you try to do that.
|
|
if (IsEmpty()) {
|
|
SetFrames(aChild);
|
|
}
|
|
else {
|
|
NS_ASSERTION(aChild != mLastChild,
|
|
"Same frame being added to frame list twice?");
|
|
mLastChild->SetNextSibling(aChild);
|
|
mLastChild = nsLayoutUtils::GetLastSibling(aChild);
|
|
}
|
|
}
|
|
|
|
// -----------------------------------------------------------
|
|
|
|
// Structure used when constructing formatting object trees. Contains
|
|
// state information needed for absolutely positioned elements
|
|
struct nsAbsoluteItems : nsFrameItems {
|
|
// containing block for absolutely positioned elements
|
|
nsIFrame* containingBlock;
|
|
|
|
nsAbsoluteItems(nsIFrame* aContainingBlock);
|
|
#ifdef DEBUG
|
|
// XXXbz Does this need a debug-only assignment operator that nulls out the
|
|
// childList in the nsAbsoluteItems we're copying? Introducing a difference
|
|
// between debug and non-debug behavior seems bad, so I guess not...
|
|
~nsAbsoluteItems() {
|
|
NS_ASSERTION(!FirstChild(),
|
|
"Dangling child list. Someone forgot to insert it?");
|
|
}
|
|
#endif
|
|
|
|
// Appends the frame to the end of the list
|
|
void AddChild(nsIFrame* aChild);
|
|
};
|
|
|
|
nsAbsoluteItems::nsAbsoluteItems(nsIFrame* aContainingBlock)
|
|
: containingBlock(aContainingBlock)
|
|
{
|
|
}
|
|
|
|
// Additional behavior is that it sets the frame's NS_FRAME_OUT_OF_FLOW flag
|
|
void
|
|
nsAbsoluteItems::AddChild(nsIFrame* aChild)
|
|
{
|
|
NS_ASSERTION(aChild->PresContext()->FrameManager()->
|
|
GetPlaceholderFrameFor(aChild),
|
|
"Child without placeholder being added to nsAbsoluteItems?");
|
|
aChild->AddStateBits(NS_FRAME_OUT_OF_FLOW);
|
|
nsFrameItems::AddChild(aChild);
|
|
}
|
|
|
|
// -----------------------------------------------------------
|
|
|
|
// Structure for saving the existing state when pushing/poping containing
|
|
// blocks. The destructor restores the state to its previous state
|
|
class NS_STACK_CLASS nsFrameConstructorSaveState {
|
|
public:
|
|
nsFrameConstructorSaveState();
|
|
~nsFrameConstructorSaveState();
|
|
|
|
private:
|
|
nsAbsoluteItems* mItems; // pointer to struct whose data we save/restore
|
|
PRPackedBool* mFixedPosIsAbsPos;
|
|
|
|
nsAbsoluteItems mSavedItems; // copy of original data
|
|
PRPackedBool mSavedFixedPosIsAbsPos;
|
|
|
|
// The name of the child list in which our frames would belong
|
|
nsIAtom* mChildListName;
|
|
nsFrameConstructorState* mState;
|
|
|
|
friend class nsFrameConstructorState;
|
|
};
|
|
|
|
// Structure used to keep track of a list of bindings we need to call
|
|
// AddToAttachedQueue on. These should be in post-order depth-first
|
|
// flattened tree traversal order.
|
|
struct PendingBinding : public PRCList
|
|
{
|
|
#ifdef NS_BUILD_REFCNT_LOGGING
|
|
PendingBinding() {
|
|
MOZ_COUNT_CTOR(PendingBinding);
|
|
}
|
|
~PendingBinding() {
|
|
MOZ_COUNT_DTOR(PendingBinding);
|
|
}
|
|
#endif
|
|
|
|
nsRefPtr<nsXBLBinding> mBinding;
|
|
};
|
|
|
|
// Structure used for maintaining state information during the
|
|
// frame construction process
|
|
class NS_STACK_CLASS nsFrameConstructorState {
|
|
public:
|
|
nsPresContext *mPresContext;
|
|
nsIPresShell *mPresShell;
|
|
nsFrameManager *mFrameManager;
|
|
|
|
#ifdef MOZ_XUL
|
|
// Frames destined for the nsGkAtoms::popupList.
|
|
nsAbsoluteItems mPopupItems;
|
|
#endif
|
|
|
|
// Containing block information for out-of-flow frames.
|
|
nsAbsoluteItems mFixedItems;
|
|
nsAbsoluteItems mAbsoluteItems;
|
|
nsAbsoluteItems mFloatedItems;
|
|
|
|
nsCOMPtr<nsILayoutHistoryState> mFrameState;
|
|
// These bits will be added to the state bits of any frame we construct
|
|
// using this state.
|
|
nsFrameState mAdditionalStateBits;
|
|
|
|
// When working with the -moz-transform property, we want to hook
|
|
// the abs-pos and fixed-pos lists together, since transformed
|
|
// elements are fixed-pos containing blocks. This flag determines
|
|
// whether or not we want to wire the fixed-pos and abs-pos lists
|
|
// together.
|
|
PRPackedBool mFixedPosIsAbsPos;
|
|
|
|
// A boolean to indicate whether we have a "pending" popupgroup. That is, we
|
|
// have already created the FrameConstructionItem for the root popupgroup but
|
|
// we have not yet created the relevant frame.
|
|
PRPackedBool mHavePendingPopupgroup;
|
|
|
|
// If false (which is the default) then call SetPrimaryFrame() as needed
|
|
// during frame construction. If true, don't make any SetPrimaryFrame()
|
|
// calls. The mCreatingExtraFrames == PR_TRUE mode is meant to be used for
|
|
// construction of random "extra" frames for elements via normal frame
|
|
// construction APIs (e.g. replication of things across pages in paginated
|
|
// mode).
|
|
PRPackedBool mCreatingExtraFrames;
|
|
|
|
nsCOMArray<nsIContent> mGeneratedTextNodesWithInitializer;
|
|
|
|
TreeMatchContext mTreeMatchContext;
|
|
|
|
// Constructor
|
|
// Use the passed-in history state.
|
|
nsFrameConstructorState(nsIPresShell* aPresShell,
|
|
nsIFrame* aFixedContainingBlock,
|
|
nsIFrame* aAbsoluteContainingBlock,
|
|
nsIFrame* aFloatContainingBlock,
|
|
nsILayoutHistoryState* aHistoryState);
|
|
// Get the history state from the pres context's pres shell.
|
|
nsFrameConstructorState(nsIPresShell* aPresShell,
|
|
nsIFrame* aFixedContainingBlock,
|
|
nsIFrame* aAbsoluteContainingBlock,
|
|
nsIFrame* aFloatContainingBlock);
|
|
|
|
~nsFrameConstructorState();
|
|
|
|
// Function to push the existing absolute containing block state and
|
|
// create a new scope. Code that uses this function should get matching
|
|
// logic in GetAbsoluteContainingBlock.
|
|
void PushAbsoluteContainingBlock(nsIFrame* aNewAbsoluteContainingBlock,
|
|
nsFrameConstructorSaveState& aSaveState);
|
|
|
|
// Function to push the existing float containing block state and
|
|
// create a new scope. Code that uses this function should get matching
|
|
// logic in GetFloatContainingBlock.
|
|
// Pushing a null float containing block forbids any frames from being
|
|
// floated until a new float containing block is pushed.
|
|
// XXX we should get rid of null float containing blocks and teach the
|
|
// various frame classes to deal with floats instead.
|
|
void PushFloatContainingBlock(nsIFrame* aNewFloatContainingBlock,
|
|
nsFrameConstructorSaveState& aSaveState);
|
|
|
|
// Function to return the proper geometric parent for a frame with display
|
|
// struct given by aStyleDisplay and parent's frame given by
|
|
// aContentParentFrame.
|
|
nsIFrame* GetGeometricParent(const nsStyleDisplay* aStyleDisplay,
|
|
nsIFrame* aContentParentFrame);
|
|
|
|
/**
|
|
* Function to add a new frame to the right frame list. This MUST be called
|
|
* on frames before their children have been processed if the frames might
|
|
* conceivably be out-of-flow; otherwise cleanup in error cases won't work
|
|
* right. Also, this MUST be called on frames after they have been
|
|
* initialized.
|
|
* @param aNewFrame the frame to add
|
|
* @param aFrameItems the list to add in-flow frames to
|
|
* @param aContent the content pointer for aNewFrame
|
|
* @param aStyleContext the style context resolved for aContent
|
|
* @param aParentFrame the parent frame for the content if it were in-flow
|
|
* @param aCanBePositioned pass false if the frame isn't allowed to be
|
|
* positioned
|
|
* @param aCanBeFloated pass false if the frame isn't allowed to be
|
|
* floated
|
|
* @param aIsOutOfFlowPopup pass true if the frame is an out-of-flow popup
|
|
* (XUL-only)
|
|
* @throws NS_ERROR_OUT_OF_MEMORY if it happens.
|
|
* @note If this method throws, that means that aNewFrame was not inserted
|
|
* into any frame lists. Furthermore, this method will handle cleanup
|
|
* of aNewFrame (via calling Destroy() on it).
|
|
*/
|
|
nsresult AddChild(nsIFrame* aNewFrame,
|
|
nsFrameItems& aFrameItems,
|
|
nsIContent* aContent,
|
|
nsStyleContext* aStyleContext,
|
|
nsIFrame* aParentFrame,
|
|
PRBool aCanBePositioned = PR_TRUE,
|
|
PRBool aCanBeFloated = PR_TRUE,
|
|
PRBool aIsOutOfFlowPopup = PR_FALSE,
|
|
PRBool aInsertAfter = PR_FALSE,
|
|
nsIFrame* aInsertAfterFrame = nsnull);
|
|
|
|
/**
|
|
* Function to return the fixed-pos element list. Normally this will just hand back the
|
|
* fixed-pos element list, but in case we're dealing with a transformed element that's
|
|
* acting as an abs-pos and fixed-pos container, we'll hand back the abs-pos list. Callers should
|
|
* use this function if they want to get the list acting as the fixed-pos item parent.
|
|
*/
|
|
nsAbsoluteItems& GetFixedItems()
|
|
{
|
|
return mFixedPosIsAbsPos ? mAbsoluteItems : mFixedItems;
|
|
}
|
|
const nsAbsoluteItems& GetFixedItems() const
|
|
{
|
|
return mFixedPosIsAbsPos ? mAbsoluteItems : mFixedItems;
|
|
}
|
|
|
|
|
|
/**
|
|
* class to automatically push and pop a pending binding in the frame
|
|
* constructor state. See nsCSSFrameConstructor::FrameConstructionItem
|
|
* mPendingBinding documentation.
|
|
*/
|
|
class PendingBindingAutoPusher;
|
|
friend class PendingBindingAutoPusher;
|
|
class NS_STACK_CLASS PendingBindingAutoPusher {
|
|
public:
|
|
PendingBindingAutoPusher(nsFrameConstructorState& aState,
|
|
PendingBinding* aPendingBinding) :
|
|
mState(aState),
|
|
mPendingBinding(aState.mCurrentPendingBindingInsertionPoint)
|
|
{
|
|
NS_PRECONDITION(mPendingBinding, "how did that happen?");
|
|
if (aPendingBinding) {
|
|
aState.mCurrentPendingBindingInsertionPoint = aPendingBinding;
|
|
}
|
|
}
|
|
|
|
~PendingBindingAutoPusher()
|
|
{
|
|
mState.mCurrentPendingBindingInsertionPoint = mPendingBinding;
|
|
}
|
|
|
|
private:
|
|
nsFrameConstructorState& mState;
|
|
PRCList* mPendingBinding;
|
|
};
|
|
|
|
/**
|
|
* Add a new pending binding to the list
|
|
*/
|
|
void AddPendingBinding(PendingBinding* aPendingBinding) {
|
|
PR_INSERT_BEFORE(aPendingBinding, mCurrentPendingBindingInsertionPoint);
|
|
}
|
|
|
|
protected:
|
|
friend class nsFrameConstructorSaveState;
|
|
|
|
/**
|
|
* ProcessFrameInsertions takes the frames in aFrameItems and adds them as
|
|
* kids to the aChildListName child list of |aFrameItems.containingBlock|.
|
|
*/
|
|
void ProcessFrameInsertions(nsAbsoluteItems& aFrameItems,
|
|
nsIAtom* aChildListName);
|
|
|
|
// Our list of all pending bindings. When we're done, we need to call
|
|
// AddToAttachedQueue on all of them, in order.
|
|
PRCList mPendingBindings;
|
|
|
|
PRCList* mCurrentPendingBindingInsertionPoint;
|
|
};
|
|
|
|
nsFrameConstructorState::nsFrameConstructorState(nsIPresShell* aPresShell,
|
|
nsIFrame* aFixedContainingBlock,
|
|
nsIFrame* aAbsoluteContainingBlock,
|
|
nsIFrame* aFloatContainingBlock,
|
|
nsILayoutHistoryState* aHistoryState)
|
|
: mPresContext(aPresShell->GetPresContext()),
|
|
mPresShell(aPresShell),
|
|
mFrameManager(aPresShell->FrameManager()),
|
|
#ifdef MOZ_XUL
|
|
mPopupItems(nsnull),
|
|
#endif
|
|
mFixedItems(aFixedContainingBlock),
|
|
mAbsoluteItems(aAbsoluteContainingBlock),
|
|
mFloatedItems(aFloatContainingBlock),
|
|
// See PushAbsoluteContaningBlock below
|
|
mFrameState(aHistoryState),
|
|
mAdditionalStateBits(0),
|
|
mFixedPosIsAbsPos(aAbsoluteContainingBlock &&
|
|
aAbsoluteContainingBlock->GetStyleDisplay()->
|
|
HasTransform()),
|
|
mHavePendingPopupgroup(PR_FALSE),
|
|
mCreatingExtraFrames(PR_FALSE),
|
|
mTreeMatchContext(PR_TRUE, nsRuleWalker::eRelevantLinkUnvisited,
|
|
aPresShell->GetDocument()),
|
|
mCurrentPendingBindingInsertionPoint(&mPendingBindings)
|
|
{
|
|
#ifdef MOZ_XUL
|
|
nsIRootBox* rootBox = nsIRootBox::GetRootBox(aPresShell);
|
|
if (rootBox) {
|
|
mPopupItems.containingBlock = rootBox->GetPopupSetFrame();
|
|
}
|
|
#endif
|
|
MOZ_COUNT_CTOR(nsFrameConstructorState);
|
|
PR_INIT_CLIST(&mPendingBindings);
|
|
}
|
|
|
|
nsFrameConstructorState::nsFrameConstructorState(nsIPresShell* aPresShell,
|
|
nsIFrame* aFixedContainingBlock,
|
|
nsIFrame* aAbsoluteContainingBlock,
|
|
nsIFrame* aFloatContainingBlock)
|
|
: mPresContext(aPresShell->GetPresContext()),
|
|
mPresShell(aPresShell),
|
|
mFrameManager(aPresShell->FrameManager()),
|
|
#ifdef MOZ_XUL
|
|
mPopupItems(nsnull),
|
|
#endif
|
|
mFixedItems(aFixedContainingBlock),
|
|
mAbsoluteItems(aAbsoluteContainingBlock),
|
|
mFloatedItems(aFloatContainingBlock),
|
|
// See PushAbsoluteContaningBlock below
|
|
mAdditionalStateBits(0),
|
|
mFixedPosIsAbsPos(aAbsoluteContainingBlock &&
|
|
aAbsoluteContainingBlock->GetStyleDisplay()->
|
|
HasTransform()),
|
|
mHavePendingPopupgroup(PR_FALSE),
|
|
mCreatingExtraFrames(PR_FALSE),
|
|
mTreeMatchContext(PR_TRUE, nsRuleWalker::eRelevantLinkUnvisited,
|
|
aPresShell->GetDocument()),
|
|
mCurrentPendingBindingInsertionPoint(&mPendingBindings)
|
|
{
|
|
#ifdef MOZ_XUL
|
|
nsIRootBox* rootBox = nsIRootBox::GetRootBox(aPresShell);
|
|
if (rootBox) {
|
|
mPopupItems.containingBlock = rootBox->GetPopupSetFrame();
|
|
}
|
|
#endif
|
|
MOZ_COUNT_CTOR(nsFrameConstructorState);
|
|
mFrameState = aPresShell->GetDocument()->GetLayoutHistoryState();
|
|
PR_INIT_CLIST(&mPendingBindings);
|
|
}
|
|
|
|
nsFrameConstructorState::~nsFrameConstructorState()
|
|
{
|
|
// Frame order comparison functions only work properly when the placeholders
|
|
// have been inserted into the frame tree. So for example if we have a new float
|
|
// containing the placeholder for a new abs-pos frame, and we process the abs-pos
|
|
// insertion first, then we won't be able to find the right place to insert in
|
|
// in the abs-pos list. So put floats in first, because they can contain placeholders
|
|
// for abs-pos and fixed-pos items whose containing blocks are outside the floats.
|
|
// Then put abs-pos frames in, because they can contain placeholders for fixed-pos
|
|
// items whose containing block is outside the abs-pos frames.
|
|
MOZ_COUNT_DTOR(nsFrameConstructorState);
|
|
ProcessFrameInsertions(mFloatedItems, nsGkAtoms::floatList);
|
|
ProcessFrameInsertions(mAbsoluteItems, nsGkAtoms::absoluteList);
|
|
ProcessFrameInsertions(mFixedItems, nsGkAtoms::fixedList);
|
|
#ifdef MOZ_XUL
|
|
ProcessFrameInsertions(mPopupItems, nsGkAtoms::popupList);
|
|
#endif
|
|
for (PRInt32 i = mGeneratedTextNodesWithInitializer.Count() - 1; i >= 0; --i) {
|
|
mGeneratedTextNodesWithInitializer[i]->
|
|
DeleteProperty(nsGkAtoms::genConInitializerProperty);
|
|
}
|
|
if (!PR_CLIST_IS_EMPTY(&mPendingBindings)) {
|
|
nsBindingManager* bindingManager = mPresShell->GetDocument()->BindingManager();
|
|
do {
|
|
PendingBinding* pendingBinding =
|
|
static_cast<PendingBinding*>(PR_NEXT_LINK(&mPendingBindings));
|
|
PR_REMOVE_LINK(pendingBinding);
|
|
bindingManager->AddToAttachedQueue(pendingBinding->mBinding);
|
|
delete pendingBinding;
|
|
} while (!PR_CLIST_IS_EMPTY(&mPendingBindings));
|
|
}
|
|
}
|
|
|
|
static nsIFrame*
|
|
AdjustAbsoluteContainingBlock(nsIFrame* aContainingBlockIn)
|
|
{
|
|
if (!aContainingBlockIn) {
|
|
return nsnull;
|
|
}
|
|
|
|
// Always use the container's first continuation. (Inline frames can have
|
|
// non-fluid bidi continuations...)
|
|
return aContainingBlockIn->GetFirstContinuation();
|
|
}
|
|
|
|
void
|
|
nsFrameConstructorState::PushAbsoluteContainingBlock(nsIFrame* aNewAbsoluteContainingBlock,
|
|
nsFrameConstructorSaveState& aSaveState)
|
|
{
|
|
aSaveState.mItems = &mAbsoluteItems;
|
|
aSaveState.mSavedItems = mAbsoluteItems;
|
|
aSaveState.mChildListName = nsGkAtoms::absoluteList;
|
|
aSaveState.mState = this;
|
|
|
|
/* Store whether we're wiring the abs-pos and fixed-pos lists together. */
|
|
aSaveState.mFixedPosIsAbsPos = &mFixedPosIsAbsPos;
|
|
aSaveState.mSavedFixedPosIsAbsPos = mFixedPosIsAbsPos;
|
|
|
|
mAbsoluteItems =
|
|
nsAbsoluteItems(AdjustAbsoluteContainingBlock(aNewAbsoluteContainingBlock));
|
|
|
|
/* See if we're wiring the fixed-pos and abs-pos lists together. This happens iff
|
|
* we're a transformed element.
|
|
*/
|
|
mFixedPosIsAbsPos = (aNewAbsoluteContainingBlock &&
|
|
aNewAbsoluteContainingBlock->GetStyleDisplay()->HasTransform());
|
|
}
|
|
|
|
void
|
|
nsFrameConstructorState::PushFloatContainingBlock(nsIFrame* aNewFloatContainingBlock,
|
|
nsFrameConstructorSaveState& aSaveState)
|
|
{
|
|
NS_PRECONDITION(!aNewFloatContainingBlock ||
|
|
aNewFloatContainingBlock->IsFloatContainingBlock(),
|
|
"Please push a real float containing block!");
|
|
aSaveState.mItems = &mFloatedItems;
|
|
aSaveState.mSavedItems = mFloatedItems;
|
|
aSaveState.mChildListName = nsGkAtoms::floatList;
|
|
aSaveState.mState = this;
|
|
mFloatedItems = nsAbsoluteItems(aNewFloatContainingBlock);
|
|
}
|
|
|
|
nsIFrame*
|
|
nsFrameConstructorState::GetGeometricParent(const nsStyleDisplay* aStyleDisplay,
|
|
nsIFrame* aContentParentFrame)
|
|
{
|
|
NS_PRECONDITION(aStyleDisplay, "Must have display struct!");
|
|
|
|
// If there is no container for a fixed, absolute, or floating root
|
|
// frame, we will ignore the positioning. This hack is originally
|
|
// brought to you by the letter T: tables, since other roots don't
|
|
// even call into this code. See bug 178855.
|
|
//
|
|
// XXX Disabling positioning in this case is a hack. If one was so inclined,
|
|
// one could support this either by (1) inserting a dummy block between the
|
|
// table and the canvas or (2) teaching the canvas how to reflow positioned
|
|
// elements. (1) has the usual problems when multiple frames share the same
|
|
// content (notice all the special cases in this file dealing with inner
|
|
// tables and outer tables which share the same content). (2) requires some
|
|
// work and possible factoring.
|
|
//
|
|
// XXXbz couldn't we just force position to "static" on roots and
|
|
// float to "none"? That's OK per CSS 2.1, as far as I can tell.
|
|
|
|
if (aStyleDisplay->IsFloating() && mFloatedItems.containingBlock) {
|
|
NS_ASSERTION(!aStyleDisplay->IsAbsolutelyPositioned(),
|
|
"Absolutely positioned _and_ floating?");
|
|
return mFloatedItems.containingBlock;
|
|
}
|
|
|
|
if (aStyleDisplay->mPosition == NS_STYLE_POSITION_ABSOLUTE &&
|
|
mAbsoluteItems.containingBlock) {
|
|
return mAbsoluteItems.containingBlock;
|
|
}
|
|
|
|
if (aStyleDisplay->mPosition == NS_STYLE_POSITION_FIXED &&
|
|
GetFixedItems().containingBlock) {
|
|
return GetFixedItems().containingBlock;
|
|
}
|
|
|
|
return aContentParentFrame;
|
|
}
|
|
|
|
nsresult
|
|
nsFrameConstructorState::AddChild(nsIFrame* aNewFrame,
|
|
nsFrameItems& aFrameItems,
|
|
nsIContent* aContent,
|
|
nsStyleContext* aStyleContext,
|
|
nsIFrame* aParentFrame,
|
|
PRBool aCanBePositioned,
|
|
PRBool aCanBeFloated,
|
|
PRBool aIsOutOfFlowPopup,
|
|
PRBool aInsertAfter,
|
|
nsIFrame* aInsertAfterFrame)
|
|
{
|
|
NS_PRECONDITION(!aNewFrame->GetNextSibling(), "Shouldn't happen");
|
|
|
|
const nsStyleDisplay* disp = aNewFrame->GetStyleDisplay();
|
|
|
|
// The comments in GetGeometricParent regarding root table frames
|
|
// all apply here, unfortunately.
|
|
|
|
PRBool needPlaceholder = PR_FALSE;
|
|
nsFrameState placeholderType;
|
|
nsFrameItems* frameItems = &aFrameItems;
|
|
#ifdef MOZ_XUL
|
|
if (NS_UNLIKELY(aIsOutOfFlowPopup)) {
|
|
NS_ASSERTION(aNewFrame->GetParent() == mPopupItems.containingBlock,
|
|
"Popup whose parent is not the popup containing block?");
|
|
NS_ASSERTION(mPopupItems.containingBlock, "Must have a popup set frame!");
|
|
needPlaceholder = PR_TRUE;
|
|
frameItems = &mPopupItems;
|
|
placeholderType = PLACEHOLDER_FOR_POPUP;
|
|
}
|
|
else
|
|
#endif // MOZ_XUL
|
|
if (aCanBeFloated && disp->IsFloating() &&
|
|
mFloatedItems.containingBlock) {
|
|
NS_ASSERTION(aNewFrame->GetParent() == mFloatedItems.containingBlock,
|
|
"Float whose parent is not the float containing block?");
|
|
needPlaceholder = PR_TRUE;
|
|
frameItems = &mFloatedItems;
|
|
placeholderType = PLACEHOLDER_FOR_FLOAT;
|
|
}
|
|
else if (aCanBePositioned) {
|
|
if (disp->mPosition == NS_STYLE_POSITION_ABSOLUTE &&
|
|
mAbsoluteItems.containingBlock) {
|
|
NS_ASSERTION(aNewFrame->GetParent() == mAbsoluteItems.containingBlock,
|
|
"Abs pos whose parent is not the abs pos containing block?");
|
|
needPlaceholder = PR_TRUE;
|
|
frameItems = &mAbsoluteItems;
|
|
placeholderType = PLACEHOLDER_FOR_ABSPOS;
|
|
}
|
|
if (disp->mPosition == NS_STYLE_POSITION_FIXED &&
|
|
GetFixedItems().containingBlock) {
|
|
NS_ASSERTION(aNewFrame->GetParent() == GetFixedItems().containingBlock,
|
|
"Fixed pos whose parent is not the fixed pos containing block?");
|
|
needPlaceholder = PR_TRUE;
|
|
frameItems = &GetFixedItems();
|
|
placeholderType = PLACEHOLDER_FOR_FIXEDPOS;
|
|
}
|
|
}
|
|
|
|
if (needPlaceholder) {
|
|
NS_ASSERTION(frameItems != &aFrameItems,
|
|
"Putting frame in-flow _and_ want a placeholder?");
|
|
nsIFrame* placeholderFrame;
|
|
nsresult rv =
|
|
nsCSSFrameConstructor::CreatePlaceholderFrameFor(mPresShell,
|
|
aContent,
|
|
aNewFrame,
|
|
aStyleContext,
|
|
aParentFrame,
|
|
nsnull,
|
|
placeholderType,
|
|
&placeholderFrame);
|
|
if (NS_FAILED(rv)) {
|
|
// Note that aNewFrame could be the top frame for a scrollframe setup,
|
|
// hence already set as the primary frame. So we have to clean up here.
|
|
// But it shouldn't have any out-of-flow kids.
|
|
// XXXbz Maybe add a utility function to assert that?
|
|
aNewFrame->Destroy();
|
|
return rv;
|
|
}
|
|
|
|
placeholderFrame->AddStateBits(mAdditionalStateBits);
|
|
// Add the placeholder frame to the flow
|
|
aFrameItems.AddChild(placeholderFrame);
|
|
}
|
|
#ifdef DEBUG
|
|
else {
|
|
NS_ASSERTION(aNewFrame->GetParent() == aParentFrame,
|
|
"In-flow frame has wrong parent");
|
|
}
|
|
#endif
|
|
|
|
if (aInsertAfter) {
|
|
frameItems->InsertFrame(nsnull, aInsertAfterFrame, aNewFrame);
|
|
} else {
|
|
frameItems->AddChild(aNewFrame);
|
|
}
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
void
|
|
nsFrameConstructorState::ProcessFrameInsertions(nsAbsoluteItems& aFrameItems,
|
|
nsIAtom* aChildListName)
|
|
{
|
|
#define NS_NONXUL_LIST_TEST (&aFrameItems == &mFloatedItems && \
|
|
aChildListName == nsGkAtoms::floatList) || \
|
|
(&aFrameItems == &mAbsoluteItems && \
|
|
aChildListName == nsGkAtoms::absoluteList) || \
|
|
(&aFrameItems == &mFixedItems && \
|
|
aChildListName == nsGkAtoms::fixedList)
|
|
#ifdef MOZ_XUL
|
|
NS_PRECONDITION(NS_NONXUL_LIST_TEST ||
|
|
(&aFrameItems == &mPopupItems &&
|
|
aChildListName == nsGkAtoms::popupList),
|
|
"Unexpected aFrameItems/aChildListName combination");
|
|
#else
|
|
NS_PRECONDITION(NS_NONXUL_LIST_TEST,
|
|
"Unexpected aFrameItems/aChildListName combination");
|
|
#endif
|
|
|
|
if (aFrameItems.IsEmpty()) {
|
|
return;
|
|
}
|
|
|
|
nsIFrame* containingBlock = aFrameItems.containingBlock;
|
|
|
|
NS_ASSERTION(containingBlock,
|
|
"Child list without containing block?");
|
|
|
|
// Insert the frames hanging out in aItems. We can use SetInitialChildList()
|
|
// if the containing block hasn't been reflowed yet (so NS_FRAME_FIRST_REFLOW
|
|
// is set) and doesn't have any frames in the aChildListName child list yet.
|
|
const nsFrameList& childList = containingBlock->GetChildList(aChildListName);
|
|
nsresult rv = NS_OK;
|
|
if (childList.IsEmpty() &&
|
|
(containingBlock->GetStateBits() & NS_FRAME_FIRST_REFLOW)) {
|
|
rv = containingBlock->SetInitialChildList(aChildListName, aFrameItems);
|
|
} else {
|
|
// Note that whether the frame construction context is doing an append or
|
|
// not is not helpful here, since it could be appending to some frame in
|
|
// the middle of the document, which means we're not necessarily
|
|
// appending to the children of the containing block.
|
|
//
|
|
// We need to make sure the 'append to the end of document' case is fast.
|
|
// So first test the last child of the containing block
|
|
nsIFrame* lastChild = childList.LastChild();
|
|
|
|
// CompareTreePosition uses placeholder hierarchy for out of flow frames,
|
|
// so this will make out-of-flows respect the ordering of placeholders,
|
|
// which is great because it takes care of anonymous content.
|
|
nsIFrame* firstNewFrame = aFrameItems.FirstChild();
|
|
if (!lastChild ||
|
|
nsLayoutUtils::CompareTreePosition(lastChild, firstNewFrame, containingBlock) < 0) {
|
|
// no lastChild, or lastChild comes before the new children, so just append
|
|
rv = containingBlock->AppendFrames(aChildListName, aFrameItems);
|
|
} else {
|
|
// try the other children
|
|
nsIFrame* insertionPoint = nsnull;
|
|
for (nsIFrame* f = childList.FirstChild(); f != lastChild;
|
|
f = f->GetNextSibling()) {
|
|
PRInt32 compare =
|
|
nsLayoutUtils::CompareTreePosition(f, firstNewFrame, containingBlock);
|
|
if (compare > 0) {
|
|
// f comes after the new children, so stop here and insert after
|
|
// the previous frame
|
|
break;
|
|
}
|
|
insertionPoint = f;
|
|
}
|
|
rv = containingBlock->InsertFrames(aChildListName, insertionPoint,
|
|
aFrameItems);
|
|
}
|
|
}
|
|
|
|
NS_POSTCONDITION(aFrameItems.IsEmpty(), "How did that happen?");
|
|
|
|
// XXXbz And if NS_FAILED(rv), what? I guess we need to clean up the list
|
|
// and deal with all the placeholders... but what if the placeholders aren't
|
|
// in the document yet? Could that happen?
|
|
NS_ASSERTION(NS_SUCCEEDED(rv), "Frames getting lost!");
|
|
}
|
|
|
|
|
|
nsFrameConstructorSaveState::nsFrameConstructorSaveState()
|
|
: mItems(nsnull),
|
|
mFixedPosIsAbsPos(nsnull),
|
|
mSavedItems(nsnull),
|
|
mSavedFixedPosIsAbsPos(PR_FALSE),
|
|
mChildListName(nsnull),
|
|
mState(nsnull)
|
|
{
|
|
}
|
|
|
|
nsFrameConstructorSaveState::~nsFrameConstructorSaveState()
|
|
{
|
|
// Restore the state
|
|
if (mItems) {
|
|
NS_ASSERTION(mState, "Can't have mItems set without having a state!");
|
|
mState->ProcessFrameInsertions(*mItems, mChildListName);
|
|
*mItems = mSavedItems;
|
|
#ifdef DEBUG
|
|
// We've transferred the child list, so drop the pointer we held to it.
|
|
// Note that this only matters for the assert in ~nsAbsoluteItems.
|
|
mSavedItems.Clear();
|
|
#endif
|
|
}
|
|
if (mFixedPosIsAbsPos) {
|
|
*mFixedPosIsAbsPos = mSavedFixedPosIsAbsPos;
|
|
}
|
|
}
|
|
|
|
static
|
|
PRBool IsBorderCollapse(nsIFrame* aFrame)
|
|
{
|
|
for (nsIFrame* frame = aFrame; frame; frame = frame->GetParent()) {
|
|
if (nsGkAtoms::tableFrame == frame->GetType()) {
|
|
return ((nsTableFrame*)frame)->IsBorderCollapse();
|
|
}
|
|
}
|
|
NS_ASSERTION(PR_FALSE, "program error");
|
|
return PR_FALSE;
|
|
}
|
|
|
|
/**
|
|
* Moves aFrameList from aOldParent to aNewParent. This updates the parent
|
|
* pointer of the frames in the list, and reparents their views as needed.
|
|
* nsFrame::SetParent sets the NS_FRAME_HAS_VIEW bit on aNewParent and its
|
|
* ancestors as needed. Then it sets the list as the initial child list
|
|
* on aNewParent, unless aNewParent either already has kids or has been
|
|
* reflowed; in that case it appends the new frames. Note that this
|
|
* method differs from ReparentFrames in that it doesn't change the kids'
|
|
* style contexts.
|
|
*/
|
|
// XXXbz Since this is only used for {ib} splits, could we just copy the view
|
|
// bits from aOldParent to aNewParent and then use the
|
|
// nsFrameList::ApplySetParent? That would still leave us doing two passes
|
|
// over the list, of course; if we really wanted to we could factor out the
|
|
// relevant part of ReparentFrameViewList, I suppose... Or just get rid of
|
|
// views, which would make most of this function go away.
|
|
static void
|
|
MoveChildrenTo(nsPresContext* aPresContext,
|
|
nsIFrame* aOldParent,
|
|
nsIFrame* aNewParent,
|
|
nsFrameList& aFrameList)
|
|
{
|
|
PRBool sameGrandParent = aOldParent->GetParent() == aNewParent->GetParent();
|
|
|
|
if (aNewParent->HasView() || aOldParent->HasView() || !sameGrandParent) {
|
|
// Move the frames into the new view
|
|
nsContainerFrame::ReparentFrameViewList(aPresContext, aFrameList,
|
|
aOldParent, aNewParent);
|
|
}
|
|
|
|
for (nsFrameList::Enumerator e(aFrameList); !e.AtEnd(); e.Next()) {
|
|
e.get()->SetParent(aNewParent);
|
|
}
|
|
|
|
if (aNewParent->GetChildList(nsnull).IsEmpty() &&
|
|
(aNewParent->GetStateBits() & NS_FRAME_FIRST_REFLOW)) {
|
|
aNewParent->SetInitialChildList(nsnull, aFrameList);
|
|
} else {
|
|
aNewParent->AppendFrames(nsnull, aFrameList);
|
|
}
|
|
}
|
|
|
|
//----------------------------------------------------------------------
|
|
|
|
nsCSSFrameConstructor::nsCSSFrameConstructor(nsIDocument *aDocument,
|
|
nsIPresShell *aPresShell)
|
|
: mDocument(aDocument)
|
|
, mPresShell(aPresShell)
|
|
, mRootElementFrame(nsnull)
|
|
, mRootElementStyleFrame(nsnull)
|
|
, mFixedContainingBlock(nsnull)
|
|
, mDocElementContainingBlock(nsnull)
|
|
, mGfxScrollFrame(nsnull)
|
|
, mPageSequenceFrame(nsnull)
|
|
, mUpdateCount(0)
|
|
, mQuotesDirty(PR_FALSE)
|
|
, mCountersDirty(PR_FALSE)
|
|
, mIsDestroyingFrameTree(PR_FALSE)
|
|
, mRebuildAllStyleData(PR_FALSE)
|
|
, mHasRootAbsPosContainingBlock(PR_FALSE)
|
|
, mObservingRefreshDriver(PR_FALSE)
|
|
, mInStyleRefresh(PR_FALSE)
|
|
, mHoverGeneration(0)
|
|
, mRebuildAllExtraHint(nsChangeHint(0))
|
|
, mPendingRestyles(ELEMENT_HAS_PENDING_RESTYLE |
|
|
ELEMENT_IS_POTENTIAL_RESTYLE_ROOT, this)
|
|
, mPendingAnimationRestyles(ELEMENT_HAS_PENDING_ANIMATION_RESTYLE |
|
|
ELEMENT_IS_POTENTIAL_ANIMATION_RESTYLE_ROOT, this)
|
|
{
|
|
// XXXbz this should be in Init() or something!
|
|
if (!mPendingRestyles.Init() || !mPendingAnimationRestyles.Init()) {
|
|
// now what?
|
|
}
|
|
|
|
#ifdef DEBUG
|
|
static PRBool gFirstTime = PR_TRUE;
|
|
if (gFirstTime) {
|
|
gFirstTime = PR_FALSE;
|
|
char* flags = PR_GetEnv("GECKO_FRAMECTOR_DEBUG_FLAGS");
|
|
if (flags) {
|
|
PRBool error = PR_FALSE;
|
|
for (;;) {
|
|
char* comma = PL_strchr(flags, ',');
|
|
if (comma)
|
|
*comma = '\0';
|
|
|
|
PRBool found = PR_FALSE;
|
|
FrameCtorDebugFlags* flag = gFlags;
|
|
FrameCtorDebugFlags* limit = gFlags + NUM_DEBUG_FLAGS;
|
|
while (flag < limit) {
|
|
if (PL_strcasecmp(flag->name, flags) == 0) {
|
|
*(flag->on) = PR_TRUE;
|
|
printf("nsCSSFrameConstructor: setting %s debug flag on\n", flag->name);
|
|
found = PR_TRUE;
|
|
break;
|
|
}
|
|
++flag;
|
|
}
|
|
|
|
if (! found)
|
|
error = PR_TRUE;
|
|
|
|
if (! comma)
|
|
break;
|
|
|
|
*comma = ',';
|
|
flags = comma + 1;
|
|
}
|
|
|
|
if (error) {
|
|
printf("Here are the available GECKO_FRAMECTOR_DEBUG_FLAGS:\n");
|
|
FrameCtorDebugFlags* flag = gFlags;
|
|
FrameCtorDebugFlags* limit = gFlags + NUM_DEBUG_FLAGS;
|
|
while (flag < limit) {
|
|
printf(" %s\n", flag->name);
|
|
++flag;
|
|
}
|
|
printf("Note: GECKO_FRAMECTOR_DEBUG_FLAGS is a comma separated list of flag\n");
|
|
printf("names (no whitespace)\n");
|
|
}
|
|
}
|
|
}
|
|
#endif
|
|
}
|
|
|
|
nsIXBLService * nsCSSFrameConstructor::GetXBLService()
|
|
{
|
|
if (!gXBLService) {
|
|
nsresult rv = CallGetService("@mozilla.org/xbl;1", &gXBLService);
|
|
if (NS_FAILED(rv))
|
|
gXBLService = nsnull;
|
|
}
|
|
|
|
return gXBLService;
|
|
}
|
|
|
|
void
|
|
nsCSSFrameConstructor::NotifyDestroyingFrame(nsIFrame* aFrame)
|
|
{
|
|
NS_PRECONDITION(mUpdateCount != 0,
|
|
"Should be in an update while destroying frames");
|
|
|
|
if (aFrame->GetStateBits() & NS_FRAME_GENERATED_CONTENT) {
|
|
if (mQuoteList.DestroyNodesFor(aFrame))
|
|
QuotesDirty();
|
|
}
|
|
|
|
if (mCounterManager.DestroyNodesFor(aFrame)) {
|
|
// Technically we don't need to update anything if we destroyed only
|
|
// USE nodes. However, this is unlikely to happen in the real world
|
|
// since USE nodes generally go along with INCREMENT nodes.
|
|
CountersDirty();
|
|
}
|
|
}
|
|
|
|
struct nsGenConInitializer {
|
|
nsAutoPtr<nsGenConNode> mNode;
|
|
nsGenConList* mList;
|
|
void (nsCSSFrameConstructor::*mDirtyAll)();
|
|
|
|
nsGenConInitializer(nsGenConNode* aNode, nsGenConList* aList,
|
|
void (nsCSSFrameConstructor::*aDirtyAll)())
|
|
: mNode(aNode), mList(aList), mDirtyAll(aDirtyAll) {}
|
|
};
|
|
|
|
static void
|
|
DestroyGenConInitializer(void* aFrame,
|
|
nsIAtom* aPropertyName,
|
|
void* aPropertyValue,
|
|
void* aDtorData)
|
|
{
|
|
delete static_cast<nsGenConInitializer*>(aPropertyValue);
|
|
}
|
|
|
|
already_AddRefed<nsIContent>
|
|
nsCSSFrameConstructor::CreateGenConTextNode(nsFrameConstructorState& aState,
|
|
const nsString& aString,
|
|
nsCOMPtr<nsIDOMCharacterData>* aText,
|
|
nsGenConInitializer* aInitializer)
|
|
{
|
|
nsCOMPtr<nsIContent> content;
|
|
NS_NewTextNode(getter_AddRefs(content), mDocument->NodeInfoManager());
|
|
if (!content) {
|
|
// XXX The quotes/counters code doesn't like the text pointer
|
|
// being null in case of dynamic changes!
|
|
NS_ASSERTION(!aText, "this OOM case isn't handled very well");
|
|
return nsnull;
|
|
}
|
|
content->SetText(aString, PR_FALSE);
|
|
if (aText) {
|
|
*aText = do_QueryInterface(content);
|
|
}
|
|
if (aInitializer) {
|
|
content->SetProperty(nsGkAtoms::genConInitializerProperty, aInitializer,
|
|
DestroyGenConInitializer);
|
|
aState.mGeneratedTextNodesWithInitializer.AppendObject(content);
|
|
}
|
|
return content.forget();
|
|
}
|
|
|
|
already_AddRefed<nsIContent>
|
|
nsCSSFrameConstructor::CreateGeneratedContent(nsFrameConstructorState& aState,
|
|
nsIContent* aParentContent,
|
|
nsStyleContext* aStyleContext,
|
|
PRUint32 aContentIndex)
|
|
{
|
|
// Get the content value
|
|
const nsStyleContentData &data =
|
|
aStyleContext->GetStyleContent()->ContentAt(aContentIndex);
|
|
nsStyleContentType type = data.mType;
|
|
|
|
if (eStyleContentType_Image == type) {
|
|
if (!data.mContent.mImage) {
|
|
// CSS had something specified that couldn't be converted to an
|
|
// image object
|
|
return nsnull;
|
|
}
|
|
|
|
// Create an image content object and pass it the image request.
|
|
// XXX Check if it's an image type we can handle...
|
|
|
|
nsCOMPtr<nsINodeInfo> nodeInfo;
|
|
nodeInfo = mDocument->NodeInfoManager()->
|
|
GetNodeInfo(nsGkAtoms::mozgeneratedcontentimage, nsnull,
|
|
kNameSpaceID_XHTML, nsIDOMNode::ELEMENT_NODE);
|
|
|
|
nsCOMPtr<nsIContent> content;
|
|
NS_NewGenConImageContent(getter_AddRefs(content), nodeInfo.forget(),
|
|
data.mContent.mImage);
|
|
return content.forget();
|
|
}
|
|
|
|
switch (type) {
|
|
case eStyleContentType_String:
|
|
return CreateGenConTextNode(aState,
|
|
nsDependentString(data.mContent.mString),
|
|
nsnull, nsnull);
|
|
|
|
case eStyleContentType_Attr:
|
|
{
|
|
nsCOMPtr<nsIAtom> attrName;
|
|
PRInt32 attrNameSpace = kNameSpaceID_None;
|
|
nsAutoString contentString(data.mContent.mString);
|
|
|
|
PRInt32 barIndex = contentString.FindChar('|'); // CSS namespace delimiter
|
|
if (-1 != barIndex) {
|
|
nsAutoString nameSpaceVal;
|
|
contentString.Left(nameSpaceVal, barIndex);
|
|
PRInt32 error;
|
|
attrNameSpace = nameSpaceVal.ToInteger(&error, 10);
|
|
contentString.Cut(0, barIndex + 1);
|
|
if (contentString.Length()) {
|
|
if (mDocument->IsHTML() && aParentContent->IsHTML()) {
|
|
ToLowerCase(contentString);
|
|
}
|
|
attrName = do_GetAtom(contentString);
|
|
}
|
|
}
|
|
else {
|
|
if (mDocument->IsHTML() && aParentContent->IsHTML()) {
|
|
ToLowerCase(contentString);
|
|
}
|
|
attrName = do_GetAtom(contentString);
|
|
}
|
|
|
|
if (!attrName) {
|
|
return nsnull;
|
|
}
|
|
|
|
nsCOMPtr<nsIContent> content;
|
|
NS_NewAttributeContent(mDocument->NodeInfoManager(),
|
|
attrNameSpace, attrName, getter_AddRefs(content));
|
|
return content.forget();
|
|
}
|
|
|
|
case eStyleContentType_Counter:
|
|
case eStyleContentType_Counters:
|
|
{
|
|
nsCSSValue::Array* counters = data.mContent.mCounters;
|
|
nsCounterList* counterList = mCounterManager.CounterListFor(
|
|
nsDependentString(counters->Item(0).GetStringBufferValue()));
|
|
if (!counterList)
|
|
return nsnull;
|
|
|
|
nsCounterUseNode* node =
|
|
new nsCounterUseNode(counters, aContentIndex,
|
|
type == eStyleContentType_Counters);
|
|
|
|
nsGenConInitializer* initializer =
|
|
new nsGenConInitializer(node, counterList,
|
|
&nsCSSFrameConstructor::CountersDirty);
|
|
return CreateGenConTextNode(aState, EmptyString(), &node->mText,
|
|
initializer);
|
|
}
|
|
|
|
case eStyleContentType_Image:
|
|
NS_NOTREACHED("handled by if above");
|
|
return nsnull;
|
|
|
|
case eStyleContentType_OpenQuote:
|
|
case eStyleContentType_CloseQuote:
|
|
case eStyleContentType_NoOpenQuote:
|
|
case eStyleContentType_NoCloseQuote:
|
|
{
|
|
nsQuoteNode* node =
|
|
new nsQuoteNode(type, aContentIndex);
|
|
|
|
nsGenConInitializer* initializer =
|
|
new nsGenConInitializer(node, &mQuoteList,
|
|
&nsCSSFrameConstructor::QuotesDirty);
|
|
return CreateGenConTextNode(aState, EmptyString(), &node->mText,
|
|
initializer);
|
|
}
|
|
|
|
case eStyleContentType_AltContent:
|
|
{
|
|
// Use the "alt" attribute; if that fails and the node is an HTML
|
|
// <input>, try the value attribute and then fall back to some default
|
|
// localized text we have.
|
|
// XXX what if the 'alt' attribute is added later, how will we
|
|
// detect that and do the right thing here?
|
|
if (aParentContent->HasAttr(kNameSpaceID_None, nsGkAtoms::alt)) {
|
|
nsCOMPtr<nsIContent> content;
|
|
NS_NewAttributeContent(mDocument->NodeInfoManager(),
|
|
kNameSpaceID_None, nsGkAtoms::alt, getter_AddRefs(content));
|
|
return content.forget();
|
|
}
|
|
|
|
if (aParentContent->IsHTML() &&
|
|
aParentContent->NodeInfo()->Equals(nsGkAtoms::input)) {
|
|
if (aParentContent->HasAttr(kNameSpaceID_None, nsGkAtoms::value)) {
|
|
nsCOMPtr<nsIContent> content;
|
|
NS_NewAttributeContent(mDocument->NodeInfoManager(),
|
|
kNameSpaceID_None, nsGkAtoms::value, getter_AddRefs(content));
|
|
return content.forget();
|
|
}
|
|
|
|
nsXPIDLString temp;
|
|
nsContentUtils::GetLocalizedString(nsContentUtils::eFORMS_PROPERTIES,
|
|
"Submit", temp);
|
|
return CreateGenConTextNode(aState, temp, nsnull, nsnull);
|
|
}
|
|
|
|
break;
|
|
}
|
|
} // switch
|
|
|
|
return nsnull;
|
|
}
|
|
|
|
/*
|
|
* aParentFrame - the frame that should be the parent of the generated
|
|
* content. This is the frame for the corresponding content node,
|
|
* which must not be a leaf frame.
|
|
*
|
|
* Any items created are added to aItems.
|
|
*
|
|
* We create an XML element (tag _moz_generated_content_before or
|
|
* _moz_generated_content_after) representing the pseudoelement. We
|
|
* create a DOM node for each 'content' item and make those nodes the
|
|
* children of the XML element. Then we create a frame subtree for
|
|
* the XML element as if it were a regular child of
|
|
* aParentFrame/aParentContent, giving the XML element the ::before or
|
|
* ::after style.
|
|
*/
|
|
void
|
|
nsCSSFrameConstructor::CreateGeneratedContentItem(nsFrameConstructorState& aState,
|
|
nsIFrame* aParentFrame,
|
|
nsIContent* aParentContent,
|
|
nsStyleContext* aStyleContext,
|
|
nsCSSPseudoElements::Type aPseudoElement,
|
|
FrameConstructionItemList& aItems)
|
|
{
|
|
// XXXbz is this ever true?
|
|
if (!aParentContent->IsElement()) {
|
|
NS_ERROR("Bogus generated content parent");
|
|
return;
|
|
}
|
|
|
|
nsStyleSet *styleSet = mPresShell->StyleSet();
|
|
|
|
// Probe for the existence of the pseudo-element
|
|
nsRefPtr<nsStyleContext> pseudoStyleContext;
|
|
pseudoStyleContext =
|
|
styleSet->ProbePseudoElementStyle(aParentContent->AsElement(),
|
|
aPseudoElement,
|
|
aStyleContext,
|
|
aState.mTreeMatchContext);
|
|
if (!pseudoStyleContext)
|
|
return;
|
|
// |ProbePseudoStyleFor| checked the 'display' property and the
|
|
// |ContentCount()| of the 'content' property for us.
|
|
nsCOMPtr<nsINodeInfo> nodeInfo;
|
|
nsIAtom* elemName = aPseudoElement == nsCSSPseudoElements::ePseudo_before ?
|
|
nsGkAtoms::mozgeneratedcontentbefore : nsGkAtoms::mozgeneratedcontentafter;
|
|
nodeInfo = mDocument->NodeInfoManager()->GetNodeInfo(elemName, nsnull,
|
|
kNameSpaceID_None,
|
|
nsIDOMNode::ELEMENT_NODE);
|
|
nsCOMPtr<nsIContent> container;
|
|
nsresult rv = NS_NewXMLElement(getter_AddRefs(container), nodeInfo.forget());
|
|
if (NS_FAILED(rv))
|
|
return;
|
|
container->SetNativeAnonymous();
|
|
|
|
rv = container->BindToTree(mDocument, aParentContent, aParentContent, PR_TRUE);
|
|
if (NS_FAILED(rv)) {
|
|
container->UnbindFromTree();
|
|
return;
|
|
}
|
|
|
|
PRUint32 contentCount = pseudoStyleContext->GetStyleContent()->ContentCount();
|
|
for (PRUint32 contentIndex = 0; contentIndex < contentCount; contentIndex++) {
|
|
nsCOMPtr<nsIContent> content =
|
|
CreateGeneratedContent(aState, aParentContent, pseudoStyleContext,
|
|
contentIndex);
|
|
if (content) {
|
|
container->AppendChildTo(content, PR_FALSE);
|
|
}
|
|
}
|
|
|
|
AddFrameConstructionItemsInternal(aState, container, aParentFrame, elemName,
|
|
kNameSpaceID_None, PR_TRUE,
|
|
pseudoStyleContext,
|
|
ITEM_IS_GENERATED_CONTENT, aItems);
|
|
}
|
|
|
|
/****************************************************
|
|
** BEGIN TABLE SECTION
|
|
****************************************************/
|
|
|
|
// The term pseudo frame is being used instead of anonymous frame, since anonymous
|
|
// frame has been used elsewhere to refer to frames that have generated content
|
|
|
|
static PRBool
|
|
IsTableRelated(nsIAtom* aParentType)
|
|
{
|
|
return
|
|
nsGkAtoms::tableOuterFrame == aParentType ||
|
|
nsGkAtoms::tableFrame == aParentType ||
|
|
nsGkAtoms::tableRowGroupFrame == aParentType ||
|
|
nsGkAtoms::tableRowFrame == aParentType ||
|
|
nsGkAtoms::tableCaptionFrame == aParentType ||
|
|
nsGkAtoms::tableColGroupFrame == aParentType ||
|
|
nsGkAtoms::tableColFrame == aParentType ||
|
|
IS_TABLE_CELL(aParentType);
|
|
}
|
|
|
|
// Return whether the given frame is a table pseudo-frame. Note that
|
|
// cell-content and table-outer frames have pseudo-types, but are always
|
|
// created, even for non-anonymous cells and tables respectively. So for those
|
|
// we have to examine the cell or table frame to see whether it's a pseudo
|
|
// frame. In particular, a lone table caption will have an outer table as its
|
|
// parent, but will also trigger construction of an empty inner table, which
|
|
// will be the one we can examine to see whether the outer was a pseudo-frame.
|
|
static PRBool
|
|
IsTablePseudo(nsIFrame* aFrame)
|
|
{
|
|
nsIAtom* pseudoType = aFrame->GetStyleContext()->GetPseudo();
|
|
return pseudoType &&
|
|
(pseudoType == nsCSSAnonBoxes::table ||
|
|
pseudoType == nsCSSAnonBoxes::inlineTable ||
|
|
pseudoType == nsCSSAnonBoxes::tableColGroup ||
|
|
pseudoType == nsCSSAnonBoxes::tableRowGroup ||
|
|
pseudoType == nsCSSAnonBoxes::tableRow ||
|
|
pseudoType == nsCSSAnonBoxes::tableCell ||
|
|
(pseudoType == nsCSSAnonBoxes::cellContent &&
|
|
aFrame->GetParent()->GetStyleContext()->GetPseudo() ==
|
|
nsCSSAnonBoxes::tableCell) ||
|
|
(pseudoType == nsCSSAnonBoxes::tableOuter &&
|
|
(aFrame->GetFirstChild(nsnull)->GetStyleContext()->GetPseudo() ==
|
|
nsCSSAnonBoxes::table ||
|
|
aFrame->GetFirstChild(nsnull)->GetStyleContext()->GetPseudo() ==
|
|
nsCSSAnonBoxes::inlineTable)));
|
|
}
|
|
|
|
/* static */
|
|
nsCSSFrameConstructor::ParentType
|
|
nsCSSFrameConstructor::GetParentType(nsIAtom* aFrameType)
|
|
{
|
|
if (aFrameType == nsGkAtoms::tableFrame) {
|
|
return eTypeTable;
|
|
}
|
|
if (aFrameType == nsGkAtoms::tableRowGroupFrame) {
|
|
return eTypeRowGroup;
|
|
}
|
|
if (aFrameType == nsGkAtoms::tableRowFrame) {
|
|
return eTypeRow;
|
|
}
|
|
if (aFrameType == nsGkAtoms::tableColGroupFrame) {
|
|
return eTypeColGroup;
|
|
}
|
|
|
|
return eTypeBlock;
|
|
}
|
|
|
|
static nsIFrame*
|
|
AdjustCaptionParentFrame(nsIFrame* aParentFrame)
|
|
{
|
|
if (nsGkAtoms::tableFrame == aParentFrame->GetType()) {
|
|
return aParentFrame->GetParent();;
|
|
}
|
|
return aParentFrame;
|
|
}
|
|
|
|
/**
|
|
* If the parent frame is a |tableFrame| and the child is a
|
|
* |captionFrame|, then we want to insert the frames beneath the
|
|
* |tableFrame|'s parent frame. Returns |PR_TRUE| if the parent frame
|
|
* needed to be fixed up.
|
|
*/
|
|
static PRBool
|
|
GetCaptionAdjustedParent(nsIFrame* aParentFrame,
|
|
const nsIFrame* aChildFrame,
|
|
nsIFrame** aAdjParentFrame)
|
|
{
|
|
*aAdjParentFrame = aParentFrame;
|
|
PRBool haveCaption = PR_FALSE;
|
|
|
|
if (nsGkAtoms::tableCaptionFrame == aChildFrame->GetType()) {
|
|
haveCaption = PR_TRUE;
|
|
*aAdjParentFrame = AdjustCaptionParentFrame(aParentFrame);
|
|
}
|
|
return haveCaption;
|
|
}
|
|
|
|
void
|
|
nsCSSFrameConstructor::AdjustParentFrame(nsIFrame* & aParentFrame,
|
|
const FrameConstructionData* aFCData,
|
|
nsStyleContext* aStyleContext)
|
|
{
|
|
NS_PRECONDITION(aStyleContext, "Must have child's style context");
|
|
NS_PRECONDITION(aFCData, "Must have frame construction data");
|
|
|
|
PRBool tablePart = ((aFCData->mBits & FCDATA_IS_TABLE_PART) != 0);
|
|
|
|
if (tablePart && aStyleContext->GetStyleDisplay()->mDisplay ==
|
|
NS_STYLE_DISPLAY_TABLE_CAPTION) {
|
|
aParentFrame = AdjustCaptionParentFrame(aParentFrame);
|
|
}
|
|
}
|
|
|
|
// Pull all the captions present in aItems out into aCaptions
|
|
static void
|
|
PullOutCaptionFrames(nsFrameItems& aItems, nsFrameItems& aCaptions)
|
|
{
|
|
nsIFrame *child = aItems.FirstChild();
|
|
while (child) {
|
|
nsIFrame *nextSibling = child->GetNextSibling();
|
|
if (nsGkAtoms::tableCaptionFrame == child->GetType()) {
|
|
aItems.RemoveFrame(child);
|
|
aCaptions.AddChild(child);
|
|
}
|
|
child = nextSibling;
|
|
}
|
|
}
|
|
|
|
|
|
// Construct the outer, inner table frames and the children frames for the table.
|
|
// XXX Page break frames for pseudo table frames are not constructed to avoid the risk
|
|
// associated with revising the pseudo frame mechanism. The long term solution
|
|
// of having frames handle page-break-before/after will solve the problem.
|
|
nsresult
|
|
nsCSSFrameConstructor::ConstructTable(nsFrameConstructorState& aState,
|
|
FrameConstructionItem& aItem,
|
|
nsIFrame* aParentFrame,
|
|
const nsStyleDisplay* aDisplay,
|
|
nsFrameItems& aFrameItems,
|
|
nsIFrame** aNewFrame)
|
|
{
|
|
NS_PRECONDITION(aDisplay->mDisplay == NS_STYLE_DISPLAY_TABLE ||
|
|
aDisplay->mDisplay == NS_STYLE_DISPLAY_INLINE_TABLE,
|
|
"Unexpected call");
|
|
|
|
nsIContent* const content = aItem.mContent;
|
|
nsStyleContext* const styleContext = aItem.mStyleContext;
|
|
const PRUint32 nameSpaceID = aItem.mNameSpaceID;
|
|
|
|
nsresult rv = NS_OK;
|
|
|
|
// create the pseudo SC for the outer table as a child of the inner SC
|
|
nsRefPtr<nsStyleContext> outerStyleContext;
|
|
outerStyleContext = mPresShell->StyleSet()->
|
|
ResolveAnonymousBoxStyle(nsCSSAnonBoxes::tableOuter, styleContext);
|
|
|
|
// Create the outer table frame which holds the caption and inner table frame
|
|
nsIFrame* newFrame;
|
|
if (kNameSpaceID_MathML == nameSpaceID)
|
|
newFrame = NS_NewMathMLmtableOuterFrame(mPresShell, outerStyleContext);
|
|
else
|
|
newFrame = NS_NewTableOuterFrame(mPresShell, outerStyleContext);
|
|
|
|
nsIFrame* geometricParent =
|
|
aState.GetGeometricParent(outerStyleContext->GetStyleDisplay(),
|
|
aParentFrame);
|
|
|
|
// Init the table outer frame
|
|
InitAndRestoreFrame(aState, content, geometricParent, nsnull, newFrame);
|
|
|
|
// Create the inner table frame
|
|
nsIFrame* innerFrame;
|
|
if (kNameSpaceID_MathML == nameSpaceID)
|
|
innerFrame = NS_NewMathMLmtableFrame(mPresShell, styleContext);
|
|
else
|
|
innerFrame = NS_NewTableFrame(mPresShell, styleContext);
|
|
|
|
InitAndRestoreFrame(aState, content, newFrame, nsnull, innerFrame);
|
|
|
|
// Put the newly created frames into the right child list
|
|
SetInitialSingleChild(newFrame, innerFrame);
|
|
|
|
rv = aState.AddChild(newFrame, aFrameItems, content, styleContext,
|
|
aParentFrame);
|
|
if (NS_FAILED(rv)) {
|
|
return rv;
|
|
}
|
|
|
|
if (!mRootElementFrame) {
|
|
// The frame we're constructing will be the root element frame.
|
|
// Set mRootElementFrame before processing children.
|
|
mRootElementFrame = newFrame;
|
|
}
|
|
|
|
nsFrameItems childItems;
|
|
if (aItem.mFCData->mBits & FCDATA_USE_CHILD_ITEMS) {
|
|
rv = ConstructFramesFromItemList(aState, aItem.mChildItems,
|
|
innerFrame, childItems);
|
|
} else {
|
|
rv = ProcessChildren(aState, content, styleContext, innerFrame,
|
|
PR_TRUE, childItems, PR_FALSE, aItem.mPendingBinding);
|
|
}
|
|
// XXXbz what about cleaning up?
|
|
if (NS_FAILED(rv)) return rv;
|
|
|
|
nsFrameItems captionItems;
|
|
PullOutCaptionFrames(childItems, captionItems);
|
|
|
|
// Set the inner table frame's initial primary list
|
|
innerFrame->SetInitialChildList(nsnull, childItems);
|
|
|
|
// Set the outer table frame's secondary childlist lists
|
|
if (captionItems.NotEmpty()) {
|
|
newFrame->SetInitialChildList(nsGkAtoms::captionList, captionItems);
|
|
}
|
|
|
|
*aNewFrame = newFrame;
|
|
return rv;
|
|
}
|
|
|
|
nsresult
|
|
nsCSSFrameConstructor::ConstructTableRow(nsFrameConstructorState& aState,
|
|
FrameConstructionItem& aItem,
|
|
nsIFrame* aParentFrame,
|
|
const nsStyleDisplay* aDisplay,
|
|
nsFrameItems& aFrameItems,
|
|
nsIFrame** aNewFrame)
|
|
{
|
|
NS_PRECONDITION(aDisplay->mDisplay == NS_STYLE_DISPLAY_TABLE_ROW,
|
|
"Unexpected call");
|
|
nsIContent* const content = aItem.mContent;
|
|
nsStyleContext* const styleContext = aItem.mStyleContext;
|
|
const PRUint32 nameSpaceID = aItem.mNameSpaceID;
|
|
|
|
nsIFrame* newFrame;
|
|
if (kNameSpaceID_MathML == nameSpaceID)
|
|
newFrame = NS_NewMathMLmtrFrame(mPresShell, styleContext);
|
|
else
|
|
newFrame = NS_NewTableRowFrame(mPresShell, styleContext);
|
|
|
|
if (NS_UNLIKELY(!newFrame)) {
|
|
return NS_ERROR_OUT_OF_MEMORY;
|
|
}
|
|
InitAndRestoreFrame(aState, content, aParentFrame, nsnull, newFrame);
|
|
|
|
nsFrameItems childItems;
|
|
nsresult rv;
|
|
if (aItem.mFCData->mBits & FCDATA_USE_CHILD_ITEMS) {
|
|
rv = ConstructFramesFromItemList(aState, aItem.mChildItems, newFrame,
|
|
childItems);
|
|
} else {
|
|
rv = ProcessChildren(aState, content, styleContext, newFrame,
|
|
PR_TRUE, childItems, PR_FALSE, aItem.mPendingBinding);
|
|
}
|
|
if (NS_FAILED(rv)) return rv;
|
|
|
|
newFrame->SetInitialChildList(nsnull, childItems);
|
|
aFrameItems.AddChild(newFrame);
|
|
*aNewFrame = newFrame;
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
nsresult
|
|
nsCSSFrameConstructor::ConstructTableCol(nsFrameConstructorState& aState,
|
|
FrameConstructionItem& aItem,
|
|
nsIFrame* aParentFrame,
|
|
const nsStyleDisplay* aStyleDisplay,
|
|
nsFrameItems& aFrameItems,
|
|
nsIFrame** aNewFrame)
|
|
{
|
|
nsIContent* const content = aItem.mContent;
|
|
nsStyleContext* const styleContext = aItem.mStyleContext;
|
|
|
|
nsTableColFrame* colFrame = NS_NewTableColFrame(mPresShell, styleContext);
|
|
if (NS_UNLIKELY(!colFrame)) {
|
|
return NS_ERROR_OUT_OF_MEMORY;
|
|
}
|
|
InitAndRestoreFrame(aState, content, aParentFrame, nsnull, colFrame);
|
|
|
|
NS_ASSERTION(colFrame->GetStyleContext() == styleContext,
|
|
"Unexpected style context");
|
|
|
|
aFrameItems.AddChild(colFrame);
|
|
*aNewFrame = colFrame;
|
|
|
|
// construct additional col frames if the col frame has a span > 1
|
|
PRInt32 span = colFrame->GetSpan();
|
|
for (PRInt32 spanX = 1; spanX < span; spanX++) {
|
|
nsTableColFrame* newCol = NS_NewTableColFrame(mPresShell, styleContext);
|
|
if (NS_UNLIKELY(!newCol)) {
|
|
return NS_ERROR_OUT_OF_MEMORY;
|
|
}
|
|
InitAndRestoreFrame(aState, content, aParentFrame, nsnull, newCol,
|
|
PR_FALSE);
|
|
aFrameItems.LastChild()->SetNextContinuation(newCol);
|
|
newCol->SetPrevContinuation(aFrameItems.LastChild());
|
|
aFrameItems.AddChild(newCol);
|
|
newCol->SetColType(eColAnonymousCol);
|
|
}
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
nsresult
|
|
nsCSSFrameConstructor::ConstructTableCell(nsFrameConstructorState& aState,
|
|
FrameConstructionItem& aItem,
|
|
nsIFrame* aParentFrame,
|
|
const nsStyleDisplay* aDisplay,
|
|
nsFrameItems& aFrameItems,
|
|
nsIFrame** aNewFrame)
|
|
{
|
|
NS_PRECONDITION(aDisplay->mDisplay == NS_STYLE_DISPLAY_TABLE_CELL,
|
|
"Unexpected call");
|
|
|
|
nsIContent* const content = aItem.mContent;
|
|
nsStyleContext* const styleContext = aItem.mStyleContext;
|
|
const PRUint32 nameSpaceID = aItem.mNameSpaceID;
|
|
|
|
PRBool borderCollapse = IsBorderCollapse(aParentFrame);
|
|
nsIFrame* newFrame;
|
|
// <mtable> is border separate in mathml.css and the MathML code doesn't implement
|
|
// border collapse. For those users who style <mtable> with border collapse,
|
|
// give them the default non-MathML table frames that understand border collapse.
|
|
// This won't break us because MathML table frames are all subclasses of the default
|
|
// table code, and so we can freely mix <mtable> with <mtr> or <tr>, <mtd> or <td>.
|
|
// What will happen is just that non-MathML frames won't understand MathML attributes
|
|
// and will therefore miss the special handling that the MathML code does.
|
|
if (kNameSpaceID_MathML == nameSpaceID && !borderCollapse)
|
|
newFrame = NS_NewMathMLmtdFrame(mPresShell, styleContext);
|
|
else
|
|
// Warning: If you change this and add a wrapper frame around table cell
|
|
// frames, make sure Bug 368554 doesn't regress!
|
|
// See IsInAutoWidthTableCellForQuirk() in nsImageFrame.cpp.
|
|
newFrame = NS_NewTableCellFrame(mPresShell, styleContext, borderCollapse);
|
|
|
|
if (NS_UNLIKELY(!newFrame)) {
|
|
return NS_ERROR_OUT_OF_MEMORY;
|
|
}
|
|
|
|
// Initialize the table cell frame
|
|
InitAndRestoreFrame(aState, content, aParentFrame, nsnull, newFrame);
|
|
|
|
// Resolve pseudo style and initialize the body cell frame
|
|
nsRefPtr<nsStyleContext> innerPseudoStyle;
|
|
innerPseudoStyle = mPresShell->StyleSet()->
|
|
ResolveAnonymousBoxStyle(nsCSSAnonBoxes::cellContent, styleContext);
|
|
|
|
// Create a block frame that will format the cell's content
|
|
PRBool isBlock;
|
|
nsIFrame* cellInnerFrame;
|
|
if (kNameSpaceID_MathML == nameSpaceID) {
|
|
cellInnerFrame = NS_NewMathMLmtdInnerFrame(mPresShell, innerPseudoStyle);
|
|
isBlock = PR_FALSE;
|
|
} else {
|
|
cellInnerFrame = NS_NewBlockFormattingContext(mPresShell, innerPseudoStyle);
|
|
isBlock = PR_TRUE;
|
|
}
|
|
|
|
if (NS_UNLIKELY(!cellInnerFrame)) {
|
|
newFrame->Destroy();
|
|
return NS_ERROR_OUT_OF_MEMORY;
|
|
}
|
|
|
|
InitAndRestoreFrame(aState, content, newFrame, nsnull, cellInnerFrame);
|
|
|
|
nsFrameItems childItems;
|
|
nsresult rv;
|
|
if (aItem.mFCData->mBits & FCDATA_USE_CHILD_ITEMS) {
|
|
// Need to push ourselves as a float containing block.
|
|
// XXXbz it might be nice to work on getting the parent
|
|
// FrameConstructionItem down into ProcessChildren and just making use of
|
|
// the push there, but that's a bit of work.
|
|
nsFrameConstructorSaveState floatSaveState;
|
|
if (!isBlock) { /* MathML case */
|
|
aState.PushFloatContainingBlock(nsnull, floatSaveState);
|
|
} else {
|
|
aState.PushFloatContainingBlock(cellInnerFrame, floatSaveState);
|
|
}
|
|
|
|
rv = ConstructFramesFromItemList(aState, aItem.mChildItems, cellInnerFrame,
|
|
childItems);
|
|
} else {
|
|
// Process the child content
|
|
rv = ProcessChildren(aState, content, styleContext, cellInnerFrame,
|
|
PR_TRUE, childItems, isBlock, aItem.mPendingBinding);
|
|
}
|
|
|
|
if (NS_FAILED(rv)) {
|
|
// Clean up
|
|
// XXXbz kids of this stuff need to be cleaned up too!
|
|
cellInnerFrame->Destroy();
|
|
newFrame->Destroy();
|
|
return rv;
|
|
}
|
|
|
|
cellInnerFrame->SetInitialChildList(nsnull, childItems);
|
|
SetInitialSingleChild(newFrame, cellInnerFrame);
|
|
aFrameItems.AddChild(newFrame);
|
|
*aNewFrame = newFrame;
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
static inline PRBool
|
|
NeedFrameFor(const nsFrameConstructorState& aState,
|
|
nsIFrame* aParentFrame,
|
|
nsIContent* aChildContent)
|
|
{
|
|
// XXX the GetContent() != aChildContent check is needed due to bug 135040.
|
|
// Remove it once that's fixed.
|
|
NS_PRECONDITION(!aChildContent->GetPrimaryFrame() ||
|
|
aState.mCreatingExtraFrames ||
|
|
aChildContent->GetPrimaryFrame()->GetContent() != aChildContent,
|
|
"Why did we get called?");
|
|
|
|
// don't create a whitespace frame if aParentFrame doesn't want it.
|
|
// always create frames for children in generated content. counter(),
|
|
// quotes, and attr() content can easily change dynamically and we don't
|
|
// want to be reconstructing frames. It's not even clear that these
|
|
// should be considered ignorable just because they evaluate to
|
|
// whitespace.
|
|
|
|
// We could handle all this in CreateNeededTablePseudos or some other place
|
|
// after we build our frame construction items, but that would involve
|
|
// creating frame construction items for whitespace kids of
|
|
// eExcludesIgnorableWhitespace frames, where we know we'll be dropping them
|
|
// all anyway, and involve an extra walk down the frame construction item
|
|
// list.
|
|
if (!aParentFrame->IsFrameOfType(nsIFrame::eExcludesIgnorableWhitespace) ||
|
|
aParentFrame->IsGeneratedContentFrame() ||
|
|
!aChildContent->IsNodeOfType(nsINode::eTEXT)) {
|
|
return PR_TRUE;
|
|
}
|
|
|
|
aChildContent->SetFlags(NS_CREATE_FRAME_IF_NON_WHITESPACE |
|
|
NS_REFRAME_IF_WHITESPACE);
|
|
return !aChildContent->TextIsOnlyWhitespace();
|
|
}
|
|
|
|
/***********************************************
|
|
* END TABLE SECTION
|
|
***********************************************/
|
|
|
|
static PRBool CheckOverflow(nsPresContext* aPresContext,
|
|
const nsStyleDisplay* aDisplay)
|
|
{
|
|
if (aDisplay->mOverflowX == NS_STYLE_OVERFLOW_VISIBLE)
|
|
return PR_FALSE;
|
|
|
|
if (aDisplay->mOverflowX == NS_STYLE_OVERFLOW_CLIP)
|
|
aPresContext->SetViewportOverflowOverride(NS_STYLE_OVERFLOW_HIDDEN,
|
|
NS_STYLE_OVERFLOW_HIDDEN);
|
|
else
|
|
aPresContext->SetViewportOverflowOverride(aDisplay->mOverflowX,
|
|
aDisplay->mOverflowY);
|
|
return PR_TRUE;
|
|
}
|
|
|
|
/**
|
|
* This checks the root element and the HTML BODY, if any, for an "overflow" property
|
|
* that should be applied to the viewport. If one is found then we return the
|
|
* element that we took the overflow from (which should then be treated as
|
|
* "overflow:visible"), and we store the overflow style in the prescontext.
|
|
* @return if scroll was propagated from some content node, the content node it
|
|
* was propagated from.
|
|
*/
|
|
nsIContent*
|
|
nsCSSFrameConstructor::PropagateScrollToViewport()
|
|
{
|
|
// Set default
|
|
nsPresContext* presContext = mPresShell->GetPresContext();
|
|
presContext->SetViewportOverflowOverride(NS_STYLE_OVERFLOW_AUTO,
|
|
NS_STYLE_OVERFLOW_AUTO);
|
|
|
|
// We never mess with the viewport scroll state
|
|
// when printing or in print preview
|
|
if (presContext->IsPaginated()) {
|
|
return nsnull;
|
|
}
|
|
|
|
Element* docElement = mDocument->GetRootElement();
|
|
|
|
// Check the style on the document root element
|
|
nsStyleSet *styleSet = mPresShell->StyleSet();
|
|
nsRefPtr<nsStyleContext> rootStyle;
|
|
rootStyle = styleSet->ResolveStyleFor(docElement, nsnull);
|
|
if (!rootStyle) {
|
|
return nsnull;
|
|
}
|
|
if (CheckOverflow(presContext, rootStyle->GetStyleDisplay())) {
|
|
// tell caller we stole the overflow style from the root element
|
|
return docElement;
|
|
}
|
|
|
|
// Don't look in the BODY for non-HTML documents or HTML documents
|
|
// with non-HTML roots
|
|
// XXX this should be earlier; we shouldn't even look at the document root
|
|
// for non-HTML documents. Fix this once we support explicit CSS styling
|
|
// of the viewport
|
|
// XXX what about XHTML?
|
|
nsCOMPtr<nsIDOMHTMLDocument> htmlDoc(do_QueryInterface(mDocument));
|
|
if (!htmlDoc || !docElement->IsHTML()) {
|
|
return nsnull;
|
|
}
|
|
|
|
nsCOMPtr<nsIDOMHTMLElement> body;
|
|
htmlDoc->GetBody(getter_AddRefs(body));
|
|
nsCOMPtr<nsIContent> bodyElement = do_QueryInterface(body);
|
|
|
|
if (!bodyElement ||
|
|
!bodyElement->NodeInfo()->Equals(nsGkAtoms::body)) {
|
|
// The body is not a <body> tag, it's a <frameset>.
|
|
return nsnull;
|
|
}
|
|
|
|
nsRefPtr<nsStyleContext> bodyStyle;
|
|
bodyStyle = styleSet->ResolveStyleFor(bodyElement->AsElement(), rootStyle);
|
|
if (!bodyStyle) {
|
|
return nsnull;
|
|
}
|
|
|
|
if (CheckOverflow(presContext, bodyStyle->GetStyleDisplay())) {
|
|
// tell caller we stole the overflow style from the body element
|
|
return bodyElement;
|
|
}
|
|
|
|
return nsnull;
|
|
}
|
|
|
|
nsresult
|
|
nsCSSFrameConstructor::ConstructDocElementFrame(Element* aDocElement,
|
|
nsILayoutHistoryState* aFrameState,
|
|
nsIFrame** aNewFrame)
|
|
{
|
|
NS_PRECONDITION(mFixedContainingBlock,
|
|
"No viewport? Someone forgot to call ConstructRootFrame!");
|
|
NS_PRECONDITION(mFixedContainingBlock == mPresShell->FrameManager()->GetRootFrame(),
|
|
"Unexpected mFixedContainingBlock");
|
|
NS_PRECONDITION(!mDocElementContainingBlock,
|
|
"Shouldn't have a doc element containing block here");
|
|
|
|
*aNewFrame = nsnull;
|
|
|
|
// Make sure to call PropagateScrollToViewport before
|
|
// SetUpDocElementContainingBlock, since it sets up our scrollbar state
|
|
// properly.
|
|
#ifdef DEBUG
|
|
nsIContent* propagatedScrollFrom =
|
|
#endif
|
|
PropagateScrollToViewport();
|
|
|
|
SetUpDocElementContainingBlock(aDocElement);
|
|
|
|
NS_ASSERTION(mDocElementContainingBlock, "Should have parent by now");
|
|
|
|
nsFrameConstructorState state(mPresShell, mFixedContainingBlock, nsnull,
|
|
nsnull, aFrameState);
|
|
|
|
// XXXbz why, exactly?
|
|
if (!mTempFrameTreeState)
|
|
state.mPresShell->CaptureHistoryState(getter_AddRefs(mTempFrameTreeState));
|
|
|
|
// Make sure that we'll handle restyles for this document element in
|
|
// the future. We need this, because the document element might
|
|
// have stale restyle bits from a previous frame constructor for
|
|
// this document. Unlike in AddFrameConstructionItems, it's safe to
|
|
// unset all element restyle flags, since we don't have any
|
|
// siblings.
|
|
aDocElement->UnsetFlags(ELEMENT_ALL_RESTYLE_FLAGS);
|
|
|
|
// --------- CREATE AREA OR BOX FRAME -------
|
|
nsRefPtr<nsStyleContext> styleContext;
|
|
styleContext = mPresShell->StyleSet()->ResolveStyleFor(aDocElement,
|
|
nsnull);
|
|
|
|
const nsStyleDisplay* display = styleContext->GetStyleDisplay();
|
|
|
|
// Ensure that our XBL bindings are installed.
|
|
if (display->mBinding) {
|
|
// Get the XBL loader.
|
|
nsresult rv;
|
|
PRBool resolveStyle;
|
|
|
|
nsIXBLService * xblService = GetXBLService();
|
|
if (!xblService)
|
|
return NS_ERROR_FAILURE;
|
|
|
|
nsRefPtr<nsXBLBinding> binding;
|
|
rv = xblService->LoadBindings(aDocElement, display->mBinding->GetURI(),
|
|
display->mBinding->mOriginPrincipal,
|
|
PR_FALSE, getter_AddRefs(binding),
|
|
&resolveStyle);
|
|
if (NS_FAILED(rv) && rv != NS_ERROR_XBL_BLOCKED)
|
|
return NS_OK; // Binding will load asynchronously.
|
|
|
|
if (binding) {
|
|
// For backwards compat, keep firing the root's constructor
|
|
// after all of its kids' constructors. So tell the binding
|
|
// manager about it right now.
|
|
mDocument->BindingManager()->AddToAttachedQueue(binding);
|
|
}
|
|
|
|
if (resolveStyle) {
|
|
styleContext = mPresShell->StyleSet()->ResolveStyleFor(aDocElement,
|
|
nsnull);
|
|
display = styleContext->GetStyleDisplay();
|
|
}
|
|
}
|
|
|
|
// --------- IF SCROLLABLE WRAP IN SCROLLFRAME --------
|
|
|
|
#ifdef DEBUG
|
|
NS_ASSERTION(!display->IsScrollableOverflow() ||
|
|
state.mPresContext->IsPaginated() ||
|
|
propagatedScrollFrom == aDocElement,
|
|
"Scrollbars should have been propagated to the viewport");
|
|
#endif
|
|
|
|
if (NS_UNLIKELY(display->mDisplay == NS_STYLE_DISPLAY_NONE)) {
|
|
state.mFrameManager->SetUndisplayedContent(aDocElement, styleContext);
|
|
return NS_OK;
|
|
}
|
|
|
|
// Make sure to start any background image loads for the root element now.
|
|
styleContext->StartBackgroundImageLoads();
|
|
|
|
nsFrameConstructorSaveState absoluteSaveState;
|
|
if (mHasRootAbsPosContainingBlock) {
|
|
// Push the absolute containing block now so we can absolutely position
|
|
// the root element
|
|
state.PushAbsoluteContainingBlock(mDocElementContainingBlock,
|
|
absoluteSaveState);
|
|
}
|
|
|
|
nsresult rv;
|
|
|
|
// The rules from CSS 2.1, section 9.2.4, have already been applied
|
|
// by the style system, so we can assume that display->mDisplay is
|
|
// either NONE, BLOCK, or TABLE.
|
|
|
|
// contentFrame is the primary frame for the root element. *aNewFrame
|
|
// is the frame that will be the child of the initial containing block.
|
|
// These are usually the same frame but they can be different, in
|
|
// particular if the root frame is positioned, in which case
|
|
// contentFrame is the out-of-flow frame and *aNewFrame is the
|
|
// placeholder.
|
|
nsIFrame* contentFrame;
|
|
PRBool processChildren = PR_FALSE;
|
|
|
|
// Check whether we need to build a XUL box or SVG root frame
|
|
#ifdef MOZ_XUL
|
|
if (aDocElement->IsXUL()) {
|
|
contentFrame = NS_NewDocElementBoxFrame(mPresShell, styleContext);
|
|
if (NS_UNLIKELY(!contentFrame)) {
|
|
return NS_ERROR_OUT_OF_MEMORY;
|
|
}
|
|
InitAndRestoreFrame(state, aDocElement, mDocElementContainingBlock, nsnull,
|
|
contentFrame);
|
|
*aNewFrame = contentFrame;
|
|
processChildren = PR_TRUE;
|
|
}
|
|
else
|
|
#endif
|
|
if (aDocElement->GetNameSpaceID() == kNameSpaceID_SVG) {
|
|
if (aDocElement->Tag() == nsGkAtoms::svg) {
|
|
contentFrame = NS_NewSVGOuterSVGFrame(mPresShell, styleContext);
|
|
if (NS_UNLIKELY(!contentFrame)) {
|
|
return NS_ERROR_OUT_OF_MEMORY;
|
|
}
|
|
InitAndRestoreFrame(state, aDocElement,
|
|
state.GetGeometricParent(display,
|
|
mDocElementContainingBlock),
|
|
nsnull, contentFrame);
|
|
|
|
// AddChild takes care of transforming the frame tree for fixed-pos
|
|
// or abs-pos situations
|
|
nsFrameItems frameItems;
|
|
rv = state.AddChild(contentFrame, frameItems, aDocElement,
|
|
styleContext, mDocElementContainingBlock);
|
|
if (NS_FAILED(rv) || frameItems.IsEmpty()) {
|
|
return rv;
|
|
}
|
|
*aNewFrame = frameItems.FirstChild();
|
|
processChildren = PR_TRUE;
|
|
} else {
|
|
return NS_ERROR_FAILURE;
|
|
}
|
|
} else {
|
|
PRBool docElemIsTable = (display->mDisplay == NS_STYLE_DISPLAY_TABLE);
|
|
if (docElemIsTable) {
|
|
// We're going to call the right function ourselves, so no need to give a
|
|
// function to this FrameConstructionData.
|
|
|
|
// XXXbz on the other hand, if we converted this whole function to
|
|
// FrameConstructionData/Item, then we'd need the right function
|
|
// here... but would probably be able to get away with less code in this
|
|
// function in general.
|
|
// Use a null PendingBinding, since our binding is not in fact pending.
|
|
static const FrameConstructionData rootTableData = FCDATA_DECL(0, nsnull);
|
|
nsRefPtr<nsStyleContext> extraRef(styleContext);
|
|
FrameConstructionItem item(&rootTableData, aDocElement,
|
|
aDocElement->Tag(), kNameSpaceID_None,
|
|
nsnull, extraRef.forget(), PR_TRUE);
|
|
|
|
nsFrameItems frameItems;
|
|
// if the document is a table then just populate it.
|
|
rv = ConstructTable(state, item, mDocElementContainingBlock,
|
|
styleContext->GetStyleDisplay(),
|
|
frameItems, &contentFrame);
|
|
if (NS_FAILED(rv))
|
|
return rv;
|
|
if (!contentFrame || frameItems.IsEmpty())
|
|
return NS_ERROR_FAILURE;
|
|
*aNewFrame = frameItems.FirstChild();
|
|
NS_ASSERTION(frameItems.OnlyChild(), "multiple root element frames");
|
|
} else {
|
|
contentFrame = NS_NewBlockFormattingContext(mPresShell, styleContext);
|
|
if (!contentFrame)
|
|
return NS_ERROR_OUT_OF_MEMORY;
|
|
nsFrameItems frameItems;
|
|
// Use a null PendingBinding, since our binding is not in fact pending.
|
|
rv = ConstructBlock(state, display, aDocElement,
|
|
state.GetGeometricParent(display,
|
|
mDocElementContainingBlock),
|
|
mDocElementContainingBlock, styleContext,
|
|
&contentFrame, frameItems, display->IsPositioned(),
|
|
nsnull);
|
|
if (NS_FAILED(rv) || frameItems.IsEmpty())
|
|
return rv;
|
|
*aNewFrame = frameItems.FirstChild();
|
|
NS_ASSERTION(frameItems.OnlyChild(), "multiple root element frames");
|
|
}
|
|
}
|
|
|
|
// set the primary frame
|
|
aDocElement->SetPrimaryFrame(contentFrame);
|
|
|
|
NS_ASSERTION(processChildren ? !mRootElementFrame :
|
|
mRootElementFrame == contentFrame,
|
|
"unexpected mRootElementFrame");
|
|
mRootElementFrame = contentFrame;
|
|
|
|
// Figure out which frame has the main style for the document element,
|
|
// assigning it to mRootElementStyleFrame.
|
|
// Backgrounds should be propagated from that frame to the viewport.
|
|
PRBool isChild;
|
|
contentFrame->GetParentStyleContextFrame(state.mPresContext,
|
|
&mRootElementStyleFrame, &isChild);
|
|
if (!isChild) {
|
|
mRootElementStyleFrame = mRootElementFrame;
|
|
}
|
|
|
|
if (processChildren) {
|
|
// Still need to process the child content
|
|
nsFrameItems childItems;
|
|
|
|
NS_ASSERTION(!nsLayoutUtils::GetAsBlock(contentFrame),
|
|
"Only XUL and SVG frames should reach here");
|
|
// Use a null PendingBinding, since our binding is not in fact pending.
|
|
ProcessChildren(state, aDocElement, styleContext, contentFrame, PR_TRUE,
|
|
childItems, PR_FALSE, nsnull);
|
|
|
|
// Set the initial child lists
|
|
contentFrame->SetInitialChildList(nsnull, childItems);
|
|
}
|
|
|
|
SetInitialSingleChild(mDocElementContainingBlock, *aNewFrame);
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
|
|
nsresult
|
|
nsCSSFrameConstructor::ConstructRootFrame(nsIFrame** aNewFrame)
|
|
{
|
|
AUTO_LAYOUT_PHASE_ENTRY_POINT(mPresShell->GetPresContext(), FrameC);
|
|
NS_PRECONDITION(aNewFrame, "null out param");
|
|
|
|
nsStyleSet *styleSet = mPresShell->StyleSet();
|
|
|
|
// Set up our style rule observer.
|
|
// XXXbz wouldn't this make more sense as part of presshell init?
|
|
{
|
|
styleSet->SetBindingManager(mDocument->BindingManager());
|
|
}
|
|
|
|
// --------- BUILD VIEWPORT -----------
|
|
nsIFrame* viewportFrame = nsnull;
|
|
nsRefPtr<nsStyleContext> viewportPseudoStyle;
|
|
|
|
viewportPseudoStyle =
|
|
styleSet->ResolveAnonymousBoxStyle(nsCSSAnonBoxes::viewport, nsnull);
|
|
|
|
viewportFrame = NS_NewViewportFrame(mPresShell, viewportPseudoStyle);
|
|
|
|
// XXXbz do we _have_ to pass a null content pointer to that frame?
|
|
// Would it really kill us to pass in the root element or something?
|
|
// What would that break?
|
|
viewportFrame->Init(nsnull, nsnull, nsnull);
|
|
|
|
// Bind the viewport frame to the root view
|
|
nsIView* rootView = mPresShell->GetViewManager()->GetRootView();
|
|
viewportFrame->SetView(rootView);
|
|
|
|
nsContainerFrame::SyncFrameViewProperties(mPresShell->GetPresContext(), viewportFrame,
|
|
viewportPseudoStyle, rootView);
|
|
nsContainerFrame::SyncWindowProperties(mPresShell->GetPresContext(), viewportFrame,
|
|
rootView);
|
|
|
|
// The viewport is the containing block for 'fixed' elements
|
|
mFixedContainingBlock = viewportFrame;
|
|
|
|
*aNewFrame = viewportFrame;
|
|
return NS_OK;
|
|
}
|
|
|
|
nsresult
|
|
nsCSSFrameConstructor::SetUpDocElementContainingBlock(nsIContent* aDocElement)
|
|
{
|
|
NS_PRECONDITION(aDocElement, "No element?");
|
|
NS_PRECONDITION(!aDocElement->GetParent(), "Not root content?");
|
|
NS_PRECONDITION(aDocElement->GetCurrentDoc(), "Not in a document?");
|
|
NS_PRECONDITION(aDocElement->GetCurrentDoc()->GetRootElement() ==
|
|
aDocElement, "Not the root of the document?");
|
|
|
|
/*
|
|
how the root frame hierarchy should look
|
|
|
|
Galley presentation, non-XUL, with scrolling (i.e. not a frameset):
|
|
|
|
ViewportFrame [fixed-cb]
|
|
nsHTMLScrollFrame
|
|
nsCanvasFrame [abs-cb]
|
|
root element frame (nsBlockFrame, nsSVGOuterSVGFrame,
|
|
nsTableOuterFrame, nsPlaceholderFrame)
|
|
|
|
Galley presentation, non-XUL, without scrolling (i.e. a frameset):
|
|
|
|
ViewportFrame [fixed-cb]
|
|
nsCanvasFrame [abs-cb]
|
|
root element frame (nsBlockFrame)
|
|
|
|
Galley presentation, XUL
|
|
|
|
ViewportFrame [fixed-cb]
|
|
nsRootBoxFrame
|
|
root element frame (nsDocElementBoxFrame)
|
|
|
|
Print presentation, non-XUL
|
|
|
|
ViewportFrame
|
|
nsSimplePageSequenceFrame
|
|
nsPageFrame [fixed-cb]
|
|
nsPageContentFrame
|
|
nsCanvasFrame [abs-cb]
|
|
root element frame (nsBlockFrame, nsSVGOuterSVGFrame,
|
|
nsTableOuterFrame, nsPlaceholderFrame)
|
|
|
|
Print-preview presentation, non-XUL
|
|
|
|
ViewportFrame
|
|
nsHTMLScrollFrame
|
|
nsSimplePageSequenceFrame
|
|
nsPageFrame [fixed-cb]
|
|
nsPageContentFrame
|
|
nsCanvasFrame [abs-cb]
|
|
root element frame (nsBlockFrame, nsSVGOuterSVGFrame,
|
|
nsTableOuterFrame, nsPlaceholderFrame)
|
|
|
|
Print/print preview of XUL is not supported.
|
|
[fixed-cb]: the default containing block for fixed-pos content
|
|
[abs-cb]: the default containing block for abs-pos content
|
|
|
|
Meaning of nsCSSFrameConstructor fields:
|
|
mRootElementFrame is "root element frame". This is the primary frame for
|
|
the root element.
|
|
mDocElementContainingBlock is the parent of mRootElementFrame
|
|
(i.e. nsCanvasFrame or nsRootBoxFrame)
|
|
mFixedContainingBlock is the [fixed-cb]
|
|
mGfxScrollFrame is the nsHTMLScrollFrame mentioned above, or null if there isn't one
|
|
mPageSequenceFrame is the nsSimplePageSequenceFrame, or null if there isn't one
|
|
*/
|
|
|
|
// --------- CREATE ROOT FRAME -------
|
|
|
|
|
|
// Create the root frame. The document element's frame is a child of the
|
|
// root frame.
|
|
//
|
|
// The root frame serves two purposes:
|
|
// - reserves space for any margins needed for the document element's frame
|
|
// - renders the document element's background. This ensures the background covers
|
|
// the entire canvas as specified by the CSS2 spec
|
|
|
|
nsPresContext* presContext = mPresShell->GetPresContext();
|
|
PRBool isPaginated = presContext->IsRootPaginatedDocument();
|
|
nsIFrame* viewportFrame = mFixedContainingBlock;
|
|
nsStyleContext* viewportPseudoStyle = viewportFrame->GetStyleContext();
|
|
|
|
nsIFrame* rootFrame = nsnull;
|
|
nsIAtom* rootPseudo;
|
|
|
|
if (!isPaginated) {
|
|
#ifdef MOZ_XUL
|
|
if (aDocElement->IsXUL())
|
|
{
|
|
// pass a temporary stylecontext, the correct one will be set later
|
|
rootFrame = NS_NewRootBoxFrame(mPresShell, viewportPseudoStyle);
|
|
} else
|
|
#endif
|
|
{
|
|
// pass a temporary stylecontext, the correct one will be set later
|
|
rootFrame = NS_NewCanvasFrame(mPresShell, viewportPseudoStyle);
|
|
mHasRootAbsPosContainingBlock = PR_TRUE;
|
|
}
|
|
|
|
rootPseudo = nsCSSAnonBoxes::canvas;
|
|
mDocElementContainingBlock = rootFrame;
|
|
} else {
|
|
// Create a page sequence frame
|
|
rootFrame = NS_NewSimplePageSequenceFrame(mPresShell, viewportPseudoStyle);
|
|
mPageSequenceFrame = rootFrame;
|
|
rootPseudo = nsCSSAnonBoxes::pageSequence;
|
|
}
|
|
|
|
|
|
// --------- IF SCROLLABLE WRAP IN SCROLLFRAME --------
|
|
|
|
// If the device supports scrolling (e.g., in galley mode on the screen and
|
|
// for print-preview, but not when printing), then create a scroll frame that
|
|
// will act as the scrolling mechanism for the viewport.
|
|
// XXX Do we even need a viewport when printing to a printer?
|
|
|
|
// As long as the docshell doesn't prohibit it, and the device supports
|
|
// it, create a scroll frame that will act as the scolling mechanism for
|
|
// the viewport.
|
|
//
|
|
// Threre are three possible values stored in the docshell:
|
|
// 1) nsIScrollable::Scrollbar_Never = no scrollbars
|
|
// 2) nsIScrollable::Scrollbar_Auto = scrollbars appear if needed
|
|
// 3) nsIScrollable::Scrollbar_Always = scrollbars always
|
|
// Only need to create a scroll frame/view for cases 2 and 3.
|
|
|
|
PRBool isHTML = aDocElement->IsHTML();
|
|
PRBool isXUL = PR_FALSE;
|
|
|
|
if (!isHTML) {
|
|
isXUL = aDocElement->IsXUL();
|
|
}
|
|
|
|
// Never create scrollbars for XUL documents
|
|
PRBool isScrollable = !isXUL;
|
|
|
|
// Never create scrollbars for frameset documents.
|
|
if (isHTML) {
|
|
nsCOMPtr<nsIHTMLDocument> htmlDoc = do_QueryInterface(mDocument);
|
|
if (htmlDoc && htmlDoc->GetIsFrameset())
|
|
isScrollable = PR_FALSE;
|
|
}
|
|
|
|
if (isPaginated) {
|
|
isScrollable = presContext->HasPaginatedScrolling();
|
|
}
|
|
|
|
// We no longer need to do overflow propagation here. It's taken care of
|
|
// when we construct frames for the element whose overflow might be
|
|
// propagated
|
|
NS_ASSERTION(!isScrollable || !isXUL,
|
|
"XUL documents should never be scrollable - see above");
|
|
|
|
nsIFrame* newFrame = rootFrame;
|
|
nsRefPtr<nsStyleContext> rootPseudoStyle;
|
|
// we must create a state because if the scrollbars are GFX it needs the
|
|
// state to build the scrollbar frames.
|
|
nsFrameConstructorState state(mPresShell, nsnull, nsnull, nsnull);
|
|
|
|
// Start off with the viewport as parent; we'll adjust it as needed.
|
|
nsIFrame* parentFrame = viewportFrame;
|
|
|
|
nsStyleSet* styleSet = mPresShell->StyleSet();
|
|
// If paginated, make sure we don't put scrollbars in
|
|
if (!isScrollable) {
|
|
rootPseudoStyle = styleSet->ResolveAnonymousBoxStyle(rootPseudo,
|
|
viewportPseudoStyle);
|
|
} else {
|
|
if (rootPseudo == nsCSSAnonBoxes::canvas) {
|
|
rootPseudo = nsCSSAnonBoxes::scrolledCanvas;
|
|
} else {
|
|
NS_ASSERTION(rootPseudo == nsCSSAnonBoxes::pageSequence,
|
|
"Unknown root pseudo");
|
|
rootPseudo = nsCSSAnonBoxes::scrolledPageSequence;
|
|
}
|
|
|
|
// Build the frame. We give it the content we are wrapping which is the
|
|
// document element, the root frame, the parent view port frame, and we
|
|
// should get back the new frame and the scrollable view if one was
|
|
// created.
|
|
|
|
// resolve a context for the scrollframe
|
|
nsRefPtr<nsStyleContext> styleContext;
|
|
styleContext = styleSet->ResolveAnonymousBoxStyle(nsCSSAnonBoxes::viewportScroll,
|
|
viewportPseudoStyle);
|
|
|
|
// Note that the viewport scrollframe is always built with
|
|
// overflow:auto style. This forces the scroll frame to create
|
|
// anonymous content for both scrollbars. This is necessary even
|
|
// if the HTML or BODY elements are overriding the viewport
|
|
// scroll style to 'hidden' --- dynamic style changes might put
|
|
// scrollbars back on the viewport and we don't want to have to
|
|
// reframe the viewport to create the scrollbar content.
|
|
newFrame = nsnull;
|
|
rootPseudoStyle = BeginBuildingScrollFrame( state,
|
|
aDocElement,
|
|
styleContext,
|
|
viewportFrame,
|
|
rootPseudo,
|
|
PR_TRUE,
|
|
newFrame);
|
|
parentFrame = newFrame;
|
|
mGfxScrollFrame = newFrame;
|
|
}
|
|
|
|
rootFrame->SetStyleContextWithoutNotification(rootPseudoStyle);
|
|
rootFrame->Init(aDocElement, parentFrame, nsnull);
|
|
|
|
if (isScrollable) {
|
|
FinishBuildingScrollFrame(parentFrame, rootFrame);
|
|
}
|
|
|
|
if (isPaginated) { // paginated
|
|
// Create the first page
|
|
// Set the initial child lists
|
|
nsIFrame *pageFrame, *canvasFrame;
|
|
ConstructPageFrame(mPresShell, presContext, rootFrame, nsnull,
|
|
pageFrame, canvasFrame);
|
|
SetInitialSingleChild(rootFrame, pageFrame);
|
|
|
|
// The eventual parent of the document element frame.
|
|
// XXX should this be set for every new page (in ConstructPageFrame)?
|
|
mDocElementContainingBlock = canvasFrame;
|
|
mHasRootAbsPosContainingBlock = PR_TRUE;
|
|
}
|
|
|
|
if (viewportFrame->GetStateBits() & NS_FRAME_FIRST_REFLOW) {
|
|
SetInitialSingleChild(viewportFrame, newFrame);
|
|
} else {
|
|
nsFrameList newFrameList(newFrame, newFrame);
|
|
viewportFrame->AppendFrames(nsnull, newFrameList);
|
|
}
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
nsresult
|
|
nsCSSFrameConstructor::ConstructPageFrame(nsIPresShell* aPresShell,
|
|
nsPresContext* aPresContext,
|
|
nsIFrame* aParentFrame,
|
|
nsIFrame* aPrevPageFrame,
|
|
nsIFrame*& aPageFrame,
|
|
nsIFrame*& aCanvasFrame)
|
|
{
|
|
nsStyleContext* parentStyleContext = aParentFrame->GetStyleContext();
|
|
nsStyleSet *styleSet = aPresShell->StyleSet();
|
|
|
|
nsRefPtr<nsStyleContext> pagePseudoStyle;
|
|
pagePseudoStyle = styleSet->ResolveAnonymousBoxStyle(nsCSSAnonBoxes::page,
|
|
parentStyleContext);
|
|
|
|
aPageFrame = NS_NewPageFrame(aPresShell, pagePseudoStyle);
|
|
if (NS_UNLIKELY(!aPageFrame))
|
|
return NS_ERROR_OUT_OF_MEMORY;
|
|
|
|
// Initialize the page frame and force it to have a view. This makes printing of
|
|
// the pages easier and faster.
|
|
aPageFrame->Init(nsnull, aParentFrame, aPrevPageFrame);
|
|
|
|
nsRefPtr<nsStyleContext> pageContentPseudoStyle;
|
|
pageContentPseudoStyle =
|
|
styleSet->ResolveAnonymousBoxStyle(nsCSSAnonBoxes::pageContent,
|
|
pagePseudoStyle);
|
|
|
|
nsIFrame* pageContentFrame = NS_NewPageContentFrame(aPresShell, pageContentPseudoStyle);
|
|
if (NS_UNLIKELY(!pageContentFrame))
|
|
return NS_ERROR_OUT_OF_MEMORY;
|
|
|
|
// Initialize the page content frame and force it to have a view. Also make it the
|
|
// containing block for fixed elements which are repeated on every page.
|
|
nsIFrame* prevPageContentFrame = nsnull;
|
|
if (aPrevPageFrame) {
|
|
prevPageContentFrame = aPrevPageFrame->GetFirstChild(nsnull);
|
|
NS_ASSERTION(prevPageContentFrame, "missing page content frame");
|
|
}
|
|
pageContentFrame->Init(nsnull, aPageFrame, prevPageContentFrame);
|
|
SetInitialSingleChild(aPageFrame, pageContentFrame);
|
|
mFixedContainingBlock = pageContentFrame;
|
|
|
|
nsRefPtr<nsStyleContext> canvasPseudoStyle;
|
|
canvasPseudoStyle = styleSet->ResolveAnonymousBoxStyle(nsCSSAnonBoxes::canvas,
|
|
pageContentPseudoStyle);
|
|
|
|
aCanvasFrame = NS_NewCanvasFrame(aPresShell, canvasPseudoStyle);
|
|
if (NS_UNLIKELY(!aCanvasFrame))
|
|
return NS_ERROR_OUT_OF_MEMORY;
|
|
|
|
nsIFrame* prevCanvasFrame = nsnull;
|
|
if (prevPageContentFrame) {
|
|
prevCanvasFrame = prevPageContentFrame->GetFirstChild(nsnull);
|
|
NS_ASSERTION(prevCanvasFrame, "missing canvas frame");
|
|
}
|
|
aCanvasFrame->Init(nsnull, pageContentFrame, prevCanvasFrame);
|
|
SetInitialSingleChild(pageContentFrame, aCanvasFrame);
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
/* static */
|
|
nsresult
|
|
nsCSSFrameConstructor::CreatePlaceholderFrameFor(nsIPresShell* aPresShell,
|
|
nsIContent* aContent,
|
|
nsIFrame* aFrame,
|
|
nsStyleContext* aStyleContext,
|
|
nsIFrame* aParentFrame,
|
|
nsIFrame* aPrevInFlow,
|
|
nsFrameState aTypeBit,
|
|
nsIFrame** aPlaceholderFrame)
|
|
{
|
|
nsRefPtr<nsStyleContext> placeholderStyle = aPresShell->StyleSet()->
|
|
ResolveStyleForNonElement(aStyleContext->GetParent());
|
|
|
|
// The placeholder frame gets a pseudo style context
|
|
nsPlaceholderFrame* placeholderFrame =
|
|
(nsPlaceholderFrame*)NS_NewPlaceholderFrame(aPresShell, placeholderStyle,
|
|
aTypeBit);
|
|
|
|
if (placeholderFrame) {
|
|
placeholderFrame->Init(aContent, aParentFrame, aPrevInFlow);
|
|
|
|
// The placeholder frame has a pointer back to the out-of-flow frame
|
|
placeholderFrame->SetOutOfFlowFrame(aFrame);
|
|
|
|
aFrame->AddStateBits(NS_FRAME_OUT_OF_FLOW);
|
|
|
|
// Add mapping from absolutely positioned frame to its placeholder frame
|
|
aPresShell->FrameManager()->RegisterPlaceholderFrame(placeholderFrame);
|
|
|
|
*aPlaceholderFrame = static_cast<nsIFrame*>(placeholderFrame);
|
|
|
|
return NS_OK;
|
|
}
|
|
else {
|
|
return NS_ERROR_OUT_OF_MEMORY;
|
|
}
|
|
}
|
|
|
|
// Clears any lazy bits set in the range [aStartContent, aEndContent). If
|
|
// aEndContent is null, that means to clear bits in all siblings starting with
|
|
// aStartContent. aStartContent must not be null unless aEndContent is also
|
|
// null. We do this so that when new children are inserted under elements whose
|
|
// frame is a leaf the new children don't cause us to try to construct frames
|
|
// for the existing children again.
|
|
static inline void
|
|
ClearLazyBits(nsIContent* aStartContent, nsIContent* aEndContent)
|
|
{
|
|
NS_PRECONDITION(aStartContent || !aEndContent,
|
|
"Must have start child if we have an end child");
|
|
for (nsIContent* cur = aStartContent; cur != aEndContent;
|
|
cur = cur->GetNextSibling()) {
|
|
cur->UnsetFlags(NODE_DESCENDANTS_NEED_FRAMES | NODE_NEEDS_FRAME);
|
|
}
|
|
}
|
|
|
|
nsresult
|
|
nsCSSFrameConstructor::ConstructButtonFrame(nsFrameConstructorState& aState,
|
|
FrameConstructionItem& aItem,
|
|
nsIFrame* aParentFrame,
|
|
const nsStyleDisplay* aStyleDisplay,
|
|
nsFrameItems& aFrameItems,
|
|
nsIFrame** aNewFrame)
|
|
{
|
|
*aNewFrame = nsnull;
|
|
nsIFrame* buttonFrame = nsnull;
|
|
nsIContent* const content = aItem.mContent;
|
|
nsStyleContext* const styleContext = aItem.mStyleContext;
|
|
|
|
if (nsGkAtoms::button == aItem.mTag) {
|
|
buttonFrame = NS_NewHTMLButtonControlFrame(mPresShell, styleContext);
|
|
}
|
|
else {
|
|
buttonFrame = NS_NewGfxButtonControlFrame(mPresShell, styleContext);
|
|
}
|
|
if (NS_UNLIKELY(!buttonFrame)) {
|
|
return NS_ERROR_OUT_OF_MEMORY;
|
|
}
|
|
// Initialize the button frame
|
|
nsresult rv = InitAndRestoreFrame(aState, content,
|
|
aState.GetGeometricParent(aStyleDisplay, aParentFrame),
|
|
nsnull, buttonFrame);
|
|
if (NS_FAILED(rv)) {
|
|
buttonFrame->Destroy();
|
|
return rv;
|
|
}
|
|
|
|
nsRefPtr<nsStyleContext> innerBlockContext;
|
|
innerBlockContext =
|
|
mPresShell->StyleSet()->ResolveAnonymousBoxStyle(nsCSSAnonBoxes::buttonContent,
|
|
styleContext);
|
|
|
|
nsIFrame* blockFrame = NS_NewBlockFrame(mPresShell, innerBlockContext,
|
|
NS_BLOCK_FLOAT_MGR);
|
|
|
|
if (NS_UNLIKELY(!blockFrame)) {
|
|
buttonFrame->Destroy();
|
|
return NS_ERROR_OUT_OF_MEMORY;
|
|
}
|
|
rv = InitAndRestoreFrame(aState, content, buttonFrame, nsnull, blockFrame);
|
|
if (NS_FAILED(rv)) {
|
|
blockFrame->Destroy();
|
|
buttonFrame->Destroy();
|
|
return rv;
|
|
}
|
|
|
|
rv = aState.AddChild(buttonFrame, aFrameItems, content, styleContext,
|
|
aParentFrame);
|
|
if (NS_FAILED(rv)) {
|
|
blockFrame->Destroy();
|
|
buttonFrame->Destroy();
|
|
return rv;
|
|
}
|
|
|
|
PRBool isLeaf = buttonFrame->IsLeaf();
|
|
#ifdef DEBUG
|
|
// Make sure that we're an anonymous content creator exactly when we're a
|
|
// leaf
|
|
nsIAnonymousContentCreator* creator = do_QueryFrame(buttonFrame);
|
|
NS_ASSERTION(!creator == !isLeaf,
|
|
"Should be creator exactly when we're a leaf");
|
|
#endif
|
|
|
|
if (!isLeaf) {
|
|
// Process children
|
|
nsFrameConstructorSaveState absoluteSaveState;
|
|
nsFrameItems childItems;
|
|
|
|
if (aStyleDisplay->IsPositioned()) {
|
|
// The area frame becomes a container for child frames that are
|
|
// absolutely positioned
|
|
aState.PushAbsoluteContainingBlock(blockFrame, absoluteSaveState);
|
|
}
|
|
|
|
#ifdef DEBUG
|
|
// Make sure that anonymous child creation will have no effect in this case
|
|
nsIAnonymousContentCreator* creator = do_QueryFrame(blockFrame);
|
|
NS_ASSERTION(!creator, "Shouldn't be an anonymous content creator!");
|
|
#endif
|
|
|
|
rv = ProcessChildren(aState, content, styleContext, blockFrame, PR_TRUE,
|
|
childItems, aStyleDisplay->IsBlockInside(),
|
|
aItem.mPendingBinding);
|
|
if (NS_FAILED(rv)) return rv;
|
|
|
|
// Set the areas frame's initial child lists
|
|
blockFrame->SetInitialChildList(nsnull, childItems);
|
|
}
|
|
|
|
SetInitialSingleChild(buttonFrame, blockFrame);
|
|
|
|
if (isLeaf) {
|
|
ClearLazyBits(content->GetFirstChild(), nsnull);
|
|
|
|
nsFrameItems anonymousChildItems;
|
|
// if there are any anonymous children create frames for them. Note that
|
|
// we're doing this using a different parent frame from the one we pass to
|
|
// ProcessChildren!
|
|
CreateAnonymousFrames(aState, content, buttonFrame, aItem.mPendingBinding,
|
|
anonymousChildItems);
|
|
if (anonymousChildItems.NotEmpty()) {
|
|
// the anonymous content is already parented to the area frame
|
|
aState.mFrameManager->AppendFrames(blockFrame, nsnull,
|
|
anonymousChildItems);
|
|
}
|
|
}
|
|
|
|
// our new button frame returned is the top frame.
|
|
*aNewFrame = buttonFrame;
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
nsresult
|
|
nsCSSFrameConstructor::ConstructSelectFrame(nsFrameConstructorState& aState,
|
|
FrameConstructionItem& aItem,
|
|
nsIFrame* aParentFrame,
|
|
const nsStyleDisplay* aStyleDisplay,
|
|
nsFrameItems& aFrameItems,
|
|
nsIFrame** aNewFrame)
|
|
{
|
|
nsresult rv = NS_OK;
|
|
const PRInt32 kNoSizeSpecified = -1;
|
|
|
|
nsIContent* const content = aItem.mContent;
|
|
nsStyleContext* const styleContext = aItem.mStyleContext;
|
|
|
|
// Construct a frame-based listbox or combobox
|
|
nsCOMPtr<nsIDOMHTMLSelectElement> sel(do_QueryInterface(content));
|
|
PRInt32 size = 1;
|
|
if (sel) {
|
|
sel->GetSize(&size);
|
|
PRBool multipleSelect = PR_FALSE;
|
|
sel->GetMultiple(&multipleSelect);
|
|
// Construct a combobox if size=1 or no size is specified and its multiple select
|
|
if (((1 == size || 0 == size) || (kNoSizeSpecified == size)) && (PR_FALSE == multipleSelect)) {
|
|
// Construct a frame-based combo box.
|
|
// The frame-based combo box is built out of three parts. A display area, a button and
|
|
// a dropdown list. The display area and button are created through anonymous content.
|
|
// The drop-down list's frame is created explicitly. The combobox frame shares its content
|
|
// with the drop-down list.
|
|
PRUint32 flags = NS_BLOCK_FLOAT_MGR;
|
|
nsIFrame* comboboxFrame = NS_NewComboboxControlFrame(mPresShell, styleContext, flags);
|
|
|
|
// Save the history state so we don't restore during construction
|
|
// since the complete tree is required before we restore.
|
|
nsILayoutHistoryState *historyState = aState.mFrameState;
|
|
aState.mFrameState = nsnull;
|
|
// Initialize the combobox frame
|
|
InitAndRestoreFrame(aState, content,
|
|
aState.GetGeometricParent(aStyleDisplay, aParentFrame),
|
|
nsnull, comboboxFrame);
|
|
|
|
rv = aState.AddChild(comboboxFrame, aFrameItems, content, styleContext,
|
|
aParentFrame);
|
|
if (NS_FAILED(rv)) {
|
|
return rv;
|
|
}
|
|
|
|
nsIComboboxControlFrame* comboBox = do_QueryFrame(comboboxFrame);
|
|
NS_ASSERTION(comboBox, "NS_NewComboboxControlFrame returned frame that "
|
|
"doesn't implement nsIComboboxControlFrame");
|
|
|
|
// Resolve pseudo element style for the dropdown list
|
|
nsRefPtr<nsStyleContext> listStyle;
|
|
listStyle = mPresShell->StyleSet()->
|
|
ResolveAnonymousBoxStyle(nsCSSAnonBoxes::dropDownList, styleContext);
|
|
|
|
// Create a listbox
|
|
nsIFrame* listFrame = NS_NewListControlFrame(mPresShell, listStyle);
|
|
|
|
// Notify the listbox that it is being used as a dropdown list.
|
|
nsIListControlFrame * listControlFrame = do_QueryFrame(listFrame);
|
|
if (listControlFrame) {
|
|
listControlFrame->SetComboboxFrame(comboboxFrame);
|
|
}
|
|
// Notify combobox that it should use the listbox as it's popup
|
|
comboBox->SetDropDown(listFrame);
|
|
|
|
NS_ASSERTION(!listStyle->GetStyleDisplay()->IsPositioned(),
|
|
"Ended up with positioned dropdown list somehow.");
|
|
NS_ASSERTION(!listStyle->GetStyleDisplay()->IsFloating(),
|
|
"Ended up with floating dropdown list somehow.");
|
|
|
|
// Initialize the scroll frame positioned. Note that it is NOT
|
|
// initialized as absolutely positioned.
|
|
nsIFrame* scrolledFrame = NS_NewSelectsAreaFrame(mPresShell, styleContext, flags);
|
|
|
|
InitializeSelectFrame(aState, listFrame, scrolledFrame, content,
|
|
comboboxFrame, listStyle, PR_TRUE,
|
|
aItem.mPendingBinding, aFrameItems);
|
|
|
|
NS_ASSERTION(listFrame->GetView(), "ListFrame's view is nsnull");
|
|
|
|
// Create display and button frames from the combobox's anonymous content.
|
|
// The anonymous content is appended to existing anonymous content for this
|
|
// element (the scrollbars).
|
|
|
|
nsFrameItems childItems;
|
|
CreateAnonymousFrames(aState, content, comboboxFrame,
|
|
aItem.mPendingBinding, childItems);
|
|
|
|
comboboxFrame->SetInitialChildList(nsnull, childItems);
|
|
|
|
// Initialize the additional popup child list which contains the
|
|
// dropdown list frame.
|
|
nsFrameItems popupItems;
|
|
popupItems.AddChild(listFrame);
|
|
comboboxFrame->SetInitialChildList(nsGkAtoms::selectPopupList,
|
|
popupItems);
|
|
|
|
*aNewFrame = comboboxFrame;
|
|
aState.mFrameState = historyState;
|
|
if (aState.mFrameState && aState.mFrameManager) {
|
|
// Restore frame state for the entire subtree of |comboboxFrame|.
|
|
aState.mFrameManager->RestoreFrameState(comboboxFrame,
|
|
aState.mFrameState);
|
|
}
|
|
} else {
|
|
nsIFrame* listFrame = NS_NewListControlFrame(mPresShell, styleContext);
|
|
if (listFrame) {
|
|
rv = NS_OK;
|
|
}
|
|
else {
|
|
rv = NS_ERROR_OUT_OF_MEMORY;
|
|
}
|
|
|
|
nsIFrame* scrolledFrame = NS_NewSelectsAreaFrame(
|
|
mPresShell, styleContext, NS_BLOCK_FLOAT_MGR);
|
|
|
|
// ******* this code stolen from Initialze ScrollFrame ********
|
|
// please adjust this code to use BuildScrollFrame.
|
|
|
|
InitializeSelectFrame(aState, listFrame, scrolledFrame, content,
|
|
aParentFrame, styleContext, PR_FALSE,
|
|
aItem.mPendingBinding, aFrameItems);
|
|
|
|
*aNewFrame = listFrame;
|
|
}
|
|
}
|
|
return rv;
|
|
|
|
}
|
|
|
|
/**
|
|
* Used to be InitializeScrollFrame but now it's only used for the select tag
|
|
* But the select tag should really be fixed to use GFX scrollbars that can
|
|
* be create with BuildScrollFrame.
|
|
*/
|
|
nsresult
|
|
nsCSSFrameConstructor::InitializeSelectFrame(nsFrameConstructorState& aState,
|
|
nsIFrame* scrollFrame,
|
|
nsIFrame* scrolledFrame,
|
|
nsIContent* aContent,
|
|
nsIFrame* aParentFrame,
|
|
nsStyleContext* aStyleContext,
|
|
PRBool aBuildCombobox,
|
|
PendingBinding* aPendingBinding,
|
|
nsFrameItems& aFrameItems)
|
|
{
|
|
const nsStyleDisplay* display = aStyleContext->GetStyleDisplay();
|
|
|
|
// Initialize it
|
|
nsIFrame* geometricParent = aState.GetGeometricParent(display, aParentFrame);
|
|
|
|
// We don't call InitAndRestoreFrame for scrollFrame because we can only
|
|
// restore the frame state after its parts have been created (in particular,
|
|
// the scrollable view). So we have to split Init and Restore.
|
|
|
|
// Initialize the frame
|
|
scrollFrame->Init(aContent, geometricParent, nsnull);
|
|
|
|
if (!aBuildCombobox) {
|
|
nsresult rv = aState.AddChild(scrollFrame, aFrameItems, aContent,
|
|
aStyleContext, aParentFrame);
|
|
if (NS_FAILED(rv)) {
|
|
return rv;
|
|
}
|
|
}
|
|
|
|
if (aBuildCombobox) {
|
|
nsContainerFrame::CreateViewForFrame(scrollFrame, PR_TRUE);
|
|
}
|
|
|
|
BuildScrollFrame(aState, aContent, aStyleContext, scrolledFrame,
|
|
geometricParent, scrollFrame);
|
|
|
|
if (aState.mFrameState && aState.mFrameManager) {
|
|
// Restore frame state for the scroll frame
|
|
aState.mFrameManager->RestoreFrameStateFor(scrollFrame, aState.mFrameState);
|
|
}
|
|
|
|
// Process children
|
|
nsFrameConstructorSaveState absoluteSaveState;
|
|
nsFrameItems childItems;
|
|
|
|
if (display->IsPositioned()) {
|
|
// The area frame becomes a container for child frames that are
|
|
// absolutely positioned
|
|
aState.PushAbsoluteContainingBlock(scrolledFrame, absoluteSaveState);
|
|
}
|
|
|
|
ProcessChildren(aState, aContent, aStyleContext, scrolledFrame, PR_FALSE,
|
|
childItems, PR_FALSE, aPendingBinding);
|
|
|
|
// Set the scrolled frame's initial child lists
|
|
scrolledFrame->SetInitialChildList(nsnull, childItems);
|
|
return NS_OK;
|
|
}
|
|
|
|
nsresult
|
|
nsCSSFrameConstructor::ConstructFieldSetFrame(nsFrameConstructorState& aState,
|
|
FrameConstructionItem& aItem,
|
|
nsIFrame* aParentFrame,
|
|
const nsStyleDisplay* aStyleDisplay,
|
|
nsFrameItems& aFrameItems,
|
|
nsIFrame** aNewFrame)
|
|
{
|
|
nsIContent* const content = aItem.mContent;
|
|
nsStyleContext* const styleContext = aItem.mStyleContext;
|
|
|
|
nsIFrame* newFrame = NS_NewFieldSetFrame(mPresShell, styleContext);
|
|
if (NS_UNLIKELY(!newFrame)) {
|
|
return NS_ERROR_OUT_OF_MEMORY;
|
|
}
|
|
|
|
// Initialize it
|
|
InitAndRestoreFrame(aState, content,
|
|
aState.GetGeometricParent(aStyleDisplay, aParentFrame),
|
|
nsnull, newFrame);
|
|
|
|
// Resolve style and initialize the frame
|
|
nsRefPtr<nsStyleContext> fieldsetContentStyle;
|
|
fieldsetContentStyle = mPresShell->StyleSet()->
|
|
ResolveAnonymousBoxStyle(nsCSSAnonBoxes::fieldsetContent, styleContext);
|
|
|
|
nsIFrame* blockFrame = NS_NewBlockFrame(mPresShell, fieldsetContentStyle,
|
|
NS_BLOCK_FLOAT_MGR |
|
|
NS_BLOCK_MARGIN_ROOT);
|
|
InitAndRestoreFrame(aState, content, newFrame, nsnull, blockFrame);
|
|
|
|
nsresult rv = aState.AddChild(newFrame, aFrameItems, content, styleContext,
|
|
aParentFrame);
|
|
if (NS_FAILED(rv)) {
|
|
return rv;
|
|
}
|
|
|
|
// Process children
|
|
nsFrameConstructorSaveState absoluteSaveState;
|
|
nsFrameItems childItems;
|
|
|
|
if (aStyleDisplay->IsPositioned()) {
|
|
// The area frame becomes a container for child frames that are
|
|
// absolutely positioned
|
|
// XXXbz this is probably wrong, and once arbitrary frames can be absolute
|
|
// containing blocks we should fix this..
|
|
aState.PushAbsoluteContainingBlock(blockFrame, absoluteSaveState);
|
|
}
|
|
|
|
ProcessChildren(aState, content, styleContext, blockFrame, PR_TRUE,
|
|
childItems, PR_TRUE, aItem.mPendingBinding);
|
|
|
|
nsFrameItems fieldsetKids;
|
|
fieldsetKids.AddChild(blockFrame);
|
|
|
|
for (nsFrameList::Enumerator e(childItems); !e.AtEnd(); e.Next()) {
|
|
nsLegendFrame* legendFrame = do_QueryFrame(e.get());
|
|
if (legendFrame) {
|
|
// We want the legend to be the first frame in the fieldset child list.
|
|
// That way the EventStateManager will do the right thing when tabbing
|
|
// from a selection point within the legend (bug 236071), which is
|
|
// used for implementing legend access keys (bug 81481).
|
|
// GetAdjustedParentFrame() below depends on this frame order.
|
|
childItems.RemoveFrame(legendFrame);
|
|
// Make sure to reparent the legend so it has the fieldset as the parent.
|
|
fieldsetKids.InsertFrame(newFrame, nsnull, legendFrame);
|
|
break;
|
|
}
|
|
}
|
|
|
|
// Set the inner frame's initial child lists
|
|
blockFrame->SetInitialChildList(nsnull, childItems);
|
|
|
|
// Set the outer frame's initial child list
|
|
newFrame->SetInitialChildList(nsnull, fieldsetKids);
|
|
|
|
// our new frame returned is the top frame which is the list frame.
|
|
*aNewFrame = newFrame;
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
static nsIFrame*
|
|
FindAncestorWithGeneratedContentPseudo(nsIFrame* aFrame)
|
|
{
|
|
for (nsIFrame* f = aFrame->GetParent(); f; f = f->GetParent()) {
|
|
NS_ASSERTION(f->IsGeneratedContentFrame(),
|
|
"should not have exited generated content");
|
|
nsIAtom* pseudo = f->GetStyleContext()->GetPseudo();
|
|
if (pseudo == nsCSSPseudoElements::before ||
|
|
pseudo == nsCSSPseudoElements::after)
|
|
return f;
|
|
}
|
|
return nsnull;
|
|
}
|
|
|
|
#define SIMPLE_FCDATA(_func) FCDATA_DECL(0, _func)
|
|
#define FULL_CTOR_FCDATA(_flags, _func) \
|
|
{ _flags | FCDATA_FUNC_IS_FULL_CTOR, { nsnull }, _func }
|
|
|
|
/* static */
|
|
const nsCSSFrameConstructor::FrameConstructionData*
|
|
nsCSSFrameConstructor::FindTextData(nsIFrame* aParentFrame)
|
|
{
|
|
if (aParentFrame && aParentFrame->IsFrameOfType(nsIFrame::eSVG)) {
|
|
nsIFrame *ancestorFrame =
|
|
nsSVGUtils::GetFirstNonAAncestorFrame(aParentFrame);
|
|
if (ancestorFrame) {
|
|
nsSVGTextContainerFrame* metrics = do_QueryFrame(ancestorFrame);
|
|
if (metrics) {
|
|
static const FrameConstructionData sSVGGlyphData =
|
|
SIMPLE_FCDATA(NS_NewSVGGlyphFrame);
|
|
return &sSVGGlyphData;
|
|
}
|
|
}
|
|
return nsnull;
|
|
}
|
|
|
|
static const FrameConstructionData sTextData =
|
|
FCDATA_DECL(FCDATA_IS_LINE_PARTICIPANT, NS_NewTextFrame);
|
|
return &sTextData;
|
|
}
|
|
|
|
nsresult
|
|
nsCSSFrameConstructor::ConstructTextFrame(const FrameConstructionData* aData,
|
|
nsFrameConstructorState& aState,
|
|
nsIContent* aContent,
|
|
nsIFrame* aParentFrame,
|
|
nsStyleContext* aStyleContext,
|
|
nsFrameItems& aFrameItems)
|
|
{
|
|
NS_PRECONDITION(aData, "Must have frame construction data");
|
|
|
|
nsIFrame* newFrame = (*aData->mFunc.mCreationFunc)(mPresShell, aStyleContext);
|
|
|
|
if (NS_UNLIKELY(!newFrame))
|
|
return NS_ERROR_OUT_OF_MEMORY;
|
|
|
|
nsresult rv = InitAndRestoreFrame(aState, aContent, aParentFrame,
|
|
nsnull, newFrame);
|
|
|
|
if (NS_FAILED(rv)) {
|
|
newFrame->Destroy();
|
|
return rv;
|
|
}
|
|
|
|
// We never need to create a view for a text frame.
|
|
|
|
if (newFrame->IsGeneratedContentFrame()) {
|
|
nsAutoPtr<nsGenConInitializer> initializer;
|
|
initializer =
|
|
static_cast<nsGenConInitializer*>(
|
|
aContent->UnsetProperty(nsGkAtoms::genConInitializerProperty));
|
|
if (initializer) {
|
|
if (initializer->mNode->InitTextFrame(initializer->mList,
|
|
FindAncestorWithGeneratedContentPseudo(newFrame), newFrame)) {
|
|
(this->*(initializer->mDirtyAll))();
|
|
}
|
|
initializer->mNode.forget();
|
|
}
|
|
}
|
|
|
|
// Add the newly constructed frame to the flow
|
|
aFrameItems.AddChild(newFrame);
|
|
|
|
if (!aState.mCreatingExtraFrames)
|
|
aContent->SetPrimaryFrame(newFrame);
|
|
|
|
return rv;
|
|
}
|
|
|
|
/* static */
|
|
const nsCSSFrameConstructor::FrameConstructionData*
|
|
nsCSSFrameConstructor::FindDataByInt(PRInt32 aInt,
|
|
Element* aElement,
|
|
nsStyleContext* aStyleContext,
|
|
const FrameConstructionDataByInt* aDataPtr,
|
|
PRUint32 aDataLength)
|
|
{
|
|
for (const FrameConstructionDataByInt *curData = aDataPtr,
|
|
*endData = aDataPtr + aDataLength;
|
|
curData != endData;
|
|
++curData) {
|
|
if (curData->mInt == aInt) {
|
|
const FrameConstructionData* data = &curData->mData;
|
|
if (data->mBits & FCDATA_FUNC_IS_DATA_GETTER) {
|
|
return data->mFunc.mDataGetter(aElement, aStyleContext);
|
|
}
|
|
|
|
return data;
|
|
}
|
|
}
|
|
|
|
return nsnull;
|
|
}
|
|
|
|
/* static */
|
|
const nsCSSFrameConstructor::FrameConstructionData*
|
|
nsCSSFrameConstructor::FindDataByTag(nsIAtom* aTag,
|
|
Element* aElement,
|
|
nsStyleContext* aStyleContext,
|
|
const FrameConstructionDataByTag* aDataPtr,
|
|
PRUint32 aDataLength)
|
|
{
|
|
for (const FrameConstructionDataByTag *curData = aDataPtr,
|
|
*endData = aDataPtr + aDataLength;
|
|
curData != endData;
|
|
++curData) {
|
|
if (*curData->mTag == aTag) {
|
|
const FrameConstructionData* data = &curData->mData;
|
|
if (data->mBits & FCDATA_FUNC_IS_DATA_GETTER) {
|
|
return data->mFunc.mDataGetter(aElement, aStyleContext);
|
|
}
|
|
|
|
return data;
|
|
}
|
|
}
|
|
|
|
return nsnull;
|
|
}
|
|
|
|
#define SUPPRESS_FCDATA() FCDATA_DECL(FCDATA_SUPPRESS_FRAME, nsnull)
|
|
#define SIMPLE_INT_CREATE(_int, _func) { _int, SIMPLE_FCDATA(_func) }
|
|
#define SIMPLE_INT_CHAIN(_int, _func) \
|
|
{ _int, FCDATA_DECL(FCDATA_FUNC_IS_DATA_GETTER, _func) }
|
|
#define COMPLEX_INT_CREATE(_int, _func) \
|
|
{ _int, FULL_CTOR_FCDATA(0, _func) }
|
|
|
|
#define SIMPLE_TAG_CREATE(_tag, _func) \
|
|
{ &nsGkAtoms::_tag, SIMPLE_FCDATA(_func) }
|
|
#define SIMPLE_TAG_CHAIN(_tag, _func) \
|
|
{ &nsGkAtoms::_tag, FCDATA_DECL(FCDATA_FUNC_IS_DATA_GETTER, _func) }
|
|
#define COMPLEX_TAG_CREATE(_tag, _func) \
|
|
{ &nsGkAtoms::_tag, FULL_CTOR_FCDATA(0, _func) }
|
|
|
|
/* static */
|
|
const nsCSSFrameConstructor::FrameConstructionData*
|
|
nsCSSFrameConstructor::FindHTMLData(Element* aElement,
|
|
nsIAtom* aTag,
|
|
PRInt32 aNameSpaceID,
|
|
nsIFrame* aParentFrame,
|
|
nsStyleContext* aStyleContext)
|
|
{
|
|
// Ignore the tag if it's not HTML content and if it doesn't extend (via XBL)
|
|
// a valid HTML namespace. This check must match the one in
|
|
// ShouldHaveFirstLineStyle.
|
|
if (aNameSpaceID != kNameSpaceID_XHTML) {
|
|
return nsnull;
|
|
}
|
|
|
|
NS_ASSERTION(!aParentFrame ||
|
|
aParentFrame->GetStyleContext()->GetPseudo() !=
|
|
nsCSSAnonBoxes::fieldsetContent ||
|
|
aParentFrame->GetParent()->GetType() == nsGkAtoms::fieldSetFrame,
|
|
"Unexpected parent for fieldset content anon box");
|
|
if (aTag == nsGkAtoms::legend &&
|
|
(!aParentFrame ||
|
|
(aParentFrame->GetType() != nsGkAtoms::fieldSetFrame &&
|
|
aParentFrame->GetStyleContext()->GetPseudo() !=
|
|
nsCSSAnonBoxes::fieldsetContent) ||
|
|
!aElement->GetParent() ||
|
|
!aElement->GetParent()->IsHTML(nsGkAtoms::fieldset) ||
|
|
aStyleContext->GetStyleDisplay()->IsFloating() ||
|
|
aStyleContext->GetStyleDisplay()->IsAbsolutelyPositioned())) {
|
|
// <legend> is only special inside fieldset, check both the frame tree
|
|
// parent and content tree parent due to XBL issues. For floated or
|
|
// absolutely positioned legends we want to construct by display type and
|
|
// not do special legend stuff.
|
|
// XXXbz it would be nice if we could just decide this based on the parent
|
|
// tag, and hence just use a SIMPLE_TAG_CHAIN for legend below, but the
|
|
// fact that with XBL we could end up with this legend element in some
|
|
// totally weird insertion point makes that chancy, I think.
|
|
return nsnull;
|
|
}
|
|
|
|
static const FrameConstructionDataByTag sHTMLData[] = {
|
|
SIMPLE_TAG_CHAIN(img, nsCSSFrameConstructor::FindImgData),
|
|
SIMPLE_TAG_CHAIN(mozgeneratedcontentimage,
|
|
nsCSSFrameConstructor::FindImgData),
|
|
{ &nsGkAtoms::br,
|
|
FCDATA_DECL(FCDATA_IS_LINE_PARTICIPANT | FCDATA_IS_LINE_BREAK,
|
|
NS_NewBRFrame) },
|
|
SIMPLE_TAG_CREATE(wbr, NS_NewWBRFrame),
|
|
SIMPLE_TAG_CHAIN(input, nsCSSFrameConstructor::FindInputData),
|
|
SIMPLE_TAG_CREATE(textarea, NS_NewTextControlFrame),
|
|
COMPLEX_TAG_CREATE(select, &nsCSSFrameConstructor::ConstructSelectFrame),
|
|
SIMPLE_TAG_CHAIN(object, nsCSSFrameConstructor::FindObjectData),
|
|
SIMPLE_TAG_CHAIN(applet, nsCSSFrameConstructor::FindObjectData),
|
|
SIMPLE_TAG_CHAIN(embed, nsCSSFrameConstructor::FindObjectData),
|
|
COMPLEX_TAG_CREATE(fieldset,
|
|
&nsCSSFrameConstructor::ConstructFieldSetFrame),
|
|
{ &nsGkAtoms::legend,
|
|
FCDATA_DECL(FCDATA_ALLOW_BLOCK_STYLES, NS_NewLegendFrame) },
|
|
SIMPLE_TAG_CREATE(frameset, NS_NewHTMLFramesetFrame),
|
|
SIMPLE_TAG_CREATE(iframe, NS_NewSubDocumentFrame),
|
|
COMPLEX_TAG_CREATE(button, &nsCSSFrameConstructor::ConstructButtonFrame),
|
|
SIMPLE_TAG_CREATE(canvas, NS_NewHTMLCanvasFrame),
|
|
#if defined(MOZ_MEDIA)
|
|
SIMPLE_TAG_CREATE(video, NS_NewHTMLVideoFrame),
|
|
SIMPLE_TAG_CREATE(audio, NS_NewHTMLVideoFrame),
|
|
#endif
|
|
SIMPLE_TAG_CREATE(isindex, NS_NewIsIndexFrame),
|
|
SIMPLE_TAG_CREATE(progress, NS_NewProgressFrame)
|
|
};
|
|
|
|
return FindDataByTag(aTag, aElement, aStyleContext, sHTMLData,
|
|
NS_ARRAY_LENGTH(sHTMLData));
|
|
}
|
|
|
|
/* static */
|
|
const nsCSSFrameConstructor::FrameConstructionData*
|
|
nsCSSFrameConstructor::FindImgData(Element* aElement,
|
|
nsStyleContext* aStyleContext)
|
|
{
|
|
if (!nsImageFrame::ShouldCreateImageFrameFor(aElement, aStyleContext)) {
|
|
return nsnull;
|
|
}
|
|
|
|
static const FrameConstructionData sImgData = SIMPLE_FCDATA(NS_NewImageFrame);
|
|
return &sImgData;
|
|
}
|
|
|
|
/* static */
|
|
const nsCSSFrameConstructor::FrameConstructionData*
|
|
nsCSSFrameConstructor::FindImgControlData(Element* aElement,
|
|
nsStyleContext* aStyleContext)
|
|
{
|
|
if (!nsImageFrame::ShouldCreateImageFrameFor(aElement, aStyleContext)) {
|
|
return nsnull;
|
|
}
|
|
|
|
static const FrameConstructionData sImgControlData =
|
|
SIMPLE_FCDATA(NS_NewImageControlFrame);
|
|
return &sImgControlData;
|
|
}
|
|
|
|
/* static */
|
|
const nsCSSFrameConstructor::FrameConstructionData*
|
|
nsCSSFrameConstructor::FindInputData(Element* aElement,
|
|
nsStyleContext* aStyleContext)
|
|
{
|
|
static const FrameConstructionDataByInt sInputData[] = {
|
|
SIMPLE_INT_CREATE(NS_FORM_INPUT_CHECKBOX, NS_NewGfxCheckboxControlFrame),
|
|
SIMPLE_INT_CREATE(NS_FORM_INPUT_RADIO, NS_NewGfxRadioControlFrame),
|
|
SIMPLE_INT_CREATE(NS_FORM_INPUT_FILE, NS_NewFileControlFrame),
|
|
SIMPLE_INT_CHAIN(NS_FORM_INPUT_IMAGE,
|
|
nsCSSFrameConstructor::FindImgControlData),
|
|
SIMPLE_INT_CREATE(NS_FORM_INPUT_EMAIL, NS_NewTextControlFrame),
|
|
SIMPLE_INT_CREATE(NS_FORM_INPUT_SEARCH, NS_NewTextControlFrame),
|
|
SIMPLE_INT_CREATE(NS_FORM_INPUT_TEXT, NS_NewTextControlFrame),
|
|
SIMPLE_INT_CREATE(NS_FORM_INPUT_TEL, NS_NewTextControlFrame),
|
|
SIMPLE_INT_CREATE(NS_FORM_INPUT_URL, NS_NewTextControlFrame),
|
|
SIMPLE_INT_CREATE(NS_FORM_INPUT_PASSWORD, NS_NewTextControlFrame),
|
|
COMPLEX_INT_CREATE(NS_FORM_INPUT_SUBMIT,
|
|
&nsCSSFrameConstructor::ConstructButtonFrame),
|
|
COMPLEX_INT_CREATE(NS_FORM_INPUT_RESET,
|
|
&nsCSSFrameConstructor::ConstructButtonFrame),
|
|
COMPLEX_INT_CREATE(NS_FORM_INPUT_BUTTON,
|
|
&nsCSSFrameConstructor::ConstructButtonFrame)
|
|
// Keeping hidden inputs out of here on purpose for so they get frames by
|
|
// display (in practice, none).
|
|
};
|
|
|
|
nsCOMPtr<nsIFormControl> control = do_QueryInterface(aElement);
|
|
NS_ASSERTION(control, "input doesn't implement nsIFormControl?");
|
|
|
|
return FindDataByInt(control->GetType(), aElement, aStyleContext,
|
|
sInputData, NS_ARRAY_LENGTH(sInputData));
|
|
}
|
|
|
|
/* static */
|
|
const nsCSSFrameConstructor::FrameConstructionData*
|
|
nsCSSFrameConstructor::FindObjectData(Element* aElement,
|
|
nsStyleContext* aStyleContext)
|
|
{
|
|
// GetDisplayedType isn't necessarily nsIObjectLoadingContent::TYPE_NULL for
|
|
// cases when the object is broken/suppressed/etc (e.g. a broken image), but
|
|
// we want to treat those cases as TYPE_NULL
|
|
PRUint32 type;
|
|
if (aElement->State().HasAtLeastOneOfStates(NS_EVENT_STATE_BROKEN |
|
|
NS_EVENT_STATE_USERDISABLED |
|
|
NS_EVENT_STATE_SUPPRESSED)) {
|
|
type = nsIObjectLoadingContent::TYPE_NULL;
|
|
} else {
|
|
nsCOMPtr<nsIObjectLoadingContent> objContent(do_QueryInterface(aElement));
|
|
NS_ASSERTION(objContent,
|
|
"applet, embed and object must implement "
|
|
"nsIObjectLoadingContent!");
|
|
|
|
objContent->GetDisplayedType(&type);
|
|
}
|
|
|
|
static const FrameConstructionDataByInt sObjectData[] = {
|
|
SIMPLE_INT_CREATE(nsIObjectLoadingContent::TYPE_LOADING,
|
|
NS_NewEmptyFrame),
|
|
SIMPLE_INT_CREATE(nsIObjectLoadingContent::TYPE_PLUGIN,
|
|
NS_NewObjectFrame),
|
|
SIMPLE_INT_CREATE(nsIObjectLoadingContent::TYPE_IMAGE,
|
|
NS_NewImageFrame),
|
|
SIMPLE_INT_CREATE(nsIObjectLoadingContent::TYPE_DOCUMENT,
|
|
NS_NewSubDocumentFrame)
|
|
// Nothing for TYPE_NULL so we'll construct frames by display there
|
|
};
|
|
|
|
return FindDataByInt((PRInt32)type, aElement, aStyleContext,
|
|
sObjectData, NS_ARRAY_LENGTH(sObjectData));
|
|
}
|
|
|
|
nsresult
|
|
nsCSSFrameConstructor::ConstructFrameFromItemInternal(FrameConstructionItem& aItem,
|
|
nsFrameConstructorState& aState,
|
|
nsIFrame* aParentFrame,
|
|
nsFrameItems& aFrameItems)
|
|
{
|
|
const FrameConstructionData* data = aItem.mFCData;
|
|
NS_ASSERTION(data, "Must have frame construction data");
|
|
|
|
PRUint32 bits = data->mBits;
|
|
|
|
NS_ASSERTION(!(bits & FCDATA_FUNC_IS_DATA_GETTER),
|
|
"Should have dealt with this inside the data finder");
|
|
|
|
// Some sets of bits are not compatible with each other
|
|
#define CHECK_ONLY_ONE_BIT(_bit1, _bit2) \
|
|
NS_ASSERTION(!(bits & _bit1) || !(bits & _bit2), \
|
|
"Only one of these bits should be set")
|
|
CHECK_ONLY_ONE_BIT(FCDATA_FUNC_IS_FULL_CTOR, FCDATA_FORCE_NULL_ABSPOS_CONTAINER);
|
|
CHECK_ONLY_ONE_BIT(FCDATA_FUNC_IS_FULL_CTOR, FCDATA_WRAP_KIDS_IN_BLOCKS);
|
|
CHECK_ONLY_ONE_BIT(FCDATA_FUNC_IS_FULL_CTOR, FCDATA_MAY_NEED_SCROLLFRAME);
|
|
CHECK_ONLY_ONE_BIT(FCDATA_FUNC_IS_FULL_CTOR, FCDATA_IS_POPUP);
|
|
CHECK_ONLY_ONE_BIT(FCDATA_FUNC_IS_FULL_CTOR, FCDATA_SKIP_ABSPOS_PUSH);
|
|
CHECK_ONLY_ONE_BIT(FCDATA_FUNC_IS_FULL_CTOR,
|
|
FCDATA_DISALLOW_GENERATED_CONTENT);
|
|
CHECK_ONLY_ONE_BIT(FCDATA_FUNC_IS_FULL_CTOR, FCDATA_ALLOW_BLOCK_STYLES);
|
|
#undef CHECK_ONLY_ONE_BIT
|
|
NS_ASSERTION(!(bits & FCDATA_FORCED_NON_SCROLLABLE_BLOCK) ||
|
|
((bits & FCDATA_FUNC_IS_FULL_CTOR) &&
|
|
data->mFullConstructor ==
|
|
&nsCSSFrameConstructor::ConstructNonScrollableBlock),
|
|
"Unexpected FCDATA_FORCED_NON_SCROLLABLE_BLOCK flag");
|
|
|
|
// Don't create a subdocument frame for iframes if we're creating extra frames
|
|
if (aState.mCreatingExtraFrames && aItem.mContent->IsHTML() &&
|
|
aItem.mContent->Tag() == nsGkAtoms::iframe)
|
|
{
|
|
return NS_OK;
|
|
}
|
|
|
|
nsStyleContext* const styleContext = aItem.mStyleContext;
|
|
const nsStyleDisplay* display = styleContext->GetStyleDisplay();
|
|
|
|
nsIFrame* newFrame;
|
|
nsIFrame* primaryFrame;
|
|
if (bits & FCDATA_FUNC_IS_FULL_CTOR) {
|
|
nsresult rv =
|
|
(this->*(data->mFullConstructor))(aState, aItem, aParentFrame,
|
|
display, aFrameItems, &newFrame);
|
|
if (NS_FAILED(rv)) {
|
|
return rv;
|
|
}
|
|
|
|
primaryFrame = newFrame;
|
|
} else {
|
|
nsIContent* const content = aItem.mContent;
|
|
|
|
newFrame =
|
|
(*data->mFunc.mCreationFunc)(mPresShell, styleContext);
|
|
if (!newFrame) {
|
|
return NS_ERROR_OUT_OF_MEMORY;
|
|
}
|
|
|
|
PRBool allowOutOfFlow = !(bits & FCDATA_DISALLOW_OUT_OF_FLOW);
|
|
PRBool isPopup = aItem.mIsPopup;
|
|
NS_ASSERTION(!isPopup ||
|
|
(aState.mPopupItems.containingBlock &&
|
|
aState.mPopupItems.containingBlock->GetType() ==
|
|
nsGkAtoms::popupSetFrame),
|
|
"Should have a containing block here!");
|
|
|
|
nsIFrame* geometricParent =
|
|
isPopup ? aState.mPopupItems.containingBlock :
|
|
(allowOutOfFlow ? aState.GetGeometricParent(display, aParentFrame)
|
|
: aParentFrame);
|
|
|
|
nsresult rv = NS_OK;
|
|
|
|
// Must init frameToAddToList to null, since it's inout
|
|
nsIFrame* frameToAddToList = nsnull;
|
|
if ((bits & FCDATA_MAY_NEED_SCROLLFRAME) &&
|
|
display->IsScrollableOverflow()) {
|
|
BuildScrollFrame(aState, content, styleContext, newFrame,
|
|
geometricParent, frameToAddToList);
|
|
} else {
|
|
rv = InitAndRestoreFrame(aState, content, geometricParent, nsnull,
|
|
newFrame);
|
|
NS_ASSERTION(NS_SUCCEEDED(rv), "InitAndRestoreFrame failed");
|
|
// See whether we need to create a view
|
|
nsContainerFrame::CreateViewForFrame(newFrame, PR_FALSE);
|
|
frameToAddToList = newFrame;
|
|
}
|
|
|
|
// Use frameToAddToList as the primary frame. In the non-scrollframe case
|
|
// they're equal, but in the scrollframe case newFrame is the scrolled
|
|
// frame, while frameToAddToList is the scrollframe (and should be the
|
|
// primary frame).
|
|
primaryFrame = frameToAddToList;
|
|
|
|
rv = aState.AddChild(frameToAddToList, aFrameItems, content, styleContext,
|
|
aParentFrame, allowOutOfFlow, allowOutOfFlow, isPopup);
|
|
if (NS_FAILED(rv)) {
|
|
return rv;
|
|
}
|
|
|
|
#ifdef MOZ_XUL
|
|
// Icky XUL stuff, sadly
|
|
|
|
if (aItem.mIsRootPopupgroup) {
|
|
NS_ASSERTION(nsIRootBox::GetRootBox(mPresShell) &&
|
|
nsIRootBox::GetRootBox(mPresShell)->GetPopupSetFrame() ==
|
|
newFrame,
|
|
"Unexpected PopupSetFrame");
|
|
aState.mPopupItems.containingBlock = newFrame;
|
|
aState.mHavePendingPopupgroup = PR_FALSE;
|
|
}
|
|
#endif /* MOZ_XUL */
|
|
|
|
// Process the child content if requested
|
|
nsFrameItems childItems;
|
|
nsFrameConstructorSaveState absoluteSaveState;
|
|
|
|
if (bits & FCDATA_FORCE_NULL_ABSPOS_CONTAINER) {
|
|
aState.PushAbsoluteContainingBlock(nsnull, absoluteSaveState);
|
|
} else if (!(bits & FCDATA_SKIP_ABSPOS_PUSH) && display->IsPositioned()) {
|
|
aState.PushAbsoluteContainingBlock(newFrame, absoluteSaveState);
|
|
}
|
|
|
|
if (bits & FCDATA_USE_CHILD_ITEMS) {
|
|
rv = ConstructFramesFromItemList(aState, aItem.mChildItems, newFrame,
|
|
childItems);
|
|
} else {
|
|
// Process the child frames.
|
|
rv = ProcessChildren(aState, content, styleContext, newFrame,
|
|
!(bits & FCDATA_DISALLOW_GENERATED_CONTENT),
|
|
childItems,
|
|
(bits & FCDATA_ALLOW_BLOCK_STYLES) != 0,
|
|
aItem.mPendingBinding);
|
|
}
|
|
|
|
#ifdef MOZ_XUL
|
|
// More icky XUL stuff
|
|
if (aItem.mNameSpaceID == kNameSpaceID_XUL &&
|
|
(aItem.mTag == nsGkAtoms::treechildren || // trees always need titletips
|
|
content->HasAttr(kNameSpaceID_None, nsGkAtoms::tooltiptext) ||
|
|
content->HasAttr(kNameSpaceID_None, nsGkAtoms::tooltip))) {
|
|
nsIRootBox* rootBox = nsIRootBox::GetRootBox(mPresShell);
|
|
if (rootBox) {
|
|
rootBox->AddTooltipSupport(content);
|
|
}
|
|
}
|
|
#endif
|
|
|
|
if (NS_SUCCEEDED(rv) && (bits & FCDATA_WRAP_KIDS_IN_BLOCKS)) {
|
|
nsFrameItems newItems;
|
|
nsFrameItems currentBlock;
|
|
nsIFrame* f;
|
|
while ((f = childItems.FirstChild()) != nsnull) {
|
|
PRBool wrapFrame = IsInlineFrame(f) || IsFrameSpecial(f);
|
|
if (!wrapFrame) {
|
|
rv = FlushAccumulatedBlock(aState, content, newFrame, ¤tBlock, &newItems);
|
|
if (NS_FAILED(rv))
|
|
break;
|
|
}
|
|
|
|
childItems.RemoveFrame(f);
|
|
if (wrapFrame) {
|
|
currentBlock.AddChild(f);
|
|
} else {
|
|
newItems.AddChild(f);
|
|
}
|
|
}
|
|
rv = FlushAccumulatedBlock(aState, content, newFrame, ¤tBlock, &newItems);
|
|
|
|
if (childItems.NotEmpty()) {
|
|
// an error must have occurred, delete unprocessed frames
|
|
childItems.DestroyFrames();
|
|
}
|
|
|
|
childItems = newItems;
|
|
}
|
|
|
|
// Set the frame's initial child list
|
|
// Note that MathML depends on this being called even if
|
|
// childItems is empty!
|
|
newFrame->SetInitialChildList(nsnull, childItems);
|
|
}
|
|
|
|
NS_ASSERTION(newFrame->IsFrameOfType(nsIFrame::eLineParticipant) ==
|
|
((bits & FCDATA_IS_LINE_PARTICIPANT) != 0),
|
|
"Incorrectly set FCDATA_IS_LINE_PARTICIPANT bits");
|
|
|
|
if (!aState.mCreatingExtraFrames && !(bits & FCDATA_SKIP_FRAMESET)) {
|
|
aItem.mContent->SetPrimaryFrame(primaryFrame);
|
|
}
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
// after the node has been constructed and initialized create any
|
|
// anonymous content a node needs.
|
|
nsresult
|
|
nsCSSFrameConstructor::CreateAnonymousFrames(nsFrameConstructorState& aState,
|
|
nsIContent* aParent,
|
|
nsIFrame* aParentFrame,
|
|
PendingBinding* aPendingBinding,
|
|
nsFrameItems& aChildItems)
|
|
{
|
|
nsAutoTArray<nsIAnonymousContentCreator::ContentInfo, 4> newAnonymousItems;
|
|
nsresult rv = GetAnonymousContent(aParent, aParentFrame, newAnonymousItems);
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
|
|
PRUint32 count = newAnonymousItems.Length();
|
|
if (count == 0) {
|
|
return NS_OK;
|
|
}
|
|
|
|
nsFrameConstructorState::PendingBindingAutoPusher pusher(aState,
|
|
aPendingBinding);
|
|
|
|
nsIAnonymousContentCreator* creator = do_QueryFrame(aParentFrame);
|
|
NS_ASSERTION(creator,
|
|
"How can that happen if we have nodes to construct frames for?");
|
|
|
|
for (PRUint32 i=0; i < count; i++) {
|
|
nsIContent* content = newAnonymousItems[i].mContent;
|
|
NS_ASSERTION(content, "null anonymous content?");
|
|
NS_ASSERTION(!newAnonymousItems[i].mStyleContext, "Unexpected style context");
|
|
|
|
nsIFrame* newFrame = creator->CreateFrameFor(content);
|
|
if (newFrame) {
|
|
NS_ASSERTION(content->GetPrimaryFrame(),
|
|
"Content must have a primary frame now");
|
|
aChildItems.AddChild(newFrame);
|
|
}
|
|
else {
|
|
// create the frame and attach it to our frame
|
|
ConstructFrame(aState, content, aParentFrame, aChildItems);
|
|
}
|
|
}
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
nsresult
|
|
nsCSSFrameConstructor::GetAnonymousContent(nsIContent* aParent,
|
|
nsIFrame* aParentFrame,
|
|
nsTArray<nsIAnonymousContentCreator::ContentInfo>& aContent)
|
|
{
|
|
nsIAnonymousContentCreator* creator = do_QueryFrame(aParentFrame);
|
|
if (!creator)
|
|
return NS_OK;
|
|
|
|
nsresult rv = creator->CreateAnonymousContent(aContent);
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
|
|
PRUint32 count = aContent.Length();
|
|
for (PRUint32 i=0; i < count; i++) {
|
|
// get our child's content and set its parent to our content
|
|
nsIContent* content = aContent[i].mContent;
|
|
NS_ASSERTION(content, "null anonymous content?");
|
|
|
|
// least-surprise CSS binding until we do the SVG specified
|
|
// cascading rules for <svg:use> - bug 265894
|
|
if (aParent &&
|
|
aParent->NodeInfo()->Equals(nsGkAtoms::use, kNameSpaceID_SVG)) {
|
|
content->SetFlags(NODE_IS_ANONYMOUS);
|
|
} else {
|
|
content->SetNativeAnonymous();
|
|
}
|
|
|
|
rv = content->BindToTree(mDocument, aParent, aParent, PR_TRUE);
|
|
if (NS_FAILED(rv)) {
|
|
content->UnbindFromTree();
|
|
return rv;
|
|
}
|
|
}
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
static
|
|
PRBool IsXULDisplayType(const nsStyleDisplay* aDisplay)
|
|
{
|
|
return (aDisplay->mDisplay == NS_STYLE_DISPLAY_INLINE_BOX ||
|
|
#ifdef MOZ_XUL
|
|
aDisplay->mDisplay == NS_STYLE_DISPLAY_INLINE_GRID ||
|
|
aDisplay->mDisplay == NS_STYLE_DISPLAY_INLINE_STACK ||
|
|
#endif
|
|
aDisplay->mDisplay == NS_STYLE_DISPLAY_BOX
|
|
#ifdef MOZ_XUL
|
|
|| aDisplay->mDisplay == NS_STYLE_DISPLAY_GRID ||
|
|
aDisplay->mDisplay == NS_STYLE_DISPLAY_STACK ||
|
|
aDisplay->mDisplay == NS_STYLE_DISPLAY_GRID_GROUP ||
|
|
aDisplay->mDisplay == NS_STYLE_DISPLAY_GRID_LINE ||
|
|
aDisplay->mDisplay == NS_STYLE_DISPLAY_DECK ||
|
|
aDisplay->mDisplay == NS_STYLE_DISPLAY_POPUP ||
|
|
aDisplay->mDisplay == NS_STYLE_DISPLAY_GROUPBOX
|
|
#endif
|
|
);
|
|
}
|
|
|
|
|
|
// XUL frames are not allowed to be out of flow.
|
|
#define SIMPLE_XUL_FCDATA(_func) \
|
|
FCDATA_DECL(FCDATA_DISALLOW_OUT_OF_FLOW | FCDATA_SKIP_ABSPOS_PUSH, \
|
|
_func)
|
|
#define SCROLLABLE_XUL_FCDATA(_func) \
|
|
FCDATA_DECL(FCDATA_DISALLOW_OUT_OF_FLOW | FCDATA_SKIP_ABSPOS_PUSH | \
|
|
FCDATA_MAY_NEED_SCROLLFRAME, _func)
|
|
#define SIMPLE_XUL_CREATE(_tag, _func) \
|
|
{ &nsGkAtoms::_tag, SIMPLE_XUL_FCDATA(_func) }
|
|
#define SCROLLABLE_XUL_CREATE(_tag, _func) \
|
|
{ &nsGkAtoms::_tag, SCROLLABLE_XUL_FCDATA(_func) }
|
|
#define SIMPLE_XUL_INT_CREATE(_int, _func) \
|
|
{ _int, SIMPLE_XUL_FCDATA(_func) }
|
|
#define SCROLLABLE_XUL_INT_CREATE(_int, _func) \
|
|
{ _int, SCROLLABLE_XUL_FCDATA(_func) }
|
|
|
|
static
|
|
nsIFrame* NS_NewGridBoxFrame(nsIPresShell* aPresShell,
|
|
nsStyleContext* aStyleContext)
|
|
{
|
|
nsCOMPtr<nsBoxLayout> layout;
|
|
NS_NewGridLayout2(aPresShell, getter_AddRefs(layout));
|
|
if (!layout) {
|
|
return nsnull;
|
|
}
|
|
|
|
return NS_NewBoxFrame(aPresShell, aStyleContext, PR_FALSE, layout);
|
|
}
|
|
|
|
/* static */
|
|
const nsCSSFrameConstructor::FrameConstructionData*
|
|
nsCSSFrameConstructor::FindXULTagData(Element* aElement,
|
|
nsIAtom* aTag,
|
|
PRInt32 aNameSpaceID,
|
|
nsStyleContext* aStyleContext)
|
|
{
|
|
if (aNameSpaceID != kNameSpaceID_XUL) {
|
|
return nsnull;
|
|
}
|
|
|
|
static const FrameConstructionDataByTag sXULTagData[] = {
|
|
#ifdef MOZ_XUL
|
|
SCROLLABLE_XUL_CREATE(button, NS_NewButtonBoxFrame),
|
|
SCROLLABLE_XUL_CREATE(checkbox, NS_NewButtonBoxFrame),
|
|
SCROLLABLE_XUL_CREATE(radio, NS_NewButtonBoxFrame),
|
|
SCROLLABLE_XUL_CREATE(autorepeatbutton, NS_NewAutoRepeatBoxFrame),
|
|
SCROLLABLE_XUL_CREATE(titlebar, NS_NewTitleBarFrame),
|
|
SCROLLABLE_XUL_CREATE(resizer, NS_NewResizerFrame),
|
|
SIMPLE_XUL_CREATE(image, NS_NewImageBoxFrame),
|
|
SIMPLE_XUL_CREATE(spring, NS_NewLeafBoxFrame),
|
|
SIMPLE_XUL_CREATE(spacer, NS_NewLeafBoxFrame),
|
|
SIMPLE_XUL_CREATE(treechildren, NS_NewTreeBodyFrame),
|
|
SIMPLE_XUL_CREATE(treecol, NS_NewTreeColFrame),
|
|
SIMPLE_XUL_CREATE(text, NS_NewTextBoxFrame),
|
|
SIMPLE_TAG_CHAIN(label, nsCSSFrameConstructor::FindXULLabelData),
|
|
SIMPLE_TAG_CHAIN(description, nsCSSFrameConstructor::FindXULDescriptionData),
|
|
SIMPLE_XUL_CREATE(menu, NS_NewMenuFrame),
|
|
SIMPLE_XUL_CREATE(menubutton, NS_NewMenuFrame),
|
|
SIMPLE_XUL_CREATE(menuitem, NS_NewMenuItemFrame),
|
|
#ifdef XP_MACOSX
|
|
SIMPLE_TAG_CHAIN(menubar, nsCSSFrameConstructor::FindXULMenubarData),
|
|
#else
|
|
SIMPLE_XUL_CREATE(menubar, NS_NewMenuBarFrame),
|
|
#endif /* XP_MACOSX */
|
|
SIMPLE_TAG_CHAIN(popupgroup, nsCSSFrameConstructor::FindPopupGroupData),
|
|
SIMPLE_XUL_CREATE(iframe, NS_NewSubDocumentFrame),
|
|
SIMPLE_XUL_CREATE(editor, NS_NewSubDocumentFrame),
|
|
SIMPLE_XUL_CREATE(browser, NS_NewSubDocumentFrame),
|
|
SIMPLE_XUL_CREATE(progressmeter, NS_NewProgressMeterFrame),
|
|
SIMPLE_XUL_CREATE(splitter, NS_NewSplitterFrame),
|
|
SIMPLE_TAG_CHAIN(listboxbody,
|
|
nsCSSFrameConstructor::FindXULListBoxBodyData),
|
|
SIMPLE_TAG_CHAIN(listitem, nsCSSFrameConstructor::FindXULListItemData),
|
|
#endif /* MOZ_XUL */
|
|
SIMPLE_XUL_CREATE(slider, NS_NewSliderFrame),
|
|
SIMPLE_XUL_CREATE(scrollbar, NS_NewScrollbarFrame),
|
|
SIMPLE_XUL_CREATE(scrollbarbutton, NS_NewScrollbarButtonFrame)
|
|
};
|
|
|
|
return FindDataByTag(aTag, aElement, aStyleContext, sXULTagData,
|
|
NS_ARRAY_LENGTH(sXULTagData));
|
|
}
|
|
|
|
#ifdef MOZ_XUL
|
|
/* static */
|
|
const nsCSSFrameConstructor::FrameConstructionData*
|
|
nsCSSFrameConstructor::FindPopupGroupData(Element* aElement,
|
|
nsStyleContext* /* unused */)
|
|
{
|
|
if (!aElement->IsRootOfNativeAnonymousSubtree()) {
|
|
return nsnull;
|
|
}
|
|
|
|
static const FrameConstructionData sPopupSetData =
|
|
SIMPLE_XUL_FCDATA(NS_NewPopupSetFrame);
|
|
return &sPopupSetData;
|
|
}
|
|
|
|
/* static */
|
|
const nsCSSFrameConstructor::FrameConstructionData
|
|
nsCSSFrameConstructor::sXULTextBoxData = SIMPLE_XUL_FCDATA(NS_NewTextBoxFrame);
|
|
|
|
/* static */
|
|
const nsCSSFrameConstructor::FrameConstructionData*
|
|
nsCSSFrameConstructor::FindXULLabelData(Element* aElement,
|
|
nsStyleContext* /* unused */)
|
|
{
|
|
if (aElement->HasAttr(kNameSpaceID_None, nsGkAtoms::value)) {
|
|
return &sXULTextBoxData;
|
|
}
|
|
|
|
static const FrameConstructionData sLabelData =
|
|
SIMPLE_XUL_FCDATA(NS_NewXULLabelFrame);
|
|
return &sLabelData;
|
|
}
|
|
|
|
static nsIFrame*
|
|
NS_NewXULDescriptionFrame(nsIPresShell* aPresShell, nsStyleContext *aContext)
|
|
{
|
|
// XXXbz do we really need to set those flags? If the parent is not
|
|
// a block we'll get them anyway, and if it is, do we want them?
|
|
return NS_NewBlockFrame(aPresShell, aContext,
|
|
NS_BLOCK_FLOAT_MGR | NS_BLOCK_MARGIN_ROOT);
|
|
}
|
|
|
|
/* static */
|
|
const nsCSSFrameConstructor::FrameConstructionData*
|
|
nsCSSFrameConstructor::FindXULDescriptionData(Element* aElement,
|
|
nsStyleContext* /* unused */)
|
|
{
|
|
if (aElement->HasAttr(kNameSpaceID_None, nsGkAtoms::value)) {
|
|
return &sXULTextBoxData;
|
|
}
|
|
|
|
static const FrameConstructionData sDescriptionData =
|
|
SIMPLE_XUL_FCDATA(NS_NewXULDescriptionFrame);
|
|
return &sDescriptionData;
|
|
}
|
|
|
|
#ifdef XP_MACOSX
|
|
/* static */
|
|
const nsCSSFrameConstructor::FrameConstructionData*
|
|
nsCSSFrameConstructor::FindXULMenubarData(Element* aElement,
|
|
nsStyleContext* aStyleContext)
|
|
{
|
|
nsCOMPtr<nsISupports> container =
|
|
aStyleContext->PresContext()->GetContainer();
|
|
if (container) {
|
|
nsCOMPtr<nsIDocShellTreeItem> treeItem(do_QueryInterface(container));
|
|
if (treeItem) {
|
|
PRInt32 type;
|
|
treeItem->GetItemType(&type);
|
|
if (nsIDocShellTreeItem::typeChrome == type) {
|
|
nsCOMPtr<nsIDocShellTreeItem> parent;
|
|
treeItem->GetParent(getter_AddRefs(parent));
|
|
if (!parent) {
|
|
// This is the root. Suppress the menubar, since on Mac
|
|
// window menus are not attached to the window.
|
|
static const FrameConstructionData sSuppressData = SUPPRESS_FCDATA();
|
|
return &sSuppressData;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
static const FrameConstructionData sMenubarData =
|
|
SIMPLE_XUL_FCDATA(NS_NewMenuBarFrame);
|
|
return &sMenubarData;
|
|
}
|
|
#endif /* XP_MACOSX */
|
|
|
|
/* static */
|
|
const nsCSSFrameConstructor::FrameConstructionData*
|
|
nsCSSFrameConstructor::FindXULListBoxBodyData(Element* aElement,
|
|
nsStyleContext* aStyleContext)
|
|
{
|
|
if (aStyleContext->GetStyleDisplay()->mDisplay !=
|
|
NS_STYLE_DISPLAY_GRID_GROUP) {
|
|
return nsnull;
|
|
}
|
|
|
|
static const FrameConstructionData sListBoxBodyData =
|
|
SCROLLABLE_XUL_FCDATA(NS_NewListBoxBodyFrame);
|
|
return &sListBoxBodyData;
|
|
}
|
|
|
|
/* static */
|
|
const nsCSSFrameConstructor::FrameConstructionData*
|
|
nsCSSFrameConstructor::FindXULListItemData(Element* aElement,
|
|
nsStyleContext* aStyleContext)
|
|
{
|
|
if (aStyleContext->GetStyleDisplay()->mDisplay !=
|
|
NS_STYLE_DISPLAY_GRID_LINE) {
|
|
return nsnull;
|
|
}
|
|
|
|
static const FrameConstructionData sListItemData =
|
|
SCROLLABLE_XUL_FCDATA(NS_NewListItemFrame);
|
|
return &sListItemData;
|
|
}
|
|
|
|
#endif /* MOZ_XUL */
|
|
|
|
/* static */
|
|
const nsCSSFrameConstructor::FrameConstructionData*
|
|
nsCSSFrameConstructor::FindXULDisplayData(const nsStyleDisplay* aDisplay,
|
|
Element* aElement,
|
|
nsStyleContext* aStyleContext)
|
|
{
|
|
static const FrameConstructionDataByInt sXULDisplayData[] = {
|
|
SCROLLABLE_XUL_INT_CREATE(NS_STYLE_DISPLAY_INLINE_BOX, NS_NewBoxFrame),
|
|
SCROLLABLE_XUL_INT_CREATE(NS_STYLE_DISPLAY_BOX, NS_NewBoxFrame),
|
|
#ifdef MOZ_XUL
|
|
SCROLLABLE_XUL_INT_CREATE(NS_STYLE_DISPLAY_INLINE_GRID, NS_NewGridBoxFrame),
|
|
SCROLLABLE_XUL_INT_CREATE(NS_STYLE_DISPLAY_GRID, NS_NewGridBoxFrame),
|
|
SCROLLABLE_XUL_INT_CREATE(NS_STYLE_DISPLAY_GRID_GROUP,
|
|
NS_NewGridRowGroupFrame),
|
|
SCROLLABLE_XUL_INT_CREATE(NS_STYLE_DISPLAY_GRID_LINE,
|
|
NS_NewGridRowLeafFrame),
|
|
SIMPLE_XUL_INT_CREATE(NS_STYLE_DISPLAY_DECK, NS_NewDeckFrame),
|
|
SCROLLABLE_XUL_INT_CREATE(NS_STYLE_DISPLAY_GROUPBOX, NS_NewGroupBoxFrame),
|
|
SCROLLABLE_XUL_INT_CREATE(NS_STYLE_DISPLAY_INLINE_STACK, NS_NewStackFrame),
|
|
SCROLLABLE_XUL_INT_CREATE(NS_STYLE_DISPLAY_STACK, NS_NewStackFrame),
|
|
{ NS_STYLE_DISPLAY_POPUP,
|
|
FCDATA_DECL(FCDATA_DISALLOW_OUT_OF_FLOW | FCDATA_IS_POPUP |
|
|
FCDATA_SKIP_ABSPOS_PUSH, NS_NewMenuPopupFrame) }
|
|
#endif /* MOZ_XUL */
|
|
};
|
|
|
|
// Processing by display here:
|
|
return FindDataByInt(aDisplay->mDisplay, aElement, aStyleContext,
|
|
sXULDisplayData, NS_ARRAY_LENGTH(sXULDisplayData));
|
|
}
|
|
|
|
already_AddRefed<nsStyleContext>
|
|
nsCSSFrameConstructor::BeginBuildingScrollFrame(nsFrameConstructorState& aState,
|
|
nsIContent* aContent,
|
|
nsStyleContext* aContentStyle,
|
|
nsIFrame* aParentFrame,
|
|
nsIAtom* aScrolledPseudo,
|
|
PRBool aIsRoot,
|
|
nsIFrame*& aNewFrame)
|
|
{
|
|
nsIFrame* gfxScrollFrame = aNewFrame;
|
|
|
|
nsFrameItems anonymousItems;
|
|
|
|
nsRefPtr<nsStyleContext> contentStyle = aContentStyle;
|
|
|
|
if (!gfxScrollFrame) {
|
|
// Build a XULScrollFrame when the child is a box, otherwise an
|
|
// HTMLScrollFrame
|
|
// XXXbz this is the lone remaining consumer of IsXULDisplayType.
|
|
// I wonder whether we can eliminate that somehow.
|
|
if (IsXULDisplayType(aContentStyle->GetStyleDisplay())) {
|
|
gfxScrollFrame = NS_NewXULScrollFrame(mPresShell, contentStyle, aIsRoot);
|
|
} else {
|
|
gfxScrollFrame = NS_NewHTMLScrollFrame(mPresShell, contentStyle, aIsRoot);
|
|
}
|
|
|
|
InitAndRestoreFrame(aState, aContent, aParentFrame, nsnull, gfxScrollFrame);
|
|
}
|
|
|
|
// if there are any anonymous children for the scroll frame, create
|
|
// frames for them.
|
|
// Pass a null pending binding: we don't care how constructors for any of
|
|
// this anonymous content order with anything else. It's never been
|
|
// consistent anyway.
|
|
CreateAnonymousFrames(aState, aContent, gfxScrollFrame, nsnull,
|
|
anonymousItems);
|
|
|
|
aNewFrame = gfxScrollFrame;
|
|
|
|
// we used the style that was passed in. So resolve another one.
|
|
nsStyleSet *styleSet = mPresShell->StyleSet();
|
|
nsStyleContext* aScrolledChildStyle =
|
|
styleSet->ResolveAnonymousBoxStyle(aScrolledPseudo, contentStyle).get();
|
|
|
|
if (gfxScrollFrame) {
|
|
gfxScrollFrame->SetInitialChildList(nsnull, anonymousItems);
|
|
}
|
|
|
|
return aScrolledChildStyle;
|
|
}
|
|
|
|
void
|
|
nsCSSFrameConstructor::FinishBuildingScrollFrame(nsIFrame* aScrollFrame,
|
|
nsIFrame* aScrolledFrame)
|
|
{
|
|
nsFrameList scrolled(aScrolledFrame, aScrolledFrame);
|
|
aScrollFrame->AppendFrames(nsnull, scrolled);
|
|
}
|
|
|
|
|
|
/**
|
|
* Called to wrap a gfx scrollframe around a frame. The hierarchy will look like this
|
|
*
|
|
* ------- for gfx scrollbars ------
|
|
*
|
|
*
|
|
* ScrollFrame
|
|
* ^
|
|
* |
|
|
* Frame (scrolled frame you passed in)
|
|
*
|
|
*
|
|
*-----------------------------------
|
|
* LEGEND:
|
|
*
|
|
* ScrollFrame: This is a frame that manages gfx cross platform frame based scrollbars.
|
|
*
|
|
* @param aContent the content node of the child to wrap.
|
|
* @param aScrolledFrame The frame of the content to wrap. This should not be
|
|
* Initialized. This method will initialize it with a scrolled pseudo
|
|
* and no nsIContent. The content will be attached to the scrollframe
|
|
* returned.
|
|
* @param aContentStyle the style context that has already been resolved for the content being passed in.
|
|
*
|
|
* @param aParentFrame The parent to attach the scroll frame to
|
|
*
|
|
* @param aNewFrame The new scrollframe or gfx scrollframe that we create. It will contain the
|
|
* scrolled frame you passed in. (returned)
|
|
* If this is not null, we'll just use it
|
|
* @param aScrolledContentStyle the style that was resolved for the scrolled frame. (returned)
|
|
*/
|
|
nsresult
|
|
nsCSSFrameConstructor::BuildScrollFrame(nsFrameConstructorState& aState,
|
|
nsIContent* aContent,
|
|
nsStyleContext* aContentStyle,
|
|
nsIFrame* aScrolledFrame,
|
|
nsIFrame* aParentFrame,
|
|
nsIFrame*& aNewFrame)
|
|
{
|
|
nsRefPtr<nsStyleContext> scrolledContentStyle =
|
|
BeginBuildingScrollFrame(aState, aContent, aContentStyle, aParentFrame,
|
|
nsCSSAnonBoxes::scrolledContent,
|
|
PR_FALSE, aNewFrame);
|
|
|
|
aScrolledFrame->SetStyleContextWithoutNotification(scrolledContentStyle);
|
|
InitAndRestoreFrame(aState, aContent, aNewFrame, nsnull, aScrolledFrame);
|
|
|
|
FinishBuildingScrollFrame(aNewFrame, aScrolledFrame);
|
|
return NS_OK;
|
|
}
|
|
|
|
const nsCSSFrameConstructor::FrameConstructionData*
|
|
nsCSSFrameConstructor::FindDisplayData(const nsStyleDisplay* aDisplay,
|
|
Element* aElement,
|
|
nsStyleContext* aStyleContext)
|
|
{
|
|
PR_STATIC_ASSERT(eParentTypeCount < (1 << (32 - FCDATA_PARENT_TYPE_OFFSET)));
|
|
|
|
// The style system ensures that floated and positioned frames are
|
|
// block-level.
|
|
NS_ASSERTION(!(aDisplay->IsFloating() ||
|
|
aDisplay->IsAbsolutelyPositioned()) ||
|
|
aDisplay->IsBlockOutside(),
|
|
"Style system did not apply CSS2.1 section 9.7 fixups");
|
|
|
|
// If this is "body", try propagating its scroll style to the viewport
|
|
// Note that we need to do this even if the body is NOT scrollable;
|
|
// it might have dynamically changed from scrollable to not scrollable,
|
|
// and that might need to be propagated.
|
|
// XXXbz is this the right place to do this? If this code moves,
|
|
// make this function static.
|
|
PRBool propagatedScrollToViewport = PR_FALSE;
|
|
if (aElement->IsHTML(nsGkAtoms::body)) {
|
|
propagatedScrollToViewport =
|
|
PropagateScrollToViewport() == aElement;
|
|
}
|
|
|
|
NS_ASSERTION(!propagatedScrollToViewport ||
|
|
!mPresShell->GetPresContext()->IsPaginated(),
|
|
"Shouldn't propagate scroll in paginated contexts");
|
|
|
|
// If the frame is a block-level frame and is scrollable, then wrap it in a
|
|
// scroll frame.
|
|
// XXX Ignore tables for the time being
|
|
// XXXbz it would be nice to combine this with the other block
|
|
// case... Think about how do do this?
|
|
if (aDisplay->IsBlockInside() &&
|
|
aDisplay->IsScrollableOverflow() &&
|
|
!propagatedScrollToViewport) {
|
|
// Except we don't want to do that for paginated contexts for
|
|
// frames that are block-outside and aren't frames for native
|
|
// anonymous stuff.
|
|
if (mPresShell->GetPresContext()->IsPaginated() &&
|
|
aDisplay->IsBlockOutside() &&
|
|
!aElement->IsInNativeAnonymousSubtree()) {
|
|
static const FrameConstructionData sForcedNonScrollableBlockData =
|
|
FULL_CTOR_FCDATA(FCDATA_FORCED_NON_SCROLLABLE_BLOCK,
|
|
&nsCSSFrameConstructor::ConstructNonScrollableBlock);
|
|
return &sForcedNonScrollableBlockData;
|
|
}
|
|
|
|
static const FrameConstructionData sScrollableBlockData =
|
|
FULL_CTOR_FCDATA(0, &nsCSSFrameConstructor::ConstructScrollableBlock);
|
|
return &sScrollableBlockData;
|
|
}
|
|
|
|
// Handle various non-scrollable blocks
|
|
if (aDisplay->IsBlockInside()) {
|
|
static const FrameConstructionData sNonScrollableBlockData =
|
|
FULL_CTOR_FCDATA(0, &nsCSSFrameConstructor::ConstructNonScrollableBlock);
|
|
return &sNonScrollableBlockData;
|
|
}
|
|
|
|
static const FrameConstructionDataByInt sDisplayData[] = {
|
|
// To keep the hash table small don't add inline frames (they're
|
|
// typically things like FONT and B), because we can quickly
|
|
// find them if we need to.
|
|
// XXXbz the "quickly" part is a bald-faced lie!
|
|
{ NS_STYLE_DISPLAY_INLINE,
|
|
FULL_CTOR_FCDATA(FCDATA_IS_INLINE | FCDATA_IS_LINE_PARTICIPANT,
|
|
&nsCSSFrameConstructor::ConstructInline) },
|
|
{ NS_STYLE_DISPLAY_TABLE,
|
|
FULL_CTOR_FCDATA(0, &nsCSSFrameConstructor::ConstructTable) },
|
|
{ NS_STYLE_DISPLAY_INLINE_TABLE,
|
|
FULL_CTOR_FCDATA(0, &nsCSSFrameConstructor::ConstructTable) },
|
|
{ NS_STYLE_DISPLAY_TABLE_CAPTION,
|
|
FCDATA_DECL(FCDATA_IS_TABLE_PART | FCDATA_ALLOW_BLOCK_STYLES |
|
|
FCDATA_DISALLOW_OUT_OF_FLOW | FCDATA_SKIP_ABSPOS_PUSH |
|
|
FCDATA_DESIRED_PARENT_TYPE_TO_BITS(eTypeTable),
|
|
NS_NewTableCaptionFrame) },
|
|
{ NS_STYLE_DISPLAY_TABLE_ROW_GROUP,
|
|
FCDATA_DECL(FCDATA_IS_TABLE_PART | FCDATA_DISALLOW_OUT_OF_FLOW |
|
|
FCDATA_SKIP_ABSPOS_PUSH |
|
|
FCDATA_DESIRED_PARENT_TYPE_TO_BITS(eTypeTable),
|
|
NS_NewTableRowGroupFrame) },
|
|
{ NS_STYLE_DISPLAY_TABLE_HEADER_GROUP,
|
|
FCDATA_DECL(FCDATA_IS_TABLE_PART | FCDATA_DISALLOW_OUT_OF_FLOW |
|
|
FCDATA_SKIP_ABSPOS_PUSH |
|
|
FCDATA_DESIRED_PARENT_TYPE_TO_BITS(eTypeTable),
|
|
NS_NewTableRowGroupFrame) },
|
|
{ NS_STYLE_DISPLAY_TABLE_FOOTER_GROUP,
|
|
FCDATA_DECL(FCDATA_IS_TABLE_PART | FCDATA_DISALLOW_OUT_OF_FLOW |
|
|
FCDATA_SKIP_ABSPOS_PUSH |
|
|
FCDATA_DESIRED_PARENT_TYPE_TO_BITS(eTypeTable),
|
|
NS_NewTableRowGroupFrame) },
|
|
{ NS_STYLE_DISPLAY_TABLE_COLUMN_GROUP,
|
|
FCDATA_DECL(FCDATA_IS_TABLE_PART | FCDATA_DISALLOW_OUT_OF_FLOW |
|
|
FCDATA_SKIP_ABSPOS_PUSH |
|
|
FCDATA_DESIRED_PARENT_TYPE_TO_BITS(eTypeTable),
|
|
NS_NewTableColGroupFrame) },
|
|
{ NS_STYLE_DISPLAY_TABLE_COLUMN,
|
|
FULL_CTOR_FCDATA(FCDATA_IS_TABLE_PART |
|
|
FCDATA_DESIRED_PARENT_TYPE_TO_BITS(eTypeColGroup),
|
|
&nsCSSFrameConstructor::ConstructTableCol) },
|
|
{ NS_STYLE_DISPLAY_TABLE_ROW,
|
|
FULL_CTOR_FCDATA(FCDATA_IS_TABLE_PART |
|
|
FCDATA_DESIRED_PARENT_TYPE_TO_BITS(eTypeRowGroup),
|
|
&nsCSSFrameConstructor::ConstructTableRow) },
|
|
{ NS_STYLE_DISPLAY_TABLE_CELL,
|
|
FULL_CTOR_FCDATA(FCDATA_IS_TABLE_PART |
|
|
FCDATA_DESIRED_PARENT_TYPE_TO_BITS(eTypeRow),
|
|
&nsCSSFrameConstructor::ConstructTableCell) }
|
|
};
|
|
|
|
return FindDataByInt(aDisplay->mDisplay, aElement, aStyleContext,
|
|
sDisplayData, NS_ARRAY_LENGTH(sDisplayData));
|
|
}
|
|
|
|
nsresult
|
|
nsCSSFrameConstructor::ConstructScrollableBlock(nsFrameConstructorState& aState,
|
|
FrameConstructionItem& aItem,
|
|
nsIFrame* aParentFrame,
|
|
const nsStyleDisplay* aDisplay,
|
|
nsFrameItems& aFrameItems,
|
|
nsIFrame** aNewFrame)
|
|
{
|
|
nsIContent* const content = aItem.mContent;
|
|
nsStyleContext* const styleContext = aItem.mStyleContext;
|
|
|
|
*aNewFrame = nsnull;
|
|
nsRefPtr<nsStyleContext> scrolledContentStyle
|
|
= BeginBuildingScrollFrame(aState, content, styleContext,
|
|
aState.GetGeometricParent(aDisplay, aParentFrame),
|
|
nsCSSAnonBoxes::scrolledContent,
|
|
PR_FALSE, *aNewFrame);
|
|
|
|
// Create our block frame
|
|
// pass a temporary stylecontext, the correct one will be set later
|
|
nsIFrame* scrolledFrame =
|
|
NS_NewBlockFormattingContext(mPresShell, styleContext);
|
|
|
|
nsFrameItems blockItem;
|
|
nsresult rv = ConstructBlock(aState,
|
|
scrolledContentStyle->GetStyleDisplay(), content,
|
|
*aNewFrame, *aNewFrame, scrolledContentStyle,
|
|
&scrolledFrame, blockItem, aDisplay->IsPositioned(),
|
|
aItem.mPendingBinding);
|
|
if (NS_UNLIKELY(NS_FAILED(rv))) {
|
|
// XXXbz any cleanup needed here?
|
|
return rv;
|
|
}
|
|
|
|
NS_ASSERTION(blockItem.FirstChild() == scrolledFrame,
|
|
"Scrollframe's frameItems should be exactly the scrolled frame");
|
|
FinishBuildingScrollFrame(*aNewFrame, scrolledFrame);
|
|
|
|
rv = aState.AddChild(*aNewFrame, aFrameItems, content, styleContext,
|
|
aParentFrame);
|
|
return rv;
|
|
}
|
|
|
|
nsresult
|
|
nsCSSFrameConstructor::ConstructNonScrollableBlock(nsFrameConstructorState& aState,
|
|
FrameConstructionItem& aItem,
|
|
nsIFrame* aParentFrame,
|
|
const nsStyleDisplay* aDisplay,
|
|
nsFrameItems& aFrameItems,
|
|
nsIFrame** aNewFrame)
|
|
{
|
|
nsStyleContext* const styleContext = aItem.mStyleContext;
|
|
|
|
// We want a block formatting context root in paginated contexts for
|
|
// every block that would be scrollable in a non-paginated context.
|
|
// We mark our blocks with a bit here if this condition is true, so
|
|
// we can check it later in nsFrame::ApplyPaginatedOverflowClipping.
|
|
PRBool clipPaginatedOverflow =
|
|
(aItem.mFCData->mBits & FCDATA_FORCED_NON_SCROLLABLE_BLOCK) != 0;
|
|
if (aDisplay->IsAbsolutelyPositioned() ||
|
|
aDisplay->IsFloating() ||
|
|
NS_STYLE_DISPLAY_INLINE_BLOCK == aDisplay->mDisplay ||
|
|
clipPaginatedOverflow) {
|
|
*aNewFrame = NS_NewBlockFormattingContext(mPresShell, styleContext);
|
|
if (clipPaginatedOverflow) {
|
|
(*aNewFrame)->AddStateBits(NS_BLOCK_CLIP_PAGINATED_OVERFLOW);
|
|
}
|
|
} else {
|
|
*aNewFrame = NS_NewBlockFrame(mPresShell, styleContext);
|
|
}
|
|
|
|
return ConstructBlock(aState, aDisplay, aItem.mContent,
|
|
aState.GetGeometricParent(aDisplay, aParentFrame),
|
|
aParentFrame, styleContext, aNewFrame,
|
|
aFrameItems, aDisplay->IsPositioned(),
|
|
aItem.mPendingBinding);
|
|
}
|
|
|
|
|
|
nsresult
|
|
nsCSSFrameConstructor::InitAndRestoreFrame(const nsFrameConstructorState& aState,
|
|
nsIContent* aContent,
|
|
nsIFrame* aParentFrame,
|
|
nsIFrame* aPrevInFlow,
|
|
nsIFrame* aNewFrame,
|
|
PRBool aAllowCounters)
|
|
{
|
|
NS_PRECONDITION(mUpdateCount != 0,
|
|
"Should be in an update while creating frames");
|
|
|
|
nsresult rv = NS_OK;
|
|
|
|
NS_ASSERTION(aNewFrame, "Null frame cannot be initialized");
|
|
if (!aNewFrame)
|
|
return NS_ERROR_NULL_POINTER;
|
|
|
|
// Initialize the frame
|
|
rv = aNewFrame->Init(aContent, aParentFrame, aPrevInFlow);
|
|
aNewFrame->AddStateBits(aState.mAdditionalStateBits);
|
|
|
|
if (aState.mFrameState && aState.mFrameManager) {
|
|
// Restore frame state for just the newly created frame.
|
|
aState.mFrameManager->RestoreFrameStateFor(aNewFrame, aState.mFrameState);
|
|
}
|
|
|
|
if (aAllowCounters && !aPrevInFlow &&
|
|
mCounterManager.AddCounterResetsAndIncrements(aNewFrame)) {
|
|
CountersDirty();
|
|
}
|
|
|
|
return rv;
|
|
}
|
|
|
|
already_AddRefed<nsStyleContext>
|
|
nsCSSFrameConstructor::ResolveStyleContext(nsIFrame* aParentFrame,
|
|
nsIContent* aContent,
|
|
nsFrameConstructorState* aState)
|
|
{
|
|
nsStyleContext* parentStyleContext = nsnull;
|
|
NS_ASSERTION(aContent->GetParent(), "Must have parent here");
|
|
|
|
aParentFrame = nsFrame::CorrectStyleParentFrame(aParentFrame, nsnull);
|
|
|
|
if (aParentFrame) {
|
|
// Resolve the style context based on the content object and the parent
|
|
// style context
|
|
parentStyleContext = aParentFrame->GetStyleContext();
|
|
} else {
|
|
// Perhaps aParentFrame is a canvasFrame and we're replicating
|
|
// fixed-pos frames.
|
|
// XXX should we create a way to tell ConstructFrame which style
|
|
// context to use, and pass it the style context for the
|
|
// previous page's fixed-pos frame?
|
|
}
|
|
|
|
return ResolveStyleContext(parentStyleContext, aContent, aState);
|
|
}
|
|
|
|
already_AddRefed<nsStyleContext>
|
|
nsCSSFrameConstructor::ResolveStyleContext(nsStyleContext* aParentStyleContext,
|
|
nsIContent* aContent,
|
|
nsFrameConstructorState* aState)
|
|
{
|
|
nsStyleSet *styleSet = mPresShell->StyleSet();
|
|
|
|
if (aContent->IsElement()) {
|
|
if (aState) {
|
|
return styleSet->ResolveStyleFor(aContent->AsElement(),
|
|
aParentStyleContext,
|
|
aState->mTreeMatchContext);
|
|
}
|
|
return styleSet->ResolveStyleFor(aContent->AsElement(), aParentStyleContext);
|
|
|
|
}
|
|
|
|
NS_ASSERTION(aContent->IsNodeOfType(nsINode::eTEXT),
|
|
"shouldn't waste time creating style contexts for "
|
|
"comments and processing instructions");
|
|
|
|
return styleSet->ResolveStyleForNonElement(aParentStyleContext);
|
|
}
|
|
|
|
// MathML Mod - RBS
|
|
nsresult
|
|
nsCSSFrameConstructor::FlushAccumulatedBlock(nsFrameConstructorState& aState,
|
|
nsIContent* aContent,
|
|
nsIFrame* aParentFrame,
|
|
nsFrameItems* aBlockItems,
|
|
nsFrameItems* aNewItems)
|
|
{
|
|
if (aBlockItems->IsEmpty()) {
|
|
// Nothing to do
|
|
return NS_OK;
|
|
}
|
|
|
|
nsStyleContext* parentContext =
|
|
nsFrame::CorrectStyleParentFrame(aParentFrame,
|
|
nsCSSAnonBoxes::mozMathMLAnonymousBlock)->GetStyleContext();
|
|
nsStyleSet *styleSet = mPresShell->StyleSet();
|
|
nsRefPtr<nsStyleContext> blockContext;
|
|
blockContext = styleSet->
|
|
ResolveAnonymousBoxStyle(nsCSSAnonBoxes::mozMathMLAnonymousBlock,
|
|
parentContext);
|
|
|
|
// then, create a block frame that will wrap the child frames. Make it a
|
|
// MathML frame so that Get(Absolute/Float)ContainingBlockFor know that this
|
|
// is not a suitable block.
|
|
nsIFrame* blockFrame = NS_NewMathMLmathBlockFrame(mPresShell, blockContext,
|
|
NS_BLOCK_FLOAT_MGR | NS_BLOCK_MARGIN_ROOT);
|
|
if (NS_UNLIKELY(!blockFrame))
|
|
return NS_ERROR_OUT_OF_MEMORY;
|
|
|
|
InitAndRestoreFrame(aState, aContent, aParentFrame, nsnull, blockFrame);
|
|
ReparentFrames(aState.mFrameManager, blockFrame, *aBlockItems);
|
|
// abs-pos and floats are disabled in MathML children so we don't have to
|
|
// worry about messing up those.
|
|
blockFrame->SetInitialChildList(nsnull, *aBlockItems);
|
|
NS_ASSERTION(aBlockItems->IsEmpty(), "What happened?");
|
|
aBlockItems->Clear();
|
|
aNewItems->AddChild(blockFrame);
|
|
return NS_OK;
|
|
}
|
|
|
|
// Only <math> elements can be floated or positioned. All other MathML
|
|
// should be in-flow.
|
|
#define SIMPLE_MATHML_CREATE(_tag, _func) \
|
|
{ &nsGkAtoms::_tag, \
|
|
FCDATA_DECL(FCDATA_DISALLOW_OUT_OF_FLOW | \
|
|
FCDATA_FORCE_NULL_ABSPOS_CONTAINER | \
|
|
FCDATA_WRAP_KIDS_IN_BLOCKS, _func) }
|
|
|
|
/* static */
|
|
const nsCSSFrameConstructor::FrameConstructionData*
|
|
nsCSSFrameConstructor::FindMathMLData(Element* aElement,
|
|
nsIAtom* aTag,
|
|
PRInt32 aNameSpaceID,
|
|
nsStyleContext* aStyleContext)
|
|
{
|
|
// Make sure that we remain confined in the MathML world
|
|
if (aNameSpaceID != kNameSpaceID_MathML)
|
|
return nsnull;
|
|
|
|
// Handle <math> specially, because it sometimes produces inlines
|
|
if (aTag == nsGkAtoms::math) {
|
|
// This needs to match the test in EnsureBlockDisplay in
|
|
// nsRuleNode.cpp. Though the behavior here for the display:table
|
|
// case is pretty weird...
|
|
if (aStyleContext->GetStyleDisplay()->IsBlockOutside()) {
|
|
static const FrameConstructionData sBlockMathData =
|
|
FCDATA_DECL(FCDATA_FORCE_NULL_ABSPOS_CONTAINER |
|
|
FCDATA_WRAP_KIDS_IN_BLOCKS,
|
|
NS_CreateNewMathMLmathBlockFrame);
|
|
return &sBlockMathData;
|
|
}
|
|
|
|
static const FrameConstructionData sInlineMathData =
|
|
FCDATA_DECL(FCDATA_FORCE_NULL_ABSPOS_CONTAINER |
|
|
FCDATA_IS_LINE_PARTICIPANT |
|
|
FCDATA_WRAP_KIDS_IN_BLOCKS,
|
|
NS_NewMathMLmathInlineFrame);
|
|
return &sInlineMathData;
|
|
}
|
|
|
|
|
|
static const FrameConstructionDataByTag sMathMLData[] = {
|
|
SIMPLE_MATHML_CREATE(mi_, NS_NewMathMLTokenFrame),
|
|
SIMPLE_MATHML_CREATE(mn_, NS_NewMathMLTokenFrame),
|
|
SIMPLE_MATHML_CREATE(ms_, NS_NewMathMLTokenFrame),
|
|
SIMPLE_MATHML_CREATE(mtext_, NS_NewMathMLTokenFrame),
|
|
SIMPLE_MATHML_CREATE(mo_, NS_NewMathMLmoFrame),
|
|
SIMPLE_MATHML_CREATE(mfrac_, NS_NewMathMLmfracFrame),
|
|
SIMPLE_MATHML_CREATE(msup_, NS_NewMathMLmsupFrame),
|
|
SIMPLE_MATHML_CREATE(msub_, NS_NewMathMLmsubFrame),
|
|
SIMPLE_MATHML_CREATE(msubsup_, NS_NewMathMLmsubsupFrame),
|
|
SIMPLE_MATHML_CREATE(munder_, NS_NewMathMLmunderFrame),
|
|
SIMPLE_MATHML_CREATE(mover_, NS_NewMathMLmoverFrame),
|
|
SIMPLE_MATHML_CREATE(munderover_, NS_NewMathMLmunderoverFrame),
|
|
SIMPLE_MATHML_CREATE(mphantom_, NS_NewMathMLmphantomFrame),
|
|
SIMPLE_MATHML_CREATE(mpadded_, NS_NewMathMLmpaddedFrame),
|
|
SIMPLE_MATHML_CREATE(mspace_, NS_NewMathMLmspaceFrame),
|
|
SIMPLE_MATHML_CREATE(none, NS_NewMathMLmspaceFrame),
|
|
SIMPLE_MATHML_CREATE(mprescripts_, NS_NewMathMLmspaceFrame),
|
|
SIMPLE_MATHML_CREATE(mfenced_, NS_NewMathMLmfencedFrame),
|
|
SIMPLE_MATHML_CREATE(mmultiscripts_, NS_NewMathMLmmultiscriptsFrame),
|
|
SIMPLE_MATHML_CREATE(mstyle_, NS_NewMathMLmstyleFrame),
|
|
SIMPLE_MATHML_CREATE(msqrt_, NS_NewMathMLmsqrtFrame),
|
|
SIMPLE_MATHML_CREATE(mroot_, NS_NewMathMLmrootFrame),
|
|
SIMPLE_MATHML_CREATE(maction_, NS_NewMathMLmactionFrame),
|
|
SIMPLE_MATHML_CREATE(mrow_, NS_NewMathMLmrowFrame),
|
|
SIMPLE_MATHML_CREATE(merror_, NS_NewMathMLmrowFrame),
|
|
SIMPLE_MATHML_CREATE(menclose_, NS_NewMathMLmencloseFrame),
|
|
SIMPLE_MATHML_CREATE(semantics_, NS_NewMathMLsemanticsFrame)
|
|
};
|
|
|
|
return FindDataByTag(aTag, aElement, aStyleContext, sMathMLData,
|
|
NS_ARRAY_LENGTH(sMathMLData));
|
|
}
|
|
|
|
// Only outer <svg> elements can be floated or positioned. All other SVG
|
|
// should be in-flow.
|
|
#define SIMPLE_SVG_FCDATA(_func) \
|
|
FCDATA_DECL(FCDATA_DISALLOW_OUT_OF_FLOW | \
|
|
FCDATA_SKIP_ABSPOS_PUSH | \
|
|
FCDATA_DISALLOW_GENERATED_CONTENT, _func)
|
|
#define SIMPLE_SVG_CREATE(_tag, _func) \
|
|
{ &nsGkAtoms::_tag, SIMPLE_SVG_FCDATA(_func) }
|
|
|
|
/* static */
|
|
const nsCSSFrameConstructor::FrameConstructionData*
|
|
nsCSSFrameConstructor::FindSVGData(Element* aElement,
|
|
nsIAtom* aTag,
|
|
PRInt32 aNameSpaceID,
|
|
nsIFrame* aParentFrame,
|
|
nsStyleContext* aStyleContext)
|
|
{
|
|
if (aNameSpaceID != kNameSpaceID_SVG) {
|
|
return nsnull;
|
|
}
|
|
|
|
static const FrameConstructionData sSuppressData = SUPPRESS_FCDATA();
|
|
static const FrameConstructionData sContainerData =
|
|
SIMPLE_SVG_FCDATA(NS_NewSVGContainerFrame);
|
|
|
|
PRBool parentIsSVG = PR_FALSE;
|
|
nsIContent* parentContent =
|
|
aParentFrame ? aParentFrame->GetContent() : nsnull;
|
|
// XXXbz should this really be based on the XBL-resolved tag of the parent
|
|
// frame's content? Should it not be based on the type of the parent frame
|
|
// (e.g. whether it's an SVG frame)?
|
|
if (parentContent) {
|
|
PRInt32 parentNSID;
|
|
nsIAtom* parentTag =
|
|
parentContent->GetOwnerDoc()->BindingManager()->
|
|
ResolveTag(aParentFrame->GetContent(), &parentNSID);
|
|
|
|
// It's not clear whether the SVG spec intends to allow any SVG
|
|
// content within svg:foreignObject at all (SVG 1.1, section
|
|
// 23.2), but if it does, it better be svg:svg. So given that
|
|
// we're allowing it, treat it as a non-SVG parent.
|
|
parentIsSVG = parentNSID == kNameSpaceID_SVG &&
|
|
parentTag != nsGkAtoms::foreignObject;
|
|
}
|
|
|
|
if ((aTag != nsGkAtoms::svg && !parentIsSVG) ||
|
|
(aTag == nsGkAtoms::desc || aTag == nsGkAtoms::title ||
|
|
aTag == nsGkAtoms::feFuncR || aTag == nsGkAtoms::feFuncG ||
|
|
aTag == nsGkAtoms::feFuncB || aTag == nsGkAtoms::feFuncA ||
|
|
aTag == nsGkAtoms::feDistantLight || aTag == nsGkAtoms::fePointLight ||
|
|
aTag == nsGkAtoms::feSpotLight)) {
|
|
// Sections 5.1 and G.4 of SVG 1.1 say that SVG elements other than
|
|
// svg:svg not contained within svg:svg are incorrect, although they
|
|
// don't seem to specify error handling. Ignore them, since many of
|
|
// our frame classes can't deal. It *may* be that the document
|
|
// should at that point be considered in error according to F.2, but
|
|
// it's hard to tell.
|
|
//
|
|
// Style mutation can't change this situation, so don't bother
|
|
// adding to the undisplayed content map.
|
|
//
|
|
// We don't currently handle any UI for desc/title
|
|
//
|
|
// The filter types are children of filter elements that use their
|
|
// parent frames when necessary
|
|
return &sSuppressData;
|
|
}
|
|
|
|
// We don't need frames for animation elements
|
|
if (aElement->IsNodeOfType(nsINode::eANIMATION)) {
|
|
return &sSuppressData;
|
|
}
|
|
|
|
if (aTag == nsGkAtoms::svg && !parentIsSVG) {
|
|
// We need outer <svg> elements to have an nsSVGOuterSVGFrame regardless
|
|
// of whether they fail conditional processing attributes, since various
|
|
// SVG frames assume that one exists. We handle the non-rendering
|
|
// of failing outer <svg> element contents like <switch> statements,
|
|
// and do the PassesConditionalProcessingTests call in
|
|
// nsSVGOuterSVGFrame::Init.
|
|
static const FrameConstructionData sOuterSVGData =
|
|
FCDATA_DECL(FCDATA_SKIP_ABSPOS_PUSH | FCDATA_DISALLOW_GENERATED_CONTENT,
|
|
NS_NewSVGOuterSVGFrame);
|
|
return &sOuterSVGData;
|
|
}
|
|
|
|
if (!nsSVGFeatures::PassesConditionalProcessingTests(aElement)) {
|
|
// Elements with failing conditional processing attributes never get
|
|
// rendered. Note that this is not where we select which frame in a
|
|
// <switch> to render! That happens in nsSVGSwitchFrame::PaintSVG.
|
|
return &sContainerData;
|
|
}
|
|
|
|
// Special cases for text/tspan/textPath, because the kind of frame
|
|
// they get depends on the parent frame. We ignore 'a' elements when
|
|
// determining the parent, however.
|
|
nsIFrame *ancestorFrame =
|
|
nsSVGUtils::GetFirstNonAAncestorFrame(aParentFrame);
|
|
if (ancestorFrame) {
|
|
if (aTag == nsGkAtoms::tspan || aTag == nsGkAtoms::altGlyph) {
|
|
// tspan and altGlyph must be children of another text content element.
|
|
nsSVGTextContainerFrame* metrics = do_QueryFrame(ancestorFrame);
|
|
if (!metrics) {
|
|
return &sSuppressData;
|
|
}
|
|
} else if (aTag == nsGkAtoms::textPath) {
|
|
// textPath must be a child of text.
|
|
nsIAtom* ancestorFrameType = ancestorFrame->GetType();
|
|
if (ancestorFrameType != nsGkAtoms::svgTextFrame) {
|
|
return &sSuppressData;
|
|
}
|
|
} else if (aTag != nsGkAtoms::a) {
|
|
// Every other element except 'a' must not be a child of a text content
|
|
// element.
|
|
nsSVGTextContainerFrame* metrics = do_QueryFrame(ancestorFrame);
|
|
if (metrics) {
|
|
return &sSuppressData;
|
|
}
|
|
}
|
|
}
|
|
|
|
static const FrameConstructionDataByTag sSVGData[] = {
|
|
SIMPLE_SVG_CREATE(svg, NS_NewSVGInnerSVGFrame),
|
|
SIMPLE_SVG_CREATE(g, NS_NewSVGGFrame),
|
|
SIMPLE_SVG_CREATE(svgSwitch, NS_NewSVGSwitchFrame),
|
|
SIMPLE_SVG_CREATE(polygon, NS_NewSVGPathGeometryFrame),
|
|
SIMPLE_SVG_CREATE(polyline, NS_NewSVGPathGeometryFrame),
|
|
SIMPLE_SVG_CREATE(circle, NS_NewSVGPathGeometryFrame),
|
|
SIMPLE_SVG_CREATE(ellipse, NS_NewSVGPathGeometryFrame),
|
|
SIMPLE_SVG_CREATE(line, NS_NewSVGPathGeometryFrame),
|
|
SIMPLE_SVG_CREATE(rect, NS_NewSVGPathGeometryFrame),
|
|
SIMPLE_SVG_CREATE(path, NS_NewSVGPathGeometryFrame),
|
|
SIMPLE_SVG_CREATE(defs, NS_NewSVGContainerFrame),
|
|
SIMPLE_SVG_CREATE(generic, NS_NewSVGGenericContainerFrame),
|
|
{ &nsGkAtoms::foreignObject,
|
|
FULL_CTOR_FCDATA(FCDATA_DISALLOW_OUT_OF_FLOW,
|
|
&nsCSSFrameConstructor::ConstructSVGForeignObjectFrame) },
|
|
SIMPLE_SVG_CREATE(a, NS_NewSVGAFrame),
|
|
SIMPLE_SVG_CREATE(altGlyph, NS_NewSVGTSpanFrame),
|
|
SIMPLE_SVG_CREATE(text, NS_NewSVGTextFrame),
|
|
SIMPLE_SVG_CREATE(tspan, NS_NewSVGTSpanFrame),
|
|
SIMPLE_SVG_CREATE(linearGradient, NS_NewSVGLinearGradientFrame),
|
|
SIMPLE_SVG_CREATE(radialGradient, NS_NewSVGRadialGradientFrame),
|
|
SIMPLE_SVG_CREATE(stop, NS_NewSVGStopFrame),
|
|
SIMPLE_SVG_CREATE(use, NS_NewSVGUseFrame),
|
|
SIMPLE_SVG_CREATE(marker, NS_NewSVGMarkerFrame),
|
|
SIMPLE_SVG_CREATE(image, NS_NewSVGImageFrame),
|
|
SIMPLE_SVG_CREATE(clipPath, NS_NewSVGClipPathFrame),
|
|
SIMPLE_SVG_CREATE(textPath, NS_NewSVGTextPathFrame),
|
|
SIMPLE_SVG_CREATE(filter, NS_NewSVGFilterFrame),
|
|
SIMPLE_SVG_CREATE(pattern, NS_NewSVGPatternFrame),
|
|
SIMPLE_SVG_CREATE(mask, NS_NewSVGMaskFrame),
|
|
SIMPLE_SVG_CREATE(feBlend, NS_NewSVGLeafFrame),
|
|
SIMPLE_SVG_CREATE(feColorMatrix, NS_NewSVGLeafFrame),
|
|
SIMPLE_SVG_CREATE(feComposite, NS_NewSVGLeafFrame),
|
|
SIMPLE_SVG_CREATE(feComponentTransfer, NS_NewSVGLeafFrame),
|
|
SIMPLE_SVG_CREATE(feConvolveMatrix, NS_NewSVGLeafFrame),
|
|
SIMPLE_SVG_CREATE(feDiffuseLighting, NS_NewSVGLeafFrame),
|
|
SIMPLE_SVG_CREATE(feDisplacementMap, NS_NewSVGLeafFrame),
|
|
SIMPLE_SVG_CREATE(feFlood, NS_NewSVGLeafFrame),
|
|
SIMPLE_SVG_CREATE(feGaussianBlur, NS_NewSVGLeafFrame),
|
|
SIMPLE_SVG_CREATE(feImage, NS_NewSVGLeafFrame),
|
|
SIMPLE_SVG_CREATE(feMergeNode, NS_NewSVGLeafFrame),
|
|
SIMPLE_SVG_CREATE(feMorphology, NS_NewSVGLeafFrame),
|
|
SIMPLE_SVG_CREATE(feOffset, NS_NewSVGLeafFrame),
|
|
SIMPLE_SVG_CREATE(feSpecularLighting, NS_NewSVGLeafFrame),
|
|
SIMPLE_SVG_CREATE(feTile, NS_NewSVGLeafFrame),
|
|
SIMPLE_SVG_CREATE(feTurbulence, NS_NewSVGLeafFrame)
|
|
};
|
|
|
|
const FrameConstructionData* data =
|
|
FindDataByTag(aTag, aElement, aStyleContext, sSVGData,
|
|
NS_ARRAY_LENGTH(sSVGData));
|
|
|
|
if (!data) {
|
|
data = &sContainerData;
|
|
}
|
|
|
|
return data;
|
|
}
|
|
|
|
nsresult
|
|
nsCSSFrameConstructor::ConstructSVGForeignObjectFrame(nsFrameConstructorState& aState,
|
|
FrameConstructionItem& aItem,
|
|
nsIFrame* aParentFrame,
|
|
const nsStyleDisplay* aStyleDisplay,
|
|
nsFrameItems& aFrameItems,
|
|
nsIFrame** aNewFrame)
|
|
{
|
|
nsIContent* const content = aItem.mContent;
|
|
nsStyleContext* const styleContext = aItem.mStyleContext;
|
|
|
|
nsIFrame* newFrame = NS_NewSVGForeignObjectFrame(mPresShell, styleContext);
|
|
if (NS_UNLIKELY(!newFrame)) {
|
|
return NS_ERROR_OUT_OF_MEMORY;
|
|
}
|
|
|
|
// We don't allow this frame to be out of flow
|
|
InitAndRestoreFrame(aState, content, aParentFrame, nsnull, newFrame);
|
|
|
|
nsresult rv = aState.AddChild(newFrame, aFrameItems, content, styleContext,
|
|
aParentFrame, PR_FALSE, PR_FALSE);
|
|
if (NS_FAILED(rv)) {
|
|
return rv;
|
|
}
|
|
|
|
nsRefPtr<nsStyleContext> innerPseudoStyle;
|
|
innerPseudoStyle = mPresShell->StyleSet()->
|
|
ResolveAnonymousBoxStyle(nsCSSAnonBoxes::mozSVGForeignContent, styleContext);
|
|
|
|
nsIFrame* blockFrame = NS_NewBlockFrame(mPresShell, innerPseudoStyle,
|
|
NS_BLOCK_FLOAT_MGR |
|
|
NS_BLOCK_MARGIN_ROOT);
|
|
if (NS_UNLIKELY(!blockFrame)) {
|
|
newFrame->Destroy();
|
|
return NS_ERROR_OUT_OF_MEMORY;
|
|
}
|
|
|
|
nsFrameItems childItems;
|
|
// Claim to be relatively positioned so that we end up being the
|
|
// absolute containing block.
|
|
rv = ConstructBlock(aState, innerPseudoStyle->GetStyleDisplay(), content,
|
|
newFrame, newFrame, innerPseudoStyle,
|
|
&blockFrame, childItems, PR_TRUE,
|
|
aItem.mPendingBinding);
|
|
|
|
newFrame->SetInitialChildList(nsnull, childItems);
|
|
|
|
*aNewFrame = newFrame;
|
|
|
|
return rv;
|
|
}
|
|
|
|
void
|
|
nsCSSFrameConstructor::AddPageBreakItem(nsIContent* aContent,
|
|
nsStyleContext* aMainStyleContext,
|
|
FrameConstructionItemList& aItems)
|
|
{
|
|
nsRefPtr<nsStyleContext> pseudoStyle;
|
|
// Use the same parent style context that |aMainStyleContext| has, since
|
|
// that's easier to re-resolve and it doesn't matter in practice.
|
|
// (Getting different parents can result in framechange hints, e.g.,
|
|
// for user-modify.)
|
|
pseudoStyle =
|
|
mPresShell->StyleSet()->
|
|
ResolveAnonymousBoxStyle(nsCSSAnonBoxes::pageBreak,
|
|
aMainStyleContext->GetParent());
|
|
|
|
NS_ASSERTION(pseudoStyle->GetStyleDisplay()->mDisplay ==
|
|
NS_STYLE_DISPLAY_BLOCK, "Unexpected display");
|
|
|
|
static const FrameConstructionData sPageBreakData =
|
|
FCDATA_DECL(FCDATA_SKIP_FRAMESET, NS_NewPageBreakFrame);
|
|
|
|
// Lie about the tag and namespace so we don't trigger anything
|
|
// interesting during frame construction.
|
|
aItems.AppendItem(&sPageBreakData, aContent, nsCSSAnonBoxes::pageBreak,
|
|
kNameSpaceID_None, nsnull, pseudoStyle.forget(), PR_TRUE);
|
|
}
|
|
|
|
nsresult
|
|
nsCSSFrameConstructor::ConstructFrame(nsFrameConstructorState& aState,
|
|
nsIContent* aContent,
|
|
nsIFrame* aParentFrame,
|
|
nsFrameItems& aFrameItems)
|
|
|
|
{
|
|
NS_PRECONDITION(nsnull != aParentFrame, "no parent frame");
|
|
FrameConstructionItemList items;
|
|
AddFrameConstructionItems(aState, aContent, PR_TRUE, aParentFrame, items);
|
|
|
|
for (FCItemIterator iter(items); !iter.IsDone(); iter.Next()) {
|
|
NS_ASSERTION(iter.item().DesiredParentType() == GetParentType(aParentFrame),
|
|
"This is not going to work");
|
|
nsresult rv =
|
|
ConstructFramesFromItem(aState, iter, aParentFrame, aFrameItems);
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
}
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
void
|
|
nsCSSFrameConstructor::AddFrameConstructionItems(nsFrameConstructorState& aState,
|
|
nsIContent* aContent,
|
|
PRBool aSuppressWhiteSpaceOptimizations,
|
|
nsIFrame* aParentFrame,
|
|
FrameConstructionItemList& aItems)
|
|
{
|
|
aContent->UnsetFlags(NODE_DESCENDANTS_NEED_FRAMES | NODE_NEEDS_FRAME);
|
|
if (aContent->IsElement()) {
|
|
// We can't just remove our pending restyle flags, since we may
|
|
// have restyle-later-siblings set on us. But we _can_ remove the
|
|
// "is possible restyle root" flags, and need to. Otherwise we can
|
|
// end up with stale such flags (e.g. if we used to have a
|
|
// display:none parent when our last restyle was posted and
|
|
// processed and now no longer do).
|
|
aContent->UnsetFlags(ELEMENT_ALL_RESTYLE_FLAGS &
|
|
~ELEMENT_PENDING_RESTYLE_FLAGS);
|
|
}
|
|
|
|
// XXX the GetContent() != aContent check is needed due to bug 135040.
|
|
// Remove it once that's fixed.
|
|
if (aContent->GetPrimaryFrame() &&
|
|
aContent->GetPrimaryFrame()->GetContent() == aContent &&
|
|
!aState.mCreatingExtraFrames) {
|
|
NS_ERROR("asked to create frame construction item for a node that already "
|
|
"has a frame");
|
|
return;
|
|
}
|
|
|
|
// don't create a whitespace frame if aParent doesn't want it
|
|
if (!NeedFrameFor(aState, aParentFrame, aContent)) {
|
|
return;
|
|
}
|
|
|
|
// never create frames for comments or PIs
|
|
if (aContent->IsNodeOfType(nsINode::eCOMMENT) ||
|
|
aContent->IsNodeOfType(nsINode::ePROCESSING_INSTRUCTION))
|
|
return;
|
|
|
|
nsRefPtr<nsStyleContext> styleContext;
|
|
styleContext = ResolveStyleContext(aParentFrame, aContent, &aState);
|
|
|
|
AddFrameConstructionItemsInternal(aState, aContent, aParentFrame,
|
|
aContent->Tag(), aContent->GetNameSpaceID(),
|
|
aSuppressWhiteSpaceOptimizations,
|
|
styleContext,
|
|
ITEM_ALLOW_XBL_BASE | ITEM_ALLOW_PAGE_BREAK,
|
|
aItems);
|
|
}
|
|
|
|
/**
|
|
* Set aContent as undisplayed content with style context aStyleContext. This
|
|
* method enforces the invariant that all style contexts in the undisplayed
|
|
* content map must be non-pseudo contexts and also handles unbinding
|
|
* undisplayed generated content as needed.
|
|
*/
|
|
static void
|
|
SetAsUndisplayedContent(nsFrameManager* aFrameManager, nsIContent* aContent,
|
|
nsStyleContext* aStyleContext,
|
|
PRBool aIsGeneratedContent)
|
|
{
|
|
if (aStyleContext->GetPseudo()) {
|
|
if (aIsGeneratedContent) {
|
|
aContent->UnbindFromTree();
|
|
}
|
|
return;
|
|
}
|
|
|
|
NS_ASSERTION(!aIsGeneratedContent, "Should have had pseudo type");
|
|
aFrameManager->SetUndisplayedContent(aContent, aStyleContext);
|
|
}
|
|
|
|
void
|
|
nsCSSFrameConstructor::AddFrameConstructionItemsInternal(nsFrameConstructorState& aState,
|
|
nsIContent* aContent,
|
|
nsIFrame* aParentFrame,
|
|
nsIAtom* aTag,
|
|
PRInt32 aNameSpaceID,
|
|
PRBool aSuppressWhiteSpaceOptimizations,
|
|
nsStyleContext* aStyleContext,
|
|
PRUint32 aFlags,
|
|
FrameConstructionItemList& aItems)
|
|
{
|
|
NS_PRECONDITION(aContent->IsNodeOfType(nsINode::eTEXT) ||
|
|
aContent->IsElement(),
|
|
"Shouldn't get anything else here!");
|
|
|
|
// The following code allows the user to specify the base tag
|
|
// of an element using XBL. XUL and HTML objects (like boxes, menus, etc.)
|
|
// can then be extended arbitrarily.
|
|
const nsStyleDisplay* display = aStyleContext->GetStyleDisplay();
|
|
nsRefPtr<nsStyleContext> styleContext(aStyleContext);
|
|
PendingBinding* pendingBinding = nsnull;
|
|
if ((aFlags & ITEM_ALLOW_XBL_BASE) && display->mBinding)
|
|
{
|
|
// Ensure that our XBL bindings are installed.
|
|
|
|
nsIXBLService * xblService = GetXBLService();
|
|
if (!xblService)
|
|
return;
|
|
|
|
PRBool resolveStyle;
|
|
|
|
nsAutoPtr<PendingBinding> newPendingBinding(new PendingBinding());
|
|
|
|
nsresult rv = xblService->LoadBindings(aContent, display->mBinding->GetURI(),
|
|
display->mBinding->mOriginPrincipal,
|
|
PR_FALSE,
|
|
getter_AddRefs(newPendingBinding->mBinding),
|
|
&resolveStyle);
|
|
if (NS_FAILED(rv) && rv != NS_ERROR_XBL_BLOCKED)
|
|
return;
|
|
|
|
if (newPendingBinding->mBinding) {
|
|
pendingBinding = newPendingBinding;
|
|
// aState takes over owning newPendingBinding
|
|
aState.AddPendingBinding(newPendingBinding.forget());
|
|
}
|
|
|
|
if (resolveStyle) {
|
|
styleContext =
|
|
ResolveStyleContext(styleContext->GetParent(), aContent, &aState);
|
|
display = styleContext->GetStyleDisplay();
|
|
aStyleContext = styleContext;
|
|
}
|
|
|
|
aTag = mDocument->BindingManager()->ResolveTag(aContent, &aNameSpaceID);
|
|
}
|
|
|
|
PRBool isGeneratedContent = ((aFlags & ITEM_IS_GENERATED_CONTENT) != 0);
|
|
|
|
// Pre-check for display "none" - if we find that, don't create
|
|
// any frame at all
|
|
if (NS_STYLE_DISPLAY_NONE == display->mDisplay) {
|
|
SetAsUndisplayedContent(aState.mFrameManager, aContent, styleContext,
|
|
isGeneratedContent);
|
|
return;
|
|
}
|
|
|
|
PRBool isText = !aContent->IsElement();
|
|
|
|
// never create frames for non-option/optgroup kids of <select> and
|
|
// non-option kids of <optgroup> inside a <select>.
|
|
// XXXbz it's not clear how this should best work with XBL.
|
|
nsIContent *parent = aContent->GetParent();
|
|
if (parent) {
|
|
// Check tag first, since that check will usually fail
|
|
nsIAtom* parentTag = parent->Tag();
|
|
if ((parentTag == nsGkAtoms::select || parentTag == nsGkAtoms::optgroup) &&
|
|
parent->IsHTML() &&
|
|
// <option> is ok no matter what
|
|
!aContent->IsHTML(nsGkAtoms::option) &&
|
|
// <optgroup> is OK in <select> but not in <optgroup>
|
|
(!aContent->IsHTML(nsGkAtoms::optgroup) ||
|
|
parentTag != nsGkAtoms::select) &&
|
|
// Allow native anonymous content no matter what
|
|
!aContent->IsRootOfNativeAnonymousSubtree()) {
|
|
// No frame for aContent
|
|
if (!isText) {
|
|
SetAsUndisplayedContent(aState.mFrameManager, aContent, styleContext,
|
|
isGeneratedContent);
|
|
}
|
|
return;
|
|
}
|
|
}
|
|
|
|
PRBool isPopup = PR_FALSE;
|
|
// Try to find frame construction data for this content
|
|
const FrameConstructionData* data;
|
|
if (isText) {
|
|
data = FindTextData(aParentFrame);
|
|
if (!data) {
|
|
// Nothing to do here; suppressed text inside SVG
|
|
return;
|
|
}
|
|
} else {
|
|
Element* element = aContent->AsElement();
|
|
|
|
// Don't create frames for non-SVG element children of SVG elements.
|
|
if (aNameSpaceID != kNameSpaceID_SVG &&
|
|
aParentFrame &&
|
|
aParentFrame->IsFrameOfType(nsIFrame::eSVG) &&
|
|
!aParentFrame->IsFrameOfType(nsIFrame::eSVGForeignObject)
|
|
) {
|
|
SetAsUndisplayedContent(aState.mFrameManager, element, styleContext,
|
|
isGeneratedContent);
|
|
return;
|
|
}
|
|
|
|
data = FindHTMLData(element, aTag, aNameSpaceID, aParentFrame,
|
|
styleContext);
|
|
if (!data) {
|
|
data = FindXULTagData(element, aTag, aNameSpaceID, styleContext);
|
|
}
|
|
if (!data) {
|
|
data = FindMathMLData(element, aTag, aNameSpaceID, styleContext);
|
|
}
|
|
if (!data) {
|
|
data = FindSVGData(element, aTag, aNameSpaceID, aParentFrame,
|
|
styleContext);
|
|
}
|
|
|
|
// Now check for XUL display types
|
|
if (!data) {
|
|
data = FindXULDisplayData(display, element, styleContext);
|
|
}
|
|
|
|
// And general display types
|
|
if (!data) {
|
|
data = FindDisplayData(display, element, styleContext);
|
|
}
|
|
|
|
NS_ASSERTION(data, "Should have frame construction data now");
|
|
|
|
if (data->mBits & FCDATA_SUPPRESS_FRAME) {
|
|
SetAsUndisplayedContent(aState.mFrameManager, element, styleContext,
|
|
isGeneratedContent);
|
|
return;
|
|
}
|
|
|
|
#ifdef MOZ_XUL
|
|
if ((data->mBits & FCDATA_IS_POPUP) &&
|
|
(!aParentFrame || // Parent is inline
|
|
aParentFrame->GetType() != nsGkAtoms::menuFrame)) {
|
|
if (!aState.mPopupItems.containingBlock &&
|
|
!aState.mHavePendingPopupgroup) {
|
|
SetAsUndisplayedContent(aState.mFrameManager, element, styleContext,
|
|
isGeneratedContent);
|
|
return;
|
|
}
|
|
|
|
isPopup = PR_TRUE;
|
|
}
|
|
#endif /* MOZ_XUL */
|
|
}
|
|
|
|
PRUint32 bits = data->mBits;
|
|
|
|
// Inside colgroups, suppress everything except columns.
|
|
if (aParentFrame &&
|
|
aParentFrame->GetType() == nsGkAtoms::tableColGroupFrame &&
|
|
(!(bits & FCDATA_IS_TABLE_PART) ||
|
|
display->mDisplay != NS_STYLE_DISPLAY_TABLE_COLUMN)) {
|
|
SetAsUndisplayedContent(aState.mFrameManager, aContent, styleContext,
|
|
isGeneratedContent);
|
|
return;
|
|
}
|
|
|
|
PRBool canHavePageBreak =
|
|
(aFlags & ITEM_ALLOW_PAGE_BREAK) &&
|
|
aState.mPresContext->IsPaginated() &&
|
|
!display->IsAbsolutelyPositioned() &&
|
|
!(bits & FCDATA_IS_TABLE_PART);
|
|
|
|
if (canHavePageBreak && display->mBreakBefore) {
|
|
AddPageBreakItem(aContent, aStyleContext, aItems);
|
|
}
|
|
|
|
FrameConstructionItem* item =
|
|
aItems.AppendItem(data, aContent, aTag, aNameSpaceID,
|
|
pendingBinding, styleContext.forget(),
|
|
aSuppressWhiteSpaceOptimizations);
|
|
if (!item) {
|
|
if (isGeneratedContent) {
|
|
aContent->UnbindFromTree();
|
|
}
|
|
return;
|
|
}
|
|
|
|
item->mIsText = isText;
|
|
item->mIsGeneratedContent = isGeneratedContent;
|
|
if (isGeneratedContent) {
|
|
NS_ADDREF(item->mContent);
|
|
}
|
|
item->mIsRootPopupgroup =
|
|
aNameSpaceID == kNameSpaceID_XUL && aTag == nsGkAtoms::popupgroup &&
|
|
aContent->IsRootOfNativeAnonymousSubtree();
|
|
if (item->mIsRootPopupgroup) {
|
|
aState.mHavePendingPopupgroup = PR_TRUE;
|
|
}
|
|
item->mIsPopup = isPopup;
|
|
|
|
if (canHavePageBreak && display->mBreakAfter) {
|
|
AddPageBreakItem(aContent, aStyleContext, aItems);
|
|
}
|
|
|
|
if (bits & FCDATA_IS_INLINE) {
|
|
// To correctly set item->mIsAllInline we need to build up our child items
|
|
// right now.
|
|
BuildInlineChildItems(aState, *item);
|
|
item->mHasInlineEnds = PR_TRUE;
|
|
item->mIsBlock = PR_FALSE;
|
|
} else {
|
|
// Compute a boolean isInline which is guaranteed to be false for blocks
|
|
// (but may also be false for some inlines).
|
|
PRBool isInline =
|
|
// Table-internal things are inline-outside if and only if they're kids of
|
|
// inlines, since they'll trigger construction of inline-table
|
|
// pseudos.
|
|
((bits & FCDATA_IS_TABLE_PART) &&
|
|
(!aParentFrame || // No aParentFrame means inline
|
|
aParentFrame->GetStyleDisplay()->mDisplay == NS_STYLE_DISPLAY_INLINE)) ||
|
|
// Things that are inline-outside but aren't inline frames are inline
|
|
display->IsInlineOutside() ||
|
|
// Popups that are certainly out of flow.
|
|
isPopup;
|
|
|
|
// Set mIsAllInline conservatively. It just might be that even an inline
|
|
// that has mIsAllInline false doesn't need an {ib} split. So this is just
|
|
// an optimization to keep from doing too much work in cases when we can
|
|
// show that mIsAllInline is true..
|
|
item->mIsAllInline = item->mHasInlineEnds = isInline ||
|
|
// Figure out whether we're guaranteed this item will be out of flow.
|
|
// This is not a precise test, since one of our ancestor inlines might add
|
|
// an absolute containing block (if it's relatively positioned) when there
|
|
// wasn't such a containing block before. But it's conservative in the
|
|
// sense that anything that will really end up as an in-flow non-inline
|
|
// will test false here. In other words, if this test is true we're
|
|
// guaranteed to be inline; if it's false we don't know what we'll end up
|
|
// as.
|
|
//
|
|
// If we make this test precise, we can remove some of the code dealing
|
|
// with the imprecision in ConstructInline and adjust the comments on
|
|
// mIsAllInline and mIsBlock in the header. And probably remove mIsBlock
|
|
// altogether, since then it will always be equal to !mHasInlineEnds.
|
|
(!(bits & FCDATA_DISALLOW_OUT_OF_FLOW) &&
|
|
aState.GetGeometricParent(display, nsnull));
|
|
|
|
// Set mIsBlock conservatively. It's OK to set it false for some real
|
|
// blocks, but not OK to set it true for things that aren't blocks. Since
|
|
// isOutOfFlow might be false even in cases when the frame will end up
|
|
// out-of-flow, we can't use it here. But we _can_ say that the frame will
|
|
// for sure end up in-flow if it's not floated or absolutely positioned.
|
|
item->mIsBlock =
|
|
!isInline && !display->IsAbsolutelyPositioned() && !display->IsFloating();
|
|
}
|
|
|
|
if (item->mIsAllInline) {
|
|
aItems.InlineItemAdded();
|
|
} else if (item->mIsBlock) {
|
|
aItems.BlockItemAdded();
|
|
}
|
|
|
|
// Our item should be treated as a line participant if we have the relevant
|
|
// bit and are going to be in-flow. Note that this really only matters if
|
|
// our ancestor is a box or some such, so the fact that we might have an
|
|
// inline ancestor that might become a containing block is not relevant here.
|
|
if ((bits & FCDATA_IS_LINE_PARTICIPANT) &&
|
|
((bits & FCDATA_DISALLOW_OUT_OF_FLOW) ||
|
|
!aState.GetGeometricParent(display, nsnull))) {
|
|
item->mIsLineParticipant = PR_TRUE;
|
|
aItems.LineParticipantItemAdded();
|
|
}
|
|
}
|
|
|
|
static void
|
|
DestroyContent(void* aPropertyValue)
|
|
{
|
|
nsIContent* content = static_cast<nsIContent*>(aPropertyValue);
|
|
content->UnbindFromTree();
|
|
NS_RELEASE(content);
|
|
}
|
|
|
|
NS_DECLARE_FRAME_PROPERTY(BeforeProperty, DestroyContent)
|
|
NS_DECLARE_FRAME_PROPERTY(AfterProperty, DestroyContent)
|
|
|
|
static const FramePropertyDescriptor*
|
|
GenConPseudoToProperty(nsIAtom* aPseudo)
|
|
{
|
|
NS_ASSERTION(aPseudo == nsCSSPseudoElements::before ||
|
|
aPseudo == nsCSSPseudoElements::after,
|
|
"Bad gen-con pseudo");
|
|
return aPseudo == nsCSSPseudoElements::before ? BeforeProperty()
|
|
: AfterProperty();
|
|
}
|
|
|
|
/**
|
|
* Return true if the frame construction item pointed to by aIter will
|
|
* create a frame adjacent to a line boundary in the frame tree, and that
|
|
* line boundary is induced by a content node adjacent to the frame's
|
|
* content node in the content tree. The latter condition is necessary so
|
|
* that ContentAppended/ContentInserted/ContentRemoved can easily find any
|
|
* text nodes that were suppressed here.
|
|
*/
|
|
PRBool
|
|
nsCSSFrameConstructor::AtLineBoundary(FCItemIterator& aIter)
|
|
{
|
|
if (aIter.item().mSuppressWhiteSpaceOptimizations) {
|
|
return PR_FALSE;
|
|
}
|
|
|
|
if (aIter.AtStart()) {
|
|
if (aIter.List()->HasLineBoundaryAtStart() &&
|
|
!aIter.item().mContent->GetPreviousSibling())
|
|
return PR_TRUE;
|
|
} else {
|
|
FCItemIterator prev = aIter;
|
|
prev.Prev();
|
|
if (prev.item().IsLineBoundary() &&
|
|
!prev.item().mSuppressWhiteSpaceOptimizations &&
|
|
aIter.item().mContent->GetPreviousSibling() == prev.item().mContent)
|
|
return PR_TRUE;
|
|
}
|
|
|
|
FCItemIterator next = aIter;
|
|
next.Next();
|
|
if (next.IsDone()) {
|
|
if (aIter.List()->HasLineBoundaryAtEnd() &&
|
|
!aIter.item().mContent->GetNextSibling())
|
|
return PR_TRUE;
|
|
} else {
|
|
if (next.item().IsLineBoundary() &&
|
|
!next.item().mSuppressWhiteSpaceOptimizations &&
|
|
aIter.item().mContent->GetNextSibling() == next.item().mContent)
|
|
return PR_TRUE;
|
|
}
|
|
|
|
return PR_FALSE;
|
|
}
|
|
|
|
nsresult
|
|
nsCSSFrameConstructor::ConstructFramesFromItem(nsFrameConstructorState& aState,
|
|
FCItemIterator& aIter,
|
|
nsIFrame* aParentFrame,
|
|
nsFrameItems& aFrameItems)
|
|
{
|
|
nsIFrame* adjParentFrame = aParentFrame;
|
|
FrameConstructionItem& item = aIter.item();
|
|
nsStyleContext* styleContext = item.mStyleContext;
|
|
AdjustParentFrame(adjParentFrame, item.mFCData, styleContext);
|
|
|
|
if (item.mIsText) {
|
|
// If this is collapsible whitespace next to a line boundary,
|
|
// don't create a frame. item.IsWhitespace() also sets the
|
|
// NS_CREATE_FRAME_IF_NON_WHITESPACE flag in the text node. (If we
|
|
// end up creating a frame, nsTextFrame::Init will clear the flag.)
|
|
// We don't do this for generated content, because some generated
|
|
// text content is empty text nodes that are about to be initialized.
|
|
// (We check mAdditionalStateBits because only the generated content
|
|
// container's frame construction item is marked with
|
|
// mIsGeneratedContent, and we might not have an aParentFrame.)
|
|
// We don't do it for content that may have XBL anonymous siblings,
|
|
// because they make it difficult to correctly create the frame
|
|
// due to dynamic changes.
|
|
// We don't do it for text that's not a line participant (i.e. SVG text).
|
|
if (AtLineBoundary(aIter) &&
|
|
!styleContext->GetStyleText()->NewlineIsSignificant() &&
|
|
aIter.List()->ParentHasNoXBLChildren() &&
|
|
!(aState.mAdditionalStateBits & NS_FRAME_GENERATED_CONTENT) &&
|
|
(item.mFCData->mBits & FCDATA_IS_LINE_PARTICIPANT) &&
|
|
item.IsWhitespace(aState))
|
|
return NS_OK;
|
|
|
|
return ConstructTextFrame(item.mFCData, aState, item.mContent,
|
|
adjParentFrame, styleContext,
|
|
aFrameItems);
|
|
}
|
|
|
|
// Start background loads during frame construction so that we're
|
|
// guaranteed that they will be started before onload fires.
|
|
styleContext->StartBackgroundImageLoads();
|
|
|
|
nsFrameState savedStateBits = aState.mAdditionalStateBits;
|
|
if (item.mIsGeneratedContent) {
|
|
// Ensure that frames created here are all tagged with
|
|
// NS_FRAME_GENERATED_CONTENT.
|
|
aState.mAdditionalStateBits |= NS_FRAME_GENERATED_CONTENT;
|
|
|
|
// Note that we're not necessarily setting this property on the primary
|
|
// frame for the content for which this is generated content. We might be
|
|
// setting it on a table pseudo-frame inserted under that instead. That's
|
|
// OK, though; we just need to do the property set so that the content will
|
|
// get cleaned up when the frame is destroyed.
|
|
aParentFrame->Properties().Set(GenConPseudoToProperty(styleContext->GetPseudo()),
|
|
item.mContent);
|
|
|
|
// Now that we've passed ownership of item.mContent to the frame, unset
|
|
// our generated content flag so we don't release or unbind it ourselves.
|
|
item.mIsGeneratedContent = PR_FALSE;
|
|
}
|
|
|
|
// XXXbz maybe just inline ConstructFrameFromItemInternal here or something?
|
|
nsresult rv = ConstructFrameFromItemInternal(item, aState, adjParentFrame,
|
|
aFrameItems);
|
|
|
|
aState.mAdditionalStateBits = savedStateBits;
|
|
|
|
return rv;
|
|
}
|
|
|
|
|
|
inline PRBool
|
|
IsRootBoxFrame(nsIFrame *aFrame)
|
|
{
|
|
return (aFrame->GetType() == nsGkAtoms::rootFrame);
|
|
}
|
|
|
|
nsresult
|
|
nsCSSFrameConstructor::ReconstructDocElementHierarchy()
|
|
{
|
|
Element* rootElement = mDocument->GetRootElement();
|
|
if (!rootElement) {
|
|
/* nothing to do */
|
|
return NS_OK;
|
|
}
|
|
return RecreateFramesForContent(rootElement, PR_FALSE);
|
|
}
|
|
|
|
nsIFrame*
|
|
nsCSSFrameConstructor::GetFrameFor(nsIContent* aContent)
|
|
{
|
|
// Get the primary frame associated with the content
|
|
nsIFrame* frame = aContent->GetPrimaryFrame();
|
|
|
|
if (!frame)
|
|
return nsnull;
|
|
|
|
// If the content of the frame is not the desired content then this is not
|
|
// really a frame for the desired content.
|
|
// XXX This check is needed due to bug 135040. Remove it once that's fixed.
|
|
if (frame->GetContent() != aContent) {
|
|
return nsnull;
|
|
}
|
|
|
|
nsIFrame* insertionFrame = frame->GetContentInsertionFrame();
|
|
|
|
NS_ASSERTION(insertionFrame == frame || !frame->IsLeaf(),
|
|
"The insertion frame is the primary frame or the primary frame isn't a leaf");
|
|
|
|
return insertionFrame;
|
|
}
|
|
|
|
nsIFrame*
|
|
nsCSSFrameConstructor::GetAbsoluteContainingBlock(nsIFrame* aFrame)
|
|
{
|
|
NS_PRECONDITION(nsnull != mRootElementFrame, "no root element frame");
|
|
|
|
// Starting with aFrame, look for a frame that is absolutely positioned or
|
|
// relatively positioned
|
|
nsIFrame* containingBlock = nsnull;
|
|
for (nsIFrame* frame = aFrame; frame && !containingBlock;
|
|
frame = frame->GetParent()) {
|
|
if (frame->IsFrameOfType(nsIFrame::eMathML)) {
|
|
// If it's mathml, bail out -- no absolute positioning out from inside
|
|
// mathml frames. Note that we don't make this part of the loop
|
|
// condition because of the stuff at the end of this method...
|
|
return nsnull;
|
|
}
|
|
|
|
// Is it positioned?
|
|
// If it's table-related then ignore it, because for the time
|
|
// being table-related frames are not containers for absolutely
|
|
// positioned child frames.
|
|
const nsStyleDisplay* disp = frame->GetStyleDisplay();
|
|
|
|
if (disp->IsPositioned() && !IsTableRelated(frame->GetType())) {
|
|
// Find the outermost wrapped block under this frame
|
|
for (nsIFrame* wrappedFrame = aFrame; wrappedFrame != frame->GetParent();
|
|
wrappedFrame = wrappedFrame->GetParent()) {
|
|
nsIAtom* frameType = wrappedFrame->GetType();
|
|
if (nsGkAtoms::blockFrame == frameType ||
|
|
#ifdef MOZ_XUL
|
|
nsGkAtoms::XULLabelFrame == frameType ||
|
|
#endif
|
|
nsGkAtoms::positionedInlineFrame == frameType) {
|
|
containingBlock = wrappedFrame;
|
|
} else if (nsGkAtoms::fieldSetFrame == frameType) {
|
|
// If the positioned frame is a fieldset, use the area frame inside it.
|
|
// We don't use GetContentInsertionFrame for fieldsets yet.
|
|
containingBlock = GetFieldSetBlockFrame(wrappedFrame);
|
|
}
|
|
}
|
|
|
|
// We sometimes have a null containing block here because we
|
|
// haven't yet fixed bug 455338. Once we fix that we shouldn't
|
|
// have to loop here.
|
|
}
|
|
}
|
|
|
|
// If we found an absolutely positioned containing block, then use the
|
|
// first-continuation.
|
|
if (containingBlock)
|
|
return AdjustAbsoluteContainingBlock(containingBlock);
|
|
|
|
// If we didn't find it, then use the document element containing block
|
|
return mHasRootAbsPosContainingBlock ? mDocElementContainingBlock : nsnull;
|
|
}
|
|
|
|
nsIFrame*
|
|
nsCSSFrameConstructor::GetFloatContainingBlock(nsIFrame* aFrame)
|
|
{
|
|
// Starting with aFrame, look for a frame that is a float containing block.
|
|
// IF we hit a mathml frame, bail out; we don't allow floating out of mathml
|
|
// frames, because they don't seem to be able to deal.
|
|
// The logic here needs to match the logic in ProcessChildren()
|
|
for (nsIFrame* containingBlock = aFrame;
|
|
containingBlock && !containingBlock->IsFrameOfType(nsIFrame::eMathML) &&
|
|
!containingBlock->IsBoxFrame();
|
|
containingBlock = containingBlock->GetParent()) {
|
|
if (containingBlock->IsFloatContainingBlock()) {
|
|
return containingBlock;
|
|
}
|
|
}
|
|
|
|
// If we didn't find a containing block, then there just isn't
|
|
// one.... return null
|
|
return nsnull;
|
|
}
|
|
|
|
/**
|
|
* This function will check whether aContainer has :after generated content.
|
|
* If so, appending to it should actually insert. The return value is the
|
|
* parent to use for newly-appended content. *aAfterFrame points to the :after
|
|
* frame before which appended content should go, if there is one.
|
|
*/
|
|
static nsIFrame*
|
|
AdjustAppendParentForAfterContent(nsPresContext* aPresContext,
|
|
nsIContent* aContainer,
|
|
nsIFrame* aParentFrame,
|
|
nsIFrame** aAfterFrame)
|
|
{
|
|
// See if the parent has an :after pseudo-element. Check for the presence
|
|
// of style first, since nsLayoutUtils::GetAfterFrame is sorta expensive.
|
|
nsStyleContext* parentStyle = aParentFrame->GetStyleContext();
|
|
if (nsLayoutUtils::HasPseudoStyle(aContainer, parentStyle,
|
|
nsCSSPseudoElements::ePseudo_after,
|
|
aPresContext)) {
|
|
nsIFrame* afterFrame = nsLayoutUtils::GetAfterFrame(aParentFrame);
|
|
if (afterFrame) {
|
|
*aAfterFrame = afterFrame;
|
|
return afterFrame->GetParent();
|
|
}
|
|
}
|
|
|
|
*aAfterFrame = nsnull;
|
|
|
|
if (IsFrameSpecial(aParentFrame)) {
|
|
// We might be in a situation where the last part of the {ib} split was
|
|
// empty. Since we have no ::after pseudo-element, we do in fact want to be
|
|
// appending to that last part, so advance to it if needed. Note that here
|
|
// aParentFrame is the result of a GetLastSpecialSibling call, so must be
|
|
// either the last or next to last special sibling.
|
|
nsIFrame* trailingInline = GetSpecialSibling(aParentFrame);
|
|
if (trailingInline) {
|
|
aParentFrame = trailingInline;
|
|
}
|
|
|
|
// Always make sure to look at the last continuation of the frame
|
|
// for the {ib} case, even if that continuation is empty. We
|
|
// don't do this for the non-special-frame case, since in the
|
|
// other cases appending to the last nonempty continuation is fine
|
|
// and in fact not doing that can confuse code that doesn't know
|
|
// to pull kids from continuations other than its next one.
|
|
aParentFrame = aParentFrame->GetLastContinuation();
|
|
}
|
|
|
|
return aParentFrame;
|
|
}
|
|
|
|
/**
|
|
* This function will get the previous sibling to use for an append operation.
|
|
* it takes a parent frame (must not be null) and its :after frame (may be
|
|
* null).
|
|
*/
|
|
static nsIFrame*
|
|
FindAppendPrevSibling(nsIFrame* aParentFrame, nsIFrame* aAfterFrame)
|
|
{
|
|
if (aAfterFrame) {
|
|
NS_ASSERTION(aAfterFrame->GetParent() == aParentFrame, "Wrong parent");
|
|
return aAfterFrame->GetPrevSibling();
|
|
}
|
|
|
|
return aParentFrame->GetLastChild(nsnull);
|
|
}
|
|
|
|
/**
|
|
* This function will get the next sibling for a frame insert operation given
|
|
* the parent and previous sibling. aPrevSibling may be null.
|
|
*/
|
|
static nsIFrame*
|
|
GetInsertNextSibling(nsIFrame* aParentFrame, nsIFrame* aPrevSibling)
|
|
{
|
|
if (aPrevSibling) {
|
|
return aPrevSibling->GetNextSibling();
|
|
}
|
|
|
|
return aParentFrame->GetFirstChild(nsnull);
|
|
}
|
|
|
|
/**
|
|
* This function is called by ContentAppended() and ContentInserted() when
|
|
* appending flowed frames to a parent's principal child list. It handles the
|
|
* case where the parent is the trailing inline of an {ib} split.
|
|
*/
|
|
nsresult
|
|
nsCSSFrameConstructor::AppendFrames(nsFrameConstructorState& aState,
|
|
nsIFrame* aParentFrame,
|
|
nsFrameItems& aFrameList,
|
|
nsIFrame* aPrevSibling,
|
|
PRBool aIsRecursiveCall)
|
|
{
|
|
NS_PRECONDITION(!IsFrameSpecial(aParentFrame) ||
|
|
!GetSpecialSibling(aParentFrame) ||
|
|
!GetSpecialSibling(aParentFrame)->GetFirstChild(nsnull),
|
|
"aParentFrame has a special sibling with kids?");
|
|
NS_PRECONDITION(!aPrevSibling || aPrevSibling->GetParent() == aParentFrame,
|
|
"Parent and prevsibling don't match");
|
|
|
|
nsIFrame* nextSibling = ::GetInsertNextSibling(aParentFrame, aPrevSibling);
|
|
|
|
NS_ASSERTION(nextSibling ||
|
|
!aParentFrame->GetNextContinuation() ||
|
|
!aParentFrame->GetNextContinuation()->GetFirstChild(nsnull) ||
|
|
aIsRecursiveCall,
|
|
"aParentFrame has later continuations with kids?");
|
|
NS_ASSERTION(nextSibling ||
|
|
!IsFrameSpecial(aParentFrame) ||
|
|
(IsInlineFrame(aParentFrame) &&
|
|
!GetSpecialSibling(aParentFrame) &&
|
|
!aParentFrame->GetNextContinuation()) ||
|
|
aIsRecursiveCall,
|
|
"aParentFrame is not last?");
|
|
|
|
// If we're inserting a list of frames at the end of the trailing inline
|
|
// of an {ib} split, we may need to create additional {ib} siblings to parent
|
|
// them.
|
|
if (!nextSibling && IsFrameSpecial(aParentFrame)) {
|
|
// When we get here, our frame list might start with a block. If it does
|
|
// so, and aParentFrame is an inline, and it and all its previous
|
|
// continuations have no siblings, then put the initial blocks from the
|
|
// frame list into the previous block of the {ib} split. Note that we
|
|
// didn't want to stop at the block part of the split when figuring out
|
|
// initial parent, because that could screw up float parenting; it's easier
|
|
// to do this little fixup here instead.
|
|
if (aFrameList.NotEmpty() && !IsInlineOutside(aFrameList.FirstChild())) {
|
|
// See whether our trailing inline is empty
|
|
nsIFrame* firstContinuation = aParentFrame->GetFirstContinuation();
|
|
if (firstContinuation->GetChildList(nsnull).IsEmpty()) {
|
|
// Our trailing inline is empty. Collect our starting blocks from
|
|
// aFrameList, get the right parent frame for them, and put them in.
|
|
nsFrameList::FrameLinkEnumerator firstNonBlockEnumerator =
|
|
FindFirstNonBlock(aFrameList);
|
|
nsFrameList blockKids = aFrameList.ExtractHead(firstNonBlockEnumerator);
|
|
NS_ASSERTION(blockKids.NotEmpty(), "No blocks?");
|
|
|
|
nsIFrame* prevBlock =
|
|
GetSpecialPrevSibling(firstContinuation)->GetLastContinuation();
|
|
NS_ASSERTION(prevBlock, "Should have previous block here");
|
|
|
|
MoveChildrenTo(aState.mPresContext, aParentFrame, prevBlock, blockKids);
|
|
}
|
|
}
|
|
|
|
// We want to put some of the frames into this inline frame.
|
|
nsFrameList::FrameLinkEnumerator firstBlockEnumerator(aFrameList);
|
|
FindFirstBlock(firstBlockEnumerator);
|
|
|
|
nsFrameList inlineKids = aFrameList.ExtractHead(firstBlockEnumerator);
|
|
if (!inlineKids.IsEmpty()) {
|
|
aState.mFrameManager->AppendFrames(aParentFrame, nsnull, inlineKids);
|
|
}
|
|
|
|
if (!aFrameList.IsEmpty()) {
|
|
const nsStyleDisplay* parentDisplay = aParentFrame->GetStyleDisplay();
|
|
PRBool positioned =
|
|
parentDisplay->mPosition == NS_STYLE_POSITION_RELATIVE ||
|
|
parentDisplay->HasTransform();
|
|
nsFrameItems ibSiblings;
|
|
CreateIBSiblings(aState, aParentFrame, positioned, aFrameList,
|
|
ibSiblings);
|
|
|
|
// Make sure to trigger reflow of the inline that used to be our
|
|
// last one and now isn't anymore, since its GetSkipSides() has
|
|
// changed.
|
|
mPresShell->FrameNeedsReflow(aParentFrame,
|
|
nsIPresShell::eTreeChange,
|
|
NS_FRAME_HAS_DIRTY_CHILDREN);
|
|
|
|
// Recurse so we create new ib siblings as needed for aParentFrame's parent
|
|
return AppendFrames(aState, aParentFrame->GetParent(), ibSiblings,
|
|
aParentFrame, PR_TRUE);
|
|
}
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
// Insert the frames after our aPrevSibling
|
|
return aState.mFrameManager->InsertFrames(aParentFrame, nsnull, aPrevSibling,
|
|
aFrameList);
|
|
}
|
|
|
|
#define UNSET_DISPLAY 255
|
|
|
|
// This gets called to see if the frames corresponding to aSibling and aContent
|
|
// should be siblings in the frame tree. Although (1) rows and cols, (2) row
|
|
// groups and col groups, (3) row groups and captions, (4) legends and content
|
|
// inside fieldsets, (5) popups and other kids of the menu are siblings from a
|
|
// content perspective, they are not considered siblings in the frame tree.
|
|
PRBool
|
|
nsCSSFrameConstructor::IsValidSibling(nsIFrame* aSibling,
|
|
nsIContent* aContent,
|
|
PRUint8& aDisplay)
|
|
{
|
|
nsIFrame* parentFrame = aSibling->GetParent();
|
|
nsIAtom* parentType = nsnull;
|
|
nsIAtom* grandparentType = nsnull;
|
|
if (parentFrame) {
|
|
parentType = parentFrame->GetType();
|
|
nsIFrame* grandparentFrame = parentFrame->GetParent();
|
|
if (grandparentFrame) {
|
|
grandparentType = grandparentFrame->GetType();
|
|
}
|
|
}
|
|
|
|
PRUint8 siblingDisplay = aSibling->GetStyleDisplay()->mDisplay;
|
|
if ((NS_STYLE_DISPLAY_TABLE_COLUMN_GROUP == siblingDisplay) ||
|
|
(NS_STYLE_DISPLAY_TABLE_COLUMN == siblingDisplay) ||
|
|
(NS_STYLE_DISPLAY_TABLE_CAPTION == siblingDisplay) ||
|
|
(NS_STYLE_DISPLAY_TABLE_HEADER_GROUP == siblingDisplay) ||
|
|
(NS_STYLE_DISPLAY_TABLE_ROW_GROUP == siblingDisplay) ||
|
|
(NS_STYLE_DISPLAY_TABLE_FOOTER_GROUP == siblingDisplay) ||
|
|
nsGkAtoms::menuFrame == parentType) {
|
|
// if we haven't already, construct a style context to find the display type of aContent
|
|
if (UNSET_DISPLAY == aDisplay) {
|
|
nsRefPtr<nsStyleContext> styleContext;
|
|
nsIFrame* styleParent;
|
|
PRBool providerIsChild;
|
|
if (NS_FAILED(aSibling->
|
|
GetParentStyleContextFrame(aSibling->PresContext(),
|
|
&styleParent,
|
|
&providerIsChild)) ||
|
|
!styleParent) {
|
|
NS_NOTREACHED("Shouldn't happen");
|
|
return PR_FALSE;
|
|
}
|
|
// XXXbz when this code is killed, the state argument to
|
|
// ResolveStyleContext can be made non-optional.
|
|
styleContext = ResolveStyleContext(styleParent, aContent, nsnull);
|
|
if (!styleContext) return PR_FALSE;
|
|
const nsStyleDisplay* display = styleContext->GetStyleDisplay();
|
|
aDisplay = display->mDisplay;
|
|
}
|
|
if (nsGkAtoms::menuFrame == parentType) {
|
|
return
|
|
(NS_STYLE_DISPLAY_POPUP == aDisplay) ==
|
|
(NS_STYLE_DISPLAY_POPUP == siblingDisplay);
|
|
}
|
|
// To have decent performance we want to return false in cases in which
|
|
// reordering the two siblings has no effect on display. To ensure
|
|
// correctness, we MUST return false in cases where the two siblings have
|
|
// the same desired parent type and live on different display lists.
|
|
// Specificaly, columns and column groups should only consider columns and
|
|
// column groups as valid siblings. Captions should only consider other
|
|
// captions. All other things should consider each other as valid
|
|
// siblings. The restriction in the |if| above on siblingDisplay is ok,
|
|
// because for correctness the only part that really needs to happen is to
|
|
// not consider captions, column groups, and row/header/footer groups
|
|
// siblings of each other. Treating a column or colgroup as a valid
|
|
// sibling of a non-table-related frame will just mean we end up reframing.
|
|
if ((siblingDisplay == NS_STYLE_DISPLAY_TABLE_CAPTION) !=
|
|
(aDisplay == NS_STYLE_DISPLAY_TABLE_CAPTION)) {
|
|
// One's a caption and the other is not. Not valid siblings.
|
|
return PR_FALSE;
|
|
}
|
|
|
|
if ((siblingDisplay == NS_STYLE_DISPLAY_TABLE_COLUMN_GROUP ||
|
|
siblingDisplay == NS_STYLE_DISPLAY_TABLE_COLUMN) !=
|
|
(aDisplay == NS_STYLE_DISPLAY_TABLE_COLUMN_GROUP ||
|
|
aDisplay == NS_STYLE_DISPLAY_TABLE_COLUMN)) {
|
|
// One's a column or column group and the other is not. Not valid
|
|
// siblings.
|
|
return PR_FALSE;
|
|
}
|
|
|
|
return PR_TRUE;
|
|
}
|
|
else if (nsGkAtoms::fieldSetFrame == parentType ||
|
|
(nsGkAtoms::fieldSetFrame == grandparentType &&
|
|
nsGkAtoms::blockFrame == parentType)) {
|
|
// Legends can be sibling of legends but not of other content in the fieldset
|
|
nsIAtom* sibType = aSibling->GetType();
|
|
nsCOMPtr<nsIDOMHTMLLegendElement> legendContent(do_QueryInterface(aContent));
|
|
|
|
if ((legendContent && (nsGkAtoms::legendFrame != sibType)) ||
|
|
(!legendContent && (nsGkAtoms::legendFrame == sibType)))
|
|
return PR_FALSE;
|
|
}
|
|
|
|
return PR_TRUE;
|
|
}
|
|
|
|
nsIFrame*
|
|
nsCSSFrameConstructor::FindFrameForContentSibling(nsIContent* aContent,
|
|
nsIContent* aTargetContent,
|
|
PRUint8& aTargetContentDisplay,
|
|
PRBool aPrevSibling)
|
|
{
|
|
nsIFrame* sibling = aContent->GetPrimaryFrame();
|
|
if (!sibling || sibling->GetContent() != aContent) {
|
|
// XXX the GetContent() != aContent check is needed due to bug 135040.
|
|
// Remove it once that's fixed.
|
|
return nsnull;
|
|
}
|
|
|
|
// If the frame is out-of-flow, GetPrimaryFrame() will have returned the
|
|
// out-of-flow frame; we want the placeholder.
|
|
if (sibling->GetStateBits() & NS_FRAME_OUT_OF_FLOW) {
|
|
nsIFrame* placeholderFrame = mPresShell->FrameManager()->GetPlaceholderFrameFor(sibling);
|
|
NS_ASSERTION(placeholderFrame, "no placeholder for out-of-flow frame");
|
|
sibling = placeholderFrame;
|
|
}
|
|
|
|
// The frame we have now should never be a continuation
|
|
NS_ASSERTION(!sibling->GetPrevContinuation(), "How did that happen?");
|
|
|
|
if (aPrevSibling) {
|
|
// The frame may be a special frame (a split inline frame that
|
|
// contains a block). Get the last part of that split.
|
|
if (IsFrameSpecial(sibling)) {
|
|
sibling = GetLastSpecialSibling(sibling, PR_TRUE);
|
|
}
|
|
|
|
// The frame may have a continuation. If so, we want the last
|
|
// non-overflow-container continuation as our previous sibling.
|
|
sibling = sibling->GetTailContinuation();
|
|
}
|
|
|
|
if (aTargetContent &&
|
|
!IsValidSibling(sibling, aTargetContent, aTargetContentDisplay)) {
|
|
sibling = nsnull;
|
|
}
|
|
|
|
return sibling;
|
|
}
|
|
|
|
nsIFrame*
|
|
nsCSSFrameConstructor::FindPreviousSibling(const ChildIterator& aFirst,
|
|
ChildIterator aIter,
|
|
PRUint8& aTargetContentDisplay)
|
|
{
|
|
nsIContent* child = *aIter;
|
|
|
|
// Note: not all content objects are associated with a frame (e.g., if it's
|
|
// `display: none') so keep looking until we find a previous frame
|
|
while (aIter != aFirst) {
|
|
--aIter;
|
|
nsIFrame* prevSibling =
|
|
FindFrameForContentSibling(*aIter, child, aTargetContentDisplay, PR_TRUE);
|
|
|
|
if (prevSibling) {
|
|
// Found a previous sibling, we're done!
|
|
return prevSibling;
|
|
}
|
|
}
|
|
|
|
return nsnull;
|
|
}
|
|
|
|
nsIFrame*
|
|
nsCSSFrameConstructor::FindNextSibling(ChildIterator aIter,
|
|
const ChildIterator& aLast,
|
|
PRUint8& aTargetContentDisplay)
|
|
{
|
|
if (aIter == aLast) {
|
|
// XXXbz Can happen when XBL lies to us about insertion points. This check
|
|
// might be able to go away once bug 474324 is fixed.
|
|
return nsnull;
|
|
}
|
|
|
|
nsIContent* child = *aIter;
|
|
|
|
while (++aIter != aLast) {
|
|
nsIFrame* nextSibling =
|
|
FindFrameForContentSibling(*aIter, child, aTargetContentDisplay, PR_FALSE);
|
|
|
|
if (nextSibling) {
|
|
// We found a next sibling, we're done!
|
|
return nextSibling;
|
|
}
|
|
}
|
|
|
|
return nsnull;
|
|
}
|
|
|
|
// For fieldsets, returns the area frame, if the child is not a legend.
|
|
static nsIFrame*
|
|
GetAdjustedParentFrame(nsIFrame* aParentFrame,
|
|
nsIAtom* aParentFrameType,
|
|
nsIContent* aChildContent)
|
|
{
|
|
NS_PRECONDITION(nsGkAtoms::tableOuterFrame != aParentFrameType,
|
|
"Shouldn't be happening!");
|
|
|
|
nsIFrame* newParent = nsnull;
|
|
|
|
if (nsGkAtoms::fieldSetFrame == aParentFrameType) {
|
|
// If the parent is a fieldSet, use the fieldSet's area frame as the
|
|
// parent unless the new content is a legend.
|
|
nsCOMPtr<nsIDOMHTMLLegendElement> legendContent(do_QueryInterface(aChildContent));
|
|
if (!legendContent) {
|
|
newParent = GetFieldSetBlockFrame(aParentFrame);
|
|
}
|
|
}
|
|
return (newParent) ? newParent : aParentFrame;
|
|
}
|
|
|
|
nsIFrame*
|
|
nsCSSFrameConstructor::GetInsertionPrevSibling(nsIFrame*& aParentFrame,
|
|
nsIContent* aContainer,
|
|
nsIContent* aChild,
|
|
PRBool* aIsAppend,
|
|
PRBool* aIsRangeInsertSafe,
|
|
nsIContent* aStartSkipChild,
|
|
nsIContent* aEndSkipChild)
|
|
{
|
|
*aIsAppend = PR_FALSE;
|
|
|
|
// Find the frame that precedes the insertion point. Walk backwards
|
|
// from the parent frame to get the parent content, because if an
|
|
// XBL insertion point is involved, we'll need to use _that_ to find
|
|
// the preceding frame.
|
|
|
|
NS_PRECONDITION(aParentFrame, "Must have parent frame to start with");
|
|
nsIContent* container = aParentFrame->GetContent();
|
|
|
|
ChildIterator first, last;
|
|
ChildIterator::Init(container, &first, &last);
|
|
ChildIterator iter(first);
|
|
PRBool xblCase = iter.XBLInvolved() || container != aContainer;
|
|
if (xblCase || !aChild->IsRootOfAnonymousSubtree()) {
|
|
// The check for IsRootOfAnonymousSubtree() is because editor is
|
|
// severely broken and calls us directly for native anonymous
|
|
// nodes that it creates.
|
|
if (aStartSkipChild) {
|
|
iter.seek(aStartSkipChild);
|
|
} else {
|
|
iter.seek(aChild);
|
|
}
|
|
}
|
|
#ifdef DEBUG
|
|
else {
|
|
NS_WARNING("Someone passed native anonymous content directly into frame "
|
|
"construction. Stop doing that!");
|
|
}
|
|
#endif
|
|
|
|
PRUint8 childDisplay = UNSET_DISPLAY;
|
|
nsIFrame* prevSibling = FindPreviousSibling(first, iter, childDisplay);
|
|
|
|
// Now, find the geometric parent so that we can handle
|
|
// continuations properly. Use the prev sibling if we have it;
|
|
// otherwise use the next sibling.
|
|
if (prevSibling) {
|
|
aParentFrame = prevSibling->GetParent()->GetContentInsertionFrame();
|
|
}
|
|
else {
|
|
// If there is no previous sibling, then find the frame that follows
|
|
if (aEndSkipChild) {
|
|
iter.seek(aEndSkipChild);
|
|
iter--;
|
|
}
|
|
nsIFrame* nextSibling = FindNextSibling(iter, last, childDisplay);
|
|
|
|
if (nextSibling) {
|
|
aParentFrame = nextSibling->GetParent()->GetContentInsertionFrame();
|
|
}
|
|
else {
|
|
// No previous or next sibling, so treat this like an appended frame.
|
|
*aIsAppend = PR_TRUE;
|
|
if (IsFrameSpecial(aParentFrame)) {
|
|
// Since we're appending, we'll walk to the last anonymous frame
|
|
// that was created for the broken inline frame. But don't walk
|
|
// to the trailing inline if it's empty; stop at the block.
|
|
aParentFrame = GetLastSpecialSibling(aParentFrame, PR_FALSE);
|
|
}
|
|
// Get continuation that parents the last child. This MUST be done
|
|
// before the AdjustAppendParentForAfterContent call.
|
|
aParentFrame = nsLayoutUtils::GetLastContinuationWithChild(aParentFrame);
|
|
// Deal with fieldsets
|
|
aParentFrame = ::GetAdjustedParentFrame(aParentFrame,
|
|
aParentFrame->GetType(),
|
|
aChild);
|
|
nsIFrame* appendAfterFrame;
|
|
aParentFrame =
|
|
::AdjustAppendParentForAfterContent(mPresShell->GetPresContext(),
|
|
container, aParentFrame,
|
|
&appendAfterFrame);
|
|
prevSibling = ::FindAppendPrevSibling(aParentFrame, appendAfterFrame);
|
|
}
|
|
}
|
|
|
|
*aIsRangeInsertSafe = (childDisplay == UNSET_DISPLAY);
|
|
return prevSibling;
|
|
}
|
|
|
|
static PRBool
|
|
IsSpecialFramesetChild(nsIContent* aContent)
|
|
{
|
|
// IMPORTANT: This must match the conditions in nsHTMLFramesetFrame::Init.
|
|
return aContent->IsHTML() &&
|
|
(aContent->Tag() == nsGkAtoms::frameset ||
|
|
aContent->Tag() == nsGkAtoms::frame);
|
|
}
|
|
|
|
static void
|
|
InvalidateCanvasIfNeeded(nsIPresShell* presShell, nsIContent* node);
|
|
|
|
#ifdef MOZ_XUL
|
|
|
|
static
|
|
PRBool
|
|
IsXULListBox(nsIContent* aContainer)
|
|
{
|
|
return (aContainer->IsXUL() && aContainer->Tag() == nsGkAtoms::listbox);
|
|
}
|
|
|
|
static
|
|
nsListBoxBodyFrame*
|
|
MaybeGetListBoxBodyFrame(nsIContent* aContainer, nsIContent* aChild)
|
|
{
|
|
if (!aContainer)
|
|
return nsnull;
|
|
|
|
if (IsXULListBox(aContainer) &&
|
|
aChild->IsXUL() && aChild->Tag() == nsGkAtoms::listitem) {
|
|
nsCOMPtr<nsIDOMXULElement> xulElement = do_QueryInterface(aContainer);
|
|
nsCOMPtr<nsIBoxObject> boxObject;
|
|
xulElement->GetBoxObject(getter_AddRefs(boxObject));
|
|
nsCOMPtr<nsPIListBoxObject> listBoxObject = do_QueryInterface(boxObject);
|
|
if (listBoxObject) {
|
|
return listBoxObject->GetListBoxBody(PR_FALSE);
|
|
}
|
|
}
|
|
|
|
return nsnull;
|
|
}
|
|
#endif
|
|
|
|
void
|
|
nsCSSFrameConstructor::AddTextItemIfNeeded(nsFrameConstructorState& aState,
|
|
nsIFrame* aParentFrame,
|
|
nsIContent* aPossibleTextContent,
|
|
FrameConstructionItemList& aItems)
|
|
{
|
|
NS_PRECONDITION(aPossibleTextContent, "Must have node");
|
|
if (!aPossibleTextContent->IsNodeOfType(nsINode::eTEXT) ||
|
|
!aPossibleTextContent->HasFlag(NS_CREATE_FRAME_IF_NON_WHITESPACE)) {
|
|
// Not text, or not suppressed due to being all-whitespace (if it
|
|
// were being suppressed, it would have the
|
|
// NS_CREATE_FRAME_IF_NON_WHITESPACE flag)
|
|
return;
|
|
}
|
|
NS_ASSERTION(!aPossibleTextContent->GetPrimaryFrame(),
|
|
"Text node has a frame and NS_CREATE_FRAME_IF_NON_WHITESPACE");
|
|
AddFrameConstructionItems(aState, aPossibleTextContent, PR_FALSE,
|
|
aParentFrame, aItems);
|
|
}
|
|
|
|
void
|
|
nsCSSFrameConstructor::ReframeTextIfNeeded(nsIContent* aParentContent,
|
|
nsIContent* aContent)
|
|
{
|
|
if (!aContent->IsNodeOfType(nsINode::eTEXT) ||
|
|
!aContent->HasFlag(NS_CREATE_FRAME_IF_NON_WHITESPACE)) {
|
|
// Not text, or not suppressed due to being all-whitespace (if it
|
|
// were being suppressed, it would have the
|
|
// NS_CREATE_FRAME_IF_NON_WHITESPACE flag)
|
|
return;
|
|
}
|
|
NS_ASSERTION(!aContent->GetPrimaryFrame(),
|
|
"Text node has a frame and NS_CREATE_FRAME_IF_NON_WHITESPACE");
|
|
ContentInserted(aParentContent, aContent, nsnull, PR_FALSE);
|
|
}
|
|
|
|
// We want to disable lazy frame construction for nodes that are under an
|
|
// editor. We use nsINode::IsEditable, but that includes inputs with type text
|
|
// and password and textareas, which are common and aren't really editable (the
|
|
// native anonymous content under them is what is actually editable) so we want
|
|
// to construct frames for those lazily.
|
|
// The logic for this check is based on
|
|
// nsGenericHTMLFormElement::UpdateEditableFormControlState and so must be kept
|
|
// in sync with that. MayHaveContentEditableAttr() being true only indicates
|
|
// a contenteditable attribute, it doesn't indicate whether it is true or false,
|
|
// so we force eager construction in some cases when the node is not editable,
|
|
// but that should be rare.
|
|
static inline PRBool
|
|
IsActuallyEditable(nsIContent* aContainer, nsIContent* aChild)
|
|
{
|
|
return (aChild->IsEditable() &&
|
|
(aContainer->IsEditable() ||
|
|
aChild->MayHaveContentEditableAttr()));
|
|
}
|
|
|
|
// For inserts aChild should be valid, for appends it should be null.
|
|
// Returns true if this operation can be lazy, false if not.
|
|
PRBool
|
|
nsCSSFrameConstructor::MaybeConstructLazily(Operation aOperation,
|
|
nsIContent* aContainer,
|
|
nsIContent* aChild)
|
|
{
|
|
if (mPresShell->GetPresContext()->IsChrome() || !aContainer ||
|
|
aContainer->IsInNativeAnonymousSubtree() || aContainer->IsXUL()) {
|
|
return PR_FALSE;
|
|
}
|
|
|
|
if (aOperation == CONTENTINSERT) {
|
|
if (aChild->IsRootOfAnonymousSubtree() ||
|
|
aChild->IsXUL() || IsActuallyEditable(aContainer, aChild)) {
|
|
return PR_FALSE;
|
|
}
|
|
} else { // CONTENTAPPEND
|
|
NS_ASSERTION(aOperation == CONTENTAPPEND,
|
|
"operation should be either insert or append");
|
|
for (nsIContent* child = aChild; child; child = child->GetNextSibling()) {
|
|
NS_ASSERTION(!child->IsRootOfAnonymousSubtree(),
|
|
"Should be coming through the CONTENTAPPEND case");
|
|
if (child->IsXUL() || IsActuallyEditable(aContainer, child)) {
|
|
return PR_FALSE;
|
|
}
|
|
}
|
|
}
|
|
|
|
// We can construct lazily; just need to set suitable bits in the content
|
|
// tree.
|
|
|
|
// Walk up the tree setting the NODE_DESCENDANTS_NEED_FRAMES bit as we go.
|
|
nsIContent* content = aContainer;
|
|
#ifdef DEBUG
|
|
// If we hit a node with no primary frame, or the NODE_NEEDS_FRAME bit set
|
|
// we want to assert, but leaf frames that process their own children and may
|
|
// ignore anonymous children (eg framesets) make this complicated. So we set
|
|
// these two booleans if we encounter these situations and unset them if we
|
|
// hit a node with a leaf frame.
|
|
PRBool noPrimaryFrame = PR_FALSE;
|
|
PRBool needsFrameBitSet = PR_FALSE;
|
|
#endif
|
|
while (content &&
|
|
!content->HasFlag(NODE_DESCENDANTS_NEED_FRAMES)) {
|
|
#ifdef DEBUG
|
|
if (content->GetPrimaryFrame() && content->GetPrimaryFrame()->IsLeaf()) {
|
|
noPrimaryFrame = needsFrameBitSet = PR_FALSE;
|
|
}
|
|
if (!noPrimaryFrame && !content->GetPrimaryFrame()) {
|
|
noPrimaryFrame = PR_TRUE;
|
|
}
|
|
if (!needsFrameBitSet && content->HasFlag(NODE_NEEDS_FRAME)) {
|
|
needsFrameBitSet = PR_TRUE;
|
|
}
|
|
#endif
|
|
content->SetFlags(NODE_DESCENDANTS_NEED_FRAMES);
|
|
content = content->GetFlattenedTreeParent();
|
|
}
|
|
#ifdef DEBUG
|
|
if (content && content->GetPrimaryFrame() &&
|
|
content->GetPrimaryFrame()->IsLeaf()) {
|
|
noPrimaryFrame = needsFrameBitSet = PR_FALSE;
|
|
}
|
|
NS_ASSERTION(!noPrimaryFrame, "Ancestors of nodes with frames to be "
|
|
"constructed lazily should have frames");
|
|
NS_ASSERTION(!needsFrameBitSet, "Ancestors of nodes with frames to be "
|
|
"constructed lazily should not have NEEDS_FRAME bit set");
|
|
#endif
|
|
|
|
// Set NODE_NEEDS_FRAME on the new nodes.
|
|
if (aOperation == CONTENTINSERT) {
|
|
NS_ASSERTION(!aChild->GetPrimaryFrame() ||
|
|
aChild->GetPrimaryFrame()->GetContent() != aChild,
|
|
//XXX the aChild->GetPrimaryFrame()->GetContent() != aChild
|
|
// check is needed due to bug 135040. Remove it once that's
|
|
// fixed.
|
|
"setting NEEDS_FRAME on a node that already has a frame?");
|
|
aChild->SetFlags(NODE_NEEDS_FRAME);
|
|
} else { // CONTENTAPPEND
|
|
for (nsIContent* child = aChild; child; child = child->GetNextSibling()) {
|
|
NS_ASSERTION(!child->GetPrimaryFrame() ||
|
|
child->GetPrimaryFrame()->GetContent() != child,
|
|
//XXX the child->GetPrimaryFrame()->GetContent() != child
|
|
// check is needed due to bug 135040. Remove it once that's
|
|
// fixed.
|
|
"setting NEEDS_FRAME on a node that already has a frame?");
|
|
child->SetFlags(NODE_NEEDS_FRAME);
|
|
}
|
|
}
|
|
|
|
PostRestyleEventInternal(PR_TRUE);
|
|
return PR_TRUE;
|
|
}
|
|
|
|
void
|
|
nsCSSFrameConstructor::CreateNeededFrames(nsIContent* aContent)
|
|
{
|
|
NS_ASSERTION(!aContent->HasFlag(NODE_NEEDS_FRAME),
|
|
"shouldn't get here with a content node that has needs frame bit set");
|
|
NS_ASSERTION(aContent->HasFlag(NODE_DESCENDANTS_NEED_FRAMES),
|
|
"should only get here with a content node that has descendants needing frames");
|
|
|
|
aContent->UnsetFlags(NODE_DESCENDANTS_NEED_FRAMES);
|
|
|
|
// We could either descend first (on nodes that don't have NODE_NEEDS_FRAME
|
|
// set) or issue content notifications for our kids first. In absence of
|
|
// anything definitive either way we'll go with the latter.
|
|
|
|
// It might be better to use GetChildArray and scan it completely first and
|
|
// then issue all notifications. (We have to scan it completely first because
|
|
// constructing frames can set attributes, which can change the storage of
|
|
// child lists).
|
|
|
|
// Scan the children of aContent to see what operations (if any) we need to
|
|
// perform.
|
|
PRUint32 childCount = aContent->GetChildCount();
|
|
PRBool inRun = PR_FALSE;
|
|
nsIContent* firstChildInRun = nsnull;
|
|
for (PRUint32 i = 0; i < childCount; i++) {
|
|
nsIContent* child = aContent->GetChildAt(i);
|
|
if (child->HasFlag(NODE_NEEDS_FRAME)) {
|
|
NS_ASSERTION(!child->GetPrimaryFrame() ||
|
|
child->GetPrimaryFrame()->GetContent() != child,
|
|
//XXX the child->GetPrimaryFrame()->GetContent() != child
|
|
// check is needed due to bug 135040. Remove it once that's
|
|
// fixed.
|
|
"NEEDS_FRAME set on a node that already has a frame?");
|
|
if (!inRun) {
|
|
inRun = PR_TRUE;
|
|
firstChildInRun = child;
|
|
}
|
|
} else {
|
|
if (inRun) {
|
|
inRun = PR_FALSE;
|
|
// generate a ContentRangeInserted for [startOfRun,i)
|
|
ContentRangeInserted(aContent, firstChildInRun, child, nsnull,
|
|
PR_FALSE);
|
|
}
|
|
}
|
|
}
|
|
if (inRun) {
|
|
ContentAppended(aContent, firstChildInRun, PR_FALSE);
|
|
}
|
|
|
|
// Now descend.
|
|
ChildIterator iter, last;
|
|
for (ChildIterator::Init(aContent, &iter, &last);
|
|
iter != last;
|
|
++iter) {
|
|
nsIContent* child = *iter;
|
|
if (child->HasFlag(NODE_DESCENDANTS_NEED_FRAMES)) {
|
|
CreateNeededFrames(child);
|
|
}
|
|
}
|
|
}
|
|
|
|
void nsCSSFrameConstructor::CreateNeededFrames()
|
|
{
|
|
NS_ASSERTION(!nsContentUtils::IsSafeToRunScript(),
|
|
"Someone forgot a script blocker");
|
|
|
|
Element* rootElement = mDocument->GetRootElement();
|
|
NS_ASSERTION(!rootElement || !rootElement->HasFlag(NODE_NEEDS_FRAME),
|
|
"root element should not have frame created lazily");
|
|
if (rootElement && rootElement->HasFlag(NODE_DESCENDANTS_NEED_FRAMES)) {
|
|
BeginUpdate();
|
|
CreateNeededFrames(rootElement);
|
|
EndUpdate();
|
|
}
|
|
}
|
|
|
|
void
|
|
nsCSSFrameConstructor::IssueSingleInsertNofications(nsIContent* aContainer,
|
|
nsIContent* aStartChild,
|
|
nsIContent* aEndChild,
|
|
PRBool aAllowLazyConstruction)
|
|
{
|
|
for (nsIContent* child = aStartChild;
|
|
child != aEndChild;
|
|
child = child->GetNextSibling()) {
|
|
if ((child->GetPrimaryFrame() ||
|
|
mPresShell->FrameManager()->GetUndisplayedContent(child))
|
|
#ifdef MOZ_XUL
|
|
// Except listboxes suck, so do NOT skip anything here if
|
|
// we plan to notify a listbox.
|
|
&& !MaybeGetListBoxBodyFrame(aContainer, child)
|
|
#endif
|
|
) {
|
|
// Already have a frame or undisplayed entry for this content; a
|
|
// previous ContentInserted in this loop must have reconstructed
|
|
// its insertion parent. Skip it.
|
|
continue;
|
|
}
|
|
// Call ContentInserted with this node.
|
|
ContentInserted(aContainer, child, mTempFrameTreeState,
|
|
aAllowLazyConstruction);
|
|
}
|
|
}
|
|
|
|
nsIFrame*
|
|
nsCSSFrameConstructor::GetRangeInsertionPoint(nsIContent* aContainer,
|
|
nsIFrame* aParentFrame,
|
|
nsIContent* aStartChild,
|
|
nsIContent* aEndChild,
|
|
PRBool aAllowLazyConstruction)
|
|
{
|
|
// See if we have an XBL insertion point. If so, then that's our
|
|
// real parent frame; if not, then the frame hasn't been built yet
|
|
// and we just bail.
|
|
nsIFrame* insertionPoint;
|
|
PRBool multiple = PR_FALSE;
|
|
GetInsertionPoint(aParentFrame, nsnull, &insertionPoint, &multiple);
|
|
if (! insertionPoint)
|
|
return nsnull; // Don't build the frames.
|
|
|
|
PRBool hasInsertion = PR_FALSE;
|
|
if (!multiple) {
|
|
// XXXbz XBL2/sXBL issue
|
|
nsIDocument* document = aStartChild->GetDocument();
|
|
// XXXbz how would |document| be null here?
|
|
if (document &&
|
|
document->BindingManager()->GetInsertionParent(aStartChild)) {
|
|
hasInsertion = PR_TRUE;
|
|
}
|
|
}
|
|
|
|
if (multiple || hasInsertion) {
|
|
// We have an insertion point. There are some additional tests we need to do
|
|
// in order to ensure that an append is a safe operation.
|
|
PRUint32 childCount = 0;
|
|
|
|
if (!multiple) {
|
|
// We may need to make multiple ContentInserted calls instead. A
|
|
// reasonable heuristic to employ (in order to maintain good performance)
|
|
// is to find out if the insertion point's content node contains any
|
|
// explicit children. If it does not, then it is highly likely that
|
|
// an append is occurring. (Note it is not definite, and there are insane
|
|
// cases we will not deal with by employing this heuristic, but it beats
|
|
// always falling back to multiple ContentInserted calls).
|
|
//
|
|
// In the multiple insertion point case, we know we're going to need to do
|
|
// multiple ContentInserted calls anyway.
|
|
childCount = insertionPoint->GetContent()->GetChildCount();
|
|
}
|
|
|
|
// If we have multiple insertion points or if we have an insertion point
|
|
// and the operation is not a true append or if the insertion point already
|
|
// has explicit children, then we must fall back.
|
|
if (multiple || aEndChild != nsnull || childCount > 0) {
|
|
// Now comes the fun part. For each inserted child, make a
|
|
// ContentInserted call as if it had just gotten inserted and
|
|
// let ContentInserted handle the mess.
|
|
IssueSingleInsertNofications(aContainer, aStartChild, aEndChild,
|
|
aAllowLazyConstruction);
|
|
return nsnull;
|
|
}
|
|
}
|
|
|
|
return insertionPoint;
|
|
}
|
|
|
|
PRBool
|
|
nsCSSFrameConstructor::MaybeRecreateForFrameset(nsIFrame* aParentFrame,
|
|
nsIContent* aStartChild,
|
|
nsIContent* aEndChild)
|
|
{
|
|
if (aParentFrame->GetType() == nsGkAtoms::frameSetFrame) {
|
|
// Check whether we have any kids we care about.
|
|
for (nsIContent* cur = aStartChild;
|
|
cur != aEndChild;
|
|
cur = cur->GetNextSibling()) {
|
|
if (IsSpecialFramesetChild(cur)) {
|
|
// Just reframe the parent, since framesets are weird like that.
|
|
RecreateFramesForContent(aParentFrame->GetContent(), PR_FALSE);
|
|
return PR_TRUE;
|
|
}
|
|
}
|
|
}
|
|
return PR_FALSE;
|
|
}
|
|
|
|
nsresult
|
|
nsCSSFrameConstructor::ContentAppended(nsIContent* aContainer,
|
|
nsIContent* aFirstNewContent,
|
|
PRBool aAllowLazyConstruction)
|
|
{
|
|
AUTO_LAYOUT_PHASE_ENTRY_POINT(mPresShell->GetPresContext(), FrameC);
|
|
NS_PRECONDITION(mUpdateCount != 0,
|
|
"Should be in an update while creating frames");
|
|
|
|
#ifdef DEBUG
|
|
if (gNoisyContentUpdates) {
|
|
printf("nsCSSFrameConstructor::ContentAppended container=%p "
|
|
"first-child=%p lazy=%d\n",
|
|
static_cast<void*>(aContainer), aFirstNewContent,
|
|
aAllowLazyConstruction);
|
|
if (gReallyNoisyContentUpdates && aContainer) {
|
|
aContainer->List(stdout, 0);
|
|
}
|
|
}
|
|
#endif
|
|
|
|
#ifdef DEBUG
|
|
for (nsIContent* child = aFirstNewContent;
|
|
child;
|
|
child = child->GetNextSibling()) {
|
|
// XXX the GetContent() != child check is needed due to bug 135040.
|
|
// Remove it once that's fixed.
|
|
NS_ASSERTION(!child->GetPrimaryFrame() ||
|
|
child->GetPrimaryFrame()->GetContent() != child,
|
|
"asked to construct a frame for a node that already has a frame");
|
|
}
|
|
#endif
|
|
|
|
#ifdef MOZ_XUL
|
|
if (aContainer) {
|
|
PRInt32 namespaceID;
|
|
nsIAtom* tag =
|
|
mDocument->BindingManager()->ResolveTag(aContainer, &namespaceID);
|
|
|
|
// Just ignore tree tags, anyway we don't create any frames for them.
|
|
if (tag == nsGkAtoms::treechildren ||
|
|
tag == nsGkAtoms::treeitem ||
|
|
tag == nsGkAtoms::treerow)
|
|
return NS_OK;
|
|
|
|
}
|
|
#endif // MOZ_XUL
|
|
|
|
// Get the frame associated with the content
|
|
nsIFrame* parentFrame = GetFrameFor(aContainer);
|
|
if (! parentFrame)
|
|
return NS_OK;
|
|
|
|
if (aAllowLazyConstruction &&
|
|
MaybeConstructLazily(CONTENTAPPEND, aContainer, aFirstNewContent)) {
|
|
return NS_OK;
|
|
}
|
|
|
|
LAYOUT_PHASE_TEMP_EXIT();
|
|
parentFrame = GetRangeInsertionPoint(aContainer, parentFrame,
|
|
aFirstNewContent, nsnull,
|
|
aAllowLazyConstruction);
|
|
LAYOUT_PHASE_TEMP_REENTER();
|
|
if (!parentFrame) {
|
|
return NS_OK;
|
|
}
|
|
|
|
LAYOUT_PHASE_TEMP_EXIT();
|
|
if (MaybeRecreateForFrameset(parentFrame, aFirstNewContent, nsnull)) {
|
|
LAYOUT_PHASE_TEMP_REENTER();
|
|
return NS_OK;
|
|
}
|
|
LAYOUT_PHASE_TEMP_REENTER();
|
|
|
|
if (parentFrame->IsLeaf()) {
|
|
// Nothing to do here; we shouldn't be constructing kids of leaves
|
|
// Clear lazy bits so we don't try to construct again.
|
|
ClearLazyBits(aFirstNewContent, nsnull);
|
|
return NS_OK;
|
|
}
|
|
|
|
if (parentFrame->IsFrameOfType(nsIFrame::eMathML)) {
|
|
LAYOUT_PHASE_TEMP_EXIT();
|
|
nsresult rv = RecreateFramesForContent(parentFrame->GetContent(), PR_FALSE);
|
|
LAYOUT_PHASE_TEMP_REENTER();
|
|
return rv;
|
|
}
|
|
|
|
// If the frame we are manipulating is a ``special'' frame (that is, one
|
|
// that's been created as a result of a block-in-inline situation) then we
|
|
// need to append to the last special sibling, not to the frame itself.
|
|
PRBool parentSpecial = IsFrameSpecial(parentFrame);
|
|
if (parentSpecial) {
|
|
#ifdef DEBUG
|
|
if (gNoisyContentUpdates) {
|
|
printf("nsCSSFrameConstructor::ContentAppended: parentFrame=");
|
|
nsFrame::ListTag(stdout, parentFrame);
|
|
printf(" is special\n");
|
|
}
|
|
#endif
|
|
|
|
// Since we're appending, we'll walk to the last anonymous frame
|
|
// that was created for the broken inline frame. But don't walk
|
|
// to the trailing inline if it's empty; stop at the block.
|
|
parentFrame = GetLastSpecialSibling(parentFrame, PR_FALSE);
|
|
}
|
|
|
|
// Get continuation that parents the last child. This MUST be done
|
|
// before the AdjustAppendParentForAfterContent call.
|
|
parentFrame = nsLayoutUtils::GetLastContinuationWithChild(parentFrame);
|
|
|
|
// We should never get here with fieldsets, since they have multiple
|
|
// insertion points.
|
|
NS_ASSERTION(parentFrame->GetType() != nsGkAtoms::fieldSetFrame,
|
|
"Unexpected parent");
|
|
|
|
// Deal with possible :after generated content on the parent
|
|
nsIFrame* parentAfterFrame;
|
|
parentFrame =
|
|
::AdjustAppendParentForAfterContent(mPresShell->GetPresContext(),
|
|
aContainer, parentFrame,
|
|
&parentAfterFrame);
|
|
|
|
// Create some new frames
|
|
nsFrameConstructorState state(mPresShell, mFixedContainingBlock,
|
|
GetAbsoluteContainingBlock(parentFrame),
|
|
GetFloatContainingBlock(parentFrame));
|
|
|
|
// See if the containing block has :first-letter style applied.
|
|
PRBool haveFirstLetterStyle = PR_FALSE, haveFirstLineStyle = PR_FALSE;
|
|
nsIFrame* containingBlock = state.mFloatedItems.containingBlock;
|
|
if (containingBlock) {
|
|
haveFirstLetterStyle = HasFirstLetterStyle(containingBlock);
|
|
haveFirstLineStyle =
|
|
ShouldHaveFirstLineStyle(containingBlock->GetContent(),
|
|
containingBlock->GetStyleContext());
|
|
}
|
|
|
|
if (haveFirstLetterStyle) {
|
|
// Before we get going, remove the current letter frames
|
|
RemoveLetterFrames(state.mPresContext, state.mPresShell,
|
|
state.mFrameManager, containingBlock);
|
|
}
|
|
|
|
nsIAtom* frameType = parentFrame->GetType();
|
|
PRBool haveNoXBLChildren =
|
|
mDocument->BindingManager()->GetXBLChildNodesFor(aContainer) == nsnull;
|
|
FrameConstructionItemList items;
|
|
if (aFirstNewContent->GetPreviousSibling() &&
|
|
GetParentType(frameType) == eTypeBlock &&
|
|
haveNoXBLChildren) {
|
|
// If there's a text node in the normal content list just before the new
|
|
// items, and it has no frame, make a frame construction item for it. If it
|
|
// doesn't need a frame, ConstructFramesFromItemList below won't give it
|
|
// one. No need to do all this if our parent type is not block, though,
|
|
// since WipeContainingBlock already handles that situation.
|
|
//
|
|
// Because we're appending, we don't need to worry about any text
|
|
// after the appended content; there can only be XBL anonymous content
|
|
// (text in an XBL binding is not suppressed) or generated content
|
|
// (and bare text nodes are not generated). Native anonymous content
|
|
// generated by frames never participates in inline layout.
|
|
AddTextItemIfNeeded(state, parentFrame,
|
|
aFirstNewContent->GetPreviousSibling(), items);
|
|
}
|
|
for (nsIContent* child = aFirstNewContent;
|
|
child;
|
|
child = child->GetNextSibling()) {
|
|
AddFrameConstructionItems(state, child, PR_FALSE, parentFrame, items);
|
|
}
|
|
|
|
nsIFrame* prevSibling = ::FindAppendPrevSibling(parentFrame, parentAfterFrame);
|
|
|
|
// Perform special check for diddling around with the frames in
|
|
// a special inline frame.
|
|
// If we're appending before :after content, then we're not really
|
|
// appending, so let WipeContainingBlock know that.
|
|
LAYOUT_PHASE_TEMP_EXIT();
|
|
if (WipeContainingBlock(state, containingBlock, parentFrame, items,
|
|
PR_TRUE, prevSibling)) {
|
|
LAYOUT_PHASE_TEMP_REENTER();
|
|
return NS_OK;
|
|
}
|
|
LAYOUT_PHASE_TEMP_REENTER();
|
|
|
|
// If the parent is a block frame, and we're not in a special case
|
|
// where frames can be moved around, determine if the list is for the
|
|
// start or end of the block.
|
|
if (nsLayoutUtils::GetAsBlock(parentFrame) && !haveFirstLetterStyle &&
|
|
!haveFirstLineStyle && !parentSpecial) {
|
|
items.SetLineBoundaryAtStart(!prevSibling ||
|
|
!prevSibling->GetStyleDisplay()->IsInlineOutside() ||
|
|
prevSibling->GetType() == nsGkAtoms::brFrame);
|
|
// :after content can't be <br> so no need to check it
|
|
items.SetLineBoundaryAtEnd(!parentAfterFrame ||
|
|
!parentAfterFrame->GetStyleDisplay()->IsInlineOutside());
|
|
}
|
|
// To suppress whitespace-only text frames, we have to verify that
|
|
// our container's DOM child list matches its flattened tree child list.
|
|
// This is guaranteed to be true if GetXBLChildNodesFor() returns null.
|
|
items.SetParentHasNoXBLChildren(haveNoXBLChildren);
|
|
|
|
nsFrameItems frameItems;
|
|
ConstructFramesFromItemList(state, items, parentFrame, frameItems);
|
|
|
|
for (nsIContent* child = aFirstNewContent;
|
|
child;
|
|
child = child->GetNextSibling()) {
|
|
// Invalidate now instead of before the WipeContainingBlock call, just in
|
|
// case we do wipe; in that case we don't need to do this walk at all.
|
|
// XXXbz does that matter? Would it make more sense to save some virtual
|
|
// GetChildAt calls instead and do this during construction of our
|
|
// FrameConstructionItemList?
|
|
InvalidateCanvasIfNeeded(mPresShell, child);
|
|
}
|
|
|
|
// if the container is a table and a caption was appended, it needs to be put
|
|
// in the outer table frame's additional child list.
|
|
nsFrameItems captionItems;
|
|
if (nsGkAtoms::tableFrame == frameType) {
|
|
// Pull out the captions. Note that we don't want to do that as we go,
|
|
// because processing a single caption can add a whole bunch of things to
|
|
// the frame items due to pseudoframe processing. So we'd have to pull
|
|
// captions from a list anyway; might as well do that here.
|
|
// XXXbz this is no longer true; we could pull captions directly out of the
|
|
// FrameConstructionItemList now.
|
|
PullOutCaptionFrames(frameItems, captionItems);
|
|
}
|
|
|
|
if (haveFirstLineStyle && parentFrame == containingBlock) {
|
|
// It's possible that some of the new frames go into a
|
|
// first-line frame. Look at them and see...
|
|
AppendFirstLineFrames(state, containingBlock->GetContent(),
|
|
containingBlock, frameItems);
|
|
}
|
|
|
|
// Notify the parent frame passing it the list of new frames
|
|
// Append the flowed frames to the principal child list; captions
|
|
// need special treatment
|
|
if (captionItems.NotEmpty()) { // append the caption to the outer table
|
|
NS_ASSERTION(nsGkAtoms::tableFrame == frameType, "how did that happen?");
|
|
nsIFrame* outerTable = parentFrame->GetParent();
|
|
if (outerTable) {
|
|
state.mFrameManager->AppendFrames(outerTable, nsGkAtoms::captionList,
|
|
captionItems);
|
|
}
|
|
}
|
|
|
|
if (frameItems.NotEmpty()) { // append the in-flow kids
|
|
AppendFrames(state, parentFrame, frameItems, prevSibling);
|
|
}
|
|
|
|
// Recover first-letter frames
|
|
if (haveFirstLetterStyle) {
|
|
RecoverLetterFrames(containingBlock);
|
|
}
|
|
|
|
#ifdef DEBUG
|
|
if (gReallyNoisyContentUpdates) {
|
|
printf("nsCSSFrameConstructor::ContentAppended: resulting frame model:\n");
|
|
parentFrame->List(stdout, 0);
|
|
}
|
|
#endif
|
|
|
|
#ifdef ACCESSIBILITY
|
|
nsAccessibilityService* accService = nsIPresShell::AccService();
|
|
if (accService) {
|
|
accService->ContentRangeInserted(mPresShell, aContainer,
|
|
aFirstNewContent, nsnull);
|
|
}
|
|
#endif
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
#ifdef MOZ_XUL
|
|
|
|
enum content_operation
|
|
{
|
|
CONTENT_INSERTED,
|
|
CONTENT_REMOVED
|
|
};
|
|
|
|
// Helper function to lookup the listbox body frame and send a notification
|
|
// for insertion or removal of content
|
|
static
|
|
PRBool NotifyListBoxBody(nsPresContext* aPresContext,
|
|
nsIContent* aContainer,
|
|
nsIContent* aChild,
|
|
// Only used for the removed notification
|
|
nsIContent* aOldNextSibling,
|
|
nsIDocument* aDocument,
|
|
nsIFrame* aChildFrame,
|
|
content_operation aOperation)
|
|
{
|
|
nsListBoxBodyFrame* listBoxBodyFrame =
|
|
MaybeGetListBoxBodyFrame(aContainer, aChild);
|
|
if (listBoxBodyFrame) {
|
|
if (aOperation == CONTENT_REMOVED) {
|
|
// Except if we have an aChildFrame and its parent is not the right
|
|
// thing, then we don't do this. Pseudo frames are so much fun....
|
|
if (!aChildFrame || aChildFrame->GetParent() == listBoxBodyFrame) {
|
|
listBoxBodyFrame->OnContentRemoved(aPresContext, aContainer,
|
|
aChildFrame, aOldNextSibling);
|
|
return PR_TRUE;
|
|
}
|
|
} else {
|
|
listBoxBodyFrame->OnContentInserted(aPresContext, aChild);
|
|
return PR_TRUE;
|
|
}
|
|
}
|
|
|
|
return PR_FALSE;
|
|
}
|
|
#endif // MOZ_XUL
|
|
|
|
nsresult
|
|
nsCSSFrameConstructor::ContentInserted(nsIContent* aContainer,
|
|
nsIContent* aChild,
|
|
nsILayoutHistoryState* aFrameState,
|
|
PRBool aAllowLazyConstruction)
|
|
{
|
|
return ContentRangeInserted(aContainer,
|
|
aChild,
|
|
aChild->GetNextSibling(),
|
|
aFrameState,
|
|
aAllowLazyConstruction);
|
|
}
|
|
|
|
// ContentRangeInserted handles creating frames for a range of nodes that
|
|
// aren't at the end of their childlist. ContentRangeInserted isn't a real
|
|
// content notification, but rather it handles regular ContentInserted calls
|
|
// for a single node as well as the lazy construction of frames for a range of
|
|
// nodes when called from CreateNeededFrames. For a range of nodes to be
|
|
// suitable to have its frames constructed all at once they must meet the same
|
|
// conditions that ContentAppended imposes (GetRangeInsertionPoint checks
|
|
// these), plus more. Namely when finding the insertion prevsibling we must not
|
|
// need to consult something specific to any one node in the range, so that the
|
|
// insertion prevsibling would be the same for each node in the range. So we
|
|
// pass the first node in the range to GetInsertionPrevSibling, and if
|
|
// IsValidSibling (the only place GetInsertionPrevSibling might look at the
|
|
// passed in node itself) needs to resolve style on the node we record this and
|
|
// return that this range needs to be split up and inserted separately. Table
|
|
// captions need extra attention as we need to determine where to insert them
|
|
// in the caption list, while skipping any nodes in the range being inserted
|
|
// (because when we treat the caption frames the other nodes have had their
|
|
// frames constructed but not yet inserted into the frame tree).
|
|
nsresult
|
|
nsCSSFrameConstructor::ContentRangeInserted(nsIContent* aContainer,
|
|
nsIContent* aStartChild,
|
|
nsIContent* aEndChild,
|
|
nsILayoutHistoryState* aFrameState,
|
|
PRBool aAllowLazyConstruction)
|
|
{
|
|
AUTO_LAYOUT_PHASE_ENTRY_POINT(mPresShell->GetPresContext(), FrameC);
|
|
NS_PRECONDITION(mUpdateCount != 0,
|
|
"Should be in an update while creating frames");
|
|
|
|
NS_PRECONDITION(aStartChild, "must always pass a child");
|
|
|
|
// XXXldb Do we need to re-resolve style to handle the CSS2 + combinator and
|
|
// the :empty pseudo-class?
|
|
#ifdef DEBUG
|
|
if (gNoisyContentUpdates) {
|
|
printf("nsCSSFrameConstructor::ContentRangeInserted container=%p "
|
|
"start-child=%p end-child=%p lazy=%d\n",
|
|
static_cast<void*>(aContainer),
|
|
static_cast<void*>(aStartChild), static_cast<void*>(aEndChild),
|
|
aAllowLazyConstruction);
|
|
if (gReallyNoisyContentUpdates) {
|
|
if (aContainer) {
|
|
aContainer->List(stdout,0);
|
|
} else {
|
|
aStartChild->List(stdout, 0);
|
|
}
|
|
}
|
|
}
|
|
#endif
|
|
|
|
#ifdef DEBUG
|
|
for (nsIContent* child = aStartChild;
|
|
child != aEndChild;
|
|
child = child->GetNextSibling()) {
|
|
// XXX the GetContent() != child check is needed due to bug 135040.
|
|
// Remove it once that's fixed.
|
|
NS_ASSERTION(!child->GetPrimaryFrame() ||
|
|
child->GetPrimaryFrame()->GetContent() != child,
|
|
"asked to construct a frame for a node that already has a frame");
|
|
}
|
|
#endif
|
|
|
|
nsresult rv = NS_OK;
|
|
|
|
PRBool isSingleInsert = (aStartChild->GetNextSibling() == aEndChild);
|
|
NS_ASSERTION(isSingleInsert || !aAllowLazyConstruction,
|
|
"range insert shouldn't be lazy");
|
|
NS_ASSERTION(isSingleInsert || aEndChild,
|
|
"range should not include all nodes after aStartChild");
|
|
|
|
#ifdef MOZ_XUL
|
|
if (aContainer && IsXULListBox(aContainer)) {
|
|
if (isSingleInsert) {
|
|
if (NotifyListBoxBody(mPresShell->GetPresContext(), aContainer,
|
|
// The insert case in NotifyListBoxBody
|
|
// doesn't use "old next sibling".
|
|
aStartChild, nsnull,
|
|
mDocument, nsnull, CONTENT_INSERTED)) {
|
|
return NS_OK;
|
|
}
|
|
} else {
|
|
// We don't handle a range insert to a listbox parent, issue single
|
|
// ContertInserted calls for each node inserted.
|
|
LAYOUT_PHASE_TEMP_EXIT();
|
|
IssueSingleInsertNofications(aContainer, aStartChild, aEndChild,
|
|
aAllowLazyConstruction);
|
|
LAYOUT_PHASE_TEMP_REENTER();
|
|
return NS_OK;
|
|
}
|
|
}
|
|
#endif // MOZ_XUL
|
|
|
|
// If we have a null parent, then this must be the document element being
|
|
// inserted, or some other child of the document in the DOM (might be a PI,
|
|
// say).
|
|
if (! aContainer) {
|
|
NS_ASSERTION(isSingleInsert,
|
|
"root node insertion should be a single insertion");
|
|
Element *docElement = mDocument->GetRootElement();
|
|
|
|
if (aStartChild != docElement) {
|
|
// Not the root element; just bail out
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_PRECONDITION(nsnull == mRootElementFrame,
|
|
"root element frame already created");
|
|
|
|
// Create frames for the document element and its child elements
|
|
nsIFrame* docElementFrame;
|
|
rv = ConstructDocElementFrame(docElement, aFrameState, &docElementFrame);
|
|
|
|
if (NS_SUCCEEDED(rv) && docElementFrame) {
|
|
InvalidateCanvasIfNeeded(mPresShell, aStartChild);
|
|
#ifdef DEBUG
|
|
if (gReallyNoisyContentUpdates) {
|
|
printf("nsCSSFrameConstructor::ContentRangeInserted: resulting frame "
|
|
"model:\n");
|
|
mFixedContainingBlock->List(stdout, 0);
|
|
}
|
|
#endif
|
|
}
|
|
|
|
#ifdef ACCESSIBILITY
|
|
nsAccessibilityService* accService = nsIPresShell::AccService();
|
|
if (accService) {
|
|
accService->ContentRangeInserted(mPresShell, aContainer,
|
|
aStartChild, aEndChild);
|
|
}
|
|
#endif
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
// Otherwise, we've got parent content. Find its frame.
|
|
nsIFrame* parentFrame = GetFrameFor(aContainer);
|
|
if (! parentFrame)
|
|
return NS_OK;
|
|
|
|
if (aAllowLazyConstruction &&
|
|
MaybeConstructLazily(CONTENTINSERT, aContainer, aStartChild)) {
|
|
return NS_OK;
|
|
}
|
|
|
|
if (isSingleInsert) {
|
|
// See if we have an XBL insertion point. If so, then that's our
|
|
// real parent frame; if not, then the frame hasn't been built yet
|
|
// and we just bail.
|
|
nsIFrame* insertionPoint;
|
|
GetInsertionPoint(parentFrame, aStartChild, &insertionPoint);
|
|
if (! insertionPoint)
|
|
return NS_OK; // Don't build the frames.
|
|
|
|
parentFrame = insertionPoint;
|
|
} else {
|
|
// Get our insertion point. If we need to issue single ContentInserted's
|
|
// GetRangeInsertionPoint will take care of that for us.
|
|
LAYOUT_PHASE_TEMP_EXIT();
|
|
parentFrame = GetRangeInsertionPoint(aContainer, parentFrame,
|
|
aStartChild, aEndChild,
|
|
aAllowLazyConstruction);
|
|
LAYOUT_PHASE_TEMP_REENTER();
|
|
if (!parentFrame) {
|
|
return NS_OK;
|
|
}
|
|
}
|
|
|
|
PRBool isAppend, isRangeInsertSafe;
|
|
nsIFrame* prevSibling =
|
|
GetInsertionPrevSibling(parentFrame, aContainer, aStartChild,
|
|
&isAppend, &isRangeInsertSafe);
|
|
|
|
// check if range insert is safe
|
|
if (!isSingleInsert && !isRangeInsertSafe) {
|
|
// must fall back to a single ContertInserted for each child in the range
|
|
LAYOUT_PHASE_TEMP_EXIT();
|
|
IssueSingleInsertNofications(aContainer, aStartChild, aEndChild,
|
|
aAllowLazyConstruction);
|
|
LAYOUT_PHASE_TEMP_REENTER();
|
|
return NS_OK;
|
|
}
|
|
|
|
nsIContent* container = parentFrame->GetContent();
|
|
|
|
nsIAtom* frameType = parentFrame->GetType();
|
|
LAYOUT_PHASE_TEMP_EXIT();
|
|
if (MaybeRecreateForFrameset(parentFrame, aStartChild, aEndChild)) {
|
|
LAYOUT_PHASE_TEMP_REENTER();
|
|
return NS_OK;
|
|
}
|
|
LAYOUT_PHASE_TEMP_REENTER();
|
|
|
|
// We should only get here with fieldsets when doing a single insert, because
|
|
// fieldsets have multiple insertion points.
|
|
NS_ASSERTION(isSingleInsert || frameType != nsGkAtoms::fieldSetFrame,
|
|
"Unexpected parent");
|
|
if (frameType == nsGkAtoms::fieldSetFrame &&
|
|
aStartChild->Tag() == nsGkAtoms::legend) {
|
|
// Just reframe the parent, since figuring out whether this
|
|
// should be the new legend and then handling it is too complex.
|
|
// We could do a little better here --- check if the fieldset already
|
|
// has a legend which occurs earlier in its child list than this node,
|
|
// and if so, proceed. But we'd have to extend nsFieldSetFrame
|
|
// to locate this legend in the inserted frames and extract it.
|
|
LAYOUT_PHASE_TEMP_EXIT();
|
|
nsresult rv = RecreateFramesForContent(parentFrame->GetContent(), PR_FALSE);
|
|
LAYOUT_PHASE_TEMP_REENTER();
|
|
return rv;
|
|
}
|
|
|
|
// Don't construct kids of leaves
|
|
if (parentFrame->IsLeaf()) {
|
|
// Clear lazy bits so we don't try to construct again.
|
|
ClearLazyBits(aStartChild, aEndChild);
|
|
return NS_OK;
|
|
}
|
|
|
|
if (parentFrame->IsFrameOfType(nsIFrame::eMathML)) {
|
|
LAYOUT_PHASE_TEMP_EXIT();
|
|
nsresult rv = RecreateFramesForContent(parentFrame->GetContent(), PR_FALSE);
|
|
LAYOUT_PHASE_TEMP_REENTER();
|
|
return rv;
|
|
}
|
|
|
|
nsFrameConstructorState state(mPresShell, mFixedContainingBlock,
|
|
GetAbsoluteContainingBlock(parentFrame),
|
|
GetFloatContainingBlock(parentFrame),
|
|
aFrameState);
|
|
|
|
|
|
// Recover state for the containing block - we need to know if
|
|
// it has :first-letter or :first-line style applied to it. The
|
|
// reason we care is that the internal structure in these cases
|
|
// is not the normal structure and requires custom updating
|
|
// logic.
|
|
nsIFrame* containingBlock = state.mFloatedItems.containingBlock;
|
|
PRBool haveFirstLetterStyle = PR_FALSE;
|
|
PRBool haveFirstLineStyle = PR_FALSE;
|
|
|
|
// In order to shave off some cycles, we only dig up the
|
|
// containing block haveFirst* flags if the parent frame where
|
|
// the insertion/append is occurring is an inline or block
|
|
// container. For other types of containers this isn't relevant.
|
|
const nsStyleDisplay* parentDisplay = parentFrame->GetStyleDisplay();
|
|
|
|
// Examine the parentFrame where the insertion is taking
|
|
// place. If it's a certain kind of container then some special
|
|
// processing is done.
|
|
if ((NS_STYLE_DISPLAY_BLOCK == parentDisplay->mDisplay) ||
|
|
(NS_STYLE_DISPLAY_LIST_ITEM == parentDisplay->mDisplay) ||
|
|
(NS_STYLE_DISPLAY_INLINE == parentDisplay->mDisplay) ||
|
|
(NS_STYLE_DISPLAY_INLINE_BLOCK == parentDisplay->mDisplay)) {
|
|
// Recover the special style flags for the containing block
|
|
if (containingBlock) {
|
|
haveFirstLetterStyle = HasFirstLetterStyle(containingBlock);
|
|
haveFirstLineStyle =
|
|
ShouldHaveFirstLineStyle(containingBlock->GetContent(),
|
|
containingBlock->GetStyleContext());
|
|
}
|
|
|
|
if (haveFirstLetterStyle) {
|
|
// If our current parentFrame is a Letter frame, use its parent as our
|
|
// new parent hint
|
|
if (parentFrame->GetType() == nsGkAtoms::letterFrame) {
|
|
// If parentFrame is out of flow, then we actually want the parent of
|
|
// the placeholder frame.
|
|
if (parentFrame->GetStateBits() & NS_FRAME_OUT_OF_FLOW) {
|
|
nsPlaceholderFrame* placeholderFrame =
|
|
state.mFrameManager->GetPlaceholderFrameFor(parentFrame);
|
|
NS_ASSERTION(placeholderFrame, "No placeholder for out-of-flow?");
|
|
parentFrame = placeholderFrame->GetParent();
|
|
} else {
|
|
parentFrame = parentFrame->GetParent();
|
|
}
|
|
}
|
|
|
|
// Remove the old letter frames before doing the insertion
|
|
RemoveLetterFrames(state.mPresContext, mPresShell,
|
|
state.mFrameManager,
|
|
state.mFloatedItems.containingBlock);
|
|
|
|
// Removing the letterframes messes around with the frame tree, removing
|
|
// and creating frames. We need to reget our prevsibling, parent frame,
|
|
// etc.
|
|
prevSibling = GetInsertionPrevSibling(parentFrame, aContainer,
|
|
aStartChild, &isAppend,
|
|
&isRangeInsertSafe);
|
|
|
|
// Need check whether a range insert is still safe.
|
|
if (!isSingleInsert && !isRangeInsertSafe) {
|
|
// Need to recover the letter frames first.
|
|
RecoverLetterFrames(state.mFloatedItems.containingBlock);
|
|
|
|
// must fall back to a single ContertInserted for each child in the range
|
|
LAYOUT_PHASE_TEMP_EXIT();
|
|
IssueSingleInsertNofications(aContainer, aStartChild, aEndChild,
|
|
aAllowLazyConstruction);
|
|
LAYOUT_PHASE_TEMP_REENTER();
|
|
return NS_OK;
|
|
}
|
|
|
|
container = parentFrame->GetContent();
|
|
frameType = parentFrame->GetType();
|
|
}
|
|
}
|
|
|
|
if (!prevSibling) {
|
|
// We're inserting the new frames as the first child. See if the
|
|
// parent has a :before pseudo-element
|
|
nsIFrame* firstChild = parentFrame->GetFirstChild(nsnull);
|
|
|
|
if (firstChild &&
|
|
nsLayoutUtils::IsGeneratedContentFor(container, firstChild,
|
|
nsCSSPseudoElements::before)) {
|
|
// Insert the new frames after the last continuation of the :before
|
|
prevSibling = firstChild->GetTailContinuation();
|
|
parentFrame = prevSibling->GetParent()->GetContentInsertionFrame();
|
|
// Don't change isAppend here; we'll can call AppendFrames as needed, and
|
|
// the change to our prevSibling doesn't affect that.
|
|
}
|
|
}
|
|
|
|
FrameConstructionItemList items;
|
|
ParentType parentType = GetParentType(frameType);
|
|
PRBool haveNoXBLChildren =
|
|
mDocument->BindingManager()->GetXBLChildNodesFor(aContainer) == nsnull;
|
|
if (aStartChild->GetPreviousSibling() &&
|
|
parentType == eTypeBlock && haveNoXBLChildren) {
|
|
// If there's a text node in the normal content list just before the
|
|
// new nodes, and it has no frame, make a frame construction item for
|
|
// it, because it might need a frame now. No need to do this if our
|
|
// parent type is not block, though, since WipeContainingBlock
|
|
// already handles that sitation.
|
|
AddTextItemIfNeeded(state, parentFrame, aStartChild->GetPreviousSibling(),
|
|
items);
|
|
}
|
|
|
|
if (isSingleInsert) {
|
|
AddFrameConstructionItems(state, aStartChild,
|
|
aStartChild->IsRootOfAnonymousSubtree(),
|
|
parentFrame, items);
|
|
} else {
|
|
for (nsIContent* child = aStartChild;
|
|
child != aEndChild;
|
|
child = child->GetNextSibling()){
|
|
AddFrameConstructionItems(state, child, PR_FALSE, parentFrame, items);
|
|
}
|
|
}
|
|
|
|
if (aEndChild && parentType == eTypeBlock && haveNoXBLChildren) {
|
|
// If there's a text node in the normal content list just after the
|
|
// new nodes, and it has no frame, make a frame construction item for
|
|
// it, because it might need a frame now. No need to do this if our
|
|
// parent type is not block, though, since WipeContainingBlock
|
|
// already handles that sitation.
|
|
AddTextItemIfNeeded(state, parentFrame, aEndChild, items);
|
|
}
|
|
|
|
// Perform special check for diddling around with the frames in
|
|
// a special inline frame.
|
|
// If we're appending before :after content, then we're not really
|
|
// appending, so let WipeContainingBlock know that.
|
|
LAYOUT_PHASE_TEMP_EXIT();
|
|
if (WipeContainingBlock(state, containingBlock, parentFrame, items,
|
|
isAppend, prevSibling)) {
|
|
LAYOUT_PHASE_TEMP_REENTER();
|
|
return NS_OK;
|
|
}
|
|
LAYOUT_PHASE_TEMP_REENTER();
|
|
|
|
// If the container is a table and a caption will be appended, it needs to be
|
|
// put in the outer table frame's additional child list.
|
|
// We make no attempt here to set flags to indicate whether the list
|
|
// will be at the start or end of a block. It doesn't seem worthwhile.
|
|
nsFrameItems frameItems, captionItems;
|
|
ConstructFramesFromItemList(state, items, parentFrame, frameItems);
|
|
|
|
if (frameItems.NotEmpty()) {
|
|
for (nsIContent* child = aStartChild;
|
|
child != aEndChild;
|
|
child = child->GetNextSibling()){
|
|
InvalidateCanvasIfNeeded(mPresShell, child);
|
|
}
|
|
|
|
if (nsGkAtoms::tableFrame == frameType ||
|
|
nsGkAtoms::tableOuterFrame == frameType) {
|
|
PullOutCaptionFrames(frameItems, captionItems);
|
|
}
|
|
}
|
|
|
|
// If the parent of our current prevSibling is different from the frame we'll
|
|
// actually use as the parent, then the calculated insertion point is now
|
|
// invalid and as it is unknown where to insert correctly we append instead
|
|
// (bug 341858).
|
|
// This can affect our prevSibling and isAppend, but should not have any
|
|
// effect on the WipeContainingBlock above, since this should only happen
|
|
// when neither parent is a special frame and should not affect whitespace
|
|
// handling inside table-related frames (and in fact, can only happen when
|
|
// one of the parents is an outer table and one is an inner table or when the
|
|
// parent is a fieldset or fieldset content frame). So it won't affect the
|
|
// {ib} or XUL box cases in WipeContainingBlock(), and the table pseudo
|
|
// handling will only be affected by us maybe thinking we're not inserting
|
|
// at the beginning, whereas we really are. That would have made us reframe
|
|
// unnecessarily, but that's ok.
|
|
// XXXbz we should push our frame construction item code up higher, so we
|
|
// know what our items are by the time we start figuring out previous
|
|
// siblings
|
|
if (prevSibling && frameItems.NotEmpty() &&
|
|
frameItems.FirstChild()->GetParent() != prevSibling->GetParent()) {
|
|
#ifdef DEBUG
|
|
nsIFrame* frame1 = frameItems.FirstChild()->GetParent();
|
|
nsIFrame* frame2 = prevSibling->GetParent();
|
|
NS_ASSERTION(!IsFrameSpecial(frame1) && !IsFrameSpecial(frame2),
|
|
"Neither should be special");
|
|
NS_ASSERTION((frame1->GetType() == nsGkAtoms::tableFrame &&
|
|
frame2->GetType() == nsGkAtoms::tableOuterFrame) ||
|
|
(frame1->GetType() == nsGkAtoms::tableOuterFrame &&
|
|
frame2->GetType() == nsGkAtoms::tableFrame) ||
|
|
frame1->GetType() == nsGkAtoms::fieldSetFrame ||
|
|
(frame1->GetParent() &&
|
|
frame1->GetParent()->GetType() == nsGkAtoms::fieldSetFrame),
|
|
"Unexpected frame types");
|
|
#endif
|
|
isAppend = PR_TRUE;
|
|
nsIFrame* appendAfterFrame;
|
|
parentFrame =
|
|
::AdjustAppendParentForAfterContent(mPresShell->GetPresContext(),
|
|
container,
|
|
frameItems.FirstChild()->GetParent(),
|
|
&appendAfterFrame);
|
|
prevSibling = ::FindAppendPrevSibling(parentFrame, appendAfterFrame);
|
|
}
|
|
|
|
if (haveFirstLineStyle && parentFrame == containingBlock) {
|
|
// It's possible that the new frame goes into a first-line
|
|
// frame. Look at it and see...
|
|
if (isAppend) {
|
|
// Use append logic when appending
|
|
AppendFirstLineFrames(state, containingBlock->GetContent(),
|
|
containingBlock, frameItems);
|
|
}
|
|
else {
|
|
// Use more complicated insert logic when inserting
|
|
// XXXbz this method is a no-op, so it's easy for the args being passed
|
|
// here to make no sense without anyone noticing... If it ever stops
|
|
// being a no-op, vet them carefully!
|
|
InsertFirstLineFrames(state, container, containingBlock, &parentFrame,
|
|
prevSibling, frameItems);
|
|
}
|
|
}
|
|
|
|
// We might have captions; put them into the caption list of the
|
|
// outer table frame.
|
|
if (captionItems.NotEmpty()) {
|
|
NS_ASSERTION(nsGkAtoms::tableFrame == frameType ||
|
|
nsGkAtoms::tableOuterFrame == frameType,
|
|
"parent for caption is not table?");
|
|
// We need to determine where to put the caption items; start with the
|
|
// the parent frame that has already been determined and get the insertion
|
|
// prevsibling of the first caption item.
|
|
nsIFrame* captionParent = parentFrame;
|
|
PRBool captionIsAppend;
|
|
nsIFrame* captionPrevSibling = nsnull;
|
|
|
|
// aIsRangeInsertSafe is ignored on purpose because it is irrelevant here.
|
|
PRBool ignored;
|
|
if (isSingleInsert) {
|
|
captionPrevSibling =
|
|
GetInsertionPrevSibling(captionParent, aContainer, aStartChild,
|
|
&captionIsAppend, &ignored);
|
|
} else {
|
|
nsIContent* firstCaption = captionItems.FirstChild()->GetContent();
|
|
// It is very important here that we skip the children in
|
|
// [aStartChild,aEndChild) when looking for a
|
|
// prevsibling.
|
|
captionPrevSibling =
|
|
GetInsertionPrevSibling(captionParent, aContainer, firstCaption,
|
|
&captionIsAppend, &ignored,
|
|
aStartChild, aEndChild);
|
|
}
|
|
|
|
nsIFrame* outerTable = nsnull;
|
|
if (GetCaptionAdjustedParent(captionParent, captionItems.FirstChild(),
|
|
&outerTable)) {
|
|
// If the parent is not an outer table frame we will try to add frames
|
|
// to a named child list that the parent does not honour and the frames
|
|
// will get lost
|
|
NS_ASSERTION(nsGkAtoms::tableOuterFrame == outerTable->GetType(),
|
|
"Pseudo frame construction failure; "
|
|
"a caption can be only a child of an outer table frame");
|
|
|
|
// If the parent of our current prevSibling is different from the frame
|
|
// we'll actually use as the parent, then the calculated insertion
|
|
// point is now invalid (bug 341382).
|
|
if (captionPrevSibling &&
|
|
captionPrevSibling->GetParent() != outerTable) {
|
|
captionPrevSibling = nsnull;
|
|
}
|
|
if (captionIsAppend) {
|
|
state.mFrameManager->AppendFrames(outerTable, nsGkAtoms::captionList,
|
|
captionItems);
|
|
} else {
|
|
state.mFrameManager->InsertFrames(outerTable, nsGkAtoms::captionList,
|
|
captionPrevSibling, captionItems);
|
|
}
|
|
}
|
|
}
|
|
|
|
if (frameItems.NotEmpty()) {
|
|
// Notify the parent frame
|
|
if (isAppend) {
|
|
AppendFrames(state, parentFrame, frameItems, prevSibling);
|
|
} else {
|
|
state.mFrameManager->InsertFrames(parentFrame, nsnull, prevSibling,
|
|
frameItems);
|
|
}
|
|
}
|
|
|
|
if (haveFirstLetterStyle) {
|
|
// Recover the letter frames for the containing block when
|
|
// it has first-letter style.
|
|
RecoverLetterFrames(state.mFloatedItems.containingBlock);
|
|
}
|
|
|
|
#ifdef DEBUG
|
|
if (gReallyNoisyContentUpdates && parentFrame) {
|
|
printf("nsCSSFrameConstructor::ContentRangeInserted: resulting frame model:\n");
|
|
parentFrame->List(stdout, 0);
|
|
}
|
|
#endif
|
|
|
|
#ifdef ACCESSIBILITY
|
|
nsAccessibilityService* accService = nsIPresShell::AccService();
|
|
if (accService) {
|
|
accService->ContentRangeInserted(mPresShell, aContainer,
|
|
aStartChild, aEndChild);
|
|
}
|
|
#endif
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
nsresult
|
|
nsCSSFrameConstructor::ContentRemoved(nsIContent* aContainer,
|
|
nsIContent* aChild,
|
|
nsIContent* aOldNextSibling,
|
|
RemoveFlags aFlags,
|
|
PRBool* aDidReconstruct)
|
|
{
|
|
AUTO_LAYOUT_PHASE_ENTRY_POINT(mPresShell->GetPresContext(), FrameC);
|
|
NS_PRECONDITION(mUpdateCount != 0,
|
|
"Should be in an update while destroying frames");
|
|
|
|
*aDidReconstruct = PR_FALSE;
|
|
|
|
// XXXldb Do we need to re-resolve style to handle the CSS2 + combinator and
|
|
// the :empty pseudo-class?
|
|
|
|
#ifdef DEBUG
|
|
if (gNoisyContentUpdates) {
|
|
printf("nsCSSFrameConstructor::ContentRemoved container=%p child=%p "
|
|
"old-next-sibling=%p\n",
|
|
static_cast<void*>(aContainer),
|
|
static_cast<void*>(aChild),
|
|
static_cast<void*>(aOldNextSibling));
|
|
if (gReallyNoisyContentUpdates) {
|
|
aContainer->List(stdout, 0);
|
|
}
|
|
}
|
|
#endif
|
|
|
|
nsFrameManager *frameManager = mPresShell->FrameManager();
|
|
nsPresContext *presContext = mPresShell->GetPresContext();
|
|
nsresult rv = NS_OK;
|
|
|
|
// Find the child frame that maps the content
|
|
nsIFrame* childFrame = aChild->GetPrimaryFrame();
|
|
|
|
if (!childFrame || childFrame->GetContent() != aChild) {
|
|
// XXXbz the GetContent() != aChild check is needed due to bug 135040.
|
|
// Remove it once that's fixed.
|
|
frameManager->ClearUndisplayedContentIn(aChild, aContainer);
|
|
}
|
|
|
|
#ifdef MOZ_XUL
|
|
if (NotifyListBoxBody(presContext, aContainer, aChild, aOldNextSibling,
|
|
mDocument, childFrame, CONTENT_REMOVED))
|
|
return NS_OK;
|
|
|
|
#endif // MOZ_XUL
|
|
|
|
// If we're removing the root, then make sure to remove things starting at
|
|
// the viewport's child instead of the primary frame (which might even be
|
|
// null if the root had an XBL binding or display:none, even though the
|
|
// frames above it got created). We do the adjustment after the childFrame
|
|
// check above, because we do want to clear any undisplayed content we might
|
|
// have for the root. Detecting removal of a root is a little exciting; in
|
|
// particular, having a null aContainer is necessary but NOT sufficient. Due
|
|
// to how we process reframes, the content node might not even be in our
|
|
// document by now. So explicitly check whether the viewport's first kid's
|
|
// content node is aChild.
|
|
PRBool isRoot = PR_FALSE;
|
|
if (!aContainer) {
|
|
nsIFrame* viewport = frameManager->GetRootFrame();
|
|
if (viewport) {
|
|
nsIFrame* firstChild = viewport->GetFirstChild(nsnull);
|
|
if (firstChild && firstChild->GetContent() == aChild) {
|
|
isRoot = PR_TRUE;
|
|
childFrame = firstChild;
|
|
NS_ASSERTION(!childFrame->GetNextSibling(), "How did that happen?");
|
|
}
|
|
}
|
|
}
|
|
|
|
if (childFrame) {
|
|
InvalidateCanvasIfNeeded(mPresShell, aChild);
|
|
|
|
// See whether we need to remove more than just childFrame
|
|
LAYOUT_PHASE_TEMP_EXIT();
|
|
if (MaybeRecreateContainerForFrameRemoval(childFrame, &rv)) {
|
|
LAYOUT_PHASE_TEMP_REENTER();
|
|
*aDidReconstruct = PR_TRUE;
|
|
return rv;
|
|
}
|
|
LAYOUT_PHASE_TEMP_REENTER();
|
|
|
|
// Get the childFrame's parent frame
|
|
nsIFrame* parentFrame = childFrame->GetParent();
|
|
nsIAtom* parentType = parentFrame->GetType();
|
|
|
|
if (parentType == nsGkAtoms::frameSetFrame &&
|
|
IsSpecialFramesetChild(aChild)) {
|
|
// Just reframe the parent, since framesets are weird like that.
|
|
*aDidReconstruct = PR_TRUE;
|
|
LAYOUT_PHASE_TEMP_EXIT();
|
|
nsresult rv = RecreateFramesForContent(parentFrame->GetContent(), PR_FALSE);
|
|
LAYOUT_PHASE_TEMP_REENTER();
|
|
return rv;
|
|
}
|
|
|
|
// If we're a child of MathML, then we should reframe the MathML content.
|
|
// If we're non-MathML, then we would be wrapped in a block so we need to
|
|
// check our grandparent in that case.
|
|
nsIFrame* possibleMathMLAncestor = parentType == nsGkAtoms::blockFrame ?
|
|
parentFrame->GetParent() : parentFrame;
|
|
if (possibleMathMLAncestor->IsFrameOfType(nsIFrame::eMathML)) {
|
|
*aDidReconstruct = PR_TRUE;
|
|
LAYOUT_PHASE_TEMP_EXIT();
|
|
nsresult rv = RecreateFramesForContent(possibleMathMLAncestor->GetContent(), PR_FALSE);
|
|
LAYOUT_PHASE_TEMP_REENTER();
|
|
return rv;
|
|
}
|
|
|
|
// Undo XUL wrapping if it's no longer needed.
|
|
// (If we're in the XUL block-wrapping situation, parentFrame is the
|
|
// wrapper frame.)
|
|
nsIFrame* grandparentFrame = parentFrame->GetParent();
|
|
if (grandparentFrame && grandparentFrame->IsBoxFrame() &&
|
|
(grandparentFrame->GetStateBits() & NS_STATE_BOX_WRAPS_KIDS_IN_BLOCK) &&
|
|
// check if this frame is the only one needing wrapping
|
|
aChild == AnyKidsNeedBlockParent(parentFrame->GetFirstChild(nsnull)) &&
|
|
!AnyKidsNeedBlockParent(childFrame->GetNextSibling())) {
|
|
*aDidReconstruct = PR_TRUE;
|
|
LAYOUT_PHASE_TEMP_EXIT();
|
|
nsresult rv = RecreateFramesForContent(grandparentFrame->GetContent(), PR_TRUE);
|
|
LAYOUT_PHASE_TEMP_REENTER();
|
|
return rv;
|
|
}
|
|
|
|
#ifdef ACCESSIBILITY
|
|
nsAccessibilityService* accService = nsIPresShell::AccService();
|
|
if (accService) {
|
|
accService->ContentRemoved(mPresShell, aContainer, aChild);
|
|
}
|
|
#endif
|
|
|
|
// Examine the containing-block for the removed content and see if
|
|
// :first-letter style applies.
|
|
nsIFrame* inflowChild = childFrame;
|
|
if (childFrame->GetStateBits() & NS_FRAME_OUT_OF_FLOW) {
|
|
inflowChild = frameManager->GetPlaceholderFrameFor(childFrame);
|
|
NS_ASSERTION(inflowChild, "No placeholder for out-of-flow?");
|
|
}
|
|
nsIFrame* containingBlock =
|
|
GetFloatContainingBlock(inflowChild->GetParent());
|
|
PRBool haveFLS = containingBlock && HasFirstLetterStyle(containingBlock);
|
|
if (haveFLS) {
|
|
// Trap out to special routine that handles adjusting a blocks
|
|
// frame tree when first-letter style is present.
|
|
#ifdef NOISY_FIRST_LETTER
|
|
printf("ContentRemoved: containingBlock=");
|
|
nsFrame::ListTag(stdout, containingBlock);
|
|
printf(" parentFrame=");
|
|
nsFrame::ListTag(stdout, parentFrame);
|
|
printf(" childFrame=");
|
|
nsFrame::ListTag(stdout, childFrame);
|
|
printf("\n");
|
|
#endif
|
|
|
|
// First update the containing blocks structure by removing the
|
|
// existing letter frames. This makes the subsequent logic
|
|
// simpler.
|
|
RemoveLetterFrames(presContext, mPresShell, frameManager,
|
|
containingBlock);
|
|
|
|
// Recover childFrame and parentFrame
|
|
childFrame = aChild->GetPrimaryFrame();
|
|
if (!childFrame || childFrame->GetContent() != aChild) {
|
|
// XXXbz the GetContent() != aChild check is needed due to bug 135040.
|
|
// Remove it once that's fixed.
|
|
frameManager->ClearUndisplayedContentIn(aChild, aContainer);
|
|
return NS_OK;
|
|
}
|
|
parentFrame = childFrame->GetParent();
|
|
parentType = parentFrame->GetType();
|
|
|
|
#ifdef NOISY_FIRST_LETTER
|
|
printf(" ==> revised parentFrame=");
|
|
nsFrame::ListTag(stdout, parentFrame);
|
|
printf(" childFrame=");
|
|
nsFrame::ListTag(stdout, childFrame);
|
|
printf("\n");
|
|
#endif
|
|
}
|
|
|
|
#ifdef DEBUG
|
|
if (gReallyNoisyContentUpdates) {
|
|
printf("nsCSSFrameConstructor::ContentRemoved: childFrame=");
|
|
nsFrame::ListTag(stdout, childFrame);
|
|
putchar('\n');
|
|
parentFrame->List(stdout, 0);
|
|
}
|
|
#endif
|
|
|
|
|
|
// Notify the parent frame that it should delete the frame
|
|
if (childFrame->GetStateBits() & NS_FRAME_OUT_OF_FLOW) {
|
|
childFrame = frameManager->GetPlaceholderFrameFor(childFrame);
|
|
NS_ASSERTION(childFrame, "Missing placeholder frame for out of flow.");
|
|
parentFrame = childFrame->GetParent();
|
|
}
|
|
rv = frameManager->RemoveFrame(nsLayoutUtils::GetChildListNameFor(childFrame),
|
|
childFrame);
|
|
//XXXfr NS_ENSURE_SUCCESS(rv, rv) ?
|
|
|
|
if (isRoot) {
|
|
mRootElementFrame = nsnull;
|
|
mRootElementStyleFrame = nsnull;
|
|
mDocElementContainingBlock = nsnull;
|
|
mPageSequenceFrame = nsnull;
|
|
mGfxScrollFrame = nsnull;
|
|
mHasRootAbsPosContainingBlock = PR_FALSE;
|
|
mFixedContainingBlock = frameManager->GetRootFrame();
|
|
}
|
|
|
|
if (haveFLS && mRootElementFrame) {
|
|
RecoverLetterFrames(containingBlock);
|
|
}
|
|
|
|
// If we're just reconstructing frames for the element, then the
|
|
// following ContentInserted notification on the element will
|
|
// take care of fixing up any adjacent text nodes. We don't need
|
|
// to do this if the table parent type of our parent type is not
|
|
// eTypeBlock, though, because in that case the whitespace isn't
|
|
// being suppressed due to us anyway.
|
|
if (aContainer && !aChild->IsRootOfAnonymousSubtree() &&
|
|
aFlags != REMOVE_FOR_RECONSTRUCTION &&
|
|
GetParentType(parentType) == eTypeBlock) {
|
|
// Adjacent whitespace-only text nodes might have been suppressed if
|
|
// this node does not have inline ends. Create frames for them now
|
|
// if necessary.
|
|
// Reframe any text node just before the node being removed, if there is
|
|
// one, and if it's not the last child or the first child. If a whitespace
|
|
// textframe was being suppressed and it's now the last child or first
|
|
// child then it can stay suppressed since the parent must be a block
|
|
// and hence it's adjacent to a block end.
|
|
// If aOldNextSibling is null, then the text node before the node being
|
|
// removed is the last node, and we don't need to worry about it.
|
|
if (aOldNextSibling) {
|
|
nsIContent* prevSibling = aOldNextSibling->GetPreviousSibling();
|
|
if (prevSibling && prevSibling->GetPreviousSibling()) {
|
|
LAYOUT_PHASE_TEMP_EXIT();
|
|
ReframeTextIfNeeded(aContainer, prevSibling);
|
|
LAYOUT_PHASE_TEMP_REENTER();
|
|
}
|
|
}
|
|
// Reframe any text node just after the node being removed, if there is
|
|
// one, and if it's not the last child or the first child.
|
|
if (aOldNextSibling && aOldNextSibling->GetNextSibling() &&
|
|
aOldNextSibling->GetPreviousSibling()) {
|
|
LAYOUT_PHASE_TEMP_EXIT();
|
|
ReframeTextIfNeeded(aContainer, aOldNextSibling);
|
|
LAYOUT_PHASE_TEMP_REENTER();
|
|
}
|
|
}
|
|
|
|
#ifdef DEBUG
|
|
if (gReallyNoisyContentUpdates && parentFrame) {
|
|
printf("nsCSSFrameConstructor::ContentRemoved: resulting frame model:\n");
|
|
parentFrame->List(stdout, 0);
|
|
}
|
|
#endif
|
|
}
|
|
|
|
return rv;
|
|
}
|
|
|
|
#ifdef DEBUG
|
|
// To ensure that the functions below are only called within
|
|
// |ApplyRenderingChangeToTree|.
|
|
static PRBool gInApplyRenderingChangeToTree = PR_FALSE;
|
|
#endif
|
|
|
|
static void
|
|
DoApplyRenderingChangeToTree(nsIFrame* aFrame,
|
|
nsIViewManager* aViewManager,
|
|
nsFrameManager* aFrameManager,
|
|
nsChangeHint aChange);
|
|
|
|
/**
|
|
* @param aBoundsRect returns the bounds enclosing the areas covered by aFrame and its childre
|
|
* This rect is relative to aFrame's parent
|
|
*/
|
|
static void
|
|
UpdateViewsForTree(nsIFrame* aFrame, nsIViewManager* aViewManager,
|
|
nsFrameManager* aFrameManager,
|
|
nsChangeHint aChange)
|
|
{
|
|
NS_PRECONDITION(gInApplyRenderingChangeToTree,
|
|
"should only be called within ApplyRenderingChangeToTree");
|
|
|
|
nsIView* view = aFrame->GetView();
|
|
if (view) {
|
|
if (aChange & nsChangeHint_SyncFrameView) {
|
|
nsContainerFrame::SyncFrameViewProperties(aFrame->PresContext(),
|
|
aFrame, nsnull, view);
|
|
}
|
|
}
|
|
|
|
// now do children of frame
|
|
PRInt32 listIndex = 0;
|
|
nsIAtom* childList = nsnull;
|
|
|
|
do {
|
|
nsIFrame* child = aFrame->GetFirstChild(childList);
|
|
while (child) {
|
|
if (!(child->GetStateBits() & NS_FRAME_OUT_OF_FLOW)) {
|
|
// only do frames that don't have placeholders
|
|
if (nsGkAtoms::placeholderFrame == child->GetType()) {
|
|
// do the out-of-flow frame and its continuations
|
|
nsIFrame* outOfFlowFrame =
|
|
nsPlaceholderFrame::GetRealFrameForPlaceholder(child);
|
|
do {
|
|
DoApplyRenderingChangeToTree(outOfFlowFrame, aViewManager,
|
|
aFrameManager, aChange);
|
|
} while ((outOfFlowFrame = outOfFlowFrame->GetNextContinuation()));
|
|
} else if (childList == nsGkAtoms::popupList) {
|
|
DoApplyRenderingChangeToTree(child, aViewManager,
|
|
aFrameManager, aChange);
|
|
} else { // regular frame
|
|
if ((child->GetStateBits() & NS_FRAME_HAS_CONTAINER_LAYER) &&
|
|
(aChange & nsChangeHint_RepaintFrame)) {
|
|
FrameLayerBuilder::InvalidateThebesLayerContents(child,
|
|
child->GetVisualOverflowRectRelativeToSelf());
|
|
}
|
|
UpdateViewsForTree(child, aViewManager, aFrameManager, aChange);
|
|
}
|
|
}
|
|
child = child->GetNextSibling();
|
|
}
|
|
childList = aFrame->GetAdditionalChildListName(listIndex++);
|
|
} while (childList);
|
|
}
|
|
|
|
static void
|
|
DoApplyRenderingChangeToTree(nsIFrame* aFrame,
|
|
nsIViewManager* aViewManager,
|
|
nsFrameManager* aFrameManager,
|
|
nsChangeHint aChange)
|
|
{
|
|
NS_PRECONDITION(gInApplyRenderingChangeToTree,
|
|
"should only be called within ApplyRenderingChangeToTree");
|
|
|
|
for ( ; aFrame; aFrame = nsLayoutUtils::GetNextContinuationOrSpecialSibling(aFrame)) {
|
|
// Get view if this frame has one and trigger an update. If the
|
|
// frame doesn't have a view, find the nearest containing view
|
|
// (adjusting r's coordinate system to reflect the nesting) and
|
|
// update there.
|
|
UpdateViewsForTree(aFrame, aViewManager, aFrameManager, aChange);
|
|
|
|
// if frame has view, will already be invalidated
|
|
if (aChange & nsChangeHint_RepaintFrame) {
|
|
if (aFrame->IsFrameOfType(nsIFrame::eSVG)) {
|
|
if (!(aFrame->GetStateBits() & NS_STATE_SVG_NONDISPLAY_CHILD)) {
|
|
nsSVGOuterSVGFrame *outerSVGFrame = nsSVGUtils::GetOuterSVGFrame(aFrame);
|
|
if (outerSVGFrame) {
|
|
// We need this to invalidate frames when their 'filter' or 'marker'
|
|
// property changes. XXX in theory changes to 'marker' should be
|
|
// handled in nsSVGPathGeometryFrame::DidSetStyleContext, but for
|
|
// some reason that's broken.
|
|
//
|
|
// This call is also currently the only mechanism for invalidating
|
|
// the area covered by a <foreignObject> when 'opacity' changes on
|
|
// it or one of its ancestors. (For 'opacity' changes on <image> or
|
|
// a graphical element such as <path>, or on one of their
|
|
// ancestors, this is redundant since
|
|
// nsSVGPathGeometryFrame::DidSetStyleContext also invalidates.)
|
|
outerSVGFrame->UpdateAndInvalidateCoveredRegion(aFrame);
|
|
}
|
|
}
|
|
} else {
|
|
aFrame->InvalidateOverflowRect();
|
|
}
|
|
}
|
|
if (aChange & nsChangeHint_UpdateOpacityLayer) {
|
|
aFrame->MarkLayersActive(nsChangeHint_UpdateOpacityLayer);
|
|
aFrame->InvalidateLayer(aFrame->GetVisualOverflowRectRelativeToSelf(),
|
|
nsDisplayItem::TYPE_OPACITY);
|
|
}
|
|
|
|
if (aChange & nsChangeHint_UpdateTransformLayer) {
|
|
aFrame->MarkLayersActive(nsChangeHint_UpdateTransformLayer);
|
|
// Invalidate the old transformed area. The new transformed area
|
|
// will be invalidated by nsFrame::FinishAndStoreOverflowArea.
|
|
aFrame->InvalidateTransformLayer();
|
|
}
|
|
}
|
|
}
|
|
|
|
static void
|
|
ApplyRenderingChangeToTree(nsPresContext* aPresContext,
|
|
nsIFrame* aFrame,
|
|
nsChangeHint aChange)
|
|
{
|
|
nsIPresShell *shell = aPresContext->PresShell();
|
|
if (shell->IsPaintingSuppressed()) {
|
|
// Don't allow synchronous rendering changes when painting is turned off.
|
|
aChange = NS_SubtractHint(aChange, nsChangeHint_RepaintFrame);
|
|
if (!aChange) {
|
|
return;
|
|
}
|
|
}
|
|
|
|
// If the frame's background is propagated to an ancestor, walk up to
|
|
// that ancestor.
|
|
nsStyleContext *bgSC;
|
|
while (!nsCSSRendering::FindBackground(aPresContext, aFrame, &bgSC)) {
|
|
aFrame = aFrame->GetParent();
|
|
NS_ASSERTION(aFrame, "root frame must paint");
|
|
}
|
|
|
|
nsIViewManager* viewManager = shell->GetViewManager();
|
|
|
|
// Trigger rendering updates by damaging this frame and any
|
|
// continuations of this frame.
|
|
|
|
// XXX this needs to detect the need for a view due to an opacity change and deal with it...
|
|
|
|
nsIViewManager::UpdateViewBatch batch(viewManager);
|
|
|
|
#ifdef DEBUG
|
|
gInApplyRenderingChangeToTree = PR_TRUE;
|
|
#endif
|
|
DoApplyRenderingChangeToTree(aFrame, viewManager, shell->FrameManager(),
|
|
aChange);
|
|
#ifdef DEBUG
|
|
gInApplyRenderingChangeToTree = PR_FALSE;
|
|
#endif
|
|
|
|
batch.EndUpdateViewBatch(NS_VMREFRESH_NO_SYNC);
|
|
}
|
|
|
|
/**
|
|
* This method invalidates the canvas when frames are removed or added for a
|
|
* node that might have its background propagated to the canvas, i.e., a
|
|
* document root node or an HTML BODY which is a child of the root node.
|
|
*
|
|
* @param aFrame a frame for a content node about to be removed or a frame that
|
|
* was just created for a content node that was inserted.
|
|
*/
|
|
static void
|
|
InvalidateCanvasIfNeeded(nsIPresShell* presShell, nsIContent* node)
|
|
{
|
|
NS_PRECONDITION(presShell->GetRootFrame(), "What happened here?");
|
|
NS_PRECONDITION(presShell->GetPresContext(), "Say what?");
|
|
|
|
// Note that both in ContentRemoved and ContentInserted the content node
|
|
// will still have the right parent pointer, so looking at that is ok.
|
|
|
|
nsIContent* parent = node->GetParent();
|
|
if (parent) {
|
|
// Has a parent; might not be what we want
|
|
nsIContent* grandParent = parent->GetParent();
|
|
if (grandParent) {
|
|
// Has a grandparent, so not what we want
|
|
return;
|
|
}
|
|
|
|
// Check whether it's an HTML body
|
|
if (node->Tag() != nsGkAtoms::body ||
|
|
!node->IsHTML()) {
|
|
return;
|
|
}
|
|
}
|
|
|
|
// At this point the node has no parent or it's an HTML <body> child of the
|
|
// root. We might not need to invalidate in this case (eg we might be in
|
|
// XHTML or something), but chances are we want to. Play it safe.
|
|
// Invalidate the viewport.
|
|
|
|
// Wrap this in a DEFERRED view update batch so we don't try to
|
|
// flush out layout here
|
|
|
|
nsIViewManager::UpdateViewBatch batch(presShell->GetViewManager());
|
|
nsIFrame* rootFrame = presShell->GetRootFrame();
|
|
rootFrame->InvalidateFrameSubtree();
|
|
batch.EndUpdateViewBatch(NS_VMREFRESH_DEFERRED);
|
|
}
|
|
|
|
nsresult
|
|
nsCSSFrameConstructor::StyleChangeReflow(nsIFrame* aFrame,
|
|
nsChangeHint aHint)
|
|
{
|
|
// If the frame hasn't even received an initial reflow, then don't
|
|
// send it a style-change reflow!
|
|
if (aFrame->GetStateBits() & NS_FRAME_FIRST_REFLOW)
|
|
return NS_OK;
|
|
|
|
#ifdef DEBUG
|
|
if (gNoisyContentUpdates) {
|
|
printf("nsCSSFrameConstructor::StyleChangeReflow: aFrame=");
|
|
nsFrame::ListTag(stdout, aFrame);
|
|
printf("\n");
|
|
}
|
|
#endif
|
|
|
|
nsIPresShell::IntrinsicDirty dirtyType;
|
|
if (aHint & nsChangeHint_ClearDescendantIntrinsics) {
|
|
NS_ASSERTION(aHint & nsChangeHint_ClearAncestorIntrinsics,
|
|
"Please read the comments in nsChangeHint.h");
|
|
dirtyType = nsIPresShell::eStyleChange;
|
|
} else if (aHint & nsChangeHint_ClearAncestorIntrinsics) {
|
|
dirtyType = nsIPresShell::eTreeChange;
|
|
} else {
|
|
dirtyType = nsIPresShell::eResize;
|
|
}
|
|
|
|
nsFrameState dirtyBits;
|
|
if (aHint & nsChangeHint_NeedDirtyReflow) {
|
|
dirtyBits = NS_FRAME_IS_DIRTY;
|
|
} else {
|
|
dirtyBits = NS_FRAME_HAS_DIRTY_CHILDREN;
|
|
}
|
|
|
|
do {
|
|
mPresShell->FrameNeedsReflow(aFrame, dirtyType, dirtyBits);
|
|
aFrame = nsLayoutUtils::GetNextContinuationOrSpecialSibling(aFrame);
|
|
} while (aFrame);
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
nsresult
|
|
nsCSSFrameConstructor::CharacterDataChanged(nsIContent* aContent,
|
|
CharacterDataChangeInfo* aInfo)
|
|
{
|
|
AUTO_LAYOUT_PHASE_ENTRY_POINT(mPresShell->GetPresContext(), FrameC);
|
|
nsresult rv = NS_OK;
|
|
|
|
if ((aContent->HasFlag(NS_CREATE_FRAME_IF_NON_WHITESPACE) &&
|
|
!aContent->TextIsOnlyWhitespace()) ||
|
|
(aContent->HasFlag(NS_REFRAME_IF_WHITESPACE) &&
|
|
aContent->TextIsOnlyWhitespace())) {
|
|
#ifdef DEBUG
|
|
nsIFrame* frame = aContent->GetPrimaryFrame();
|
|
NS_ASSERTION(!frame || !frame->IsGeneratedContentFrame(),
|
|
"Bit should never be set on generated content");
|
|
#endif
|
|
LAYOUT_PHASE_TEMP_EXIT();
|
|
nsresult rv = RecreateFramesForContent(aContent, PR_FALSE);
|
|
LAYOUT_PHASE_TEMP_REENTER();
|
|
return rv;
|
|
}
|
|
|
|
// Find the child frame
|
|
nsIFrame* frame = aContent->GetPrimaryFrame();
|
|
|
|
// Notify the first frame that maps the content. It will generate a reflow
|
|
// command
|
|
|
|
// It's possible the frame whose content changed isn't inserted into the
|
|
// frame hierarchy yet, or that there is no frame that maps the content
|
|
if (nsnull != frame) {
|
|
#if 0
|
|
NS_FRAME_LOG(NS_FRAME_TRACE_CALLS,
|
|
("nsCSSFrameConstructor::CharacterDataChanged: content=%p[%s] subcontent=%p frame=%p",
|
|
aContent, ContentTag(aContent, 0),
|
|
aSubContent, frame));
|
|
#endif
|
|
|
|
// Special check for text content that is a child of a letter frame. If
|
|
// this happens, we should remove the letter frame, do whatever we're
|
|
// planning to do with this notification, then put the letter frame back.
|
|
// Note that this is basically what RecreateFramesForContent ends up doing;
|
|
// the reason we dont' want to call that here is that our text content
|
|
// could be native anonymous, in which case RecreateFramesForContent would
|
|
// completely barf on it. And recreating the non-anonymous ancestor would
|
|
// just lead us to come back into this notification (e.g. if quotes or
|
|
// counters are involved), leading to a loop.
|
|
nsIFrame* block = GetFloatContainingBlock(frame);
|
|
PRBool haveFirstLetterStyle = PR_FALSE;
|
|
if (block) {
|
|
// See if the block has first-letter style applied to it.
|
|
haveFirstLetterStyle = HasFirstLetterStyle(block);
|
|
if (haveFirstLetterStyle) {
|
|
RemoveLetterFrames(mPresShell->GetPresContext(), mPresShell,
|
|
mPresShell->FrameManager(), block);
|
|
// Reget |frame|, since we might have killed it.
|
|
// Do we really need to call CharacterDataChanged in this case, though?
|
|
frame = aContent->GetPrimaryFrame();
|
|
NS_ASSERTION(frame, "Should have frame here!");
|
|
}
|
|
}
|
|
|
|
frame->CharacterDataChanged(aInfo);
|
|
|
|
if (haveFirstLetterStyle) {
|
|
RecoverLetterFrames(block);
|
|
}
|
|
}
|
|
|
|
return rv;
|
|
}
|
|
|
|
NS_DECLARE_FRAME_PROPERTY(ChangeListProperty, nsnull)
|
|
|
|
nsresult
|
|
nsCSSFrameConstructor::ProcessRestyledFrames(nsStyleChangeList& aChangeList)
|
|
{
|
|
NS_ASSERTION(!nsContentUtils::IsSafeToRunScript(),
|
|
"Someone forgot a script blocker");
|
|
PRInt32 count = aChangeList.Count();
|
|
if (!count)
|
|
return NS_OK;
|
|
|
|
// Make sure to not rebuild quote or counter lists while we're
|
|
// processing restyles
|
|
BeginUpdate();
|
|
|
|
nsPresContext* presContext = mPresShell->GetPresContext();
|
|
FramePropertyTable* propTable = presContext->PropertyTable();
|
|
|
|
// Mark frames so that we skip frames that die along the way, bug 123049.
|
|
// A frame can be in the list multiple times with different hints. Further
|
|
// optmization is possible if nsStyleChangeList::AppendChange could coalesce
|
|
PRInt32 index = count;
|
|
|
|
while (0 <= --index) {
|
|
const nsStyleChangeData* changeData;
|
|
aChangeList.ChangeAt(index, &changeData);
|
|
if (changeData->mFrame) {
|
|
propTable->Set(changeData->mFrame, ChangeListProperty(),
|
|
NS_INT32_TO_PTR(1));
|
|
}
|
|
}
|
|
|
|
index = count;
|
|
PRBool didInvalidate = PR_FALSE;
|
|
PRBool didReflow = PR_FALSE;
|
|
|
|
while (0 <= --index) {
|
|
nsIFrame* frame;
|
|
nsIContent* content;
|
|
nsChangeHint hint;
|
|
aChangeList.ChangeAt(index, frame, content, hint);
|
|
|
|
NS_ASSERTION(!(hint & nsChangeHint_ReflowFrame) ||
|
|
(hint & nsChangeHint_NeedReflow),
|
|
"Reflow hint bits set without actually asking for a reflow");
|
|
|
|
if (frame && frame->GetContent() != content) {
|
|
// XXXbz this is due to image maps messing with the primary frame of
|
|
// <area>s. See bug 135040. Remove this block once that's fixed.
|
|
frame = nsnull;
|
|
if (!(hint & nsChangeHint_ReconstructFrame)) {
|
|
continue;
|
|
}
|
|
}
|
|
|
|
// skip any frame that has been destroyed due to a ripple effect
|
|
if (frame) {
|
|
if (!propTable->Get(frame, ChangeListProperty()))
|
|
continue;
|
|
}
|
|
|
|
if (hint & nsChangeHint_ReconstructFrame) {
|
|
RecreateFramesForContent(content, PR_FALSE);
|
|
} else {
|
|
NS_ASSERTION(frame, "This shouldn't happen");
|
|
if (hint & nsChangeHint_UpdateEffects) {
|
|
nsSVGEffects::UpdateEffects(frame);
|
|
}
|
|
if (hint & nsChangeHint_NeedReflow) {
|
|
StyleChangeReflow(frame, hint);
|
|
didReflow = PR_TRUE;
|
|
}
|
|
if (hint & (nsChangeHint_RepaintFrame | nsChangeHint_SyncFrameView |
|
|
nsChangeHint_UpdateOpacityLayer | nsChangeHint_UpdateTransformLayer)) {
|
|
ApplyRenderingChangeToTree(presContext, frame, hint);
|
|
didInvalidate = PR_TRUE;
|
|
}
|
|
if (hint & nsChangeHint_UpdateCursor) {
|
|
mPresShell->SynthesizeMouseMove(PR_FALSE);
|
|
}
|
|
}
|
|
}
|
|
|
|
EndUpdate();
|
|
|
|
if (didInvalidate && !didReflow) {
|
|
// RepaintFrame changes can indicate changes in opacity etc which
|
|
// can require plugin clipping to change. If we requested a reflow,
|
|
// we don't need to do this since the reflow will do it for us.
|
|
nsIFrame* rootFrame = mPresShell->FrameManager()->GetRootFrame();
|
|
nsRootPresContext* rootPC = presContext->GetRootPresContext();
|
|
if (rootPC) {
|
|
rootPC->RequestUpdatePluginGeometry(rootFrame);
|
|
}
|
|
}
|
|
|
|
// cleanup references and verify the style tree. Note that the latter needs
|
|
// to happen once we've processed the whole list, since until then the tree
|
|
// is not in fact in a consistent state.
|
|
index = count;
|
|
while (0 <= --index) {
|
|
const nsStyleChangeData* changeData;
|
|
aChangeList.ChangeAt(index, &changeData);
|
|
if (changeData->mFrame) {
|
|
propTable->Delete(changeData->mFrame, ChangeListProperty());
|
|
}
|
|
|
|
#ifdef DEBUG
|
|
// reget frame from content since it may have been regenerated...
|
|
if (changeData->mContent) {
|
|
nsIFrame* frame = changeData->mContent->GetPrimaryFrame();
|
|
if (frame) {
|
|
mPresShell->FrameManager()->DebugVerifyStyleTree(frame);
|
|
}
|
|
} else {
|
|
NS_WARNING("Unable to test style tree integrity -- no content node");
|
|
}
|
|
#endif
|
|
}
|
|
|
|
aChangeList.Clear();
|
|
return NS_OK;
|
|
}
|
|
|
|
void
|
|
nsCSSFrameConstructor::RestyleElement(Element *aElement,
|
|
nsIFrame *aPrimaryFrame,
|
|
nsChangeHint aMinHint,
|
|
RestyleTracker& aRestyleTracker,
|
|
PRBool aRestyleDescendants)
|
|
{
|
|
NS_ASSERTION(aPrimaryFrame == aElement->GetPrimaryFrame(),
|
|
"frame/content mismatch");
|
|
if (aPrimaryFrame && aPrimaryFrame->GetContent() != aElement) {
|
|
// XXXbz this is due to image maps messing with the primary frame pointer
|
|
// of <area>s. See bug 135040. We can remove this block once that's fixed.
|
|
aPrimaryFrame = nsnull;
|
|
}
|
|
NS_ASSERTION(!aPrimaryFrame || aPrimaryFrame->GetContent() == aElement,
|
|
"frame/content mismatch");
|
|
|
|
if (aMinHint & nsChangeHint_ReconstructFrame) {
|
|
RecreateFramesForContent(aElement, PR_FALSE);
|
|
} else if (aPrimaryFrame) {
|
|
nsStyleChangeList changeList;
|
|
mPresShell->FrameManager()->
|
|
ComputeStyleChangeFor(aPrimaryFrame, &changeList, aMinHint,
|
|
aRestyleTracker, aRestyleDescendants);
|
|
ProcessRestyledFrames(changeList);
|
|
} else {
|
|
// no frames, reconstruct for content
|
|
MaybeRecreateFramesForElement(aElement);
|
|
}
|
|
}
|
|
|
|
nsresult
|
|
nsCSSFrameConstructor::ContentStateChanged(nsIContent* aContent,
|
|
nsEventStates aStateMask)
|
|
{
|
|
// XXXbz it would be good if this function only took Elements, but
|
|
// we'd have to make ESM guarantee that usefully.
|
|
if (!aContent->IsElement()) {
|
|
return NS_OK;
|
|
}
|
|
|
|
Element* aElement = aContent->AsElement();
|
|
|
|
nsStyleSet *styleSet = mPresShell->StyleSet();
|
|
nsPresContext *presContext = mPresShell->GetPresContext();
|
|
NS_ASSERTION(styleSet, "couldn't get style set");
|
|
|
|
nsChangeHint hint = NS_STYLE_HINT_NONE;
|
|
// Any change to a content state that affects which frames we construct
|
|
// must lead to a frame reconstruct here if we already have a frame.
|
|
// Note that we never decide through non-CSS means to not create frames
|
|
// based on content states, so if we already don't have a frame we don't
|
|
// need to force a reframe -- if it's needed, the HasStateDependentStyle
|
|
// call will handle things.
|
|
nsIFrame* primaryFrame = aElement->GetPrimaryFrame();
|
|
if (primaryFrame) {
|
|
// If it's generated content, ignore LOADING/etc state changes on it.
|
|
if (!primaryFrame->IsGeneratedContentFrame() &&
|
|
aStateMask.HasAtLeastOneOfStates(NS_EVENT_STATE_BROKEN |
|
|
NS_EVENT_STATE_USERDISABLED |
|
|
NS_EVENT_STATE_SUPPRESSED |
|
|
NS_EVENT_STATE_LOADING)) {
|
|
hint = nsChangeHint_ReconstructFrame;
|
|
} else {
|
|
PRUint8 app = primaryFrame->GetStyleDisplay()->mAppearance;
|
|
if (app) {
|
|
nsITheme *theme = presContext->GetTheme();
|
|
if (theme && theme->ThemeSupportsWidget(presContext,
|
|
primaryFrame, app)) {
|
|
PRBool repaint = PR_FALSE;
|
|
theme->WidgetStateChanged(primaryFrame, app, nsnull, &repaint);
|
|
if (repaint) {
|
|
NS_UpdateHint(hint, nsChangeHint_RepaintFrame);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
primaryFrame->ContentStatesChanged(aStateMask);
|
|
}
|
|
|
|
nsRestyleHint rshint =
|
|
styleSet->HasStateDependentStyle(presContext, aElement, aStateMask);
|
|
|
|
if (aStateMask.HasState(NS_EVENT_STATE_HOVER) && rshint != 0) {
|
|
++mHoverGeneration;
|
|
}
|
|
|
|
if (aStateMask.HasState(NS_EVENT_STATE_VISITED)) {
|
|
// Exposing information to the page about whether the link is
|
|
// visited or not isn't really something we can worry about here.
|
|
// FIXME: We could probably do this a bit better.
|
|
NS_UpdateHint(hint, nsChangeHint_RepaintFrame);
|
|
}
|
|
|
|
PostRestyleEvent(aElement, rshint, hint);
|
|
return NS_OK;
|
|
}
|
|
|
|
void
|
|
nsCSSFrameConstructor::AttributeWillChange(Element* aElement,
|
|
PRInt32 aNameSpaceID,
|
|
nsIAtom* aAttribute,
|
|
PRInt32 aModType)
|
|
{
|
|
nsRestyleHint rshint =
|
|
mPresShell->StyleSet()->HasAttributeDependentStyle(mPresShell->GetPresContext(),
|
|
aElement,
|
|
aAttribute,
|
|
aModType,
|
|
PR_FALSE);
|
|
PostRestyleEvent(aElement, rshint, NS_STYLE_HINT_NONE);
|
|
}
|
|
|
|
void
|
|
nsCSSFrameConstructor::AttributeChanged(Element* aElement,
|
|
PRInt32 aNameSpaceID,
|
|
nsIAtom* aAttribute,
|
|
PRInt32 aModType)
|
|
{
|
|
// Hold onto the PresShell to prevent ourselves from being destroyed.
|
|
// XXXbz how, exactly, would this attribute change cause us to be
|
|
// destroyed from inside this function?
|
|
nsCOMPtr<nsIPresShell> shell = mPresShell;
|
|
|
|
// Get the frame associated with the content which is the highest in the frame tree
|
|
nsIFrame* primaryFrame = aElement->GetPrimaryFrame();
|
|
|
|
#if 0
|
|
NS_FRAME_LOG(NS_FRAME_TRACE_CALLS,
|
|
("HTMLStyleSheet::AttributeChanged: content=%p[%s] frame=%p",
|
|
aContent, ContentTag(aElement, 0), frame));
|
|
#endif
|
|
|
|
// the style tag has its own interpretation based on aHint
|
|
nsChangeHint hint = aElement->GetAttributeChangeHint(aAttribute, aModType);
|
|
|
|
PRBool reframe = (hint & nsChangeHint_ReconstructFrame) != 0;
|
|
|
|
#ifdef MOZ_XUL
|
|
// The following listbox widget trap prevents offscreen listbox widget
|
|
// content from being removed and re-inserted (which is what would
|
|
// happen otherwise).
|
|
if (!primaryFrame && !reframe) {
|
|
PRInt32 namespaceID;
|
|
nsIAtom* tag =
|
|
mDocument->BindingManager()->ResolveTag(aElement, &namespaceID);
|
|
|
|
if (namespaceID == kNameSpaceID_XUL &&
|
|
(tag == nsGkAtoms::listitem ||
|
|
tag == nsGkAtoms::listcell))
|
|
return;
|
|
}
|
|
|
|
if (aAttribute == nsGkAtoms::tooltiptext ||
|
|
aAttribute == nsGkAtoms::tooltip)
|
|
{
|
|
nsIRootBox* rootBox = nsIRootBox::GetRootBox(mPresShell);
|
|
if (rootBox) {
|
|
if (aModType == nsIDOMMutationEvent::REMOVAL)
|
|
rootBox->RemoveTooltipSupport(aElement);
|
|
if (aModType == nsIDOMMutationEvent::ADDITION)
|
|
rootBox->AddTooltipSupport(aElement);
|
|
}
|
|
}
|
|
|
|
#endif // MOZ_XUL
|
|
|
|
if (primaryFrame) {
|
|
// See if we have appearance information for a theme.
|
|
const nsStyleDisplay* disp = primaryFrame->GetStyleDisplay();
|
|
if (disp->mAppearance) {
|
|
nsPresContext* presContext = mPresShell->GetPresContext();
|
|
nsITheme *theme = presContext->GetTheme();
|
|
if (theme && theme->ThemeSupportsWidget(presContext, primaryFrame, disp->mAppearance)) {
|
|
PRBool repaint = PR_FALSE;
|
|
theme->WidgetStateChanged(primaryFrame, disp->mAppearance, aAttribute, &repaint);
|
|
if (repaint)
|
|
NS_UpdateHint(hint, nsChangeHint_RepaintFrame);
|
|
}
|
|
}
|
|
|
|
// let the frame deal with it now, so we don't have to deal later
|
|
primaryFrame->AttributeChanged(aNameSpaceID, aAttribute, aModType);
|
|
// XXXwaterson should probably check for special IB siblings
|
|
// here, and propagate the AttributeChanged notification to
|
|
// them, as well. Currently, inline frames don't do anything on
|
|
// this notification, so it's not that big a deal.
|
|
}
|
|
|
|
// See if we can optimize away the style re-resolution -- must be called after
|
|
// the frame's AttributeChanged() in case it does something that affects the style
|
|
nsRestyleHint rshint =
|
|
mPresShell->StyleSet()->HasAttributeDependentStyle(mPresShell->GetPresContext(),
|
|
aElement,
|
|
aAttribute,
|
|
aModType,
|
|
PR_TRUE);
|
|
|
|
PostRestyleEvent(aElement, rshint, hint);
|
|
}
|
|
|
|
void
|
|
nsCSSFrameConstructor::BeginUpdate() {
|
|
NS_ASSERTION(!nsContentUtils::IsSafeToRunScript(),
|
|
"Someone forgot a script blocker");
|
|
|
|
nsRootPresContext* rootPresContext =
|
|
mPresShell->GetPresContext()->GetRootPresContext();
|
|
if (rootPresContext) {
|
|
rootPresContext->IncrementDOMGeneration();
|
|
}
|
|
|
|
++mUpdateCount;
|
|
}
|
|
|
|
void
|
|
nsCSSFrameConstructor::EndUpdate()
|
|
{
|
|
if (mUpdateCount == 1) {
|
|
// This is the end of our last update. Before we decrement
|
|
// mUpdateCount, recalc quotes and counters as needed.
|
|
|
|
RecalcQuotesAndCounters();
|
|
NS_ASSERTION(mUpdateCount == 1, "Odd update count");
|
|
}
|
|
NS_ASSERTION(mUpdateCount, "Negative mUpdateCount!");
|
|
--mUpdateCount;
|
|
}
|
|
|
|
void
|
|
nsCSSFrameConstructor::RecalcQuotesAndCounters()
|
|
{
|
|
if (mQuotesDirty) {
|
|
mQuotesDirty = PR_FALSE;
|
|
mQuoteList.RecalcAll();
|
|
}
|
|
|
|
if (mCountersDirty) {
|
|
mCountersDirty = PR_FALSE;
|
|
mCounterManager.RecalcAll();
|
|
}
|
|
|
|
NS_ASSERTION(!mQuotesDirty, "Quotes updates will be lost");
|
|
NS_ASSERTION(!mCountersDirty, "Counter updates will be lost");
|
|
}
|
|
|
|
void
|
|
nsCSSFrameConstructor::WillDestroyFrameTree()
|
|
{
|
|
#if defined(DEBUG_dbaron_off)
|
|
mCounterManager.Dump();
|
|
#endif
|
|
|
|
mIsDestroyingFrameTree = PR_TRUE;
|
|
|
|
// Prevent frame tree destruction from being O(N^2)
|
|
mQuoteList.Clear();
|
|
mCounterManager.Clear();
|
|
|
|
// Remove our presshell as a style flush observer. But leave
|
|
// mObservingRefreshDriver true so we don't readd to it even if someone tries
|
|
// to post restyle events on us from this point on for some reason.
|
|
mPresShell->GetPresContext()->RefreshDriver()->
|
|
RemoveStyleFlushObserver(mPresShell);
|
|
}
|
|
|
|
//STATIC
|
|
|
|
// XXXbz I'd really like this method to go away. Once we have inline-block and
|
|
// I can just use that for sized broken images, that can happen, maybe.
|
|
void nsCSSFrameConstructor::GetAlternateTextFor(nsIContent* aContent,
|
|
nsIAtom* aTag, // content object's tag
|
|
nsXPIDLString& aAltText)
|
|
{
|
|
// The "alt" attribute specifies alternate text that is rendered
|
|
// when the image can not be displayed
|
|
|
|
// If there's no "alt" attribute, and aContent is an input
|
|
// element, then use the value of the "value" attribute
|
|
if (!aContent->GetAttr(kNameSpaceID_None, nsGkAtoms::alt, aAltText) &&
|
|
nsGkAtoms::input == aTag) {
|
|
// If there's no "value" attribute either, then use the localized string
|
|
// for "Submit" as the alternate text.
|
|
if (!aContent->GetAttr(kNameSpaceID_None, nsGkAtoms::value, aAltText)) {
|
|
nsContentUtils::GetLocalizedString(nsContentUtils::eFORMS_PROPERTIES,
|
|
"Submit", aAltText);
|
|
}
|
|
}
|
|
}
|
|
|
|
nsresult
|
|
nsCSSFrameConstructor::CreateContinuingOuterTableFrame(nsIPresShell* aPresShell,
|
|
nsPresContext* aPresContext,
|
|
nsIFrame* aFrame,
|
|
nsIFrame* aParentFrame,
|
|
nsIContent* aContent,
|
|
nsStyleContext* aStyleContext,
|
|
nsIFrame** aContinuingFrame)
|
|
{
|
|
nsIFrame* newFrame = NS_NewTableOuterFrame(aPresShell, aStyleContext);
|
|
|
|
if (newFrame) {
|
|
newFrame->Init(aContent, aParentFrame, aFrame);
|
|
|
|
// Create a continuing inner table frame, and if there's a caption then
|
|
// replicate the caption
|
|
nsFrameItems newChildFrames;
|
|
|
|
nsIFrame* childFrame = aFrame->GetFirstChild(nsnull);
|
|
if (childFrame) {
|
|
nsIFrame* continuingTableFrame;
|
|
nsresult rv = CreateContinuingFrame(aPresContext, childFrame, newFrame,
|
|
&continuingTableFrame);
|
|
if (NS_FAILED(rv)) {
|
|
newFrame->Destroy();
|
|
*aContinuingFrame = nsnull;
|
|
return rv;
|
|
}
|
|
newChildFrames.AddChild(continuingTableFrame);
|
|
|
|
NS_ASSERTION(!childFrame->GetNextSibling(),"there can be only one inner table frame");
|
|
}
|
|
|
|
// Set the outer table's initial child list
|
|
newFrame->SetInitialChildList(nsnull, newChildFrames);
|
|
|
|
*aContinuingFrame = newFrame;
|
|
return NS_OK;
|
|
}
|
|
else {
|
|
*aContinuingFrame = nsnull;
|
|
return NS_ERROR_OUT_OF_MEMORY;
|
|
}
|
|
}
|
|
|
|
nsresult
|
|
nsCSSFrameConstructor::CreateContinuingTableFrame(nsIPresShell* aPresShell,
|
|
nsPresContext* aPresContext,
|
|
nsIFrame* aFrame,
|
|
nsIFrame* aParentFrame,
|
|
nsIContent* aContent,
|
|
nsStyleContext* aStyleContext,
|
|
nsIFrame** aContinuingFrame)
|
|
{
|
|
nsIFrame* newFrame = NS_NewTableFrame(aPresShell, aStyleContext);
|
|
|
|
if (newFrame) {
|
|
newFrame->Init(aContent, aParentFrame, aFrame);
|
|
|
|
// Replicate any header/footer frames
|
|
nsFrameItems childFrames;
|
|
nsIFrame* childFrame = aFrame->GetFirstChild(nsnull);
|
|
for ( ; childFrame; childFrame = childFrame->GetNextSibling()) {
|
|
// See if it's a header/footer, possibly wrapped in a scroll frame.
|
|
nsTableRowGroupFrame* rowGroupFrame =
|
|
static_cast<nsTableRowGroupFrame*>(childFrame);
|
|
// If the row group was continued, then don't replicate it.
|
|
nsIFrame* rgNextInFlow = rowGroupFrame->GetNextInFlow();
|
|
if (rgNextInFlow) {
|
|
rowGroupFrame->SetRepeatable(PR_FALSE);
|
|
}
|
|
else if (rowGroupFrame->IsRepeatable()) {
|
|
// Replicate the header/footer frame.
|
|
nsTableRowGroupFrame* headerFooterFrame;
|
|
nsFrameItems childItems;
|
|
nsFrameConstructorState state(mPresShell, mFixedContainingBlock,
|
|
GetAbsoluteContainingBlock(newFrame),
|
|
nsnull);
|
|
state.mCreatingExtraFrames = PR_TRUE;
|
|
|
|
headerFooterFrame = static_cast<nsTableRowGroupFrame*>
|
|
(NS_NewTableRowGroupFrame(aPresShell, rowGroupFrame->GetStyleContext()));
|
|
nsIContent* headerFooter = rowGroupFrame->GetContent();
|
|
headerFooterFrame->Init(headerFooter, newFrame, nsnull);
|
|
ProcessChildren(state, headerFooter, rowGroupFrame->GetStyleContext(),
|
|
headerFooterFrame, PR_TRUE, childItems, PR_FALSE,
|
|
nsnull);
|
|
NS_ASSERTION(state.mFloatedItems.IsEmpty(), "unexpected floated element");
|
|
headerFooterFrame->SetInitialChildList(nsnull, childItems);
|
|
headerFooterFrame->SetRepeatable(PR_TRUE);
|
|
|
|
// Table specific initialization
|
|
headerFooterFrame->InitRepeatedFrame(aPresContext, rowGroupFrame);
|
|
|
|
// XXX Deal with absolute and fixed frames...
|
|
childFrames.AddChild(headerFooterFrame);
|
|
}
|
|
}
|
|
|
|
// Set the table frame's initial child list
|
|
newFrame->SetInitialChildList(nsnull, childFrames);
|
|
|
|
*aContinuingFrame = newFrame;
|
|
return NS_OK;
|
|
}
|
|
else {
|
|
*aContinuingFrame = nsnull;
|
|
return NS_ERROR_OUT_OF_MEMORY;
|
|
}
|
|
}
|
|
|
|
nsresult
|
|
nsCSSFrameConstructor::CreateContinuingFrame(nsPresContext* aPresContext,
|
|
nsIFrame* aFrame,
|
|
nsIFrame* aParentFrame,
|
|
nsIFrame** aContinuingFrame,
|
|
PRBool aIsFluid)
|
|
{
|
|
nsIPresShell* shell = aPresContext->PresShell();
|
|
nsStyleContext* styleContext = aFrame->GetStyleContext();
|
|
nsIFrame* newFrame = nsnull;
|
|
nsresult rv = NS_OK;
|
|
nsIFrame* nextContinuation = aFrame->GetNextContinuation();
|
|
nsIFrame* nextInFlow = aFrame->GetNextInFlow();
|
|
|
|
// Use the frame type to determine what type of frame to create
|
|
nsIAtom* frameType = aFrame->GetType();
|
|
nsIContent* content = aFrame->GetContent();
|
|
|
|
NS_ASSERTION(aFrame->GetSplittableType() != NS_FRAME_NOT_SPLITTABLE,
|
|
"why CreateContinuingFrame for a non-splittable frame?");
|
|
|
|
if (nsGkAtoms::textFrame == frameType) {
|
|
newFrame = NS_NewContinuingTextFrame(shell, styleContext);
|
|
|
|
if (newFrame) {
|
|
newFrame->Init(content, aParentFrame, aFrame);
|
|
}
|
|
|
|
} else if (nsGkAtoms::inlineFrame == frameType) {
|
|
newFrame = NS_NewInlineFrame(shell, styleContext);
|
|
|
|
if (newFrame) {
|
|
newFrame->Init(content, aParentFrame, aFrame);
|
|
}
|
|
|
|
} else if (nsGkAtoms::blockFrame == frameType) {
|
|
newFrame = NS_NewBlockFrame(shell, styleContext);
|
|
|
|
if (newFrame) {
|
|
newFrame->Init(content, aParentFrame, aFrame);
|
|
}
|
|
|
|
#ifdef MOZ_XUL
|
|
} else if (nsGkAtoms::XULLabelFrame == frameType) {
|
|
newFrame = NS_NewXULLabelFrame(shell, styleContext);
|
|
|
|
if (newFrame) {
|
|
newFrame->Init(content, aParentFrame, aFrame);
|
|
}
|
|
#endif
|
|
} else if (nsGkAtoms::columnSetFrame == frameType) {
|
|
newFrame = NS_NewColumnSetFrame(shell, styleContext, 0);
|
|
|
|
if (newFrame) {
|
|
newFrame->Init(content, aParentFrame, aFrame);
|
|
}
|
|
|
|
} else if (nsGkAtoms::positionedInlineFrame == frameType) {
|
|
newFrame = NS_NewPositionedInlineFrame(shell, styleContext);
|
|
|
|
if (newFrame) {
|
|
newFrame->Init(content, aParentFrame, aFrame);
|
|
}
|
|
|
|
} else if (nsGkAtoms::pageFrame == frameType) {
|
|
nsIFrame* canvasFrame;
|
|
rv = ConstructPageFrame(shell, aPresContext, aParentFrame, aFrame,
|
|
newFrame, canvasFrame);
|
|
} else if (nsGkAtoms::tableOuterFrame == frameType) {
|
|
rv = CreateContinuingOuterTableFrame(shell, aPresContext, aFrame, aParentFrame,
|
|
content, styleContext, &newFrame);
|
|
|
|
} else if (nsGkAtoms::tableFrame == frameType) {
|
|
rv = CreateContinuingTableFrame(shell, aPresContext, aFrame, aParentFrame,
|
|
content, styleContext, &newFrame);
|
|
|
|
} else if (nsGkAtoms::tableRowGroupFrame == frameType) {
|
|
newFrame = NS_NewTableRowGroupFrame(shell, styleContext);
|
|
|
|
if (newFrame) {
|
|
newFrame->Init(content, aParentFrame, aFrame);
|
|
}
|
|
|
|
} else if (nsGkAtoms::tableRowFrame == frameType) {
|
|
newFrame = NS_NewTableRowFrame(shell, styleContext);
|
|
|
|
if (newFrame) {
|
|
newFrame->Init(content, aParentFrame, aFrame);
|
|
|
|
// Create a continuing frame for each table cell frame
|
|
nsFrameItems newChildList;
|
|
nsIFrame* cellFrame = aFrame->GetFirstChild(nsnull);
|
|
while (cellFrame) {
|
|
// See if it's a table cell frame
|
|
if (IS_TABLE_CELL(cellFrame->GetType())) {
|
|
nsIFrame* continuingCellFrame;
|
|
rv = CreateContinuingFrame(aPresContext, cellFrame, newFrame,
|
|
&continuingCellFrame);
|
|
if (NS_FAILED(rv)) {
|
|
newChildList.DestroyFrames();
|
|
newFrame->Destroy();
|
|
*aContinuingFrame = nsnull;
|
|
return NS_ERROR_OUT_OF_MEMORY;
|
|
}
|
|
newChildList.AddChild(continuingCellFrame);
|
|
}
|
|
cellFrame = cellFrame->GetNextSibling();
|
|
}
|
|
|
|
// Set the table cell's initial child list
|
|
newFrame->SetInitialChildList(nsnull, newChildList);
|
|
}
|
|
|
|
} else if (IS_TABLE_CELL(frameType)) {
|
|
// Warning: If you change this and add a wrapper frame around table cell
|
|
// frames, make sure Bug 368554 doesn't regress!
|
|
// See IsInAutoWidthTableCellForQuirk() in nsImageFrame.cpp.
|
|
newFrame = NS_NewTableCellFrame(shell, styleContext, IsBorderCollapse(aParentFrame));
|
|
|
|
if (newFrame) {
|
|
newFrame->Init(content, aParentFrame, aFrame);
|
|
|
|
// Create a continuing area frame
|
|
nsIFrame* continuingBlockFrame;
|
|
nsIFrame* blockFrame = aFrame->GetFirstChild(nsnull);
|
|
rv = CreateContinuingFrame(aPresContext, blockFrame, newFrame,
|
|
&continuingBlockFrame);
|
|
if (NS_FAILED(rv)) {
|
|
newFrame->Destroy();
|
|
*aContinuingFrame = nsnull;
|
|
return rv;
|
|
}
|
|
|
|
// Set the table cell's initial child list
|
|
SetInitialSingleChild(newFrame, continuingBlockFrame);
|
|
}
|
|
|
|
} else if (nsGkAtoms::lineFrame == frameType) {
|
|
newFrame = NS_NewFirstLineFrame(shell, styleContext);
|
|
|
|
if (newFrame) {
|
|
newFrame->Init(content, aParentFrame, aFrame);
|
|
}
|
|
|
|
} else if (nsGkAtoms::letterFrame == frameType) {
|
|
newFrame = NS_NewFirstLetterFrame(shell, styleContext);
|
|
|
|
if (newFrame) {
|
|
newFrame->Init(content, aParentFrame, aFrame);
|
|
}
|
|
|
|
} else if (nsGkAtoms::imageFrame == frameType) {
|
|
newFrame = NS_NewImageFrame(shell, styleContext);
|
|
|
|
if (newFrame) {
|
|
newFrame->Init(content, aParentFrame, aFrame);
|
|
}
|
|
} else if (nsGkAtoms::imageControlFrame == frameType) {
|
|
newFrame = NS_NewImageControlFrame(shell, styleContext);
|
|
|
|
if (newFrame) {
|
|
newFrame->Init(content, aParentFrame, aFrame);
|
|
}
|
|
} else if (nsGkAtoms::placeholderFrame == frameType) {
|
|
// create a continuing out of flow frame
|
|
nsIFrame* oofFrame = nsPlaceholderFrame::GetRealFrameForPlaceholder(aFrame);
|
|
nsIFrame* oofContFrame;
|
|
rv = CreateContinuingFrame(aPresContext, oofFrame, aParentFrame, &oofContFrame);
|
|
if (NS_FAILED(rv)) {
|
|
*aContinuingFrame = nsnull;
|
|
return rv;
|
|
}
|
|
// create a continuing placeholder frame
|
|
rv = CreatePlaceholderFrameFor(shell, content, oofContFrame, styleContext,
|
|
aParentFrame, aFrame,
|
|
aFrame->GetStateBits() & PLACEHOLDER_TYPE_MASK,
|
|
&newFrame);
|
|
if (NS_FAILED(rv)) {
|
|
oofContFrame->Destroy();
|
|
*aContinuingFrame = nsnull;
|
|
return rv;
|
|
}
|
|
} else if (nsGkAtoms::fieldSetFrame == frameType) {
|
|
newFrame = NS_NewFieldSetFrame(shell, styleContext);
|
|
|
|
if (newFrame) {
|
|
newFrame->Init(content, aParentFrame, aFrame);
|
|
|
|
// Create a continuing area frame
|
|
// XXXbz we really shouldn't have to do this by hand!
|
|
nsIFrame* continuingBlockFrame;
|
|
nsIFrame* blockFrame = GetFieldSetBlockFrame(aFrame);
|
|
rv = CreateContinuingFrame(aPresContext, blockFrame, newFrame,
|
|
&continuingBlockFrame);
|
|
if (NS_FAILED(rv)) {
|
|
newFrame->Destroy();
|
|
*aContinuingFrame = nsnull;
|
|
return rv;
|
|
}
|
|
// Set the fieldset's initial child list
|
|
SetInitialSingleChild(newFrame, continuingBlockFrame);
|
|
}
|
|
} else if (nsGkAtoms::legendFrame == frameType) {
|
|
newFrame = NS_NewLegendFrame(shell, styleContext);
|
|
|
|
if (newFrame) {
|
|
newFrame->Init(content, aParentFrame, aFrame);
|
|
}
|
|
} else {
|
|
NS_NOTREACHED("unexpected frame type");
|
|
*aContinuingFrame = nsnull;
|
|
return NS_ERROR_UNEXPECTED;
|
|
}
|
|
|
|
*aContinuingFrame = newFrame;
|
|
|
|
if (!newFrame) {
|
|
return NS_ERROR_OUT_OF_MEMORY;
|
|
}
|
|
|
|
// Init() set newFrame to be a fluid continuation of aFrame.
|
|
// If we want a non-fluid continuation, we need to call SetPrevContinuation()
|
|
// to reset NS_FRAME_IS_FLUID_CONTINUATION.
|
|
if (!aIsFluid) {
|
|
newFrame->SetPrevContinuation(aFrame);
|
|
}
|
|
|
|
// A continuation of generated content is also generated content
|
|
if (aFrame->GetStateBits() & NS_FRAME_GENERATED_CONTENT) {
|
|
newFrame->AddStateBits(NS_FRAME_GENERATED_CONTENT);
|
|
}
|
|
|
|
// A continuation of an out-of-flow is also an out-of-flow
|
|
if (aFrame->GetStateBits() & NS_FRAME_OUT_OF_FLOW) {
|
|
newFrame->AddStateBits(NS_FRAME_OUT_OF_FLOW);
|
|
}
|
|
|
|
if (nextInFlow) {
|
|
nextInFlow->SetPrevInFlow(newFrame);
|
|
newFrame->SetNextInFlow(nextInFlow);
|
|
} else if (nextContinuation) {
|
|
nextContinuation->SetPrevContinuation(newFrame);
|
|
newFrame->SetNextContinuation(nextContinuation);
|
|
}
|
|
|
|
NS_POSTCONDITION(!newFrame->GetNextSibling(), "unexpected sibling");
|
|
return NS_OK;
|
|
}
|
|
|
|
nsresult
|
|
nsCSSFrameConstructor::ReplicateFixedFrames(nsPageContentFrame* aParentFrame)
|
|
{
|
|
// Now deal with fixed-pos things.... They should appear on all pages,
|
|
// so we want to move over the placeholders when processing the child
|
|
// of the pageContentFrame.
|
|
|
|
nsIFrame* prevPageContentFrame = aParentFrame->GetPrevInFlow();
|
|
if (!prevPageContentFrame) {
|
|
return NS_OK;
|
|
}
|
|
nsIFrame* canvasFrame = aParentFrame->GetFirstChild(nsnull);
|
|
nsIFrame* prevCanvasFrame = prevPageContentFrame->GetFirstChild(nsnull);
|
|
if (!canvasFrame || !prevCanvasFrame) {
|
|
// document's root element frame missing
|
|
return NS_ERROR_UNEXPECTED;
|
|
}
|
|
|
|
nsFrameItems fixedPlaceholders;
|
|
nsIFrame* firstFixed = prevPageContentFrame->GetFirstChild(nsGkAtoms::fixedList);
|
|
if (!firstFixed) {
|
|
return NS_OK;
|
|
}
|
|
|
|
// Don't allow abs-pos descendants of the fixed content to escape the content.
|
|
// This should not normally be possible (because fixed-pos elements should
|
|
// be absolute containers) but fixed-pos tables currently aren't abs-pos
|
|
// containers.
|
|
nsFrameConstructorState state(mPresShell, aParentFrame,
|
|
nsnull,
|
|
mRootElementFrame);
|
|
state.mCreatingExtraFrames = PR_TRUE;
|
|
|
|
// Iterate across fixed frames and replicate each whose placeholder is a
|
|
// descendant of aFrame. (We don't want to explicitly copy placeholders that
|
|
// are within fixed frames, because that would cause duplicates on the new
|
|
// page - bug 389619)
|
|
for (nsIFrame* fixed = firstFixed; fixed; fixed = fixed->GetNextSibling()) {
|
|
nsIFrame* prevPlaceholder = mPresShell->FrameManager()->GetPlaceholderFrameFor(fixed);
|
|
if (prevPlaceholder &&
|
|
nsLayoutUtils::IsProperAncestorFrame(prevCanvasFrame, prevPlaceholder)) {
|
|
// We want to use the same style as the primary style frame for
|
|
// our content
|
|
nsIContent* content = fixed->GetContent();
|
|
nsStyleContext* styleContext =
|
|
nsLayoutUtils::GetStyleFrame(content->GetPrimaryFrame())->
|
|
GetStyleContext();
|
|
FrameConstructionItemList items;
|
|
AddFrameConstructionItemsInternal(state, content, canvasFrame,
|
|
content->Tag(),
|
|
content->GetNameSpaceID(),
|
|
PR_TRUE,
|
|
styleContext,
|
|
ITEM_ALLOW_XBL_BASE |
|
|
ITEM_ALLOW_PAGE_BREAK,
|
|
items);
|
|
for (FCItemIterator iter(items); !iter.IsDone(); iter.Next()) {
|
|
NS_ASSERTION(iter.item().DesiredParentType() ==
|
|
GetParentType(canvasFrame),
|
|
"This is not going to work");
|
|
nsresult rv =
|
|
ConstructFramesFromItem(state, iter, canvasFrame, fixedPlaceholders);
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
}
|
|
}
|
|
}
|
|
|
|
// Add the placeholders to our primary child list.
|
|
// XXXbz this is a little screwed up, since the fixed frames will have
|
|
// broken auto-positioning. Oh, well.
|
|
NS_ASSERTION(!canvasFrame->GetFirstChild(nsnull),
|
|
"leaking frames; doc root continuation must be empty");
|
|
canvasFrame->SetInitialChildList(nsnull, fixedPlaceholders);
|
|
return NS_OK;
|
|
}
|
|
|
|
nsresult
|
|
nsCSSFrameConstructor::GetInsertionPoint(nsIFrame* aParentFrame,
|
|
nsIContent* aChildContent,
|
|
nsIFrame** aInsertionPoint,
|
|
PRBool* aMultiple)
|
|
{
|
|
// Make the insertion point be the parent frame by default, in case
|
|
// we have to bail early.
|
|
*aInsertionPoint = aParentFrame;
|
|
|
|
nsIContent* container = aParentFrame->GetContent();
|
|
if (!container)
|
|
return NS_OK;
|
|
|
|
nsBindingManager *bindingManager = mDocument->BindingManager();
|
|
|
|
nsIContent* insertionElement;
|
|
if (aChildContent) {
|
|
// We've got an explicit insertion child. Check to see if it's
|
|
// anonymous.
|
|
if (aChildContent->GetBindingParent() == container) {
|
|
// This child content is anonymous. Don't use the insertion
|
|
// point, since that's only for the explicit kids.
|
|
return NS_OK;
|
|
}
|
|
|
|
PRUint32 index;
|
|
insertionElement = bindingManager->GetInsertionPoint(container,
|
|
aChildContent,
|
|
&index);
|
|
}
|
|
else {
|
|
PRBool multiple;
|
|
PRUint32 index;
|
|
insertionElement = bindingManager->GetSingleInsertionPoint(container,
|
|
&index,
|
|
&multiple);
|
|
if (multiple && aMultiple)
|
|
*aMultiple = multiple; // Record the fact that filters are in use.
|
|
}
|
|
|
|
if (insertionElement) {
|
|
nsIFrame* insertionPoint = insertionElement->GetPrimaryFrame();
|
|
if (insertionPoint) {
|
|
// Use the content insertion frame of the insertion point.
|
|
insertionPoint = insertionPoint->GetContentInsertionFrame();
|
|
if (insertionPoint && insertionPoint != aParentFrame)
|
|
GetInsertionPoint(insertionPoint, aChildContent, aInsertionPoint, aMultiple);
|
|
}
|
|
else {
|
|
// There was no frame created yet for the insertion point.
|
|
*aInsertionPoint = nsnull;
|
|
}
|
|
}
|
|
|
|
// fieldsets have multiple insertion points. Note that we might
|
|
// have to look at insertionElement here...
|
|
if (aMultiple && !*aMultiple) {
|
|
nsIContent* content = insertionElement ? insertionElement : container;
|
|
if (content->IsHTML(nsGkAtoms::fieldset)) {
|
|
*aMultiple = PR_TRUE;
|
|
}
|
|
}
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
// Capture state for the frame tree rooted at the frame associated with the
|
|
// content object, aContent
|
|
nsresult
|
|
nsCSSFrameConstructor::CaptureStateForFramesOf(nsIContent* aContent,
|
|
nsILayoutHistoryState* aHistoryState)
|
|
{
|
|
nsIFrame* frame = aContent->GetPrimaryFrame();
|
|
if (frame == mRootElementFrame) {
|
|
frame = mFixedContainingBlock;
|
|
}
|
|
if (frame) {
|
|
CaptureStateFor(frame, aHistoryState);
|
|
}
|
|
return NS_OK;
|
|
}
|
|
|
|
// Capture state for the frame tree rooted at aFrame.
|
|
nsresult
|
|
nsCSSFrameConstructor::CaptureStateFor(nsIFrame* aFrame,
|
|
nsILayoutHistoryState* aHistoryState)
|
|
{
|
|
if (aFrame && aHistoryState) {
|
|
mPresShell->FrameManager()->CaptureFrameState(aFrame, aHistoryState);
|
|
}
|
|
return NS_OK;
|
|
}
|
|
|
|
nsresult
|
|
nsCSSFrameConstructor::MaybeRecreateFramesForElement(Element* aElement)
|
|
{
|
|
nsresult result = NS_OK;
|
|
nsFrameManager *frameManager = mPresShell->FrameManager();
|
|
|
|
nsStyleContext *oldContext = frameManager->GetUndisplayedContent(aElement);
|
|
if (oldContext) {
|
|
// The parent has a frame, so try resolving a new context.
|
|
nsRefPtr<nsStyleContext> newContext = mPresShell->StyleSet()->
|
|
ResolveStyleFor(aElement, oldContext->GetParent());
|
|
|
|
frameManager->ChangeUndisplayedContent(aElement, newContext);
|
|
if (newContext->GetStyleDisplay()->mDisplay != NS_STYLE_DISPLAY_NONE) {
|
|
result = RecreateFramesForContent(aElement, PR_FALSE);
|
|
}
|
|
}
|
|
return result;
|
|
}
|
|
|
|
static nsIFrame*
|
|
FindFirstNonWhitespaceChild(nsIFrame* aParentFrame)
|
|
{
|
|
nsIFrame* f = aParentFrame->GetFirstChild(nsnull);
|
|
while (f && f->GetType() == nsGkAtoms::textFrame &&
|
|
f->GetContent()->TextIsOnlyWhitespace()) {
|
|
f = f->GetNextSibling();
|
|
}
|
|
return f;
|
|
}
|
|
|
|
static nsIFrame*
|
|
FindNextNonWhitespaceSibling(nsIFrame* aFrame)
|
|
{
|
|
nsIFrame* f = aFrame;
|
|
do {
|
|
f = f->GetNextSibling();
|
|
} while (f && f->GetType() == nsGkAtoms::textFrame &&
|
|
f->GetContent()->TextIsOnlyWhitespace());
|
|
return f;
|
|
}
|
|
|
|
PRBool
|
|
nsCSSFrameConstructor::MaybeRecreateContainerForFrameRemoval(nsIFrame* aFrame,
|
|
nsresult* aResult)
|
|
{
|
|
NS_PRECONDITION(aFrame, "Must have a frame");
|
|
NS_PRECONDITION(aFrame->GetParent(), "Frame shouldn't be root");
|
|
NS_PRECONDITION(aResult, "Null out param?");
|
|
NS_PRECONDITION(aFrame == aFrame->GetFirstContinuation(),
|
|
"aFrame not the result of GetPrimaryFrame()?");
|
|
|
|
if (IsFrameSpecial(aFrame)) {
|
|
// The removal functions can't handle removal of an {ib} split directly; we
|
|
// need to rebuild the containing block.
|
|
#ifdef DEBUG
|
|
if (gNoisyContentUpdates) {
|
|
printf("nsCSSFrameConstructor::MaybeRecreateContainerForFrameRemoval: "
|
|
"frame=");
|
|
nsFrame::ListTag(stdout, aFrame);
|
|
printf(" is special\n");
|
|
}
|
|
#endif
|
|
|
|
*aResult = ReframeContainingBlock(aFrame);
|
|
return PR_TRUE;
|
|
}
|
|
|
|
if (aFrame->GetType() == nsGkAtoms::legendFrame &&
|
|
aFrame->GetParent()->GetType() == nsGkAtoms::fieldSetFrame) {
|
|
// When we remove the legend for a fieldset, we should reframe
|
|
// the fieldset to ensure another legend is used, if there is one
|
|
*aResult = RecreateFramesForContent(aFrame->GetParent()->GetContent(), PR_FALSE);
|
|
return PR_TRUE;
|
|
}
|
|
|
|
// Now check for possibly needing to reconstruct due to a pseudo parent
|
|
nsIFrame* inFlowFrame =
|
|
(aFrame->GetStateBits() & NS_FRAME_OUT_OF_FLOW) ?
|
|
mPresShell->FrameManager()->GetPlaceholderFrameFor(aFrame) : aFrame;
|
|
NS_ASSERTION(inFlowFrame, "How did that happen?");
|
|
nsIFrame* parent = inFlowFrame->GetParent();
|
|
if (IsTablePseudo(parent)) {
|
|
if (FindFirstNonWhitespaceChild(parent) == inFlowFrame ||
|
|
!FindNextNonWhitespaceSibling(inFlowFrame->GetLastContinuation()) ||
|
|
// If we're a table-column-group, then the GetFirstChild check above is
|
|
// not going to catch cases when we're the first child.
|
|
(inFlowFrame->GetType() == nsGkAtoms::tableColGroupFrame &&
|
|
parent->GetFirstChild(nsGkAtoms::colGroupList) == inFlowFrame) ||
|
|
// Similar if we're a table-caption.
|
|
(inFlowFrame->GetType() == nsGkAtoms::tableCaptionFrame &&
|
|
parent->GetFirstChild(nsGkAtoms::captionList) == inFlowFrame)) {
|
|
// We're the first or last frame in the pseudo. Need to reframe.
|
|
// Good enough to recreate frames for |parent|'s content
|
|
*aResult = RecreateFramesForContent(parent->GetContent(), PR_TRUE);
|
|
return PR_TRUE;
|
|
}
|
|
}
|
|
|
|
// Might need to reconstruct things if this frame's nextSibling is a table
|
|
// pseudo, since removal of this frame might mean that this pseudo needs to
|
|
// get merged with the frame's prevSibling.
|
|
// XXXbz it would be really nice if we had the prevSibling here too, to check
|
|
// whether this is in fact the case...
|
|
nsIFrame* nextSibling =
|
|
FindNextNonWhitespaceSibling(inFlowFrame->GetLastContinuation());
|
|
NS_ASSERTION(!IsTablePseudo(inFlowFrame), "Shouldn't happen here");
|
|
if (nextSibling && IsTablePseudo(nextSibling)) {
|
|
#ifdef DEBUG
|
|
if (gNoisyContentUpdates) {
|
|
printf("nsCSSFrameConstructor::MaybeRecreateContainerForFrameRemoval: "
|
|
"frame=");
|
|
nsFrame::ListTag(stdout, aFrame);
|
|
printf(" has a table pseudo next sibling of different type\n");
|
|
}
|
|
#endif
|
|
// Good enough to recreate frames for aFrame's parent's content; even if
|
|
// aFrame's parent is a table pseudo, that'll be the right content node.
|
|
*aResult = RecreateFramesForContent(parent->GetContent(), PR_TRUE);
|
|
return PR_TRUE;
|
|
}
|
|
|
|
#ifdef MOZ_XUL
|
|
if (aFrame->GetType() == nsGkAtoms::popupSetFrame) {
|
|
nsIRootBox* rootBox = nsIRootBox::GetRootBox(mPresShell);
|
|
if (rootBox && rootBox->GetPopupSetFrame() == aFrame) {
|
|
*aResult = ReconstructDocElementHierarchy();
|
|
return PR_TRUE;
|
|
}
|
|
}
|
|
#endif
|
|
|
|
// We might still need to reconstruct things if the parent of inFlowFrame is
|
|
// special, since in that case the removal of aFrame might affect the
|
|
// splitting of its parent.
|
|
if (!IsFrameSpecial(parent)) {
|
|
return PR_FALSE;
|
|
}
|
|
|
|
// If inFlowFrame is not the only in-flow child of |parent|, then removing
|
|
// it will change nothing about the {ib} split.
|
|
if (inFlowFrame != parent->GetFirstChild(nsnull) ||
|
|
inFlowFrame->GetLastContinuation()->GetNextSibling()) {
|
|
return PR_FALSE;
|
|
}
|
|
|
|
// If the parent is the first or last part of the {ib} split, then
|
|
// removing one of its kids will have no effect on the splitting.
|
|
// Get the first continuation up front so we don't have to do it twice.
|
|
nsIFrame* parentFirstContinuation = parent->GetFirstContinuation();
|
|
if (!GetSpecialSibling(parentFirstContinuation) ||
|
|
!GetSpecialPrevSibling(parentFirstContinuation)) {
|
|
return PR_FALSE;
|
|
}
|
|
|
|
#ifdef DEBUG
|
|
if (gNoisyContentUpdates) {
|
|
printf("nsCSSFrameConstructor::MaybeRecreateContainerForFrameRemoval: "
|
|
"frame=");
|
|
nsFrame::ListTag(stdout, parent);
|
|
printf(" is special\n");
|
|
}
|
|
#endif
|
|
|
|
*aResult = ReframeContainingBlock(parent);
|
|
return PR_TRUE;
|
|
}
|
|
|
|
nsresult
|
|
nsCSSFrameConstructor::RecreateFramesForContent(nsIContent* aContent,
|
|
PRBool aAsyncInsert)
|
|
{
|
|
NS_PRECONDITION(!aAsyncInsert || aContent->IsElement(),
|
|
"Can only insert elements async");
|
|
// If there is no document, we don't want to recreate frames for it. (You
|
|
// shouldn't generally be giving this method content without a document
|
|
// anyway).
|
|
// Rebuilding the frame tree can have bad effects, especially if it's the
|
|
// frame tree for chrome (see bug 157322).
|
|
NS_ENSURE_TRUE(aContent->GetDocument(), NS_ERROR_FAILURE);
|
|
|
|
// Is the frame `special'? If so, we need to reframe the containing
|
|
// block *here*, rather than trying to remove and re-insert the
|
|
// content (which would otherwise result in *two* nested reframe
|
|
// containing block from ContentRemoved() and ContentInserted(),
|
|
// below!). We'd really like to optimize away one of those
|
|
// containing block reframes, hence the code here.
|
|
|
|
nsIFrame* frame = aContent->GetPrimaryFrame();
|
|
if (frame && frame->IsFrameOfType(nsIFrame::eMathML)) {
|
|
// Reframe the topmost MathML element to prevent exponential blowup
|
|
// (see bug 397518)
|
|
while (PR_TRUE) {
|
|
nsIContent* parentContent = aContent->GetParent();
|
|
nsIFrame* parentContentFrame = parentContent->GetPrimaryFrame();
|
|
if (!parentContentFrame || !parentContentFrame->IsFrameOfType(nsIFrame::eMathML))
|
|
break;
|
|
aContent = parentContent;
|
|
frame = parentContentFrame;
|
|
}
|
|
}
|
|
|
|
if (frame) {
|
|
nsIFrame* nonGeneratedAncestor = nsLayoutUtils::GetNonGeneratedAncestor(frame);
|
|
if (nonGeneratedAncestor->GetContent() != aContent) {
|
|
return RecreateFramesForContent(nonGeneratedAncestor->GetContent(), aAsyncInsert);
|
|
}
|
|
|
|
nsIFrame* parent = frame->GetParent();
|
|
nsIContent* parentContent = parent ? parent->GetContent() : nsnull;
|
|
// If the parent frame is a leaf then the subsequent insert will fail to
|
|
// create a frame, so we need to recreate the parent content. This happens
|
|
// with native anonymous content from the editor.
|
|
if (parent && parent->IsLeaf() && parentContent &&
|
|
parentContent != aContent) {
|
|
return RecreateFramesForContent(parentContent, aAsyncInsert);
|
|
}
|
|
}
|
|
|
|
nsresult rv = NS_OK;
|
|
|
|
if (frame && MaybeRecreateContainerForFrameRemoval(frame, &rv)) {
|
|
return rv;
|
|
}
|
|
|
|
nsINode* containerNode = aContent->GetNodeParent();
|
|
// XXXbz how can containerNode be null here?
|
|
if (containerNode) {
|
|
// Before removing the frames associated with the content object,
|
|
// ask them to save their state onto a temporary state object.
|
|
CaptureStateForFramesOf(aContent, mTempFrameTreeState);
|
|
|
|
// Need the nsIContent parent, which might be null here, since we need to
|
|
// pass it to ContentInserted and ContentRemoved.
|
|
nsCOMPtr<nsIContent> container = aContent->GetParent();
|
|
|
|
// Remove the frames associated with the content object.
|
|
PRBool didReconstruct;
|
|
rv = ContentRemoved(container, aContent,
|
|
aContent->IsRootOfAnonymousSubtree() ?
|
|
nsnull :
|
|
aContent->GetNextSibling(),
|
|
REMOVE_FOR_RECONSTRUCTION, &didReconstruct);
|
|
|
|
if (NS_SUCCEEDED(rv) && !didReconstruct) {
|
|
// Now, recreate the frames associated with this content object. If
|
|
// ContentRemoved triggered reconstruction, then we don't need to do this
|
|
// because the frames will already have been built.
|
|
if (aAsyncInsert) {
|
|
PostRestyleEvent(aContent->AsElement(), nsRestyleHint(0),
|
|
nsChangeHint_ReconstructFrame);
|
|
} else {
|
|
rv = ContentInserted(container, aContent, mTempFrameTreeState, PR_FALSE);
|
|
}
|
|
}
|
|
}
|
|
|
|
return rv;
|
|
}
|
|
|
|
//////////////////////////////////////////////////////////////////////
|
|
|
|
// Block frame construction code
|
|
|
|
already_AddRefed<nsStyleContext>
|
|
nsCSSFrameConstructor::GetFirstLetterStyle(nsIContent* aContent,
|
|
nsStyleContext* aStyleContext)
|
|
{
|
|
if (aContent) {
|
|
return mPresShell->StyleSet()->
|
|
ResolvePseudoElementStyle(aContent->AsElement(),
|
|
nsCSSPseudoElements::ePseudo_firstLetter,
|
|
aStyleContext);
|
|
}
|
|
return nsnull;
|
|
}
|
|
|
|
already_AddRefed<nsStyleContext>
|
|
nsCSSFrameConstructor::GetFirstLineStyle(nsIContent* aContent,
|
|
nsStyleContext* aStyleContext)
|
|
{
|
|
if (aContent) {
|
|
return mPresShell->StyleSet()->
|
|
ResolvePseudoElementStyle(aContent->AsElement(),
|
|
nsCSSPseudoElements::ePseudo_firstLine,
|
|
aStyleContext);
|
|
}
|
|
return nsnull;
|
|
}
|
|
|
|
// Predicate to see if a given content (block element) has
|
|
// first-letter style applied to it.
|
|
PRBool
|
|
nsCSSFrameConstructor::ShouldHaveFirstLetterStyle(nsIContent* aContent,
|
|
nsStyleContext* aStyleContext)
|
|
{
|
|
return nsLayoutUtils::HasPseudoStyle(aContent, aStyleContext,
|
|
nsCSSPseudoElements::ePseudo_firstLetter,
|
|
mPresShell->GetPresContext());
|
|
}
|
|
|
|
PRBool
|
|
nsCSSFrameConstructor::HasFirstLetterStyle(nsIFrame* aBlockFrame)
|
|
{
|
|
NS_PRECONDITION(aBlockFrame, "Need a frame");
|
|
NS_ASSERTION(nsLayoutUtils::GetAsBlock(aBlockFrame),
|
|
"Not a block frame?");
|
|
|
|
return (aBlockFrame->GetStateBits() & NS_BLOCK_HAS_FIRST_LETTER_STYLE) != 0;
|
|
}
|
|
|
|
PRBool
|
|
nsCSSFrameConstructor::ShouldHaveFirstLineStyle(nsIContent* aContent,
|
|
nsStyleContext* aStyleContext)
|
|
{
|
|
PRBool hasFirstLine =
|
|
nsLayoutUtils::HasPseudoStyle(aContent, aStyleContext,
|
|
nsCSSPseudoElements::ePseudo_firstLine,
|
|
mPresShell->GetPresContext());
|
|
if (hasFirstLine) {
|
|
// But disable for fieldsets
|
|
PRInt32 namespaceID;
|
|
nsIAtom* tag = mDocument->BindingManager()->ResolveTag(aContent,
|
|
&namespaceID);
|
|
// This check must match the one in FindHTMLData.
|
|
hasFirstLine = tag != nsGkAtoms::fieldset ||
|
|
namespaceID != kNameSpaceID_XHTML;
|
|
}
|
|
|
|
return hasFirstLine;
|
|
}
|
|
|
|
void
|
|
nsCSSFrameConstructor::ShouldHaveSpecialBlockStyle(nsIContent* aContent,
|
|
nsStyleContext* aStyleContext,
|
|
PRBool* aHaveFirstLetterStyle,
|
|
PRBool* aHaveFirstLineStyle)
|
|
{
|
|
*aHaveFirstLetterStyle =
|
|
ShouldHaveFirstLetterStyle(aContent, aStyleContext);
|
|
*aHaveFirstLineStyle =
|
|
ShouldHaveFirstLineStyle(aContent, aStyleContext);
|
|
}
|
|
|
|
/* static */
|
|
const nsCSSFrameConstructor::PseudoParentData
|
|
nsCSSFrameConstructor::sPseudoParentData[eParentTypeCount] = {
|
|
{ // Cell
|
|
FULL_CTOR_FCDATA(FCDATA_IS_TABLE_PART | FCDATA_SKIP_FRAMESET |
|
|
FCDATA_USE_CHILD_ITEMS |
|
|
FCDATA_DESIRED_PARENT_TYPE_TO_BITS(eTypeRow),
|
|
&nsCSSFrameConstructor::ConstructTableCell),
|
|
&nsCSSAnonBoxes::tableCell
|
|
},
|
|
{ // Row
|
|
FULL_CTOR_FCDATA(FCDATA_IS_TABLE_PART | FCDATA_SKIP_FRAMESET |
|
|
FCDATA_USE_CHILD_ITEMS |
|
|
FCDATA_DESIRED_PARENT_TYPE_TO_BITS(eTypeRowGroup),
|
|
&nsCSSFrameConstructor::ConstructTableRow),
|
|
&nsCSSAnonBoxes::tableRow
|
|
},
|
|
{ // Row group
|
|
FCDATA_DECL(FCDATA_IS_TABLE_PART | FCDATA_SKIP_FRAMESET |
|
|
FCDATA_DISALLOW_OUT_OF_FLOW | FCDATA_USE_CHILD_ITEMS |
|
|
FCDATA_SKIP_ABSPOS_PUSH |
|
|
FCDATA_DESIRED_PARENT_TYPE_TO_BITS(eTypeTable),
|
|
NS_NewTableRowGroupFrame),
|
|
&nsCSSAnonBoxes::tableRowGroup
|
|
},
|
|
{ // Column group
|
|
FCDATA_DECL(FCDATA_IS_TABLE_PART | FCDATA_SKIP_FRAMESET |
|
|
FCDATA_DISALLOW_OUT_OF_FLOW | FCDATA_USE_CHILD_ITEMS |
|
|
FCDATA_SKIP_ABSPOS_PUSH |
|
|
FCDATA_DESIRED_PARENT_TYPE_TO_BITS(eTypeTable),
|
|
NS_NewTableColGroupFrame),
|
|
&nsCSSAnonBoxes::tableColGroup
|
|
},
|
|
{ // Table
|
|
FULL_CTOR_FCDATA(FCDATA_SKIP_FRAMESET | FCDATA_USE_CHILD_ITEMS,
|
|
&nsCSSFrameConstructor::ConstructTable),
|
|
&nsCSSAnonBoxes::table
|
|
}
|
|
};
|
|
|
|
/*
|
|
* This function works as follows: we walk through the child list (aItems) and
|
|
* find items that cannot have aParentFrame as their parent. We wrap
|
|
* continuous runs of such items into a FrameConstructionItem for a frame that
|
|
* gets them closer to their desired parents. For example, a run of non-row
|
|
* children of a row-group will get wrapped in a row. When we later construct
|
|
* the frame for this wrapper (in this case for the row), it'll be the correct
|
|
* parent for the cells in the set of items we wrapped or we'll wrap cells
|
|
* around everything else. At the end of this method, aItems is guaranteed to
|
|
* contain only items for frames that can be direct kids of aParentFrame.
|
|
*/
|
|
nsresult
|
|
nsCSSFrameConstructor::CreateNeededTablePseudos(nsFrameConstructorState& aState,
|
|
FrameConstructionItemList& aItems,
|
|
nsIFrame* aParentFrame)
|
|
{
|
|
ParentType ourParentType = GetParentType(aParentFrame);
|
|
if (aItems.AllWantParentType(ourParentType)) {
|
|
// Nothing to do here
|
|
return NS_OK;
|
|
}
|
|
|
|
FCItemIterator iter(aItems);
|
|
do {
|
|
if (iter.SkipItemsWantingParentType(ourParentType)) {
|
|
// Nothing else to do here; we're finished
|
|
return NS_OK;
|
|
}
|
|
|
|
// Now we're pointing to the first child that wants a different parent
|
|
// type.
|
|
|
|
// Now try to figure out what kids we can group together. We can generally
|
|
// group everything that has a different desired parent type from us. Two
|
|
// exceptions to this:
|
|
// 1) If our parent type is table, we can't group columns with anything
|
|
// else other than whitespace.
|
|
// 2) Whitespace that lies between two things we can group which both want
|
|
// a non-block parent should be dropped, even if we can't group them
|
|
// with each other and even if the whitespace wants a parent of
|
|
// ourParentType. Ends of the list count as things that don't want a
|
|
// block parent (so that for example we'll drop a whitespace-only list).
|
|
|
|
FCItemIterator endIter(iter); /* iterator to find the end of the group */
|
|
ParentType groupingParentType = endIter.item().DesiredParentType();
|
|
if (aItems.AllWantParentType(groupingParentType) &&
|
|
groupingParentType != eTypeBlock) {
|
|
// Just group them all and be done with it. We need the check for
|
|
// eTypeBlock here to catch the "all the items are whitespace" case
|
|
// described above.
|
|
endIter.SetToEnd();
|
|
} else {
|
|
// Locate the end of the group.
|
|
|
|
// Keep track of the type the previous item wanted, in case we have to
|
|
// deal with whitespace. Start it off with ourParentType, since that's
|
|
// the last thing |iter| would have skipped over.
|
|
ParentType prevParentType = ourParentType;
|
|
do {
|
|
/* Walk an iterator past any whitespace that we might be able to drop from the list */
|
|
FCItemIterator spaceEndIter(endIter);
|
|
if (prevParentType != eTypeBlock &&
|
|
!aParentFrame->IsGeneratedContentFrame() &&
|
|
spaceEndIter.item().IsWhitespace(aState)) {
|
|
PRBool trailingSpaces = spaceEndIter.SkipWhitespace(aState);
|
|
|
|
// See whether we can drop the whitespace
|
|
if (trailingSpaces ||
|
|
spaceEndIter.item().DesiredParentType() != eTypeBlock) {
|
|
PRBool updateStart = (iter == endIter);
|
|
endIter.DeleteItemsTo(spaceEndIter);
|
|
NS_ASSERTION(trailingSpaces == endIter.IsDone(), "These should match");
|
|
|
|
if (updateStart) {
|
|
iter = endIter;
|
|
}
|
|
|
|
if (trailingSpaces) {
|
|
break; /* Found group end */
|
|
}
|
|
|
|
if (updateStart) {
|
|
// Update groupingParentType, since it might have been eTypeBlock
|
|
// just because of the whitespace.
|
|
groupingParentType = iter.item().DesiredParentType();
|
|
}
|
|
}
|
|
}
|
|
|
|
// Now endIter points to a non-whitespace item or a non-droppable
|
|
// whitespace item. In the latter case, if this is the end of the group
|
|
// we'll traverse this whitespace again. But it'll all just be quick
|
|
// DesiredParentType() checks which will match ourParentType (that's
|
|
// what it means that this is the group end), so it's OK.
|
|
prevParentType = endIter.item().DesiredParentType();
|
|
if (prevParentType == ourParentType) {
|
|
// End the group at endIter.
|
|
break;
|
|
}
|
|
|
|
if (ourParentType == eTypeTable &&
|
|
(prevParentType == eTypeColGroup) !=
|
|
(groupingParentType == eTypeColGroup)) {
|
|
// Either we started with columns and now found something else, or vice
|
|
// versa. In any case, end the grouping.
|
|
break;
|
|
}
|
|
|
|
// Include the whitespace we didn't drop (if any) in the group, since
|
|
// this is not the end of the group. Note that this doesn't change
|
|
// prevParentType, since if we didn't drop the whitespace then we ended
|
|
// at something that wants a block parent.
|
|
endIter = spaceEndIter;
|
|
|
|
endIter.Next();
|
|
} while (!endIter.IsDone());
|
|
}
|
|
|
|
if (iter == endIter) {
|
|
// Nothing to wrap here; just skipped some whitespace
|
|
continue;
|
|
}
|
|
|
|
// Now group together all the items between iter and endIter. The right
|
|
// parent type to use depends on ourParentType.
|
|
ParentType wrapperType;
|
|
switch (ourParentType) {
|
|
case eTypeBlock:
|
|
wrapperType = eTypeTable;
|
|
break;
|
|
case eTypeRow:
|
|
// The parent type for a cell is eTypeBlock, since that's what a cell
|
|
// looks like to its kids.
|
|
wrapperType = eTypeBlock;
|
|
break;
|
|
case eTypeRowGroup:
|
|
wrapperType = eTypeRow;
|
|
break;
|
|
case eTypeTable:
|
|
// Either colgroup or rowgroup, depending on what we're grouping.
|
|
wrapperType = groupingParentType == eTypeColGroup ?
|
|
eTypeColGroup : eTypeRowGroup;
|
|
break;
|
|
default:
|
|
NS_NOTREACHED("Colgroups should be suppresing non-col child items");
|
|
break;
|
|
}
|
|
|
|
const PseudoParentData& pseudoData = sPseudoParentData[wrapperType];
|
|
nsIAtom* pseudoType = *pseudoData.mPseudoType;
|
|
nsStyleContext* parentStyle = aParentFrame->GetStyleContext();
|
|
nsIContent* parentContent = aParentFrame->GetContent();
|
|
|
|
if (pseudoType == nsCSSAnonBoxes::table &&
|
|
parentStyle->GetStyleDisplay()->mDisplay == NS_STYLE_DISPLAY_INLINE) {
|
|
pseudoType = nsCSSAnonBoxes::inlineTable;
|
|
}
|
|
|
|
nsRefPtr<nsStyleContext> wrapperStyle =
|
|
mPresShell->StyleSet()->ResolveAnonymousBoxStyle(pseudoType, parentStyle);
|
|
FrameConstructionItem* newItem =
|
|
new FrameConstructionItem(&pseudoData.mFCData,
|
|
// Use the content of our parent frame
|
|
parentContent,
|
|
// Lie about the tag; it doesn't matter anyway
|
|
pseudoType,
|
|
// The namespace does matter, however; it needs
|
|
// to match that of our first child item to
|
|
// match the old behavior
|
|
iter.item().mNameSpaceID,
|
|
// no pending binding
|
|
nsnull,
|
|
wrapperStyle.forget(),
|
|
PR_TRUE);
|
|
|
|
// Here we're cheating a tad... technically, table-internal items should be
|
|
// inline if aParentFrame is inline, but they'll get wrapped in an
|
|
// inline-table in the end, so it'll all work out. In any case, arguably
|
|
// we don't need to maintain this state at this point... but it's better
|
|
// to, I guess.
|
|
newItem->mIsAllInline = newItem->mHasInlineEnds =
|
|
newItem->mStyleContext->GetStyleDisplay()->IsInlineOutside();
|
|
|
|
// Table pseudo frames always induce line boundaries around their
|
|
// contents.
|
|
newItem->mChildItems.SetLineBoundaryAtStart(PR_TRUE);
|
|
newItem->mChildItems.SetLineBoundaryAtEnd(PR_TRUE);
|
|
// The parent of the items in aItems is also the parent of the items
|
|
// in mChildItems
|
|
newItem->mChildItems.SetParentHasNoXBLChildren(
|
|
aItems.ParentHasNoXBLChildren());
|
|
|
|
// Eat up all items between |iter| and |endIter| and put them in our wrapper
|
|
// Advances |iter| to point to |endIter|.
|
|
iter.AppendItemsToList(endIter, newItem->mChildItems);
|
|
|
|
iter.InsertItem(newItem);
|
|
|
|
// Now |iter| points to the item that was the first one we didn't wrap;
|
|
// loop and see whether we need to skip it or wrap it in something
|
|
// different.
|
|
} while (!iter.IsDone());
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
inline nsresult
|
|
nsCSSFrameConstructor::ConstructFramesFromItemList(nsFrameConstructorState& aState,
|
|
FrameConstructionItemList& aItems,
|
|
nsIFrame* aParentFrame,
|
|
nsFrameItems& aFrameItems)
|
|
{
|
|
nsresult rv = CreateNeededTablePseudos(aState, aItems, aParentFrame);
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
|
|
#ifdef DEBUG
|
|
for (FCItemIterator iter(aItems); !iter.IsDone(); iter.Next()) {
|
|
NS_ASSERTION(iter.item().DesiredParentType() == GetParentType(aParentFrame),
|
|
"Needed pseudos didn't get created; expect bad things");
|
|
}
|
|
#endif
|
|
|
|
for (FCItemIterator iter(aItems); !iter.IsDone(); iter.Next()) {
|
|
rv = ConstructFramesFromItem(aState, iter, aParentFrame, aFrameItems);
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
}
|
|
|
|
NS_ASSERTION(!aState.mHavePendingPopupgroup,
|
|
"Should have proccessed it by now");
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
nsresult
|
|
nsCSSFrameConstructor::ProcessChildren(nsFrameConstructorState& aState,
|
|
nsIContent* aContent,
|
|
nsStyleContext* aStyleContext,
|
|
nsIFrame* aFrame,
|
|
const PRBool aCanHaveGeneratedContent,
|
|
nsFrameItems& aFrameItems,
|
|
const PRBool aAllowBlockStyles,
|
|
PendingBinding* aPendingBinding)
|
|
{
|
|
NS_PRECONDITION(aFrame, "Must have parent frame here");
|
|
NS_PRECONDITION(aFrame->GetContentInsertionFrame() == aFrame,
|
|
"Parent frame in ProcessChildren should be its own "
|
|
"content insertion frame");
|
|
|
|
// XXXbz ideally, this would do all the pushing of various
|
|
// containing blocks as needed, so callers don't have to do it...
|
|
|
|
PRBool haveFirstLetterStyle = PR_FALSE, haveFirstLineStyle = PR_FALSE;
|
|
if (aAllowBlockStyles) {
|
|
ShouldHaveSpecialBlockStyle(aContent, aStyleContext, &haveFirstLetterStyle,
|
|
&haveFirstLineStyle);
|
|
}
|
|
|
|
// The logic here needs to match the logic in GetFloatContainingBlock()
|
|
nsFrameConstructorSaveState floatSaveState;
|
|
if (aFrame->IsFrameOfType(nsIFrame::eMathML) ||
|
|
aFrame->IsBoxFrame()) {
|
|
aState.PushFloatContainingBlock(nsnull, floatSaveState);
|
|
} else if (aFrame->IsFloatContainingBlock()) {
|
|
aState.PushFloatContainingBlock(aFrame, floatSaveState);
|
|
}
|
|
|
|
nsFrameConstructorState::PendingBindingAutoPusher pusher(aState,
|
|
aPendingBinding);
|
|
|
|
FrameConstructionItemList itemsToConstruct;
|
|
nsresult rv = NS_OK;
|
|
|
|
// If we have first-letter or first-line style then frames can get
|
|
// moved around so don't set these flags.
|
|
if (aAllowBlockStyles && !haveFirstLetterStyle && !haveFirstLineStyle) {
|
|
itemsToConstruct.SetLineBoundaryAtStart(PR_TRUE);
|
|
itemsToConstruct.SetLineBoundaryAtEnd(PR_TRUE);
|
|
}
|
|
|
|
// Create any anonymous frames we need here. This must happen before the
|
|
// non-anonymous children are processed to ensure that popups are never
|
|
// constructed before the popupset.
|
|
nsAutoTArray<nsIAnonymousContentCreator::ContentInfo, 4> anonymousItems;
|
|
GetAnonymousContent(aContent, aFrame, anonymousItems);
|
|
for (PRUint32 i = 0; i < anonymousItems.Length(); ++i) {
|
|
nsIContent* content = anonymousItems[i].mContent;
|
|
#ifdef DEBUG
|
|
nsIAnonymousContentCreator* creator = do_QueryFrame(aFrame);
|
|
NS_ASSERTION(!creator || !creator->CreateFrameFor(content),
|
|
"If you need to use CreateFrameFor, you need to call "
|
|
"CreateAnonymousFrames manually and not follow the standard "
|
|
"ProcessChildren() codepath for this frame");
|
|
#endif
|
|
// Assert some things about this content
|
|
NS_ABORT_IF_FALSE(!(content->GetFlags() &
|
|
(NODE_DESCENDANTS_NEED_FRAMES | NODE_NEEDS_FRAME)),
|
|
"Should not be marked as needing frames");
|
|
NS_ABORT_IF_FALSE(!content->IsElement() ||
|
|
!(content->GetFlags() & ELEMENT_ALL_RESTYLE_FLAGS),
|
|
"Should have no pending restyle flags");
|
|
NS_ABORT_IF_FALSE(!content->GetPrimaryFrame(),
|
|
"Should have no existing frame");
|
|
NS_ABORT_IF_FALSE(!content->IsNodeOfType(nsINode::eCOMMENT) &&
|
|
!content->IsNodeOfType(nsINode::ePROCESSING_INSTRUCTION),
|
|
"Why is someone creating garbage anonymous content");
|
|
|
|
nsRefPtr<nsStyleContext> styleContext;
|
|
if (anonymousItems[i].mStyleContext) {
|
|
styleContext = anonymousItems[i].mStyleContext.forget();
|
|
} else {
|
|
styleContext = ResolveStyleContext(aFrame, content, &aState);
|
|
}
|
|
|
|
AddFrameConstructionItemsInternal(aState, content, aFrame,
|
|
content->Tag(), content->GetNameSpaceID(),
|
|
PR_TRUE, styleContext,
|
|
ITEM_ALLOW_XBL_BASE | ITEM_ALLOW_PAGE_BREAK,
|
|
itemsToConstruct);
|
|
}
|
|
|
|
if (!aFrame->IsLeaf()) {
|
|
// :before/:after content should have the same style context parent
|
|
// as normal kids.
|
|
// Note that we don't use this style context for looking up things like
|
|
// special block styles because in some cases involving table pseudo-frames
|
|
// it has nothing to do with the parent frame's desired behavior.
|
|
nsStyleContext* styleContext;
|
|
|
|
if (aCanHaveGeneratedContent) {
|
|
styleContext =
|
|
nsFrame::CorrectStyleParentFrame(aFrame, nsnull)->GetStyleContext();
|
|
// Probe for generated content before
|
|
CreateGeneratedContentItem(aState, aFrame, aContent, styleContext,
|
|
nsCSSPseudoElements::ePseudo_before,
|
|
itemsToConstruct);
|
|
}
|
|
|
|
ChildIterator iter, last;
|
|
for (ChildIterator::Init(aContent, &iter, &last);
|
|
iter != last;
|
|
++iter) {
|
|
nsIContent* child = *iter;
|
|
// Frame construction item construction should not post
|
|
// restyles, so removing restyle flags here is safe.
|
|
if (child->IsElement()) {
|
|
child->UnsetFlags(ELEMENT_ALL_RESTYLE_FLAGS);
|
|
}
|
|
AddFrameConstructionItems(aState, child, iter.XBLInvolved(), aFrame,
|
|
itemsToConstruct);
|
|
}
|
|
itemsToConstruct.SetParentHasNoXBLChildren(!iter.XBLInvolved());
|
|
|
|
if (aCanHaveGeneratedContent) {
|
|
// Probe for generated content after
|
|
CreateGeneratedContentItem(aState, aFrame, aContent, styleContext,
|
|
nsCSSPseudoElements::ePseudo_after,
|
|
itemsToConstruct);
|
|
}
|
|
} else {
|
|
ClearLazyBits(aContent->GetFirstChild(), nsnull);
|
|
}
|
|
|
|
rv = ConstructFramesFromItemList(aState, itemsToConstruct, aFrame,
|
|
aFrameItems);
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
|
|
NS_ASSERTION(!aAllowBlockStyles || !aFrame->IsBoxFrame(),
|
|
"can't be both block and box");
|
|
|
|
if (haveFirstLetterStyle) {
|
|
rv = WrapFramesInFirstLetterFrame(aContent, aFrame, aFrameItems);
|
|
}
|
|
if (haveFirstLineStyle) {
|
|
rv = WrapFramesInFirstLineFrame(aState, aContent, aFrame, nsnull,
|
|
aFrameItems);
|
|
}
|
|
|
|
// We might end up with first-line frames that change
|
|
// AnyKidsNeedBlockParent() without changing itemsToConstruct, but that
|
|
// should never happen for cases whan aFrame->IsBoxFrame().
|
|
NS_ASSERTION(!haveFirstLineStyle || !aFrame->IsBoxFrame(),
|
|
"Shouldn't have first-line style if we're a box");
|
|
NS_ASSERTION(!aFrame->IsBoxFrame() ||
|
|
itemsToConstruct.AnyItemsNeedBlockParent() ==
|
|
(AnyKidsNeedBlockParent(aFrameItems.FirstChild()) != nsnull),
|
|
"Something went awry in our block parent calculations");
|
|
|
|
if (aFrame->IsBoxFrame() && itemsToConstruct.AnyItemsNeedBlockParent()) {
|
|
// XXXbz we could do this on the FrameConstructionItemList level,
|
|
// no? And if we cared we could look through the item list
|
|
// instead of groveling through the framelist here..
|
|
nsIContent *badKid = AnyKidsNeedBlockParent(aFrameItems.FirstChild());
|
|
nsDependentAtomString parentTag(aContent->Tag()), kidTag(badKid->Tag());
|
|
const PRUnichar* params[] = { parentTag.get(), kidTag.get() };
|
|
nsStyleContext *frameStyleContext = aFrame->GetStyleContext();
|
|
const nsStyleDisplay *display = frameStyleContext->GetStyleDisplay();
|
|
const char *message =
|
|
(display->mDisplay == NS_STYLE_DISPLAY_INLINE_BOX)
|
|
? "NeededToWrapXULInlineBox" : "NeededToWrapXUL";
|
|
nsContentUtils::ReportToConsole(nsContentUtils::eXUL_PROPERTIES,
|
|
message,
|
|
params, NS_ARRAY_LENGTH(params),
|
|
nsnull,
|
|
EmptyString(), 0, 0, // not useful
|
|
nsIScriptError::warningFlag,
|
|
"FrameConstructor", mDocument);
|
|
|
|
nsRefPtr<nsStyleContext> blockSC = mPresShell->StyleSet()->
|
|
ResolveAnonymousBoxStyle(nsCSSAnonBoxes::mozXULAnonymousBlock,
|
|
frameStyleContext);
|
|
nsIFrame *blockFrame = NS_NewBlockFrame(mPresShell, blockSC);
|
|
// We might, in theory, want to set NS_BLOCK_FLOAT_MGR and
|
|
// NS_BLOCK_MARGIN_ROOT, but I think it's a bad idea given that
|
|
// a real block placed here wouldn't get those set on it.
|
|
|
|
InitAndRestoreFrame(aState, aContent, aFrame, nsnull,
|
|
blockFrame, PR_FALSE);
|
|
|
|
NS_ASSERTION(!blockFrame->HasView(), "need to do view reparenting");
|
|
ReparentFrames(aState.mFrameManager, blockFrame, aFrameItems);
|
|
|
|
blockFrame->SetInitialChildList(nsnull, aFrameItems);
|
|
NS_ASSERTION(aFrameItems.IsEmpty(), "How did that happen?");
|
|
aFrameItems.Clear();
|
|
aFrameItems.AddChild(blockFrame);
|
|
|
|
aFrame->AddStateBits(NS_STATE_BOX_WRAPS_KIDS_IN_BLOCK);
|
|
}
|
|
|
|
return rv;
|
|
}
|
|
|
|
//----------------------------------------------------------------------
|
|
|
|
// Support for :first-line style
|
|
|
|
// Special routine to handle placing a list of frames into a block
|
|
// frame that has first-line style. The routine ensures that the first
|
|
// collection of inline frames end up in a first-line frame.
|
|
// NOTE: aState may have containing block information related to a
|
|
// different part of the frame tree than where the first line occurs.
|
|
// In particular aState may be set up for where ContentInserted or
|
|
// ContentAppended is inserting content, which may be some
|
|
// non-first-in-flow continuation of the block to which the first-line
|
|
// belongs. So this function needs to be careful about how it uses
|
|
// aState.
|
|
nsresult
|
|
nsCSSFrameConstructor::WrapFramesInFirstLineFrame(
|
|
nsFrameConstructorState& aState,
|
|
nsIContent* aBlockContent,
|
|
nsIFrame* aBlockFrame,
|
|
nsIFrame* aLineFrame,
|
|
nsFrameItems& aFrameItems)
|
|
{
|
|
nsresult rv = NS_OK;
|
|
|
|
// Find the part of aFrameItems that we want to put in the first-line
|
|
nsFrameList::FrameLinkEnumerator link(aFrameItems);
|
|
while (!link.AtEnd() && IsInlineOutside(link.NextFrame())) {
|
|
link.Next();
|
|
}
|
|
|
|
nsFrameList firstLineChildren = aFrameItems.ExtractHead(link);
|
|
|
|
if (firstLineChildren.IsEmpty()) {
|
|
// Nothing is supposed to go into the first-line; nothing to do
|
|
return NS_OK;
|
|
}
|
|
|
|
if (!aLineFrame) {
|
|
// Create line frame
|
|
nsStyleContext* parentStyle =
|
|
nsFrame::CorrectStyleParentFrame(aBlockFrame,
|
|
nsCSSPseudoElements::firstLine)->
|
|
GetStyleContext();
|
|
nsRefPtr<nsStyleContext> firstLineStyle = GetFirstLineStyle(aBlockContent,
|
|
parentStyle);
|
|
|
|
aLineFrame = NS_NewFirstLineFrame(mPresShell, firstLineStyle);
|
|
|
|
if (aLineFrame) {
|
|
// Initialize the line frame
|
|
rv = InitAndRestoreFrame(aState, aBlockContent, aBlockFrame, nsnull,
|
|
aLineFrame);
|
|
|
|
// The lineFrame will be the block's first child; the rest of the
|
|
// frame list (after lastInlineFrame) will be the second and
|
|
// subsequent children; insert lineFrame into aFrameItems.
|
|
aFrameItems.InsertFrame(nsnull, nsnull, aLineFrame);
|
|
|
|
NS_ASSERTION(aLineFrame->GetStyleContext() == firstLineStyle,
|
|
"Bogus style context on line frame");
|
|
}
|
|
}
|
|
|
|
if (aLineFrame) {
|
|
// Give the inline frames to the lineFrame <b>after</b> reparenting them
|
|
ReparentFrames(aState.mFrameManager, aLineFrame, firstLineChildren);
|
|
if (aLineFrame->GetChildList(nsnull).IsEmpty() &&
|
|
(aLineFrame->GetStateBits() & NS_FRAME_FIRST_REFLOW)) {
|
|
aLineFrame->SetInitialChildList(nsnull, firstLineChildren);
|
|
} else {
|
|
aState.mFrameManager->AppendFrames(aLineFrame, nsnull, firstLineChildren);
|
|
}
|
|
}
|
|
else {
|
|
rv = NS_ERROR_OUT_OF_MEMORY;
|
|
}
|
|
|
|
return rv;
|
|
}
|
|
|
|
// Special routine to handle appending a new frame to a block frame's
|
|
// child list. Takes care of placing the new frame into the right
|
|
// place when first-line style is present.
|
|
nsresult
|
|
nsCSSFrameConstructor::AppendFirstLineFrames(
|
|
nsFrameConstructorState& aState,
|
|
nsIContent* aBlockContent,
|
|
nsIFrame* aBlockFrame,
|
|
nsFrameItems& aFrameItems)
|
|
{
|
|
// It's possible that aBlockFrame needs to have a first-line frame
|
|
// created because it doesn't currently have any children.
|
|
const nsFrameList& blockKids = aBlockFrame->GetChildList(nsnull);
|
|
if (blockKids.IsEmpty()) {
|
|
return WrapFramesInFirstLineFrame(aState, aBlockContent,
|
|
aBlockFrame, nsnull, aFrameItems);
|
|
}
|
|
|
|
// Examine the last block child - if it's a first-line frame then
|
|
// appended frames need special treatment.
|
|
nsIFrame* lastBlockKid = blockKids.LastChild();
|
|
if (lastBlockKid->GetType() != nsGkAtoms::lineFrame) {
|
|
// No first-line frame at the end of the list, therefore there is
|
|
// an intervening block between any first-line frame the frames
|
|
// we are appending. Therefore, we don't need any special
|
|
// treatment of the appended frames.
|
|
return NS_OK;
|
|
}
|
|
|
|
return WrapFramesInFirstLineFrame(aState, aBlockContent, aBlockFrame,
|
|
lastBlockKid, aFrameItems);
|
|
}
|
|
|
|
// Special routine to handle inserting a new frame into a block
|
|
// frame's child list. Takes care of placing the new frame into the
|
|
// right place when first-line style is present.
|
|
nsresult
|
|
nsCSSFrameConstructor::InsertFirstLineFrames(
|
|
nsFrameConstructorState& aState,
|
|
nsIContent* aContent,
|
|
nsIFrame* aBlockFrame,
|
|
nsIFrame** aParentFrame,
|
|
nsIFrame* aPrevSibling,
|
|
nsFrameItems& aFrameItems)
|
|
{
|
|
nsresult rv = NS_OK;
|
|
// XXXbz If you make this method actually do something, check to
|
|
// make sure that the caller is passing what you expect. In
|
|
// particular, which content is aContent? And audit the rest of
|
|
// this code too; it makes bogus assumptions and may not build.
|
|
#if 0
|
|
nsIFrame* parentFrame = *aParentFrame;
|
|
nsIFrame* newFrame = aFrameItems.childList;
|
|
PRBool isInline = IsInlineOutside(newFrame);
|
|
|
|
if (!aPrevSibling) {
|
|
// Insertion will become the first frame. Two cases: we either
|
|
// already have a first-line frame or we don't.
|
|
nsIFrame* firstBlockKid = aBlockFrame->GetFirstChild(nsnull);
|
|
if (firstBlockKid->GetType() == nsGkAtoms::lineFrame) {
|
|
// We already have a first-line frame
|
|
nsIFrame* lineFrame = firstBlockKid;
|
|
|
|
if (isInline) {
|
|
// Easy case: the new inline frame will go into the lineFrame.
|
|
ReparentFrame(aState.mFrameManager, lineFrame, newFrame);
|
|
aState.mFrameManager->InsertFrames(lineFrame, nsnull, nsnull,
|
|
newFrame);
|
|
|
|
// Since the frame is going into the lineFrame, don't let it
|
|
// go into the block too.
|
|
aFrameItems.childList = nsnull;
|
|
aFrameItems.lastChild = nsnull;
|
|
}
|
|
else {
|
|
// Harder case: We are about to insert a block level element
|
|
// before the first-line frame.
|
|
// XXX need a method to steal away frames from the line-frame
|
|
}
|
|
}
|
|
else {
|
|
// We do not have a first-line frame
|
|
if (isInline) {
|
|
// We now need a first-line frame to contain the inline frame.
|
|
nsIFrame* lineFrame = NS_NewFirstLineFrame(firstLineStyle);
|
|
if (!lineFrame) {
|
|
rv = NS_ERROR_OUT_OF_MEMORY;
|
|
}
|
|
|
|
if (NS_SUCCEEDED(rv)) {
|
|
// Lookup first-line style context
|
|
nsStyleContext* parentStyle =
|
|
nsFrame::CorrectStyleParentFrame(aBlockFrame,
|
|
nsCSSPseudoElements::firstLine)->
|
|
GetStyleContext();
|
|
nsRefPtr<nsStyleContext> firstLineStyle =
|
|
GetFirstLineStyle(aContent, parentStyle);
|
|
|
|
// Initialize the line frame
|
|
rv = InitAndRestoreFrame(aState, aContent, aBlockFrame,
|
|
nsnull, lineFrame);
|
|
|
|
// Make sure the caller inserts the lineFrame into the
|
|
// blocks list of children.
|
|
aFrameItems.childList = lineFrame;
|
|
aFrameItems.lastChild = lineFrame;
|
|
|
|
// Give the inline frames to the lineFrame <b>after</b>
|
|
// reparenting them
|
|
NS_ASSERTION(lineFrame->GetStyleContext() == firstLineStyle,
|
|
"Bogus style context on line frame");
|
|
ReparentFrame(aPresContext, lineFrame, newFrame);
|
|
lineFrame->SetInitialChildList(nsnull, newFrame);
|
|
}
|
|
}
|
|
else {
|
|
// Easy case: the regular insertion logic can insert the new
|
|
// frame because it's a block frame.
|
|
}
|
|
}
|
|
}
|
|
else {
|
|
// Insertion will not be the first frame.
|
|
nsIFrame* prevSiblingParent = aPrevSibling->GetParent();
|
|
if (prevSiblingParent == aBlockFrame) {
|
|
// Easy case: The prev-siblings parent is the block
|
|
// frame. Therefore the prev-sibling is not currently in a
|
|
// line-frame. Therefore the new frame which is going after it,
|
|
// regardless of type, is not going into a line-frame.
|
|
}
|
|
else {
|
|
// If the prevSiblingParent is not the block-frame then it must
|
|
// be a line-frame (if it were a letter-frame, that logic would
|
|
// already have adjusted the prev-sibling to be the
|
|
// letter-frame).
|
|
if (isInline) {
|
|
// Easy case: the insertion can go where the caller thinks it
|
|
// should go (which is into prevSiblingParent).
|
|
}
|
|
else {
|
|
// Block elements don't end up in line-frames, therefore
|
|
// change the insertion point to aBlockFrame. However, there
|
|
// might be more inline elements following aPrevSibling that
|
|
// need to be pulled out of the line-frame and become children
|
|
// of the block.
|
|
nsIFrame* nextSibling = aPrevSibling->GetNextSibling();
|
|
nsIFrame* nextLineFrame = prevSiblingParent->GetNextInFlow();
|
|
if (nextSibling || nextLineFrame) {
|
|
// Oy. We have work to do. Create a list of the new frames
|
|
// that are going into the block by stripping them away from
|
|
// the line-frame(s).
|
|
if (nextSibling) {
|
|
nsLineFrame* lineFrame = (nsLineFrame*) prevSiblingParent;
|
|
nsFrameList tail = lineFrame->StealFramesAfter(aPrevSibling);
|
|
// XXX do something with 'tail'
|
|
}
|
|
|
|
nsLineFrame* nextLineFrame = (nsLineFrame*) lineFrame;
|
|
for (;;) {
|
|
nextLineFrame = nextLineFrame->GetNextInFlow();
|
|
if (!nextLineFrame) {
|
|
break;
|
|
}
|
|
nsIFrame* kids = nextLineFrame->GetFirstChild(nsnull);
|
|
}
|
|
}
|
|
else {
|
|
// We got lucky: aPrevSibling was the last inline frame in
|
|
// the line-frame.
|
|
ReparentFrame(aState.mFrameManager, aBlockFrame, newFrame);
|
|
aState.mFrameManager->InsertFrames(aBlockFrame, nsnull,
|
|
prevSiblingParent, newFrame);
|
|
aFrameItems.childList = nsnull;
|
|
aFrameItems.lastChild = nsnull;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
#endif
|
|
return rv;
|
|
}
|
|
|
|
//----------------------------------------------------------------------
|
|
|
|
// First-letter support
|
|
|
|
// Determine how many characters in the text fragment apply to the
|
|
// first letter
|
|
static PRInt32
|
|
FirstLetterCount(const nsTextFragment* aFragment)
|
|
{
|
|
PRInt32 count = 0;
|
|
PRInt32 firstLetterLength = 0;
|
|
PRBool done = PR_FALSE;
|
|
|
|
PRInt32 i, n = aFragment->GetLength();
|
|
for (i = 0; i < n; i++) {
|
|
PRUnichar ch = aFragment->CharAt(i);
|
|
if (XP_IS_SPACE(ch)) {
|
|
if (firstLetterLength) {
|
|
done = PR_TRUE;
|
|
break;
|
|
}
|
|
count++;
|
|
continue;
|
|
}
|
|
// XXX I18n
|
|
if ((ch == '\'') || (ch == '\"')) {
|
|
if (firstLetterLength) {
|
|
done = PR_TRUE;
|
|
break;
|
|
}
|
|
// keep looping
|
|
firstLetterLength = 1;
|
|
}
|
|
else {
|
|
count++;
|
|
done = PR_TRUE;
|
|
break;
|
|
}
|
|
}
|
|
|
|
return count;
|
|
}
|
|
|
|
static PRBool
|
|
NeedFirstLetterContinuation(nsIContent* aContent)
|
|
{
|
|
NS_PRECONDITION(aContent, "null ptr");
|
|
|
|
PRBool result = PR_FALSE;
|
|
if (aContent) {
|
|
const nsTextFragment* frag = aContent->GetText();
|
|
if (frag) {
|
|
PRInt32 flc = FirstLetterCount(frag);
|
|
PRInt32 tl = frag->GetLength();
|
|
if (flc < tl) {
|
|
result = PR_TRUE;
|
|
}
|
|
}
|
|
}
|
|
return result;
|
|
}
|
|
|
|
static PRBool IsFirstLetterContent(nsIContent* aContent)
|
|
{
|
|
return aContent->TextLength() &&
|
|
!aContent->TextIsOnlyWhitespace();
|
|
}
|
|
|
|
/**
|
|
* Create a letter frame, only make it a floating frame.
|
|
*/
|
|
void
|
|
nsCSSFrameConstructor::CreateFloatingLetterFrame(
|
|
nsFrameConstructorState& aState,
|
|
nsIFrame* aBlockFrame,
|
|
nsIContent* aTextContent,
|
|
nsIFrame* aTextFrame,
|
|
nsIContent* aBlockContent,
|
|
nsIFrame* aParentFrame,
|
|
nsStyleContext* aStyleContext,
|
|
nsFrameItems& aResult)
|
|
{
|
|
// Create the first-letter-frame
|
|
nsresult rv;
|
|
nsIFrame* letterFrame;
|
|
nsStyleSet *styleSet = mPresShell->StyleSet();
|
|
|
|
letterFrame = NS_NewFirstLetterFrame(mPresShell, aStyleContext);
|
|
// We don't want to use a text content for a non-text frame (because we want
|
|
// its primary frame to be a text frame). So use its parent for the
|
|
// first-letter.
|
|
nsIContent* letterContent = aTextContent->GetParent();
|
|
nsIFrame* containingBlock = aState.GetGeometricParent(
|
|
aStyleContext->GetStyleDisplay(), aParentFrame);
|
|
InitAndRestoreFrame(aState, letterContent, containingBlock, nsnull,
|
|
letterFrame);
|
|
|
|
// Init the text frame to refer to the letter frame. Make sure we
|
|
// get a proper style context for it (the one passed in is for the
|
|
// letter frame and will have the float property set on it; the text
|
|
// frame shouldn't have that set).
|
|
nsRefPtr<nsStyleContext> textSC;
|
|
textSC = styleSet->ResolveStyleForNonElement(aStyleContext);
|
|
aTextFrame->SetStyleContextWithoutNotification(textSC);
|
|
InitAndRestoreFrame(aState, aTextContent, letterFrame, nsnull, aTextFrame);
|
|
|
|
// And then give the text frame to the letter frame
|
|
SetInitialSingleChild(letterFrame, aTextFrame);
|
|
|
|
// See if we will need to continue the text frame (does it contain
|
|
// more than just the first-letter text or not?) If it does, then we
|
|
// create (in advance) a continuation frame for it.
|
|
nsIFrame* nextTextFrame = nsnull;
|
|
if (NeedFirstLetterContinuation(aTextContent)) {
|
|
// Create continuation
|
|
rv = CreateContinuingFrame(aState.mPresContext, aTextFrame, aParentFrame,
|
|
&nextTextFrame);
|
|
if (NS_FAILED(rv)) {
|
|
letterFrame->Destroy();
|
|
return;
|
|
}
|
|
// Repair the continuations style context
|
|
nsStyleContext* parentStyleContext = aStyleContext->GetParent();
|
|
if (parentStyleContext) {
|
|
nsRefPtr<nsStyleContext> newSC;
|
|
newSC = styleSet->ResolveStyleForNonElement(parentStyleContext);
|
|
if (newSC) {
|
|
nextTextFrame->SetStyleContext(newSC);
|
|
}
|
|
}
|
|
}
|
|
|
|
NS_ASSERTION(aResult.IsEmpty(), "aResult should be an empty nsFrameItems!");
|
|
// Put the new float before any of the floats in the block we're doing
|
|
// first-letter for, that is, before any floats whose parent is
|
|
// containingBlock.
|
|
nsFrameList::FrameLinkEnumerator link(aState.mFloatedItems);
|
|
while (!link.AtEnd() && link.NextFrame()->GetParent() != containingBlock) {
|
|
link.Next();
|
|
}
|
|
|
|
rv = aState.AddChild(letterFrame, aResult, letterContent, aStyleContext,
|
|
aParentFrame, PR_FALSE, PR_TRUE, PR_FALSE, PR_TRUE,
|
|
link.PrevFrame());
|
|
|
|
if (nextTextFrame) {
|
|
if (NS_FAILED(rv)) {
|
|
nextTextFrame->Destroy();
|
|
} else {
|
|
aResult.AddChild(nextTextFrame);
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Create a new letter frame for aTextFrame. The letter frame will be
|
|
* a child of aParentFrame.
|
|
*/
|
|
nsresult
|
|
nsCSSFrameConstructor::CreateLetterFrame(nsIFrame* aBlockFrame,
|
|
nsIFrame* aBlockContinuation,
|
|
nsIContent* aTextContent,
|
|
nsIFrame* aParentFrame,
|
|
nsFrameItems& aResult)
|
|
{
|
|
NS_PRECONDITION(aTextContent->IsNodeOfType(nsINode::eTEXT),
|
|
"aTextContent isn't text");
|
|
NS_ASSERTION(nsLayoutUtils::GetAsBlock(aBlockFrame),
|
|
"Not a block frame?");
|
|
|
|
// Get style context for the first-letter-frame
|
|
nsStyleContext* parentStyleContext =
|
|
nsFrame::CorrectStyleParentFrame(aParentFrame,
|
|
nsCSSPseudoElements::firstLetter)->
|
|
GetStyleContext();
|
|
|
|
// Use content from containing block so that we can actually
|
|
// find a matching style rule.
|
|
nsIContent* blockContent = aBlockFrame->GetContent();
|
|
|
|
// Create first-letter style rule
|
|
nsRefPtr<nsStyleContext> sc = GetFirstLetterStyle(blockContent,
|
|
parentStyleContext);
|
|
if (sc) {
|
|
nsRefPtr<nsStyleContext> textSC;
|
|
textSC = mPresShell->StyleSet()->ResolveStyleForNonElement(sc);
|
|
|
|
// Create a new text frame (the original one will be discarded)
|
|
// pass a temporary stylecontext, the correct one will be set
|
|
// later. Start off by unsetting the primary frame for
|
|
// aTextContent, so it's no longer pointing to the to-be-destroyed
|
|
// frame.
|
|
// XXXbz it would be really nice to destroy the old frame _first_,
|
|
// then create the new one, so we could avoid this hack.
|
|
aTextContent->SetPrimaryFrame(nsnull);
|
|
nsIFrame* textFrame = NS_NewTextFrame(mPresShell, textSC);
|
|
|
|
NS_ASSERTION(aBlockContinuation == GetFloatContainingBlock(aParentFrame),
|
|
"Containing block is confused");
|
|
nsFrameConstructorState state(mPresShell, mFixedContainingBlock,
|
|
GetAbsoluteContainingBlock(aParentFrame),
|
|
aBlockContinuation);
|
|
|
|
// Create the right type of first-letter frame
|
|
const nsStyleDisplay* display = sc->GetStyleDisplay();
|
|
if (display->IsFloating()) {
|
|
// Make a floating first-letter frame
|
|
CreateFloatingLetterFrame(state, aBlockFrame, aTextContent, textFrame,
|
|
blockContent, aParentFrame, sc, aResult);
|
|
}
|
|
else {
|
|
// Make an inflow first-letter frame
|
|
nsIFrame* letterFrame = NS_NewFirstLetterFrame(mPresShell, sc);
|
|
|
|
if (letterFrame) {
|
|
// Initialize the first-letter-frame. We don't want to use a text
|
|
// content for a non-text frame (because we want its primary frame to
|
|
// be a text frame). So use its parent for the first-letter.
|
|
nsIContent* letterContent = aTextContent->GetParent();
|
|
letterFrame->Init(letterContent, aParentFrame, nsnull);
|
|
|
|
InitAndRestoreFrame(state, aTextContent, letterFrame, nsnull,
|
|
textFrame);
|
|
|
|
SetInitialSingleChild(letterFrame, textFrame);
|
|
aResult.Clear();
|
|
aResult.AddChild(letterFrame);
|
|
NS_ASSERTION(!aBlockFrame->GetPrevContinuation(),
|
|
"should have the first continuation here");
|
|
aBlockFrame->AddStateBits(NS_BLOCK_HAS_FIRST_LETTER_CHILD);
|
|
}
|
|
}
|
|
aTextContent->SetPrimaryFrame(textFrame);
|
|
}
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
nsresult
|
|
nsCSSFrameConstructor::WrapFramesInFirstLetterFrame(
|
|
nsIContent* aBlockContent,
|
|
nsIFrame* aBlockFrame,
|
|
nsFrameItems& aBlockFrames)
|
|
{
|
|
nsresult rv = NS_OK;
|
|
|
|
aBlockFrame->AddStateBits(NS_BLOCK_HAS_FIRST_LETTER_STYLE);
|
|
|
|
nsIFrame* parentFrame = nsnull;
|
|
nsIFrame* textFrame = nsnull;
|
|
nsIFrame* prevFrame = nsnull;
|
|
nsFrameItems letterFrames;
|
|
PRBool stopLooking = PR_FALSE;
|
|
rv = WrapFramesInFirstLetterFrame(aBlockFrame, aBlockFrame, aBlockFrame,
|
|
aBlockFrames.FirstChild(),
|
|
&parentFrame, &textFrame, &prevFrame,
|
|
letterFrames, &stopLooking);
|
|
if (NS_FAILED(rv)) {
|
|
return rv;
|
|
}
|
|
if (parentFrame) {
|
|
if (parentFrame == aBlockFrame) {
|
|
// Take textFrame out of the block's frame list and substitute the
|
|
// letter frame(s) instead.
|
|
aBlockFrames.DestroyFrame(textFrame);
|
|
aBlockFrames.InsertFrames(nsnull, prevFrame, letterFrames);
|
|
}
|
|
else {
|
|
// Take the old textFrame out of the inline parent's child list
|
|
mPresShell->FrameManager()->RemoveFrame(nsnull, textFrame);
|
|
|
|
// Insert in the letter frame(s)
|
|
parentFrame->InsertFrames(nsnull, prevFrame, letterFrames);
|
|
}
|
|
}
|
|
|
|
return rv;
|
|
}
|
|
|
|
nsresult
|
|
nsCSSFrameConstructor::WrapFramesInFirstLetterFrame(
|
|
nsIFrame* aBlockFrame,
|
|
nsIFrame* aBlockContinuation,
|
|
nsIFrame* aParentFrame,
|
|
nsIFrame* aParentFrameList,
|
|
nsIFrame** aModifiedParent,
|
|
nsIFrame** aTextFrame,
|
|
nsIFrame** aPrevFrame,
|
|
nsFrameItems& aLetterFrames,
|
|
PRBool* aStopLooking)
|
|
{
|
|
nsresult rv = NS_OK;
|
|
|
|
nsIFrame* prevFrame = nsnull;
|
|
nsIFrame* frame = aParentFrameList;
|
|
|
|
while (frame) {
|
|
nsIFrame* nextFrame = frame->GetNextSibling();
|
|
|
|
nsIAtom* frameType = frame->GetType();
|
|
if (nsGkAtoms::textFrame == frameType) {
|
|
// Wrap up first-letter content in a letter frame
|
|
nsIContent* textContent = frame->GetContent();
|
|
if (IsFirstLetterContent(textContent)) {
|
|
// Create letter frame to wrap up the text
|
|
rv = CreateLetterFrame(aBlockFrame, aBlockContinuation, textContent,
|
|
aParentFrame, aLetterFrames);
|
|
if (NS_FAILED(rv)) {
|
|
return rv;
|
|
}
|
|
|
|
// Provide adjustment information for parent
|
|
*aModifiedParent = aParentFrame;
|
|
*aTextFrame = frame;
|
|
*aPrevFrame = prevFrame;
|
|
*aStopLooking = PR_TRUE;
|
|
return NS_OK;
|
|
}
|
|
}
|
|
else if (IsInlineFrame(frame) && frameType != nsGkAtoms::brFrame) {
|
|
nsIFrame* kids = frame->GetFirstChild(nsnull);
|
|
WrapFramesInFirstLetterFrame(aBlockFrame, aBlockContinuation, frame,
|
|
kids, aModifiedParent, aTextFrame,
|
|
aPrevFrame, aLetterFrames, aStopLooking);
|
|
if (*aStopLooking) {
|
|
return NS_OK;
|
|
}
|
|
}
|
|
else {
|
|
// This will stop us looking to create more letter frames. For
|
|
// example, maybe the frame-type is "letterFrame" or
|
|
// "placeholderFrame". This keeps us from creating extra letter
|
|
// frames, and also prevents us from creating letter frames when
|
|
// the first real content child of a block is not text (e.g. an
|
|
// image, hr, etc.)
|
|
*aStopLooking = PR_TRUE;
|
|
break;
|
|
}
|
|
|
|
prevFrame = frame;
|
|
frame = nextFrame;
|
|
}
|
|
|
|
return rv;
|
|
}
|
|
|
|
nsresult
|
|
nsCSSFrameConstructor::RemoveFloatingFirstLetterFrames(
|
|
nsPresContext* aPresContext,
|
|
nsIPresShell* aPresShell,
|
|
nsFrameManager* aFrameManager,
|
|
nsIFrame* aBlockFrame,
|
|
PRBool* aStopLooking)
|
|
{
|
|
// First look for the float frame that is a letter frame
|
|
nsIFrame* floatFrame = aBlockFrame->GetFirstChild(nsGkAtoms::floatList);
|
|
while (floatFrame) {
|
|
// See if we found a floating letter frame
|
|
if (nsGkAtoms::letterFrame == floatFrame->GetType()) {
|
|
break;
|
|
}
|
|
floatFrame = floatFrame->GetNextSibling();
|
|
}
|
|
if (!floatFrame) {
|
|
// No such frame
|
|
return NS_OK;
|
|
}
|
|
|
|
// Take the text frame away from the letter frame (so it isn't
|
|
// destroyed when we destroy the letter frame).
|
|
nsIFrame* textFrame = floatFrame->GetFirstChild(nsnull);
|
|
if (!textFrame) {
|
|
return NS_OK;
|
|
}
|
|
|
|
// Discover the placeholder frame for the letter frame
|
|
nsIFrame* parentFrame;
|
|
nsPlaceholderFrame* placeholderFrame =
|
|
aFrameManager->GetPlaceholderFrameFor(floatFrame);
|
|
|
|
if (!placeholderFrame) {
|
|
// Somethings really wrong
|
|
return NS_OK;
|
|
}
|
|
parentFrame = placeholderFrame->GetParent();
|
|
if (!parentFrame) {
|
|
// Somethings really wrong
|
|
return NS_OK;
|
|
}
|
|
|
|
// Create a new text frame with the right style context that maps
|
|
// all of the content that was previously part of the letter frame
|
|
// (and probably continued elsewhere).
|
|
nsStyleContext* parentSC = parentFrame->GetStyleContext();
|
|
if (!parentSC) {
|
|
return NS_OK;
|
|
}
|
|
nsIContent* textContent = textFrame->GetContent();
|
|
if (!textContent) {
|
|
return NS_OK;
|
|
}
|
|
nsRefPtr<nsStyleContext> newSC;
|
|
newSC = aPresShell->StyleSet()->ResolveStyleForNonElement(parentSC);
|
|
if (!newSC) {
|
|
return NS_OK;
|
|
}
|
|
nsIFrame* newTextFrame = NS_NewTextFrame(aPresShell, newSC);
|
|
if (NS_UNLIKELY(!newTextFrame)) {
|
|
return NS_ERROR_OUT_OF_MEMORY;;
|
|
}
|
|
newTextFrame->Init(textContent, parentFrame, nsnull);
|
|
|
|
// Destroy the old text frame's continuations (the old text frame
|
|
// will be destroyed when its letter frame is destroyed).
|
|
nsIFrame* frameToDelete = textFrame->GetLastContinuation();
|
|
while (frameToDelete != textFrame) {
|
|
nsIFrame* nextFrameToDelete = frameToDelete->GetPrevContinuation();
|
|
aFrameManager->RemoveFrame(nsnull, frameToDelete);
|
|
frameToDelete = nextFrameToDelete;
|
|
}
|
|
|
|
nsIFrame* prevSibling = placeholderFrame->GetPrevSibling();
|
|
|
|
// Now that everything is set...
|
|
#ifdef NOISY_FIRST_LETTER
|
|
printf("RemoveFloatingFirstLetterFrames: textContent=%p oldTextFrame=%p newTextFrame=%p\n",
|
|
textContent.get(), textFrame, newTextFrame);
|
|
#endif
|
|
|
|
// Remove placeholder frame and the float
|
|
aFrameManager->RemoveFrame(nsnull, placeholderFrame);
|
|
|
|
// Now that the old frames are gone, we can start pointing to our
|
|
// new primary frame.
|
|
textContent->SetPrimaryFrame(newTextFrame);
|
|
|
|
// Insert text frame in its place
|
|
nsFrameList textList(newTextFrame, newTextFrame);
|
|
aFrameManager->InsertFrames(parentFrame, nsnull, prevSibling, textList);
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
nsresult
|
|
nsCSSFrameConstructor::RemoveFirstLetterFrames(nsPresContext* aPresContext,
|
|
nsIPresShell* aPresShell,
|
|
nsFrameManager* aFrameManager,
|
|
nsIFrame* aFrame,
|
|
nsIFrame* aBlockFrame,
|
|
PRBool* aStopLooking)
|
|
{
|
|
nsIFrame* prevSibling = nsnull;
|
|
nsIFrame* kid = aFrame->GetFirstChild(nsnull);
|
|
|
|
while (kid) {
|
|
if (nsGkAtoms::letterFrame == kid->GetType()) {
|
|
// Bingo. Found it. First steal away the text frame.
|
|
nsIFrame* textFrame = kid->GetFirstChild(nsnull);
|
|
if (!textFrame) {
|
|
break;
|
|
}
|
|
|
|
// Create a new textframe
|
|
nsStyleContext* parentSC = aFrame->GetStyleContext();
|
|
if (!parentSC) {
|
|
break;
|
|
}
|
|
nsIContent* textContent = textFrame->GetContent();
|
|
if (!textContent) {
|
|
break;
|
|
}
|
|
nsRefPtr<nsStyleContext> newSC;
|
|
newSC = aPresShell->StyleSet()->ResolveStyleForNonElement(parentSC);
|
|
if (!newSC) {
|
|
break;
|
|
}
|
|
textFrame = NS_NewTextFrame(aPresShell, newSC);
|
|
textFrame->Init(textContent, aFrame, nsnull);
|
|
|
|
// Next rip out the kid and replace it with the text frame
|
|
aFrameManager->RemoveFrame(nsnull, kid);
|
|
|
|
// Now that the old frames are gone, we can start pointing to our
|
|
// new primary frame.
|
|
textContent->SetPrimaryFrame(textFrame);
|
|
|
|
// Insert text frame in its place
|
|
nsFrameList textList(textFrame, textFrame);
|
|
aFrameManager->InsertFrames(aFrame, nsnull, prevSibling, textList);
|
|
|
|
*aStopLooking = PR_TRUE;
|
|
NS_ASSERTION(!aBlockFrame->GetPrevContinuation(),
|
|
"should have the first continuation here");
|
|
aBlockFrame->RemoveStateBits(NS_BLOCK_HAS_FIRST_LETTER_CHILD);
|
|
break;
|
|
}
|
|
else if (IsInlineFrame(kid)) {
|
|
// Look inside child inline frame for the letter frame
|
|
RemoveFirstLetterFrames(aPresContext, aPresShell, aFrameManager,
|
|
kid, aBlockFrame, aStopLooking);
|
|
if (*aStopLooking) {
|
|
break;
|
|
}
|
|
}
|
|
prevSibling = kid;
|
|
kid = kid->GetNextSibling();
|
|
}
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
nsresult
|
|
nsCSSFrameConstructor::RemoveLetterFrames(nsPresContext* aPresContext,
|
|
nsIPresShell* aPresShell,
|
|
nsFrameManager* aFrameManager,
|
|
nsIFrame* aBlockFrame)
|
|
{
|
|
aBlockFrame = aBlockFrame->GetFirstContinuation();
|
|
nsIFrame* continuation = aBlockFrame;
|
|
|
|
PRBool stopLooking = PR_FALSE;
|
|
nsresult rv;
|
|
do {
|
|
rv = RemoveFloatingFirstLetterFrames(aPresContext, aPresShell,
|
|
aFrameManager,
|
|
continuation, &stopLooking);
|
|
if (NS_SUCCEEDED(rv) && !stopLooking) {
|
|
rv = RemoveFirstLetterFrames(aPresContext, aPresShell, aFrameManager,
|
|
continuation, aBlockFrame, &stopLooking);
|
|
}
|
|
if (stopLooking) {
|
|
break;
|
|
}
|
|
continuation = continuation->GetNextContinuation();
|
|
} while (continuation);
|
|
return rv;
|
|
}
|
|
|
|
// Fixup the letter frame situation for the given block
|
|
nsresult
|
|
nsCSSFrameConstructor::RecoverLetterFrames(nsIFrame* aBlockFrame)
|
|
{
|
|
aBlockFrame = aBlockFrame->GetFirstContinuation();
|
|
nsIFrame* continuation = aBlockFrame;
|
|
|
|
nsIFrame* parentFrame = nsnull;
|
|
nsIFrame* textFrame = nsnull;
|
|
nsIFrame* prevFrame = nsnull;
|
|
nsFrameItems letterFrames;
|
|
PRBool stopLooking = PR_FALSE;
|
|
nsresult rv;
|
|
do {
|
|
// XXX shouldn't this bit be set already (bug 408493), assert instead?
|
|
continuation->AddStateBits(NS_BLOCK_HAS_FIRST_LETTER_STYLE);
|
|
rv = WrapFramesInFirstLetterFrame(aBlockFrame, continuation, continuation,
|
|
continuation->GetFirstChild(nsnull),
|
|
&parentFrame, &textFrame, &prevFrame,
|
|
letterFrames, &stopLooking);
|
|
if (NS_FAILED(rv)) {
|
|
return rv;
|
|
}
|
|
if (stopLooking) {
|
|
break;
|
|
}
|
|
continuation = continuation->GetNextContinuation();
|
|
} while (continuation);
|
|
|
|
if (parentFrame) {
|
|
// Take the old textFrame out of the parents child list
|
|
mPresShell->FrameManager()->RemoveFrame(nsnull, textFrame);
|
|
|
|
// Insert in the letter frame(s)
|
|
parentFrame->InsertFrames(nsnull, prevFrame, letterFrames);
|
|
}
|
|
return rv;
|
|
}
|
|
|
|
//----------------------------------------------------------------------
|
|
|
|
// listbox Widget Routines
|
|
|
|
nsresult
|
|
nsCSSFrameConstructor::CreateListBoxContent(nsPresContext* aPresContext,
|
|
nsIFrame* aParentFrame,
|
|
nsIFrame* aPrevFrame,
|
|
nsIContent* aChild,
|
|
nsIFrame** aNewFrame,
|
|
PRBool aIsAppend,
|
|
PRBool aIsScrollbar,
|
|
nsILayoutHistoryState* aFrameState)
|
|
{
|
|
#ifdef MOZ_XUL
|
|
nsresult rv = NS_OK;
|
|
|
|
// Construct a new frame
|
|
if (nsnull != aParentFrame) {
|
|
nsFrameItems frameItems;
|
|
nsFrameConstructorState state(mPresShell, mFixedContainingBlock,
|
|
GetAbsoluteContainingBlock(aParentFrame),
|
|
GetFloatContainingBlock(aParentFrame),
|
|
mTempFrameTreeState);
|
|
|
|
nsRefPtr<nsStyleContext> styleContext;
|
|
styleContext = ResolveStyleContext(aParentFrame, aChild, &state);
|
|
|
|
// Pre-check for display "none" - only if we find that, do we create
|
|
// any frame at all
|
|
const nsStyleDisplay* display = styleContext->GetStyleDisplay();
|
|
|
|
if (NS_STYLE_DISPLAY_NONE == display->mDisplay) {
|
|
*aNewFrame = nsnull;
|
|
return NS_OK;
|
|
}
|
|
|
|
BeginUpdate();
|
|
|
|
FrameConstructionItemList items;
|
|
AddFrameConstructionItemsInternal(state, aChild, aParentFrame,
|
|
aChild->Tag(), aChild->GetNameSpaceID(),
|
|
PR_TRUE, styleContext,
|
|
ITEM_ALLOW_XBL_BASE, items);
|
|
ConstructFramesFromItemList(state, items, aParentFrame, frameItems);
|
|
|
|
nsIFrame* newFrame = frameItems.FirstChild();
|
|
*aNewFrame = newFrame;
|
|
|
|
if (NS_SUCCEEDED(rv) && (nsnull != newFrame)) {
|
|
// Notify the parent frame
|
|
if (aIsAppend)
|
|
rv = ((nsListBoxBodyFrame*)aParentFrame)->ListBoxAppendFrames(frameItems);
|
|
else
|
|
rv = ((nsListBoxBodyFrame*)aParentFrame)->ListBoxInsertFrames(aPrevFrame, frameItems);
|
|
}
|
|
|
|
EndUpdate();
|
|
}
|
|
|
|
return rv;
|
|
#else
|
|
return NS_ERROR_FAILURE;
|
|
#endif
|
|
}
|
|
|
|
//----------------------------------------
|
|
|
|
nsresult
|
|
nsCSSFrameConstructor::ConstructBlock(nsFrameConstructorState& aState,
|
|
const nsStyleDisplay* aDisplay,
|
|
nsIContent* aContent,
|
|
nsIFrame* aParentFrame,
|
|
nsIFrame* aContentParentFrame,
|
|
nsStyleContext* aStyleContext,
|
|
nsIFrame** aNewFrame,
|
|
nsFrameItems& aFrameItems,
|
|
PRBool aAbsPosContainer,
|
|
PendingBinding* aPendingBinding)
|
|
{
|
|
// Create column wrapper if necessary
|
|
nsIFrame* blockFrame = *aNewFrame;
|
|
NS_ASSERTION(blockFrame->GetType() == nsGkAtoms::blockFrame, "not a block frame?");
|
|
nsIFrame* parent = aParentFrame;
|
|
nsRefPtr<nsStyleContext> blockStyle = aStyleContext;
|
|
const nsStyleColumn* columns = aStyleContext->GetStyleColumn();
|
|
|
|
if (columns->mColumnCount != NS_STYLE_COLUMN_COUNT_AUTO
|
|
|| columns->mColumnWidth.GetUnit() != eStyleUnit_Auto) {
|
|
nsIFrame* columnSetFrame = nsnull;
|
|
columnSetFrame = NS_NewColumnSetFrame(mPresShell, aStyleContext, 0);
|
|
if (!columnSetFrame) {
|
|
return NS_ERROR_OUT_OF_MEMORY;
|
|
}
|
|
|
|
InitAndRestoreFrame(aState, aContent, aParentFrame, nsnull, columnSetFrame);
|
|
blockStyle = mPresShell->StyleSet()->
|
|
ResolveAnonymousBoxStyle(nsCSSAnonBoxes::columnContent, aStyleContext);
|
|
parent = columnSetFrame;
|
|
*aNewFrame = columnSetFrame;
|
|
|
|
SetInitialSingleChild(columnSetFrame, blockFrame);
|
|
}
|
|
|
|
blockFrame->SetStyleContextWithoutNotification(blockStyle);
|
|
InitAndRestoreFrame(aState, aContent, parent, nsnull, blockFrame);
|
|
|
|
nsresult rv = aState.AddChild(*aNewFrame, aFrameItems, aContent,
|
|
aStyleContext,
|
|
aContentParentFrame ? aContentParentFrame :
|
|
aParentFrame);
|
|
if (NS_FAILED(rv)) {
|
|
return rv;
|
|
}
|
|
|
|
if (!mRootElementFrame) {
|
|
// The frame we're constructing will be the root element frame.
|
|
// Set mRootElementFrame before processing children.
|
|
mRootElementFrame = *aNewFrame;
|
|
}
|
|
|
|
// We should make the outer frame be the absolute containing block,
|
|
// if one is required. We have to do this because absolute
|
|
// positioning must be computed with respect to the CSS dimensions
|
|
// of the element, which are the dimensions of the outer block. But
|
|
// we can't really do that because only blocks can have absolute
|
|
// children. So use the block and try to compensate with hacks
|
|
// in nsBlockFrame::CalculateContainingBlockSizeForAbsolutes.
|
|
nsFrameConstructorSaveState absoluteSaveState;
|
|
if (aAbsPosContainer) {
|
|
// NS_ASSERTION(aRelPos, "should have made area frame for this");
|
|
aState.PushAbsoluteContainingBlock(blockFrame, absoluteSaveState);
|
|
}
|
|
|
|
// Process the child content
|
|
nsFrameItems childItems;
|
|
rv = ProcessChildren(aState, aContent, aStyleContext, blockFrame, PR_TRUE,
|
|
childItems, PR_TRUE, aPendingBinding);
|
|
|
|
// Set the frame's initial child list
|
|
blockFrame->SetInitialChildList(nsnull, childItems);
|
|
|
|
return rv;
|
|
}
|
|
|
|
nsresult
|
|
nsCSSFrameConstructor::ConstructInline(nsFrameConstructorState& aState,
|
|
FrameConstructionItem& aItem,
|
|
nsIFrame* aParentFrame,
|
|
const nsStyleDisplay* aDisplay,
|
|
nsFrameItems& aFrameItems,
|
|
nsIFrame** aNewFrame)
|
|
{
|
|
// If an inline frame has non-inline kids, then we chop up the child list
|
|
// into runs of blocks and runs of inlines, create anonymous block frames to
|
|
// contain the runs of blocks, inline frames with our style context for the
|
|
// runs of inlines, and put all these frames, in order, into aFrameItems. We
|
|
// put the first one into *aNewFrame. The whole setup is called an {ib}
|
|
// split; in what follows "frames in the split" refers to the anonymous blocks
|
|
// and inlines that contain our children.
|
|
//
|
|
// {ib} splits maintain the following invariants:
|
|
// 1) All frames in the split have the NS_FRAME_IS_SPECIAL bit set.
|
|
// 2) Each frame in the split has the nsIFrame::IBSplitSpecialSibling
|
|
// property pointing to the next frame in the split, except for the last
|
|
// one, which does not have it set.
|
|
// 3) Each frame in the split has the nsIFrame::IBSplitSpecialPrevSibling
|
|
// property pointing to the previous frame in the split, except for the
|
|
// first one, which does not have it set.
|
|
// 4) The first and last frame in the split are always inlines.
|
|
//
|
|
// An invariant that is NOT maintained is that the wrappers are actually
|
|
// linked via GetNextSibling linkage. A simple example is an inline
|
|
// containing an inline that contains a block. The three parts of the inner
|
|
// inline end up with three different parents.
|
|
//
|
|
// For example, this HTML:
|
|
// <span>
|
|
// <div>a</div>
|
|
// <span>
|
|
// b
|
|
// <div>c</div>
|
|
// </span>
|
|
// d
|
|
// <div>e</div>
|
|
// f
|
|
// </span>
|
|
// Gives the following frame tree:
|
|
//
|
|
// Inline (outer span)
|
|
// Block (anonymous, outer span)
|
|
// Block (div)
|
|
// Text("a")
|
|
// Inline (outer span)
|
|
// Inline (inner span)
|
|
// Text("b")
|
|
// Block (anonymous, outer span)
|
|
// Block (anonymous, inner span)
|
|
// Block (div)
|
|
// Text("c")
|
|
// Inline (outer span)
|
|
// Inline (inner span)
|
|
// Text("d")
|
|
// Block (anonymous, outer span)
|
|
// Block (div)
|
|
// Text("e")
|
|
// Inline (outer span)
|
|
// Text("f")
|
|
|
|
nsIContent* const content = aItem.mContent;
|
|
nsStyleContext* const styleContext = aItem.mStyleContext;
|
|
|
|
nsIFrame *newFrame;
|
|
|
|
PRBool positioned =
|
|
NS_STYLE_DISPLAY_INLINE == aDisplay->mDisplay &&
|
|
(NS_STYLE_POSITION_RELATIVE == aDisplay->mPosition ||
|
|
aDisplay->HasTransform());
|
|
if (positioned) {
|
|
newFrame = NS_NewPositionedInlineFrame(mPresShell, styleContext);
|
|
} else {
|
|
newFrame = NS_NewInlineFrame(mPresShell, styleContext);
|
|
}
|
|
|
|
// Initialize the frame
|
|
InitAndRestoreFrame(aState, content, aParentFrame, nsnull, newFrame);
|
|
|
|
nsFrameConstructorSaveState absoluteSaveState; // definition cannot be inside next block
|
|
// because the object's destructor is significant
|
|
// this is part of the fix for bug 42372
|
|
|
|
if (positioned) {
|
|
// Relatively positioned frames becomes a container for child
|
|
// frames that are positioned
|
|
aState.PushAbsoluteContainingBlock(newFrame, absoluteSaveState);
|
|
}
|
|
|
|
// Process the child content
|
|
nsFrameItems childItems;
|
|
nsresult rv = ConstructFramesFromItemList(aState, aItem.mChildItems, newFrame,
|
|
childItems);
|
|
if (NS_FAILED(rv)) {
|
|
// Clean up?
|
|
return rv;
|
|
}
|
|
|
|
nsFrameList::FrameLinkEnumerator firstBlockEnumerator(childItems);
|
|
if (!aItem.mIsAllInline) {
|
|
FindFirstBlock(firstBlockEnumerator);
|
|
}
|
|
|
|
if (aItem.mIsAllInline || firstBlockEnumerator.AtEnd()) {
|
|
// This part is easy. We either already know we have no non-inline kids,
|
|
// or haven't found any when constructing actual frames (the latter can
|
|
// happen only if out-of-flows that we thought had no containing block
|
|
// acquired one when ancestor inline frames and {ib} splits got
|
|
// constructed). Just put all the kids into the single inline frame and
|
|
// bail.
|
|
newFrame->SetInitialChildList(nsnull, childItems);
|
|
if (NS_SUCCEEDED(rv)) {
|
|
aState.AddChild(newFrame, aFrameItems, content, styleContext, aParentFrame);
|
|
*aNewFrame = newFrame;
|
|
}
|
|
return rv;
|
|
}
|
|
|
|
// This inline frame contains several types of children. Therefore this frame
|
|
// has to be chopped into several pieces, as described above.
|
|
|
|
// Grab the first inline's kids
|
|
nsFrameList firstInlineKids = childItems.ExtractHead(firstBlockEnumerator);
|
|
newFrame->SetInitialChildList(nsnull, firstInlineKids);
|
|
|
|
aFrameItems.AddChild(newFrame);
|
|
|
|
CreateIBSiblings(aState, newFrame, positioned, childItems, aFrameItems);
|
|
|
|
*aNewFrame = newFrame;
|
|
return NS_OK;
|
|
}
|
|
|
|
void
|
|
nsCSSFrameConstructor::CreateIBSiblings(nsFrameConstructorState& aState,
|
|
nsIFrame* aInitialInline,
|
|
PRBool aIsPositioned,
|
|
nsFrameItems& aChildItems,
|
|
nsFrameItems& aSiblings)
|
|
{
|
|
nsIContent* content = aInitialInline->GetContent();
|
|
nsStyleContext* styleContext = aInitialInline->GetStyleContext();
|
|
nsIFrame* parentFrame = aInitialInline->GetParent();
|
|
|
|
// Resolve the right style context for our anonymous blocks.
|
|
nsRefPtr<nsStyleContext> blockSC =
|
|
mPresShell->StyleSet()->
|
|
ResolveAnonymousBoxStyle(aIsPositioned ?
|
|
nsCSSAnonBoxes::mozAnonymousPositionedBlock :
|
|
nsCSSAnonBoxes::mozAnonymousBlock,
|
|
styleContext);
|
|
|
|
nsIFrame* lastNewInline = aInitialInline->GetFirstContinuation();
|
|
do {
|
|
// On entry to this loop aChildItems is not empty and the first frame in it
|
|
// is block-level.
|
|
NS_PRECONDITION(aChildItems.NotEmpty(), "Should have child items");
|
|
NS_PRECONDITION(!IsInlineOutside(aChildItems.FirstChild()),
|
|
"Must have list starting with block");
|
|
|
|
// The initial run of blocks belongs to an anonymous block that we create
|
|
// right now. The anonymous block will be the parent of these block
|
|
// children of the inline.
|
|
nsIFrame* blockFrame;
|
|
blockFrame = NS_NewBlockFrame(mPresShell, blockSC);
|
|
|
|
InitAndRestoreFrame(aState, content, parentFrame, nsnull, blockFrame,
|
|
PR_FALSE);
|
|
|
|
// Find the first non-block child which defines the end of our block kids
|
|
// and the start of our next inline's kids
|
|
nsFrameList::FrameLinkEnumerator firstNonBlock =
|
|
FindFirstNonBlock(aChildItems);
|
|
nsFrameList blockKids = aChildItems.ExtractHead(firstNonBlock);
|
|
|
|
MoveChildrenTo(aState.mPresContext, aInitialInline, blockFrame, blockKids);
|
|
|
|
SetFrameIsSpecial(lastNewInline, blockFrame);
|
|
aSiblings.AddChild(blockFrame);
|
|
|
|
// Now grab the initial inlines in aChildItems and put them into an inline
|
|
// frame
|
|
nsIFrame* inlineFrame;
|
|
if (aIsPositioned) {
|
|
inlineFrame = NS_NewPositionedInlineFrame(mPresShell, styleContext);
|
|
}
|
|
else {
|
|
inlineFrame = NS_NewInlineFrame(mPresShell, styleContext);
|
|
}
|
|
|
|
InitAndRestoreFrame(aState, content, parentFrame, nsnull, inlineFrame,
|
|
PR_FALSE);
|
|
|
|
if (aChildItems.NotEmpty()) {
|
|
nsFrameList::FrameLinkEnumerator firstBlock(aChildItems);
|
|
FindFirstBlock(firstBlock);
|
|
nsFrameList inlineKids = aChildItems.ExtractHead(firstBlock);
|
|
|
|
MoveChildrenTo(aState.mPresContext, aInitialInline, inlineFrame,
|
|
inlineKids);
|
|
}
|
|
|
|
SetFrameIsSpecial(blockFrame, inlineFrame);
|
|
aSiblings.AddChild(inlineFrame);
|
|
lastNewInline = inlineFrame;
|
|
} while (aChildItems.NotEmpty());
|
|
|
|
SetFrameIsSpecial(lastNewInline, nsnull);
|
|
}
|
|
|
|
void
|
|
nsCSSFrameConstructor::BuildInlineChildItems(nsFrameConstructorState& aState,
|
|
FrameConstructionItem& aParentItem)
|
|
{
|
|
// XXXbz should we preallocate aParentItem.mChildItems to some sane
|
|
// length? Maybe even to parentContent->GetChildCount()?
|
|
nsFrameConstructorState::PendingBindingAutoPusher
|
|
pusher(aState, aParentItem.mPendingBinding);
|
|
|
|
// Probe for generated content before
|
|
nsStyleContext* const parentStyleContext = aParentItem.mStyleContext;
|
|
nsIContent* const parentContent = aParentItem.mContent;
|
|
CreateGeneratedContentItem(aState, nsnull, parentContent, parentStyleContext,
|
|
nsCSSPseudoElements::ePseudo_before,
|
|
aParentItem.mChildItems);
|
|
|
|
ChildIterator iter, last;
|
|
for (ChildIterator::Init(parentContent, &iter, &last);
|
|
iter != last;
|
|
++iter) {
|
|
// Manually check for comments/PIs, since we don't have a frame to pass to
|
|
// AddFrameConstructionItems. We know our parent is a non-replaced inline,
|
|
// so there is no need to do the NeedFrameFor check.
|
|
nsIContent* content = *iter;
|
|
content->UnsetFlags(NODE_DESCENDANTS_NEED_FRAMES | NODE_NEEDS_FRAME);
|
|
if (content->IsNodeOfType(nsINode::eCOMMENT) ||
|
|
content->IsNodeOfType(nsINode::ePROCESSING_INSTRUCTION)) {
|
|
continue;
|
|
}
|
|
if (content->IsElement()) {
|
|
// See comment explaining why we need to remove the "is possible
|
|
// restyle root" flags in AddFrameConstructionItems. But note
|
|
// that we can remove all restyle flags, just like in
|
|
// ProcessChildren and for the same reason.
|
|
content->UnsetFlags(ELEMENT_ALL_RESTYLE_FLAGS);
|
|
}
|
|
|
|
nsRefPtr<nsStyleContext> childContext =
|
|
ResolveStyleContext(parentStyleContext, content, &aState);
|
|
|
|
AddFrameConstructionItemsInternal(aState, content, nsnull, content->Tag(),
|
|
content->GetNameSpaceID(),
|
|
iter.XBLInvolved(), childContext,
|
|
ITEM_ALLOW_XBL_BASE | ITEM_ALLOW_PAGE_BREAK,
|
|
aParentItem.mChildItems);
|
|
}
|
|
|
|
// Probe for generated content after
|
|
CreateGeneratedContentItem(aState, nsnull, parentContent, parentStyleContext,
|
|
nsCSSPseudoElements::ePseudo_after,
|
|
aParentItem.mChildItems);
|
|
|
|
aParentItem.mIsAllInline = aParentItem.mChildItems.AreAllItemsInline();
|
|
}
|
|
|
|
// return whether it's ok to append (in the AppendFrames sense) to
|
|
// aParentFrame if our nextSibling is aNextSibling. aParentFrame must
|
|
// be an {ib} special inline.
|
|
static PRBool
|
|
IsSafeToAppendToSpecialInline(nsIFrame* aParentFrame, nsIFrame* aNextSibling)
|
|
{
|
|
NS_PRECONDITION(IsInlineFrame(aParentFrame),
|
|
"Must have an inline parent here");
|
|
do {
|
|
NS_ASSERTION(IsFrameSpecial(aParentFrame), "How is this not special?");
|
|
if (aNextSibling || aParentFrame->GetNextContinuation() ||
|
|
GetSpecialSibling(aParentFrame)) {
|
|
return PR_FALSE;
|
|
}
|
|
|
|
aNextSibling = aParentFrame->GetNextSibling();
|
|
aParentFrame = aParentFrame->GetParent();
|
|
} while (IsInlineFrame(aParentFrame));
|
|
|
|
return PR_TRUE;
|
|
}
|
|
|
|
PRBool
|
|
nsCSSFrameConstructor::WipeContainingBlock(nsFrameConstructorState& aState,
|
|
nsIFrame* aContainingBlock,
|
|
nsIFrame* aFrame,
|
|
FrameConstructionItemList& aItems,
|
|
PRBool aIsAppend,
|
|
nsIFrame* aPrevSibling)
|
|
{
|
|
if (aItems.IsEmpty()) {
|
|
return PR_FALSE;
|
|
}
|
|
|
|
// Before we go and append the frames, we must check for several
|
|
// special situations.
|
|
|
|
// Situation #1 is a XUL frame that contains frames that are required
|
|
// to be wrapped in blocks.
|
|
if (aFrame->IsBoxFrame() &&
|
|
!(aFrame->GetStateBits() & NS_STATE_BOX_WRAPS_KIDS_IN_BLOCK) &&
|
|
aItems.AnyItemsNeedBlockParent()) {
|
|
RecreateFramesForContent(aFrame->GetContent(), PR_TRUE);
|
|
return PR_TRUE;
|
|
}
|
|
|
|
nsIFrame* nextSibling = ::GetInsertNextSibling(aFrame, aPrevSibling);
|
|
|
|
// Situation #2 is a case when table pseudo-frames don't work out right
|
|
ParentType parentType = GetParentType(aFrame);
|
|
// If all the kids want a parent of the type that aFrame is, then we're all
|
|
// set to go. Indeed, there won't be any table pseudo-frames created between
|
|
// aFrame and the kids, so those won't need to be merged with any table
|
|
// pseudo-frames that might already be kids of aFrame. If aFrame itself is a
|
|
// table pseudo-frame, then all the kids in this list would have wanted a
|
|
// frame of that type wrapping them anyway, so putting them inside it is ok.
|
|
if (!aItems.AllWantParentType(parentType)) {
|
|
// Don't give up yet. If parentType is not eTypeBlock and the parent is
|
|
// not a generated content frame, then try filtering whitespace out of the
|
|
// list.
|
|
if (parentType != eTypeBlock && !aFrame->IsGeneratedContentFrame()) {
|
|
// For leading whitespace followed by a kid that wants our parent type,
|
|
// there are four cases:
|
|
// 1) We have a previous sibling which is not a table pseudo. That means
|
|
// that previous sibling wanted a (non-block) parent of the type we're
|
|
// looking at. Then the whitespace comes between two table-internal
|
|
// elements, so should be collapsed out.
|
|
// 2) We have a previous sibling which is a table pseudo. It might have
|
|
// kids who want this whitespace, so we need to reframe.
|
|
// 3) We have no previous sibling and our parent frame is not a table
|
|
// pseudo. That means that we'll be at the beginning of our actual
|
|
// non-block-type parent, and the whitespace is OK to collapse out.
|
|
// If something is ever inserted before us, it'll find our own parent
|
|
// as its parent and if it's something that would care about the
|
|
// whitespace it'll want a block parent, so it'll trigger a reframe at
|
|
// that point.
|
|
// 4) We have no previous sibling and our parent frame is a table pseudo.
|
|
// Need to reframe.
|
|
// All that is predicated on finding the correct previous sibling. We
|
|
// might have to walk backwards along continuations from aFrame to do so.
|
|
//
|
|
// It's always OK to drop whitespace between any two items that want a
|
|
// parent of type parentType.
|
|
//
|
|
// For trailing whitespace preceded by a kid that wants our parent type,
|
|
// there are four cases:
|
|
// 1) We have a next sibling which is not a table pseudo. That means
|
|
// that next sibling wanted a (non-block) parent of the type we're
|
|
// looking at. Then the whitespace comes between two table-internal
|
|
// elements, so should be collapsed out.
|
|
// 2) We have a next sibling which is a table pseudo. It might have
|
|
// kids who want this whitespace, so we need to reframe.
|
|
// 3) We have no next sibling and our parent frame is not a table
|
|
// pseudo. That means that we'll be at the end of our actual
|
|
// non-block-type parent, and the whitespace is OK to collapse out.
|
|
// If something is ever inserted after us, it'll find our own parent
|
|
// as its parent and if it's something that would care about the
|
|
// whitespace it'll want a block parent, so it'll trigger a reframe at
|
|
// that point.
|
|
// 4) We have no next sibling and our parent frame is a table pseudo.
|
|
// Need to reframe.
|
|
// All that is predicated on finding the correct next sibling. We might
|
|
// have to walk forward along continuations from aFrame to do so. That
|
|
// said, in the case when nextSibling is null at this point and aIsAppend
|
|
// is true, we know we're in case 3. Furthermore, in that case we don't
|
|
// even have to worry about the table pseudo situation; we know our
|
|
// parent is not a table pseudo there.
|
|
FCItemIterator iter(aItems);
|
|
FCItemIterator start(iter);
|
|
do {
|
|
if (iter.SkipItemsWantingParentType(parentType)) {
|
|
break;
|
|
}
|
|
|
|
// iter points to an item that wants a different parent. If it's not
|
|
// whitespace, we're done; no more point scanning the list.
|
|
if (!iter.item().IsWhitespace(aState)) {
|
|
break;
|
|
}
|
|
|
|
if (iter == start) {
|
|
// Leading whitespace. How to handle this depends on our
|
|
// previous sibling and aFrame. See the long comment above.
|
|
nsIFrame* prevSibling = aPrevSibling;
|
|
if (!prevSibling) {
|
|
// Try to find one after all
|
|
nsIFrame* parentPrevCont = aFrame->GetPrevContinuation();
|
|
while (parentPrevCont) {
|
|
prevSibling = parentPrevCont->GetLastChild(nsnull);
|
|
if (prevSibling) {
|
|
break;
|
|
}
|
|
parentPrevCont = parentPrevCont->GetPrevContinuation();
|
|
}
|
|
};
|
|
if (prevSibling) {
|
|
if (IsTablePseudo(prevSibling)) {
|
|
// need to reframe
|
|
break;
|
|
}
|
|
} else if (IsTablePseudo(aFrame)) {
|
|
// need to reframe
|
|
break;
|
|
}
|
|
}
|
|
|
|
FCItemIterator spaceEndIter(iter);
|
|
// Advance spaceEndIter past any whitespace
|
|
PRBool trailingSpaces = spaceEndIter.SkipWhitespace(aState);
|
|
|
|
PRBool okToDrop;
|
|
if (trailingSpaces) {
|
|
// Trailing whitespace. How to handle this depeds on aIsAppend, our
|
|
// next sibling and aFrame. See the long comment above.
|
|
okToDrop = aIsAppend && !nextSibling;
|
|
if (!okToDrop) {
|
|
if (!nextSibling) {
|
|
// Try to find one after all
|
|
nsIFrame* parentNextCont = aFrame->GetNextContinuation();
|
|
while (parentNextCont) {
|
|
nextSibling = parentNextCont->GetFirstChild(nsnull);
|
|
if (nextSibling) {
|
|
break;
|
|
}
|
|
parentNextCont = parentNextCont->GetNextContinuation();
|
|
}
|
|
}
|
|
|
|
okToDrop = (nextSibling && !IsTablePseudo(nextSibling)) ||
|
|
(!nextSibling && !IsTablePseudo(aFrame));
|
|
}
|
|
#ifdef DEBUG
|
|
else {
|
|
NS_ASSERTION(!IsTablePseudo(aFrame), "How did that happen?");
|
|
}
|
|
#endif
|
|
} else {
|
|
okToDrop = (spaceEndIter.item().DesiredParentType() == parentType);
|
|
}
|
|
|
|
if (okToDrop) {
|
|
iter.DeleteItemsTo(spaceEndIter);
|
|
} else {
|
|
// We're done: we don't want to drop the whitespace, and it has the
|
|
// wrong parent type.
|
|
break;
|
|
}
|
|
|
|
// Now loop, since |iter| points to item right after the whitespace we
|
|
// removed.
|
|
} while (!iter.IsDone());
|
|
}
|
|
|
|
// We might be able to figure out some sort of optimizations here, but they
|
|
// would have to depend on having a correct aPrevSibling and a correct next
|
|
// sibling. For example, we can probably avoid reframing if none of
|
|
// aFrame, aPrevSibling, and next sibling are table pseudo-frames. But it
|
|
// doesn't seem worth it to worry about that for now, especially since we
|
|
// in fact do not have a reliable aPrevSibling, nor any next sibling, in
|
|
// this method.
|
|
|
|
// aItems might have changed, so recheck the parent type thing. In fact,
|
|
// it might be empty, so recheck that too.
|
|
if (aItems.IsEmpty()) {
|
|
return PR_FALSE;
|
|
}
|
|
|
|
if (!aItems.AllWantParentType(parentType)) {
|
|
// Reframing aFrame->GetContent() is good enough, since the content of
|
|
// table pseudo-frames is the ancestor content.
|
|
RecreateFramesForContent(aFrame->GetContent(), PR_TRUE);
|
|
return PR_TRUE;
|
|
}
|
|
}
|
|
|
|
// Now we have several cases involving {ib} splits. Put them all in a
|
|
// do/while with breaks to take us to the "go and reconstruct" code.
|
|
do {
|
|
if (IsInlineFrame(aFrame)) {
|
|
if (aItems.AreAllItemsInline()) {
|
|
// We can just put the kids in.
|
|
return PR_FALSE;
|
|
}
|
|
|
|
if (!IsFrameSpecial(aFrame)) {
|
|
// Need to go ahead and reconstruct.
|
|
break;
|
|
}
|
|
|
|
// Now we're adding kids including some blocks to an inline part of an
|
|
// {ib} split. If we plan to call AppendFrames, and don't have a next
|
|
// sibling for the new frames, and our parent is the last continuation of
|
|
// the last part of the {ib} split, and the same is true of all our
|
|
// ancestor inlines (they have no following continuations and they're the
|
|
// last part of their {ib} splits and we'd be adding to the end for all
|
|
// of them), then AppendFrames will handle things for us. Bail out in
|
|
// that case.
|
|
if (aIsAppend && IsSafeToAppendToSpecialInline(aFrame, nextSibling)) {
|
|
return PR_FALSE;
|
|
}
|
|
|
|
// Need to reconstruct.
|
|
break;
|
|
}
|
|
|
|
// Now we know we have a block parent. If it's not special, we're all set.
|
|
if (!IsFrameSpecial(aFrame)) {
|
|
return PR_FALSE;
|
|
}
|
|
|
|
// We're adding some kids to a block part of an {ib} split. If all the
|
|
// kids are blocks, we don't need to reconstruct.
|
|
if (aItems.AreAllItemsBlock()) {
|
|
return PR_FALSE;
|
|
}
|
|
|
|
// We might have some inline kids for this block. Just reconstruct.
|
|
break;
|
|
} while (0);
|
|
|
|
// If we don't have a containing block, start with aFrame and look for one.
|
|
if (!aContainingBlock) {
|
|
aContainingBlock = aFrame;
|
|
}
|
|
|
|
// To find the right block to reframe, just walk up the tree until we find a
|
|
// frame that is:
|
|
// 1) Not part of an IB split (not special)
|
|
// 2) Not a pseudo-frame
|
|
// 3) Not an inline frame
|
|
// We're guaranteed to find one, since nsStyleContext::ApplyStyleFixups
|
|
// enforces that the root is display:none, display:table, or display:block.
|
|
// Note that walking up "too far" is OK in terms of correctness, even if it
|
|
// might be a little inefficient. This is why we walk out of all
|
|
// pseudo-frames -- telling which ones are or are not OK to walk out of is
|
|
// too hard (and I suspect that we do in fact need to walk out of all of
|
|
// them).
|
|
while (IsFrameSpecial(aContainingBlock) || IsInlineOutside(aContainingBlock) ||
|
|
aContainingBlock->GetStyleContext()->GetPseudo()) {
|
|
aContainingBlock = aContainingBlock->GetParent();
|
|
NS_ASSERTION(aContainingBlock,
|
|
"Must have non-inline, non-special, non-pseudo frame as root "
|
|
"(or child of root, for a table root)!");
|
|
}
|
|
|
|
// Tell parent of the containing block to reformulate the
|
|
// entire block. This is painful and definitely not optimal
|
|
// but it will *always* get the right answer.
|
|
|
|
nsIContent *blockContent = aContainingBlock->GetContent();
|
|
#ifdef DEBUG
|
|
if (gNoisyContentUpdates) {
|
|
printf("nsCSSFrameConstructor::WipeContainingBlock: blockContent=%p\n",
|
|
static_cast<void*>(blockContent));
|
|
}
|
|
#endif
|
|
RecreateFramesForContent(blockContent, PR_TRUE);
|
|
return PR_TRUE;
|
|
}
|
|
|
|
nsresult
|
|
nsCSSFrameConstructor::ReframeContainingBlock(nsIFrame* aFrame)
|
|
{
|
|
|
|
#ifdef DEBUG
|
|
// ReframeContainingBlock is a NASTY routine, it causes terrible performance problems
|
|
// so I want to see when it is happening! Unfortunately, it is happening way to often because
|
|
// so much content on the web causes 'special' block-in-inline frame situations and we handle them
|
|
// very poorly
|
|
if (gNoisyContentUpdates) {
|
|
printf("nsCSSFrameConstructor::ReframeContainingBlock frame=%p\n",
|
|
static_cast<void*>(aFrame));
|
|
}
|
|
#endif
|
|
|
|
// XXXbz how exactly would we get here while isReflowing anyway? Should this
|
|
// whole test be ifdef DEBUG?
|
|
if (mPresShell->IsReflowLocked()) {
|
|
// don't ReframeContainingBlock, this will result in a crash
|
|
// if we remove a tree that's in reflow - see bug 121368 for testcase
|
|
NS_ERROR("Atemptted to nsCSSFrameConstructor::ReframeContainingBlock during a Reflow!!!");
|
|
return NS_OK;
|
|
}
|
|
|
|
// Get the first "normal" ancestor of the target frame.
|
|
nsIFrame* containingBlock = GetIBContainingBlockFor(aFrame);
|
|
if (containingBlock) {
|
|
// From here we look for the containing block in case the target
|
|
// frame is already a block (which can happen when an inline frame
|
|
// wraps some of its content in an anonymous block; see
|
|
// ConstructInline)
|
|
|
|
// NOTE: We used to get the FloatContainingBlock here, but it was often wrong.
|
|
// GetIBContainingBlock works much better and provides the correct container in all cases
|
|
// so GetFloatContainingBlock(aFrame) has been removed
|
|
|
|
// And get the containingBlock's content
|
|
nsCOMPtr<nsIContent> blockContent = containingBlock->GetContent();
|
|
if (blockContent) {
|
|
#ifdef DEBUG
|
|
if (gNoisyContentUpdates) {
|
|
printf(" ==> blockContent=%p\n", static_cast<void*>(blockContent));
|
|
}
|
|
#endif
|
|
return RecreateFramesForContent(blockContent, PR_TRUE);
|
|
}
|
|
}
|
|
|
|
// If we get here, we're screwed!
|
|
return RecreateFramesForContent(mPresShell->GetDocument()->GetRootElement(),
|
|
PR_TRUE);
|
|
}
|
|
|
|
void
|
|
nsCSSFrameConstructor::RestyleForEmptyChange(Element* aContainer)
|
|
{
|
|
// In some cases (:empty + E, :empty ~ E), a change if the content of
|
|
// an element requires restyling its parent's siblings.
|
|
nsRestyleHint hint = eRestyle_Subtree;
|
|
nsIContent* grandparent = aContainer->GetParent();
|
|
if (grandparent &&
|
|
(grandparent->GetFlags() & NODE_HAS_SLOW_SELECTOR_LATER_SIBLINGS)) {
|
|
hint = nsRestyleHint(hint | eRestyle_LaterSiblings);
|
|
}
|
|
PostRestyleEvent(aContainer, hint, NS_STYLE_HINT_NONE);
|
|
}
|
|
|
|
void
|
|
nsCSSFrameConstructor::RestyleForAppend(Element* aContainer,
|
|
nsIContent* aFirstNewContent)
|
|
{
|
|
NS_ASSERTION(aContainer, "must have container for append");
|
|
#ifdef DEBUG
|
|
{
|
|
for (nsIContent* cur = aFirstNewContent; cur; cur = cur->GetNextSibling()) {
|
|
NS_ASSERTION(!cur->IsRootOfAnonymousSubtree(),
|
|
"anonymous nodes should not be in child lists");
|
|
}
|
|
}
|
|
#endif
|
|
PRUint32 selectorFlags =
|
|
aContainer->GetFlags() & (NODE_ALL_SELECTOR_FLAGS &
|
|
~NODE_HAS_SLOW_SELECTOR_LATER_SIBLINGS);
|
|
if (selectorFlags == 0)
|
|
return;
|
|
|
|
if (selectorFlags & NODE_HAS_EMPTY_SELECTOR) {
|
|
// see whether we need to restyle the container
|
|
PRBool wasEmpty = PR_TRUE; // :empty or :-moz-only-whitespace
|
|
for (nsIContent* cur = aContainer->GetFirstChild();
|
|
cur != aFirstNewContent;
|
|
cur = cur->GetNextSibling()) {
|
|
// We don't know whether we're testing :empty or :-moz-only-whitespace,
|
|
// so be conservative and assume :-moz-only-whitespace (i.e., make
|
|
// IsSignificantChild less likely to be true, and thus make us more
|
|
// likely to restyle).
|
|
if (nsStyleUtil::IsSignificantChild(cur, PR_TRUE, PR_FALSE)) {
|
|
wasEmpty = PR_FALSE;
|
|
break;
|
|
}
|
|
}
|
|
if (wasEmpty) {
|
|
RestyleForEmptyChange(aContainer);
|
|
return;
|
|
}
|
|
}
|
|
|
|
if (selectorFlags & NODE_HAS_SLOW_SELECTOR) {
|
|
PostRestyleEvent(aContainer, eRestyle_Subtree, NS_STYLE_HINT_NONE);
|
|
// Restyling the container is the most we can do here, so we're done.
|
|
return;
|
|
}
|
|
|
|
if (selectorFlags & NODE_HAS_EDGE_CHILD_SELECTOR) {
|
|
// restyle the last element child before this node
|
|
for (nsIContent* cur = aFirstNewContent->GetPreviousSibling();
|
|
cur;
|
|
cur = cur->GetPreviousSibling()) {
|
|
if (cur->IsElement()) {
|
|
PostRestyleEvent(cur->AsElement(), eRestyle_Subtree, NS_STYLE_HINT_NONE);
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
// Needed since we can't use PostRestyleEvent on non-elements (with
|
|
// eRestyle_LaterSiblings or nsRestyleHint(eRestyle_Subtree |
|
|
// eRestyle_LaterSiblings) as appropriate).
|
|
static void
|
|
RestyleSiblingsStartingWith(nsCSSFrameConstructor *aFrameConstructor,
|
|
nsIContent *aStartingSibling /* may be null */)
|
|
{
|
|
for (nsIContent *sibling = aStartingSibling; sibling;
|
|
sibling = sibling->GetNextSibling()) {
|
|
if (sibling->IsElement()) {
|
|
aFrameConstructor->
|
|
PostRestyleEvent(sibling->AsElement(),
|
|
nsRestyleHint(eRestyle_Subtree | eRestyle_LaterSiblings),
|
|
NS_STYLE_HINT_NONE);
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
// Restyling for a ContentInserted or CharacterDataChanged notification.
|
|
// This could be used for ContentRemoved as well if we got the
|
|
// notification before the removal happened (and sometimes
|
|
// CharacterDataChanged is more like a removal than an addition).
|
|
// The comments are written and variables are named in terms of it being
|
|
// a ContentInserted notification.
|
|
void
|
|
nsCSSFrameConstructor::RestyleForInsertOrChange(Element* aContainer,
|
|
nsIContent* aChild)
|
|
{
|
|
NS_ASSERTION(!aChild->IsRootOfAnonymousSubtree(),
|
|
"anonymous nodes should not be in child lists");
|
|
PRUint32 selectorFlags =
|
|
aContainer ? (aContainer->GetFlags() & NODE_ALL_SELECTOR_FLAGS) : 0;
|
|
if (selectorFlags == 0)
|
|
return;
|
|
|
|
if (selectorFlags & NODE_HAS_EMPTY_SELECTOR) {
|
|
// see whether we need to restyle the container
|
|
PRBool wasEmpty = PR_TRUE; // :empty or :-moz-only-whitespace
|
|
for (nsIContent* child = aContainer->GetFirstChild();
|
|
child;
|
|
child = child->GetNextSibling()) {
|
|
if (child == aChild)
|
|
continue;
|
|
// We don't know whether we're testing :empty or :-moz-only-whitespace,
|
|
// so be conservative and assume :-moz-only-whitespace (i.e., make
|
|
// IsSignificantChild less likely to be true, and thus make us more
|
|
// likely to restyle).
|
|
if (nsStyleUtil::IsSignificantChild(child, PR_TRUE, PR_FALSE)) {
|
|
wasEmpty = PR_FALSE;
|
|
break;
|
|
}
|
|
}
|
|
if (wasEmpty) {
|
|
RestyleForEmptyChange(aContainer);
|
|
return;
|
|
}
|
|
}
|
|
|
|
if (selectorFlags & NODE_HAS_SLOW_SELECTOR) {
|
|
PostRestyleEvent(aContainer, eRestyle_Subtree, NS_STYLE_HINT_NONE);
|
|
// Restyling the container is the most we can do here, so we're done.
|
|
return;
|
|
}
|
|
|
|
if (selectorFlags & NODE_HAS_SLOW_SELECTOR_LATER_SIBLINGS) {
|
|
// Restyle all later siblings.
|
|
RestyleSiblingsStartingWith(this, aChild->GetNextSibling());
|
|
}
|
|
|
|
if (selectorFlags & NODE_HAS_EDGE_CHILD_SELECTOR) {
|
|
// restyle the previously-first element child if it is after this node
|
|
PRBool passedChild = PR_FALSE;
|
|
for (nsIContent* content = aContainer->GetFirstChild();
|
|
content;
|
|
content = content->GetNextSibling()) {
|
|
if (content == aChild) {
|
|
passedChild = PR_TRUE;
|
|
continue;
|
|
}
|
|
if (content->IsElement()) {
|
|
if (passedChild) {
|
|
PostRestyleEvent(content->AsElement(), eRestyle_Subtree,
|
|
NS_STYLE_HINT_NONE);
|
|
}
|
|
break;
|
|
}
|
|
}
|
|
// restyle the previously-last element child if it is before this node
|
|
passedChild = PR_FALSE;
|
|
for (nsIContent* content = aContainer->GetLastChild();
|
|
content;
|
|
content = content->GetPreviousSibling()) {
|
|
if (content == aChild) {
|
|
passedChild = PR_TRUE;
|
|
continue;
|
|
}
|
|
if (content->IsElement()) {
|
|
if (passedChild) {
|
|
PostRestyleEvent(content->AsElement(), eRestyle_Subtree,
|
|
NS_STYLE_HINT_NONE);
|
|
}
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
void
|
|
nsCSSFrameConstructor::RestyleForRemove(Element* aContainer,
|
|
nsIContent* aOldChild,
|
|
nsIContent* aFollowingSibling)
|
|
{
|
|
NS_ASSERTION(!aOldChild->IsRootOfAnonymousSubtree(),
|
|
"anonymous nodes should not be in child lists");
|
|
PRUint32 selectorFlags =
|
|
aContainer ? (aContainer->GetFlags() & NODE_ALL_SELECTOR_FLAGS) : 0;
|
|
if (selectorFlags == 0)
|
|
return;
|
|
|
|
if (selectorFlags & NODE_HAS_EMPTY_SELECTOR) {
|
|
// see whether we need to restyle the container
|
|
PRBool isEmpty = PR_TRUE; // :empty or :-moz-only-whitespace
|
|
for (nsIContent* child = aContainer->GetFirstChild();
|
|
child;
|
|
child = child->GetNextSibling()) {
|
|
// We don't know whether we're testing :empty or :-moz-only-whitespace,
|
|
// so be conservative and assume :-moz-only-whitespace (i.e., make
|
|
// IsSignificantChild less likely to be true, and thus make us more
|
|
// likely to restyle).
|
|
if (nsStyleUtil::IsSignificantChild(child, PR_TRUE, PR_FALSE)) {
|
|
isEmpty = PR_FALSE;
|
|
break;
|
|
}
|
|
}
|
|
if (isEmpty) {
|
|
RestyleForEmptyChange(aContainer);
|
|
return;
|
|
}
|
|
}
|
|
|
|
if (selectorFlags & NODE_HAS_SLOW_SELECTOR) {
|
|
PostRestyleEvent(aContainer, eRestyle_Subtree, NS_STYLE_HINT_NONE);
|
|
// Restyling the container is the most we can do here, so we're done.
|
|
return;
|
|
}
|
|
|
|
if (selectorFlags & NODE_HAS_SLOW_SELECTOR_LATER_SIBLINGS) {
|
|
// Restyle all later siblings.
|
|
RestyleSiblingsStartingWith(this, aFollowingSibling);
|
|
}
|
|
|
|
if (selectorFlags & NODE_HAS_EDGE_CHILD_SELECTOR) {
|
|
// restyle the now-first element child if it was after aOldChild
|
|
PRBool reachedFollowingSibling = PR_FALSE;
|
|
for (nsIContent* content = aContainer->GetFirstChild();
|
|
content;
|
|
content = content->GetNextSibling()) {
|
|
if (content == aFollowingSibling) {
|
|
reachedFollowingSibling = PR_TRUE;
|
|
// do NOT continue here; we might want to restyle this node
|
|
}
|
|
if (content->IsElement()) {
|
|
if (reachedFollowingSibling) {
|
|
PostRestyleEvent(content->AsElement(), eRestyle_Subtree,
|
|
NS_STYLE_HINT_NONE);
|
|
}
|
|
break;
|
|
}
|
|
}
|
|
// restyle the now-last element child if it was before aOldChild
|
|
reachedFollowingSibling = (aFollowingSibling == nsnull);
|
|
for (nsIContent* content = aContainer->GetLastChild();
|
|
content;
|
|
content = content->GetPreviousSibling()) {
|
|
if (content->IsElement()) {
|
|
if (reachedFollowingSibling) {
|
|
PostRestyleEvent(content->AsElement(), eRestyle_Subtree, NS_STYLE_HINT_NONE);
|
|
}
|
|
break;
|
|
}
|
|
if (content == aFollowingSibling) {
|
|
reachedFollowingSibling = PR_TRUE;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
|
|
void
|
|
nsCSSFrameConstructor::RebuildAllStyleData(nsChangeHint aExtraHint)
|
|
{
|
|
NS_ASSERTION(!(aExtraHint & nsChangeHint_ReconstructFrame),
|
|
"Should not reconstruct the root of the frame tree. "
|
|
"Use ReconstructDocElementHierarchy instead.");
|
|
|
|
mRebuildAllStyleData = PR_FALSE;
|
|
NS_UpdateHint(aExtraHint, mRebuildAllExtraHint);
|
|
mRebuildAllExtraHint = nsChangeHint(0);
|
|
|
|
if (!mPresShell || !mPresShell->GetRootFrame())
|
|
return;
|
|
|
|
// Make sure that the viewmanager will outlive the presshell
|
|
nsIViewManager::UpdateViewBatch batch(mPresShell->GetViewManager());
|
|
|
|
// Processing the style changes could cause a flush that propagates to
|
|
// the parent frame and thus destroys the pres shell.
|
|
nsCOMPtr<nsIPresShell> kungFuDeathGrip(mPresShell);
|
|
|
|
// We may reconstruct frames below and hence process anything that is in the
|
|
// tree. We don't want to get notified to process those items again after.
|
|
mPresShell->GetDocument()->FlushPendingNotifications(Flush_ContentAndNotify);
|
|
|
|
nsAutoScriptBlocker scriptBlocker;
|
|
|
|
// Tell the style set to get the old rule tree out of the way
|
|
// so we can recalculate while maintaining rule tree immutability
|
|
nsresult rv = mPresShell->StyleSet()->BeginReconstruct();
|
|
if (NS_FAILED(rv)) {
|
|
batch.EndUpdateViewBatch(NS_VMREFRESH_NO_SYNC);
|
|
return;
|
|
}
|
|
|
|
nsPresContext *presContext = mPresShell->GetPresContext();
|
|
presContext->SetProcessingRestyles(PR_TRUE);
|
|
// Recalculate all of the style contexts for the document
|
|
// Note that we can ignore the return value of ComputeStyleChangeFor
|
|
// because we never need to reframe the root frame
|
|
// XXX This could be made faster by not rerunning rule matching
|
|
// (but note that nsPresShell::SetPreferenceStyleRules currently depends
|
|
// on us re-running rule matching here
|
|
nsStyleChangeList changeList;
|
|
// XXX Does it matter that we're passing aExtraHint to the real root
|
|
// frame and not the root node's primary frame?
|
|
// Note: The restyle tracker we pass in here doesn't matter.
|
|
mPresShell->FrameManager()->ComputeStyleChangeFor(mPresShell->GetRootFrame(),
|
|
&changeList, aExtraHint,
|
|
mPendingRestyles, PR_TRUE);
|
|
// Process the required changes
|
|
ProcessRestyledFrames(changeList);
|
|
presContext->SetProcessingRestyles(PR_FALSE);
|
|
|
|
// Make sure that we process any pending animation restyles from the
|
|
// above style change. Note that we can *almost* implement the above
|
|
// by just posting a style change -- except we really need to restyle
|
|
// the root frame rather than the root element's primary frame.
|
|
ProcessPendingRestyles();
|
|
|
|
// Tell the style set it's safe to destroy the old rule tree. We
|
|
// must do this after the ProcessRestyledFrames call in case the
|
|
// change list has frame reconstructs in it (since frames to be
|
|
// reconstructed will still have their old style context pointers
|
|
// until they are destroyed).
|
|
mPresShell->StyleSet()->EndReconstruct();
|
|
batch.EndUpdateViewBatch(NS_VMREFRESH_NO_SYNC);
|
|
}
|
|
|
|
void
|
|
nsCSSFrameConstructor::ProcessPendingRestyles()
|
|
{
|
|
NS_PRECONDITION(mDocument, "No document? Pshaw!");
|
|
NS_PRECONDITION(!nsContentUtils::IsSafeToRunScript(),
|
|
"Missing a script blocker!");
|
|
|
|
// Process non-animation restyles...
|
|
nsPresContext *presContext = mPresShell->GetPresContext();
|
|
NS_ABORT_IF_FALSE(!presContext->IsProcessingRestyles(),
|
|
"Nesting calls to ProcessPendingRestyles?");
|
|
presContext->SetProcessingRestyles(PR_TRUE);
|
|
|
|
mPendingRestyles.ProcessRestyles();
|
|
|
|
#ifdef DEBUG
|
|
PRUint32 oldPendingRestyleCount = mPendingRestyles.Count();
|
|
#endif
|
|
|
|
// ...and then process animation restyles. This needs to happen
|
|
// second because we need to start animations that resulted from the
|
|
// first set of restyles (e.g., CSS transitions with negative
|
|
// transition-delay), and because we need to immediately
|
|
// restyle-with-animation any just-restyled elements that are
|
|
// mid-transition (since processing the non-animation restyle ignores
|
|
// the running transition so it can check for a new change on the same
|
|
// property, and then posts an immediate animation style change).
|
|
presContext->SetProcessingAnimationStyleChange(PR_TRUE);
|
|
mPendingAnimationRestyles.ProcessRestyles();
|
|
presContext->SetProcessingAnimationStyleChange(PR_FALSE);
|
|
|
|
presContext->SetProcessingRestyles(PR_FALSE);
|
|
NS_POSTCONDITION(mPendingRestyles.Count() == oldPendingRestyleCount,
|
|
"We should not have posted new non-animation restyles while "
|
|
"processing animation restyles");
|
|
|
|
if (mRebuildAllStyleData) {
|
|
// We probably wasted a lot of work up above, but this seems safest
|
|
// and it should be rarely used.
|
|
// This might add us as a refresh observer again; that's ok.
|
|
RebuildAllStyleData(nsChangeHint(0));
|
|
}
|
|
}
|
|
|
|
void
|
|
nsCSSFrameConstructor::PostRestyleEventCommon(Element* aElement,
|
|
nsRestyleHint aRestyleHint,
|
|
nsChangeHint aMinChangeHint,
|
|
PRBool aForAnimation)
|
|
{
|
|
if (NS_UNLIKELY(mPresShell->IsDestroying())) {
|
|
return;
|
|
}
|
|
|
|
if (aRestyleHint == 0 && !aMinChangeHint) {
|
|
// Nothing to do here
|
|
return;
|
|
}
|
|
|
|
RestyleTracker& tracker =
|
|
aForAnimation ? mPendingAnimationRestyles : mPendingRestyles;
|
|
tracker.AddPendingRestyle(aElement, aRestyleHint, aMinChangeHint);
|
|
|
|
PostRestyleEventInternal(PR_FALSE);
|
|
}
|
|
|
|
void
|
|
nsCSSFrameConstructor::PostRestyleEventInternal(PRBool aForLazyConstruction)
|
|
{
|
|
// Make sure we're not in a style refresh; if we are, we still have
|
|
// a call to ProcessPendingRestyles coming and there's no need to
|
|
// add ourselves as a refresh observer until then.
|
|
PRBool inRefresh = !aForLazyConstruction && mInStyleRefresh;
|
|
if (!mObservingRefreshDriver && !inRefresh) {
|
|
mObservingRefreshDriver = mPresShell->GetPresContext()->RefreshDriver()->
|
|
AddStyleFlushObserver(mPresShell);
|
|
}
|
|
}
|
|
|
|
void
|
|
nsCSSFrameConstructor::PostRebuildAllStyleDataEvent(nsChangeHint aExtraHint)
|
|
{
|
|
NS_ASSERTION(!(aExtraHint & nsChangeHint_ReconstructFrame),
|
|
"Should not reconstruct the root of the frame tree. "
|
|
"Use ReconstructDocElementHierarchy instead.");
|
|
|
|
mRebuildAllStyleData = PR_TRUE;
|
|
NS_UpdateHint(mRebuildAllExtraHint, aExtraHint);
|
|
// Get a restyle event posted if necessary
|
|
PostRestyleEventInternal(PR_FALSE);
|
|
}
|
|
|
|
nsresult
|
|
nsCSSFrameConstructor::GenerateChildFrames(nsIFrame* aFrame)
|
|
{
|
|
{
|
|
nsAutoScriptBlocker scriptBlocker;
|
|
BeginUpdate();
|
|
|
|
nsFrameItems childItems;
|
|
nsFrameConstructorState state(mPresShell, nsnull, nsnull, nsnull);
|
|
// We don't have a parent frame with a pending binding constructor here,
|
|
// so no need to worry about ordering of the kids' constructors with it.
|
|
// Pass null for the PendingBinding.
|
|
nsresult rv = ProcessChildren(state, aFrame->GetContent(), aFrame->GetStyleContext(),
|
|
aFrame, PR_FALSE, childItems, PR_FALSE,
|
|
nsnull);
|
|
if (NS_FAILED(rv)) {
|
|
EndUpdate();
|
|
return rv;
|
|
}
|
|
|
|
aFrame->SetInitialChildList(nsnull, childItems);
|
|
|
|
EndUpdate();
|
|
}
|
|
|
|
#ifdef ACCESSIBILITY
|
|
nsAccessibilityService* accService = nsIPresShell::AccService();
|
|
if (accService) {
|
|
nsIContent* container = aFrame->GetContent();
|
|
nsIContent* child = container->GetFirstChild();
|
|
if (child) {
|
|
accService->ContentRangeInserted(mPresShell, container, child, nsnull);
|
|
}
|
|
}
|
|
#endif
|
|
|
|
// call XBL constructors after the frames are created
|
|
mPresShell->GetDocument()->BindingManager()->ProcessAttachedQueue();
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
//////////////////////////////////////////////////////////
|
|
// nsCSSFrameConstructor::FrameConstructionItem methods //
|
|
//////////////////////////////////////////////////////////
|
|
PRBool
|
|
nsCSSFrameConstructor::
|
|
FrameConstructionItem::IsWhitespace(nsFrameConstructorState& aState) const
|
|
{
|
|
NS_PRECONDITION(aState.mCreatingExtraFrames ||
|
|
!mContent->GetPrimaryFrame(), "How did that happen?");
|
|
if (!mIsText) {
|
|
return PR_FALSE;
|
|
}
|
|
mContent->SetFlags(NS_CREATE_FRAME_IF_NON_WHITESPACE |
|
|
NS_REFRAME_IF_WHITESPACE);
|
|
return mContent->TextIsOnlyWhitespace();
|
|
}
|
|
|
|
//////////////////////////////////////////////////////////////
|
|
// nsCSSFrameConstructor::FrameConstructionItemList methods //
|
|
//////////////////////////////////////////////////////////////
|
|
void
|
|
nsCSSFrameConstructor::FrameConstructionItemList::
|
|
AdjustCountsForItem(FrameConstructionItem* aItem, PRInt32 aDelta)
|
|
{
|
|
NS_PRECONDITION(aDelta == 1 || aDelta == -1, "Unexpected delta");
|
|
mItemCount += aDelta;
|
|
if (aItem->mIsAllInline) {
|
|
mInlineCount += aDelta;
|
|
}
|
|
if (aItem->mIsBlock) {
|
|
mBlockCount += aDelta;
|
|
}
|
|
if (aItem->mIsLineParticipant) {
|
|
mLineParticipantCount += aDelta;
|
|
}
|
|
mDesiredParentCounts[aItem->DesiredParentType()] += aDelta;
|
|
}
|
|
|
|
////////////////////////////////////////////////////////////////////////
|
|
// nsCSSFrameConstructor::FrameConstructionItemList::Iterator methods //
|
|
////////////////////////////////////////////////////////////////////////
|
|
inline PRBool
|
|
nsCSSFrameConstructor::FrameConstructionItemList::
|
|
Iterator::SkipItemsWantingParentType(ParentType aParentType)
|
|
{
|
|
NS_PRECONDITION(!IsDone(), "Shouldn't be done yet");
|
|
while (item().DesiredParentType() == aParentType) {
|
|
Next();
|
|
if (IsDone()) {
|
|
return PR_TRUE;
|
|
}
|
|
}
|
|
return PR_FALSE;
|
|
}
|
|
|
|
inline PRBool
|
|
nsCSSFrameConstructor::FrameConstructionItemList::
|
|
Iterator::SkipWhitespace(nsFrameConstructorState& aState)
|
|
{
|
|
NS_PRECONDITION(!IsDone(), "Shouldn't be done yet");
|
|
NS_PRECONDITION(item().IsWhitespace(aState), "Not pointing to whitespace?");
|
|
do {
|
|
Next();
|
|
if (IsDone()) {
|
|
return PR_TRUE;
|
|
}
|
|
} while (item().IsWhitespace(aState));
|
|
|
|
return PR_FALSE;
|
|
}
|
|
|
|
void
|
|
nsCSSFrameConstructor::FrameConstructionItemList::
|
|
Iterator::AppendItemToList(FrameConstructionItemList& aTargetList)
|
|
{
|
|
NS_ASSERTION(&aTargetList != &mList, "Unexpected call");
|
|
NS_PRECONDITION(!IsDone(), "should not be done");
|
|
|
|
FrameConstructionItem* item = ToItem(mCurrent);
|
|
Next();
|
|
PR_REMOVE_LINK(item);
|
|
PR_APPEND_LINK(item, &aTargetList.mItems);
|
|
|
|
mList.AdjustCountsForItem(item, -1);
|
|
aTargetList.AdjustCountsForItem(item, 1);
|
|
}
|
|
|
|
void
|
|
nsCSSFrameConstructor::FrameConstructionItemList::
|
|
Iterator::AppendItemsToList(const Iterator& aEnd,
|
|
FrameConstructionItemList& aTargetList)
|
|
{
|
|
NS_ASSERTION(&aTargetList != &mList, "Unexpected call");
|
|
NS_PRECONDITION(mEnd == aEnd.mEnd, "end iterator for some other list?");
|
|
|
|
if (!AtStart() || !aEnd.IsDone() || !aTargetList.IsEmpty()) {
|
|
do {
|
|
AppendItemToList(aTargetList);
|
|
} while (*this != aEnd);
|
|
return;
|
|
}
|
|
|
|
// move over the list of items
|
|
PR_INSERT_AFTER(&aTargetList.mItems, &mList.mItems);
|
|
PR_REMOVE_LINK(&mList.mItems);
|
|
|
|
// Copy over the various counters
|
|
aTargetList.mInlineCount = mList.mInlineCount;
|
|
aTargetList.mBlockCount = mList.mBlockCount;
|
|
aTargetList.mLineParticipantCount = mList.mLineParticipantCount;
|
|
aTargetList.mItemCount = mList.mItemCount;
|
|
memcpy(aTargetList.mDesiredParentCounts, mList.mDesiredParentCounts,
|
|
sizeof(aTargetList.mDesiredParentCounts));
|
|
|
|
// reset mList
|
|
new (&mList) FrameConstructionItemList();
|
|
|
|
// Point ourselves to aEnd, as advertised
|
|
mCurrent = mEnd = &mList.mItems;
|
|
NS_POSTCONDITION(*this == aEnd, "How did that happen?");
|
|
}
|
|
|
|
void
|
|
nsCSSFrameConstructor::FrameConstructionItemList::
|
|
Iterator::InsertItem(FrameConstructionItem* aItem)
|
|
{
|
|
// Just insert the item before us. There's no magic here.
|
|
PR_INSERT_BEFORE(aItem, mCurrent);
|
|
mList.AdjustCountsForItem(aItem, 1);
|
|
|
|
NS_POSTCONDITION(PR_NEXT_LINK(aItem) == mCurrent, "How did that happen?");
|
|
}
|
|
|
|
void
|
|
nsCSSFrameConstructor::FrameConstructionItemList::
|
|
Iterator::DeleteItemsTo(const Iterator& aEnd)
|
|
{
|
|
NS_PRECONDITION(mEnd == aEnd.mEnd, "end iterator for some other list?");
|
|
NS_PRECONDITION(*this != aEnd, "Shouldn't be at aEnd yet");
|
|
|
|
do {
|
|
NS_ASSERTION(!IsDone(), "Ran off end of list?");
|
|
FrameConstructionItem* item = ToItem(mCurrent);
|
|
Next();
|
|
PR_REMOVE_LINK(item);
|
|
mList.AdjustCountsForItem(item, -1);
|
|
delete item;
|
|
} while (*this != aEnd);
|
|
}
|