зеркало из https://github.com/mozilla/pjs.git
1568 строки
54 KiB
C++
1568 строки
54 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 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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* Pierre Phaneuf <pp@ludusdesign.com>
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* Elika J. Etemad ("fantasai") <fantasai@inkedblade.net>
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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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/* base class #1 for rendering objects that have child lists */
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#include "nsContainerFrame.h"
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#include "nsHTMLContainerFrame.h"
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#include "nsIContent.h"
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#include "nsIDocument.h"
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#include "nsPresContext.h"
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#include "nsIRenderingContext.h"
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#include "nsStyleContext.h"
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#include "nsRect.h"
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#include "nsPoint.h"
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#include "nsGUIEvent.h"
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#include "nsStyleConsts.h"
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#include "nsIView.h"
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#include "nsHTMLContainerFrame.h"
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#include "nsFrameManager.h"
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#include "nsIPresShell.h"
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#include "nsCOMPtr.h"
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#include "nsGkAtoms.h"
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#include "nsCSSAnonBoxes.h"
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#include "nsIViewManager.h"
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#include "nsIWidget.h"
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#include "nsGfxCIID.h"
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#include "nsIServiceManager.h"
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#include "nsCSSRendering.h"
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#include "nsTransform2D.h"
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#include "nsRegion.h"
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#include "nsLayoutErrors.h"
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#include "nsDisplayList.h"
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#include "nsContentErrors.h"
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#include "nsIEventStateManager.h"
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#include "nsListControlFrame.h"
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#include "nsIBaseWindow.h"
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#ifdef NS_DEBUG
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#undef NOISY
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#else
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#undef NOISY
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#endif
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nsContainerFrame::~nsContainerFrame()
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{
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}
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NS_IMETHODIMP
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nsContainerFrame::Init(nsIContent* aContent,
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nsIFrame* aParent,
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nsIFrame* aPrevInFlow)
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{
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nsresult rv = nsSplittableFrame::Init(aContent, aParent, aPrevInFlow);
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if (aPrevInFlow) {
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// Make sure we copy bits from our prev-in-flow that will affect
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// us. A continuation for a container frame needs to know if it
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// has a child with a view so that we'll properly reposition it.
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if (aPrevInFlow->GetStateBits() & NS_FRAME_HAS_CHILD_WITH_VIEW)
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AddStateBits(NS_FRAME_HAS_CHILD_WITH_VIEW);
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}
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return rv;
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}
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NS_IMETHODIMP
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nsContainerFrame::SetInitialChildList(nsIAtom* aListName,
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nsIFrame* aChildList)
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{
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nsresult result;
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if (!mFrames.IsEmpty()) {
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// We already have child frames which means we've already been
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// initialized
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NS_NOTREACHED("unexpected second call to SetInitialChildList");
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result = NS_ERROR_UNEXPECTED;
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} else if (aListName) {
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// All we know about is the unnamed principal child list
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NS_NOTREACHED("unknown frame list");
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result = NS_ERROR_INVALID_ARG;
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} else {
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#ifdef NS_DEBUG
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nsFrame::VerifyDirtyBitSet(aChildList);
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#endif
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mFrames.SetFrames(aChildList);
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result = NS_OK;
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}
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return result;
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}
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NS_IMETHODIMP
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nsContainerFrame::AppendFrames(nsIAtom* aListName,
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nsIFrame* aFrameList)
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{
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if (nsnull != aListName) {
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#ifdef IBMBIDI
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if (aListName != nsGkAtoms::nextBidi)
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#endif
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{
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NS_ERROR("unexpected child list");
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return NS_ERROR_INVALID_ARG;
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}
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}
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if (aFrameList) {
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mFrames.AppendFrames(this, aFrameList);
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// Ask the parent frame to reflow me.
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#ifdef IBMBIDI
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if (nsnull == aListName)
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#endif
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{
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PresContext()->PresShell()->
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FrameNeedsReflow(this, nsIPresShell::eTreeChange, NS_FRAME_IS_DIRTY);
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}
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}
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return NS_OK;
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}
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NS_IMETHODIMP
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nsContainerFrame::InsertFrames(nsIAtom* aListName,
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nsIFrame* aPrevFrame,
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nsIFrame* aFrameList)
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{
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NS_ASSERTION(!aPrevFrame || aPrevFrame->GetParent() == this,
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"inserting after sibling frame with different parent");
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if (nsnull != aListName) {
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#ifdef IBMBIDI
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if (aListName != nsGkAtoms::nextBidi)
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#endif
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{
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NS_ERROR("unexpected child list");
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return NS_ERROR_INVALID_ARG;
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}
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}
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if (aFrameList) {
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// Insert frames after aPrevFrame
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mFrames.InsertFrames(this, aPrevFrame, aFrameList);
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#ifdef IBMBIDI
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if (nsnull == aListName)
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#endif
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{
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PresContext()->PresShell()->
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FrameNeedsReflow(this, nsIPresShell::eTreeChange, NS_FRAME_IS_DIRTY);
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}
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}
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return NS_OK;
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}
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NS_IMETHODIMP
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nsContainerFrame::RemoveFrame(nsIAtom* aListName,
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nsIFrame* aOldFrame)
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{
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if (nsnull != aListName) {
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#ifdef IBMBIDI
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if (nsGkAtoms::nextBidi != aListName)
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#endif
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{
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NS_ERROR("unexpected child list");
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return NS_ERROR_INVALID_ARG;
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}
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}
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if (aOldFrame) {
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// Loop and destroy the frame and all of its continuations.
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// If the frame we are removing is a brFrame, we need a reflow so
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// the line the brFrame was on can attempt to pull up any frames
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// that can fit from lines below it.
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PRBool generateReflowCommand = PR_TRUE;
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#ifdef IBMBIDI
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if (nsGkAtoms::nextBidi == aListName) {
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generateReflowCommand = PR_FALSE;
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}
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#endif
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nsContainerFrame* parent = static_cast<nsContainerFrame*>(aOldFrame->GetParent());
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while (aOldFrame) {
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// When the parent is an inline frame we have a simple task - just
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// remove the frame from its parents list and generate a reflow
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// command.
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nsIFrame* oldFrameNextContinuation = aOldFrame->GetNextContinuation();
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//XXXfr probably should use StealFrame here. I'm not sure if we need to
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// check the overflow lists atm, but we'll need a prescontext lookup
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// for overflow containers once we can split abspos elements with
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// inline containing blocks.
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if (parent == this) {
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if (!parent->mFrames.DestroyFrame(aOldFrame)) {
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// Try to remove it from our overflow list, if we have one.
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// The simplest way is to reuse StealFrame.
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nsresult rv = StealFrame(PresContext(), aOldFrame, PR_TRUE);
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NS_ASSERTION(NS_SUCCEEDED(rv), "Could not find frame to remove!");
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aOldFrame->Destroy();
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}
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} else {
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// This recursive call takes care of all continuations after aOldFrame,
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// so we don't need to loop anymore.
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parent->RemoveFrame(nsnull, aOldFrame);
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break;
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}
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aOldFrame = oldFrameNextContinuation;
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if (aOldFrame) {
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parent = static_cast<nsContainerFrame*>(aOldFrame->GetParent());
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}
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}
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if (generateReflowCommand) {
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PresContext()->PresShell()->
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FrameNeedsReflow(this, nsIPresShell::eTreeChange, NS_FRAME_IS_DIRTY);
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}
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}
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return NS_OK;
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}
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void
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nsContainerFrame::Destroy()
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{
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// Prevent event dispatch during destruction
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if (HasView()) {
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GetView()->SetClientData(nsnull);
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}
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// Delete the primary child list
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mFrames.DestroyFrames();
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// Destroy auxiliary frame lists
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nsPresContext* prescontext = PresContext();
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nsFrameList overflowFrames(GetOverflowFrames(prescontext, PR_TRUE));
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overflowFrames.DestroyFrames();
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if (IsFrameOfType(nsIFrame::eCanContainOverflowContainers)) {
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nsFrameList* frameList = RemovePropTableFrames(prescontext,
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nsGkAtoms::overflowContainersProperty);
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if (frameList)
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frameList->Destroy();
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frameList = RemovePropTableFrames(prescontext,
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nsGkAtoms::excessOverflowContainersProperty);
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if (frameList)
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frameList->Destroy();
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}
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if (IsGeneratedContentFrame()) {
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// Make sure all the content nodes for the generated content inside
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// this frame know it's going away.
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// See also nsCSSFrameConstructor::CreateGeneratedContentFrame which
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// created this frame.
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nsCOMArray<nsIContent>* generatedContent =
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static_cast<nsCOMArray<nsIContent>*>(
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UnsetProperty(nsGkAtoms::generatedContent));
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if (generatedContent) {
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for (int i = generatedContent->Count() - 1; i >= 0; --i) {
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nsIContent* content = generatedContent->ObjectAt(i);
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// Tell the ESM that this content is going away now, so it'll update
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// its hover content, etc.
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PresContext()->EventStateManager()->ContentRemoved(content);
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content->UnbindFromTree();
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}
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delete generatedContent;
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}
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}
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// Destroy the frame and remove the flow pointers
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nsSplittableFrame::Destroy();
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}
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/////////////////////////////////////////////////////////////////////////////
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// Child frame enumeration
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nsIFrame*
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nsContainerFrame::GetFirstChild(nsIAtom* aListName) const
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{
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// We only know about the unnamed principal child list and the overflow
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// list
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if (nsnull == aListName) {
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return mFrames.FirstChild();
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} else if (nsGkAtoms::overflowList == aListName) {
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return GetOverflowFrames(PresContext(), PR_FALSE);
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} else if (nsGkAtoms::overflowContainersList == aListName) {
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nsFrameList* list = GetPropTableFrames(PresContext(),
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nsGkAtoms::overflowContainersProperty);
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return (list) ? list->FirstChild() : nsnull;
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} else if (nsGkAtoms::excessOverflowContainersList == aListName) {
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nsFrameList* list = GetPropTableFrames(PresContext(),
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nsGkAtoms::excessOverflowContainersProperty);
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return (list) ? list->FirstChild() : nsnull;
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} else {
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return nsnull;
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}
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}
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#define NS_CONTAINER_FRAME_OVERFLOW_LIST_INDEX 0
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#define NS_CONTAINER_FRAME_OVERFLOW_CONTAINERS_LIST_INDEX 1
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#define NS_CONTAINER_FRAME_EXCESS_OVERFLOW_CONTAINERS_LIST_INDEX 2
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// If adding/removing lists, don't forget to update count in .h file
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nsIAtom*
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nsContainerFrame::GetAdditionalChildListName(PRInt32 aIndex) const
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{
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if (NS_CONTAINER_FRAME_OVERFLOW_LIST_INDEX == aIndex)
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return nsGkAtoms::overflowList;
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else if (IsFrameOfType(nsIFrame::eCanContainOverflowContainers)) {
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if (NS_CONTAINER_FRAME_OVERFLOW_CONTAINERS_LIST_INDEX == aIndex)
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return nsGkAtoms::overflowContainersList;
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else if (NS_CONTAINER_FRAME_EXCESS_OVERFLOW_CONTAINERS_LIST_INDEX == aIndex)
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return nsGkAtoms::excessOverflowContainersList;
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}
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return nsnull;
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}
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/////////////////////////////////////////////////////////////////////////////
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// Painting/Events
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NS_IMETHODIMP
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nsContainerFrame::BuildDisplayList(nsDisplayListBuilder* aBuilder,
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const nsRect& aDirtyRect,
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const nsDisplayListSet& aLists)
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{
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nsresult rv = DisplayBorderBackgroundOutline(aBuilder, aLists);
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NS_ENSURE_SUCCESS(rv, rv);
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return BuildDisplayListForNonBlockChildren(aBuilder, aDirtyRect, aLists);
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}
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nsresult
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nsContainerFrame::BuildDisplayListForNonBlockChildren(nsDisplayListBuilder* aBuilder,
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const nsRect& aDirtyRect,
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const nsDisplayListSet& aLists,
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PRUint32 aFlags)
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{
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nsIFrame* kid = mFrames.FirstChild();
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// Put each child's background directly onto the content list
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nsDisplayListSet set(aLists, aLists.Content());
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// The children should be in content order
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while (kid) {
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nsresult rv = BuildDisplayListForChild(aBuilder, kid, aDirtyRect, set, aFlags);
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NS_ENSURE_SUCCESS(rv, rv);
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kid = kid->GetNextSibling();
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}
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return NS_OK;
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}
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/* virtual */ void
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nsContainerFrame::ChildIsDirty(nsIFrame* aChild)
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{
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AddStateBits(NS_FRAME_HAS_DIRTY_CHILDREN);
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}
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PRBool
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nsContainerFrame::IsLeaf() const
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{
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return PR_FALSE;
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}
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PRBool
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nsContainerFrame::PeekOffsetNoAmount(PRBool aForward, PRInt32* aOffset)
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{
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NS_ASSERTION (aOffset && *aOffset <= 1, "aOffset out of range");
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// Don't allow the caret to stay in an empty (leaf) container frame.
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return PR_FALSE;
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}
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PRBool
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nsContainerFrame::PeekOffsetCharacter(PRBool aForward, PRInt32* aOffset)
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{
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NS_ASSERTION (aOffset && *aOffset <= 1, "aOffset out of range");
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// Don't allow the caret to stay in an empty (leaf) container frame.
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return PR_FALSE;
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}
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/////////////////////////////////////////////////////////////////////////////
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// Helper member functions
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/**
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* Position the view associated with |aKidFrame|, if there is one. A
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* container frame should call this method after positioning a frame,
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* but before |Reflow|.
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*/
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void
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nsContainerFrame::PositionFrameView(nsIFrame* aKidFrame)
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{
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nsIFrame* parentFrame = aKidFrame->GetParent();
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if (!aKidFrame->HasView() || !parentFrame)
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return;
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nsIView* view = aKidFrame->GetView();
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nsIViewManager* vm = view->GetViewManager();
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nsPoint pt;
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nsIView* ancestorView = parentFrame->GetClosestView(&pt);
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if (ancestorView != view->GetParent()) {
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NS_ASSERTION(ancestorView == view->GetParent()->GetParent(),
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"Allowed only one anonymous view between frames");
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// parentFrame is responsible for positioning aKidFrame's view
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// explicitly
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return;
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}
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pt += aKidFrame->GetPosition();
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vm->MoveViewTo(view, pt.x, pt.y);
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}
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static PRBool
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IsMenuPopup(nsIFrame *aFrame)
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{
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nsIAtom *frameType = aFrame->GetType();
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// We're a menupopup if we're the list control frame dropdown for a combobox.
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if (frameType == nsGkAtoms::listControlFrame) {
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nsListControlFrame *listControlFrame = static_cast<nsListControlFrame*>(aFrame);
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if (listControlFrame) {
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return listControlFrame->IsInDropDownMode();
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}
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}
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// ... or if we're a XUL menupopup frame.
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return (frameType == nsGkAtoms::menuPopupFrame);
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}
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static PRBool
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IsTopLevelWidget(nsPresContext* aPresContext)
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{
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nsCOMPtr<nsISupports> container = aPresContext->Document()->GetContainer();
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nsCOMPtr<nsIBaseWindow> baseWindow = do_QueryInterface(container);
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if (!baseWindow)
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return PR_FALSE;
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nsCOMPtr<nsIWidget> mainWidget;
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baseWindow->GetMainWidget(getter_AddRefs(mainWidget));
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if (!mainWidget)
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return PR_FALSE;
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nsWindowType windowType;
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mainWidget->GetWindowType(windowType);
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return windowType == eWindowType_toplevel ||
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windowType == eWindowType_dialog;
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// popups aren't toplevel so they're not handled here
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}
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static void
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SyncFrameViewGeometryDependentProperties(nsPresContext* aPresContext,
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nsIFrame* aFrame,
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nsStyleContext* aStyleContext,
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nsIView* aView,
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PRUint32 aFlags)
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{
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nsIViewManager* vm = aView->GetViewManager();
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PRBool isCanvas;
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const nsStyleBackground* bg;
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PRBool hasBG =
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nsCSSRendering::FindBackground(aPresContext, aFrame, &bg, &isCanvas);
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if (isCanvas) {
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nsIView* rootView;
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vm->GetRootView(rootView);
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if (aView->HasWidget() && aView == rootView &&
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IsTopLevelWidget(aPresContext)) {
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aView->GetWidget()->SetHasTransparentBackground(nsLayoutUtils::FrameHasTransparency(aFrame));
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}
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}
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}
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void
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nsContainerFrame::SyncFrameViewAfterReflow(nsPresContext* aPresContext,
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nsIFrame* aFrame,
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nsIView* aView,
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const nsRect* aCombinedArea,
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PRUint32 aFlags)
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{
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if (!aView) {
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return;
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}
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NS_ASSERTION(aCombinedArea, "Combined area must be passed in now");
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|
|
// Make sure the view is sized and positioned correctly
|
|
if (0 == (aFlags & NS_FRAME_NO_MOVE_VIEW)) {
|
|
PositionFrameView(aFrame);
|
|
}
|
|
|
|
if (0 == (aFlags & NS_FRAME_NO_SIZE_VIEW)) {
|
|
nsIViewManager* vm = aView->GetViewManager();
|
|
|
|
vm->ResizeView(aView, *aCombinedArea, PR_TRUE);
|
|
|
|
// Even if the size hasn't changed, we need to sync up the
|
|
// geometry dependent properties, because (kidState &
|
|
// NS_FRAME_OUTSIDE_CHILDREN) might have changed, and we can't
|
|
// detect whether it has or not. Likewise, whether the view size
|
|
// has changed or not, we may need to change the transparency
|
|
// state even if there is no clip.
|
|
nsStyleContext* savedStyleContext = aFrame->GetStyleContext();
|
|
SyncFrameViewGeometryDependentProperties(aPresContext, aFrame, savedStyleContext, aView, aFlags);
|
|
}
|
|
}
|
|
|
|
void
|
|
nsContainerFrame::SyncFrameViewProperties(nsPresContext* aPresContext,
|
|
nsIFrame* aFrame,
|
|
nsStyleContext* aStyleContext,
|
|
nsIView* aView,
|
|
PRUint32 aFlags)
|
|
{
|
|
NS_ASSERTION(!aStyleContext || aFrame->GetStyleContext() == aStyleContext,
|
|
"Wrong style context for frame?");
|
|
|
|
if (!aView) {
|
|
return;
|
|
}
|
|
|
|
nsIViewManager* vm = aView->GetViewManager();
|
|
|
|
if (nsnull == aStyleContext) {
|
|
aStyleContext = aFrame->GetStyleContext();
|
|
}
|
|
|
|
// Make sure visibility is correct
|
|
if (0 == (aFlags & NS_FRAME_NO_VISIBILITY)) {
|
|
// See if the view should be hidden or visible
|
|
PRBool viewIsVisible = PR_TRUE;
|
|
|
|
if (!aStyleContext->GetStyleVisibility()->IsVisible() &&
|
|
!aFrame->SupportsVisibilityHidden()) {
|
|
// If it's a scrollable frame that can't hide its scrollbars,
|
|
// hide the view. This means that child elements can't override
|
|
// their parent's visibility, but it's not practical to leave it
|
|
// visible in all cases because the scrollbars will be showing
|
|
// XXXldb Does the view system really enforce this correctly?
|
|
viewIsVisible = PR_FALSE;
|
|
} else if (IsMenuPopup(aFrame)) {
|
|
// if the view is for a popup, don't show the view if the popup is closed
|
|
nsIWidget* widget = aView->GetWidget();
|
|
if (widget) {
|
|
nsWindowType windowType;
|
|
widget->GetWindowType(windowType);
|
|
if (windowType == eWindowType_popup) {
|
|
widget->IsVisible(viewIsVisible);
|
|
}
|
|
}
|
|
else {
|
|
// widgets for popups can be created later when the popup is opened,
|
|
// so if there is no widget, the popup won't be open.
|
|
viewIsVisible = PR_FALSE;
|
|
}
|
|
}
|
|
|
|
vm->SetViewVisibility(aView, viewIsVisible ? nsViewVisibility_kShow :
|
|
nsViewVisibility_kHide);
|
|
}
|
|
|
|
// See if the frame is being relatively positioned or absolutely
|
|
// positioned
|
|
PRBool isPositioned = aStyleContext->GetStyleDisplay()->IsPositioned();
|
|
|
|
PRInt32 zIndex = 0;
|
|
PRBool autoZIndex = PR_FALSE;
|
|
|
|
if (!isPositioned) {
|
|
autoZIndex = PR_TRUE;
|
|
} else {
|
|
// Make sure z-index is correct
|
|
const nsStylePosition* position = aStyleContext->GetStylePosition();
|
|
|
|
if (position->mZIndex.GetUnit() == eStyleUnit_Integer) {
|
|
zIndex = position->mZIndex.GetIntValue();
|
|
} else if (position->mZIndex.GetUnit() == eStyleUnit_Auto) {
|
|
autoZIndex = PR_TRUE;
|
|
}
|
|
}
|
|
|
|
vm->SetViewZIndex(aView, autoZIndex, zIndex, isPositioned);
|
|
|
|
SyncFrameViewGeometryDependentProperties(aPresContext, aFrame, aStyleContext, aView, aFlags);
|
|
}
|
|
|
|
PRBool
|
|
nsContainerFrame::FrameNeedsView(nsIFrame* aFrame)
|
|
{
|
|
// XXX Check needed because frame construction can't properly figure out when
|
|
// a frame is the child of a scrollframe
|
|
if (aFrame->GetStyleContext()->GetPseudoType() ==
|
|
nsCSSAnonBoxes::scrolledContent) {
|
|
return PR_TRUE;
|
|
}
|
|
return aFrame->NeedsView();
|
|
}
|
|
|
|
static nscoord GetCoord(const nsStyleCoord& aCoord, nscoord aIfNotCoord)
|
|
{
|
|
return aCoord.GetUnit() == eStyleUnit_Coord
|
|
? aCoord.GetCoordValue()
|
|
: aIfNotCoord;
|
|
}
|
|
|
|
void
|
|
nsContainerFrame::DoInlineIntrinsicWidth(nsIRenderingContext *aRenderingContext,
|
|
InlineIntrinsicWidthData *aData,
|
|
nsLayoutUtils::IntrinsicWidthType aType)
|
|
{
|
|
if (GetPrevInFlow())
|
|
return; // Already added.
|
|
|
|
NS_PRECONDITION(aType == nsLayoutUtils::MIN_WIDTH ||
|
|
aType == nsLayoutUtils::PREF_WIDTH, "bad type");
|
|
|
|
PRUint8 startSide, endSide;
|
|
if (GetStyleVisibility()->mDirection == NS_STYLE_DIRECTION_LTR) {
|
|
startSide = NS_SIDE_LEFT;
|
|
endSide = NS_SIDE_RIGHT;
|
|
} else {
|
|
startSide = NS_SIDE_RIGHT;
|
|
endSide = NS_SIDE_LEFT;
|
|
}
|
|
|
|
const nsStylePadding *stylePadding = GetStylePadding();
|
|
const nsStyleBorder *styleBorder = GetStyleBorder();
|
|
const nsStyleMargin *styleMargin = GetStyleMargin();
|
|
nsStyleCoord tmp;
|
|
|
|
// This goes at the beginning no matter how things are broken and how
|
|
// messy the bidi situations are, since per CSS2.1 section 8.6
|
|
// (implemented in bug 328168), the startSide border is always on the
|
|
// first line.
|
|
aData->currentLine +=
|
|
GetCoord(stylePadding->mPadding.Get(startSide, tmp), 0) +
|
|
styleBorder->GetBorderWidth(startSide) +
|
|
GetCoord(styleMargin->mMargin.Get(startSide, tmp), 0);
|
|
|
|
const nsLineList_iterator* savedLine = aData->line;
|
|
|
|
for (nsContainerFrame *nif = this; nif;
|
|
nif = (nsContainerFrame*) nif->GetNextInFlow()) {
|
|
for (nsIFrame *kid = nif->mFrames.FirstChild(); kid;
|
|
kid = kid->GetNextSibling()) {
|
|
if (aType == nsLayoutUtils::MIN_WIDTH)
|
|
kid->AddInlineMinWidth(aRenderingContext,
|
|
static_cast<InlineMinWidthData*>(aData));
|
|
else
|
|
kid->AddInlinePrefWidth(aRenderingContext,
|
|
static_cast<InlinePrefWidthData*>(aData));
|
|
}
|
|
|
|
// After we advance to our next-in-flow, the stored line may not
|
|
// longer be the correct line. Just forget it.
|
|
aData->line = nsnull;
|
|
}
|
|
|
|
aData->line = savedLine;
|
|
|
|
// This goes at the end no matter how things are broken and how
|
|
// messy the bidi situations are, since per CSS2.1 section 8.6
|
|
// (implemented in bug 328168), the endSide border is always on the
|
|
// last line.
|
|
aData->currentLine +=
|
|
GetCoord(stylePadding->mPadding.Get(endSide, tmp), 0) +
|
|
styleBorder->GetBorderWidth(endSide) +
|
|
GetCoord(styleMargin->mMargin.Get(endSide, tmp), 0);
|
|
}
|
|
|
|
/* virtual */ nsSize
|
|
nsContainerFrame::ComputeAutoSize(nsIRenderingContext *aRenderingContext,
|
|
nsSize aCBSize, nscoord aAvailableWidth,
|
|
nsSize aMargin, nsSize aBorder,
|
|
nsSize aPadding, PRBool aShrinkWrap)
|
|
{
|
|
nsSize result(0xdeadbeef, NS_UNCONSTRAINEDSIZE);
|
|
nscoord availBased = aAvailableWidth - aMargin.width - aBorder.width -
|
|
aPadding.width;
|
|
// replaced elements always shrink-wrap
|
|
if (aShrinkWrap || IsFrameOfType(eReplaced)) {
|
|
// don't bother setting it if the result won't be used
|
|
if (GetStylePosition()->mWidth.GetUnit() == eStyleUnit_Auto) {
|
|
result.width = ShrinkWidthToFit(aRenderingContext, availBased);
|
|
}
|
|
} else {
|
|
result.width = availBased;
|
|
}
|
|
return result;
|
|
}
|
|
|
|
/**
|
|
* Invokes the WillReflow() function, positions the frame and its view (if
|
|
* requested), and then calls Reflow(). If the reflow succeeds and the child
|
|
* frame is complete, deletes any next-in-flows using DeleteNextInFlowChild()
|
|
*/
|
|
nsresult
|
|
nsContainerFrame::ReflowChild(nsIFrame* aKidFrame,
|
|
nsPresContext* aPresContext,
|
|
nsHTMLReflowMetrics& aDesiredSize,
|
|
const nsHTMLReflowState& aReflowState,
|
|
nscoord aX,
|
|
nscoord aY,
|
|
PRUint32 aFlags,
|
|
nsReflowStatus& aStatus,
|
|
nsOverflowContinuationTracker* aTracker)
|
|
{
|
|
NS_PRECONDITION(aReflowState.frame == aKidFrame, "bad reflow state");
|
|
|
|
nsresult result;
|
|
|
|
// Send the WillReflow() notification, and position the child frame
|
|
// and its view if requested
|
|
aKidFrame->WillReflow(aPresContext);
|
|
|
|
if (0 == (aFlags & NS_FRAME_NO_MOVE_FRAME)) {
|
|
aKidFrame->SetPosition(nsPoint(aX, aY));
|
|
}
|
|
|
|
if (0 == (aFlags & NS_FRAME_NO_MOVE_VIEW)) {
|
|
PositionFrameView(aKidFrame);
|
|
}
|
|
|
|
// Reflow the child frame
|
|
result = aKidFrame->Reflow(aPresContext, aDesiredSize, aReflowState,
|
|
aStatus);
|
|
|
|
// If the reflow was successful and the child frame is complete, delete any
|
|
// next-in-flows
|
|
if (NS_SUCCEEDED(result) && NS_FRAME_IS_FULLY_COMPLETE(aStatus)) {
|
|
nsIFrame* kidNextInFlow = aKidFrame->GetNextInFlow();
|
|
if (nsnull != kidNextInFlow) {
|
|
// Remove all of the childs next-in-flows. Make sure that we ask
|
|
// the right parent to do the removal (it's possible that the
|
|
// parent is not this because we are executing pullup code)
|
|
if (aTracker) aTracker->Finish(aKidFrame);
|
|
static_cast<nsContainerFrame*>(kidNextInFlow->GetParent())
|
|
->DeleteNextInFlowChild(aPresContext, kidNextInFlow);
|
|
}
|
|
}
|
|
return result;
|
|
}
|
|
|
|
|
|
/**
|
|
* Position the views of |aFrame|'s descendants. A container frame
|
|
* should call this method if it moves a frame after |Reflow|.
|
|
*/
|
|
void
|
|
nsContainerFrame::PositionChildViews(nsIFrame* aFrame)
|
|
{
|
|
if (!(aFrame->GetStateBits() & NS_FRAME_HAS_CHILD_WITH_VIEW)) {
|
|
return;
|
|
}
|
|
|
|
nsIAtom* childListName = nsnull;
|
|
PRInt32 childListIndex = 0;
|
|
|
|
do {
|
|
// Recursively walk aFrame's child frames
|
|
nsIFrame* childFrame = aFrame->GetFirstChild(childListName);
|
|
while (childFrame) {
|
|
// Position the frame's view (if it has one) otherwise recursively
|
|
// process its children
|
|
if (childFrame->HasView()) {
|
|
PositionFrameView(childFrame);
|
|
} else {
|
|
PositionChildViews(childFrame);
|
|
}
|
|
|
|
// Get the next sibling child frame
|
|
childFrame = childFrame->GetNextSibling();
|
|
}
|
|
|
|
// also process the additional child lists, but skip the popup list as the
|
|
// view for popups is managed by the parent. Currently only nsMenuFrame
|
|
// has a popupList and during layout will call nsMenuPopupFrame::AdjustView.
|
|
do {
|
|
childListName = aFrame->GetAdditionalChildListName(childListIndex++);
|
|
} while (childListName == nsGkAtoms::popupList);
|
|
} while (childListName);
|
|
}
|
|
|
|
/**
|
|
* The second half of frame reflow. Does the following:
|
|
* - sets the frame's bounds
|
|
* - sizes and positions (if requested) the frame's view. If the frame's final
|
|
* position differs from the current position and the frame itself does not
|
|
* have a view, then any child frames with views are positioned so they stay
|
|
* in sync
|
|
* - sets the view's visibility, opacity, content transparency, and clip
|
|
* - invoked the DidReflow() function
|
|
*
|
|
* Flags:
|
|
* NS_FRAME_NO_MOVE_FRAME - don't move the frame. aX and aY are ignored in this
|
|
* case. Also implies NS_FRAME_NO_MOVE_VIEW
|
|
* NS_FRAME_NO_MOVE_VIEW - don't position the frame's view. Set this if you
|
|
* don't want to automatically sync the frame and view
|
|
* NS_FRAME_NO_SIZE_VIEW - don't size the frame's view
|
|
*/
|
|
nsresult
|
|
nsContainerFrame::FinishReflowChild(nsIFrame* aKidFrame,
|
|
nsPresContext* aPresContext,
|
|
const nsHTMLReflowState* aReflowState,
|
|
const nsHTMLReflowMetrics& aDesiredSize,
|
|
nscoord aX,
|
|
nscoord aY,
|
|
PRUint32 aFlags)
|
|
{
|
|
nsPoint curOrigin = aKidFrame->GetPosition();
|
|
nsRect bounds(aX, aY, aDesiredSize.width, aDesiredSize.height);
|
|
|
|
aKidFrame->SetRect(bounds);
|
|
|
|
if (aKidFrame->HasView()) {
|
|
nsIView* view = aKidFrame->GetView();
|
|
// Make sure the frame's view is properly sized and positioned and has
|
|
// things like opacity correct
|
|
SyncFrameViewAfterReflow(aPresContext, aKidFrame, view,
|
|
&aDesiredSize.mOverflowArea,
|
|
aFlags);
|
|
}
|
|
|
|
if (!(aFlags & NS_FRAME_NO_MOVE_VIEW) &&
|
|
(curOrigin.x != aX || curOrigin.y != aY)) {
|
|
if (!aKidFrame->HasView()) {
|
|
// If the frame has moved, then we need to make sure any child views are
|
|
// correctly positioned
|
|
PositionChildViews(aKidFrame);
|
|
}
|
|
|
|
// We also need to redraw everything associated with the frame
|
|
// because if the frame's Reflow issued any invalidates, then they
|
|
// will be at the wrong offset ... note that this includes
|
|
// invalidates issued against the frame's children, so we need to
|
|
// invalidate the overflow area too.
|
|
aKidFrame->Invalidate(aDesiredSize.mOverflowArea);
|
|
}
|
|
|
|
return aKidFrame->DidReflow(aPresContext, aReflowState, NS_FRAME_REFLOW_FINISHED);
|
|
}
|
|
|
|
nsresult
|
|
nsContainerFrame::ReflowOverflowContainerChildren(nsPresContext* aPresContext,
|
|
const nsHTMLReflowState& aReflowState,
|
|
nsRect& aOverflowRect,
|
|
PRUint32 aFlags,
|
|
nsReflowStatus& aStatus)
|
|
{
|
|
NS_PRECONDITION(aPresContext, "null pointer");
|
|
nsresult rv = NS_OK;
|
|
|
|
nsFrameList* overflowContainers =
|
|
GetPropTableFrames(aPresContext,
|
|
nsGkAtoms::overflowContainersProperty);
|
|
|
|
NS_ASSERTION(!(overflowContainers && GetPrevInFlow()
|
|
&& static_cast<nsContainerFrame*>(GetPrevInFlow())
|
|
->GetPropTableFrames(aPresContext,
|
|
nsGkAtoms::excessOverflowContainersProperty)),
|
|
"conflicting overflow containers lists");
|
|
|
|
if (!overflowContainers) {
|
|
// Drain excess from previnflow
|
|
nsContainerFrame* prev = (nsContainerFrame*) GetPrevInFlow();
|
|
if (prev) {
|
|
nsFrameList* excessFrames =
|
|
prev->RemovePropTableFrames(aPresContext,
|
|
nsGkAtoms::excessOverflowContainersProperty);
|
|
if (excessFrames) {
|
|
nsFrameList reparenter;
|
|
reparenter.InsertFrames(this, nsnull, excessFrames->FirstChild());
|
|
nsHTMLContainerFrame::ReparentFrameViewList(aPresContext,
|
|
excessFrames->FirstChild(),
|
|
prev, this);
|
|
overflowContainers = excessFrames;
|
|
rv = SetPropTableFrames(aPresContext, overflowContainers,
|
|
nsGkAtoms::overflowContainersProperty);
|
|
if (NS_FAILED(rv)) {
|
|
excessFrames->DestroyFrames();
|
|
delete excessFrames;
|
|
return rv;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
if (!overflowContainers)
|
|
return NS_OK; // nothing to reflow
|
|
|
|
nsOverflowContinuationTracker tracker(aPresContext, this, PR_FALSE, PR_FALSE);
|
|
for (nsIFrame* frame = overflowContainers->FirstChild(); frame;
|
|
frame = frame->GetNextSibling()) {
|
|
if (NS_SUBTREE_DIRTY(frame)) {
|
|
// Get prev-in-flow
|
|
nsIFrame* prevInFlow = frame->GetPrevInFlow();
|
|
NS_ASSERTION(prevInFlow,
|
|
"overflow container frame must have a prev-in-flow");
|
|
NS_ASSERTION(frame->GetStateBits() & NS_FRAME_IS_OVERFLOW_CONTAINER,
|
|
"overflow container frame must have overflow container bit set");
|
|
nsRect prevRect = prevInFlow->GetRect();
|
|
|
|
// Initialize reflow params
|
|
nsSize availSpace(prevRect.width, aReflowState.availableHeight);
|
|
nsHTMLReflowMetrics desiredSize;
|
|
nsHTMLReflowState frameState(aPresContext, aReflowState,
|
|
frame, availSpace);
|
|
nsReflowStatus frameStatus = NS_FRAME_COMPLETE;
|
|
|
|
// Cache old bounds
|
|
nsRect oldRect = frame->GetRect();
|
|
nsRect oldOverflow = frame->GetOverflowRect();
|
|
|
|
// Reflow
|
|
rv = ReflowChild(frame, aPresContext, desiredSize, frameState,
|
|
prevRect.x, 0, aFlags, frameStatus, &tracker);
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
//XXXfr Do we need to override any shrinkwrap effects here?
|
|
// e.g. desiredSize.width = prevRect.width;
|
|
rv = FinishReflowChild(frame, aPresContext, &frameState, desiredSize,
|
|
prevRect.x, 0, aFlags);
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
|
|
// Invalidate if there was a position or size change
|
|
nsRect rect = frame->GetRect();
|
|
if (rect != oldRect) {
|
|
nsRect dirtyRect = oldOverflow;
|
|
dirtyRect.MoveBy(oldRect.x, oldRect.y);
|
|
Invalidate(dirtyRect);
|
|
|
|
dirtyRect = frame->GetOverflowRect();
|
|
dirtyRect.MoveBy(rect.x, rect.y);
|
|
Invalidate(dirtyRect);
|
|
}
|
|
|
|
// Handle continuations
|
|
if (!NS_FRAME_IS_FULLY_COMPLETE(frameStatus)) {
|
|
if (frame->GetStateBits() & NS_FRAME_OUT_OF_FLOW) {
|
|
// Abspos frames can't cause their parent to be incomplete,
|
|
// only overflow incomplete.
|
|
NS_FRAME_SET_OVERFLOW_INCOMPLETE(frameStatus);
|
|
}
|
|
else {
|
|
NS_ASSERTION(NS_FRAME_IS_COMPLETE(frameStatus),
|
|
"overflow container frames can't be incomplete, only overflow-incomplete");
|
|
}
|
|
|
|
// Acquire a next-in-flow, creating it if necessary
|
|
nsIFrame* nif = frame->GetNextInFlow();
|
|
if (!nif) {
|
|
rv = nsHTMLContainerFrame::CreateNextInFlow(aPresContext, this,
|
|
frame, nif);
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
NS_ASSERTION(frameStatus & NS_FRAME_REFLOW_NEXTINFLOW,
|
|
"Someone forgot a REFLOW_NEXTINFLOW flag");
|
|
frame->SetNextSibling(nif->GetNextSibling());
|
|
nif->SetNextSibling(nsnull);
|
|
}
|
|
else if (!(nif->GetStateBits() & NS_FRAME_IS_OVERFLOW_CONTAINER)) {
|
|
// used to be a normal next-in-flow; steal it from the child list
|
|
rv = static_cast<nsContainerFrame*>(nif->GetParent())
|
|
->StealFrame(aPresContext, nif);
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
}
|
|
|
|
tracker.Insert(nif, frameStatus);
|
|
}
|
|
aStatus = NS_FRAME_MERGE_INCOMPLETE(aStatus, frameStatus);
|
|
// At this point it would be nice to assert !frame->GetOverflowRect().IsEmpty(),
|
|
// but we have some unsplittable frames that, when taller than
|
|
// availableHeight will push zero-height content into a next-in-flow.
|
|
}
|
|
else {
|
|
tracker.Skip(frame, aStatus);
|
|
}
|
|
ConsiderChildOverflow(aOverflowRect, frame);
|
|
}
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
void
|
|
nsContainerFrame::DisplayOverflowContainers(nsDisplayListBuilder* aBuilder,
|
|
const nsRect& aDirtyRect,
|
|
const nsDisplayListSet& aLists)
|
|
{
|
|
nsFrameList* overflowconts = GetPropTableFrames(PresContext(),
|
|
nsGkAtoms::overflowContainersProperty);
|
|
if (overflowconts) {
|
|
for (nsIFrame* frame = overflowconts->FirstChild(); frame;
|
|
frame = frame->GetNextSibling()) {
|
|
BuildDisplayListForChild(aBuilder, frame, aDirtyRect, aLists);
|
|
}
|
|
}
|
|
}
|
|
|
|
nsresult
|
|
nsContainerFrame::StealFrame(nsPresContext* aPresContext,
|
|
nsIFrame* aChild,
|
|
PRBool aForceNormal)
|
|
{
|
|
PRBool removed = PR_TRUE;
|
|
if ((aChild->GetStateBits() & NS_FRAME_IS_OVERFLOW_CONTAINER)
|
|
&& !aForceNormal) {
|
|
// Try removing from the overflow container list
|
|
if (!RemovePropTableFrame(aPresContext, aChild,
|
|
nsGkAtoms::overflowContainersProperty)) {
|
|
// It must be in the excess overflow container list
|
|
removed = RemovePropTableFrame(aPresContext, aChild,
|
|
nsGkAtoms::excessOverflowContainersProperty);
|
|
}
|
|
}
|
|
else {
|
|
if (!mFrames.RemoveFrame(aChild)) {
|
|
// We didn't find the child in the parent's principal child list.
|
|
// Maybe it's on the overflow list?
|
|
nsFrameList frameList(GetOverflowFrames(aPresContext, PR_TRUE));
|
|
removed = frameList.RemoveFrame(aChild);
|
|
if (frameList.NotEmpty()) {
|
|
nsresult rv = SetOverflowFrames(aPresContext, frameList.FirstChild());
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
}
|
|
}
|
|
}
|
|
return (removed) ? NS_OK : NS_ERROR_UNEXPECTED;
|
|
}
|
|
|
|
/**
|
|
* Remove and delete aNextInFlow and its next-in-flows. Updates the sibling and flow
|
|
* pointers
|
|
*/
|
|
void
|
|
nsContainerFrame::DeleteNextInFlowChild(nsPresContext* aPresContext,
|
|
nsIFrame* aNextInFlow)
|
|
{
|
|
nsIFrame* prevInFlow = aNextInFlow->GetPrevInFlow();
|
|
NS_PRECONDITION(prevInFlow, "bad prev-in-flow");
|
|
|
|
// If the next-in-flow has a next-in-flow then delete it, too (and
|
|
// delete it first).
|
|
// Do this in a loop so we don't overflow the stack for frames
|
|
// with very many next-in-flows
|
|
nsIFrame* nextNextInFlow = aNextInFlow->GetNextInFlow();
|
|
if (nextNextInFlow) {
|
|
nsAutoVoidArray frames;
|
|
for (nsIFrame* f = nextNextInFlow; f; f = f->GetNextInFlow()) {
|
|
frames.AppendElement(f);
|
|
}
|
|
for (PRInt32 i = frames.Count() - 1; i >= 0; --i) {
|
|
nsIFrame* delFrame = static_cast<nsIFrame*>(frames.ElementAt(i));
|
|
static_cast<nsContainerFrame*>(delFrame->GetParent())
|
|
->DeleteNextInFlowChild(aPresContext, delFrame);
|
|
}
|
|
}
|
|
|
|
aNextInFlow->Invalidate(aNextInFlow->GetOverflowRect());
|
|
|
|
// Disconnect the next-in-flow from the flow list
|
|
nsSplittableFrame::BreakFromPrevFlow(aNextInFlow);
|
|
|
|
// Take the next-in-flow out of the parent's child list
|
|
nsresult rv = StealFrame(aPresContext, aNextInFlow);
|
|
NS_ASSERTION(NS_SUCCEEDED(rv), "StealFrame failure");
|
|
|
|
// Delete the next-in-flow frame and its descendants.
|
|
aNextInFlow->Destroy();
|
|
|
|
NS_POSTCONDITION(!prevInFlow->GetNextInFlow(), "non null next-in-flow");
|
|
}
|
|
|
|
/**
|
|
* Get the frames on the overflow list
|
|
*/
|
|
nsIFrame*
|
|
nsContainerFrame::GetOverflowFrames(nsPresContext* aPresContext,
|
|
PRBool aRemoveProperty) const
|
|
{
|
|
nsPropertyTable *propTable = aPresContext->PropertyTable();
|
|
if (aRemoveProperty) {
|
|
return (nsIFrame*) propTable->UnsetProperty(this,
|
|
nsGkAtoms::overflowProperty);
|
|
}
|
|
return (nsIFrame*) propTable->GetProperty(this,
|
|
nsGkAtoms::overflowProperty);
|
|
}
|
|
|
|
// Destructor function for the overflow frame property
|
|
static void
|
|
DestroyOverflowFrames(void* aFrame,
|
|
nsIAtom* aPropertyName,
|
|
void* aPropertyValue,
|
|
void* aDtorData)
|
|
{
|
|
if (aPropertyValue) {
|
|
nsFrameList frames((nsIFrame*)aPropertyValue);
|
|
|
|
frames.DestroyFrames();
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Set the frames on the overflow list
|
|
*/
|
|
nsresult
|
|
nsContainerFrame::SetOverflowFrames(nsPresContext* aPresContext,
|
|
nsIFrame* aOverflowFrames)
|
|
{
|
|
nsresult rv =
|
|
aPresContext->PropertyTable()->SetProperty(this,
|
|
nsGkAtoms::overflowProperty,
|
|
aOverflowFrames,
|
|
DestroyOverflowFrames,
|
|
nsnull);
|
|
|
|
// Verify that we didn't overwrite an existing overflow list
|
|
NS_ASSERTION(rv != NS_PROPTABLE_PROP_OVERWRITTEN, "existing overflow list");
|
|
|
|
return rv;
|
|
}
|
|
|
|
// Destructor function for the proptable-stored framelists
|
|
static void
|
|
DestroyFrameList(void* aFrame,
|
|
nsIAtom* aPropertyName,
|
|
void* aPropertyValue,
|
|
void* aDtorData)
|
|
{
|
|
if (aPropertyValue)
|
|
static_cast<nsFrameList*>(aPropertyValue)->Destroy();
|
|
}
|
|
|
|
nsFrameList*
|
|
nsContainerFrame::GetPropTableFrames(nsPresContext* aPresContext,
|
|
nsIAtom* aPropID) const
|
|
{
|
|
nsPropertyTable* propTable = aPresContext->PropertyTable();
|
|
return static_cast<nsFrameList*>(propTable->GetProperty(this, aPropID));
|
|
}
|
|
|
|
nsFrameList*
|
|
nsContainerFrame::RemovePropTableFrames(nsPresContext* aPresContext,
|
|
nsIAtom* aPropID) const
|
|
{
|
|
nsPropertyTable* propTable = aPresContext->PropertyTable();
|
|
return static_cast<nsFrameList*>(propTable->UnsetProperty(this, aPropID));
|
|
}
|
|
|
|
PRBool
|
|
nsContainerFrame::RemovePropTableFrame(nsPresContext* aPresContext,
|
|
nsIFrame* aFrame,
|
|
nsIAtom* aPropID) const
|
|
{
|
|
nsFrameList* frameList = RemovePropTableFrames(aPresContext, aPropID);
|
|
if (!frameList) {
|
|
// No such list
|
|
return PR_FALSE;
|
|
}
|
|
if (!frameList->RemoveFrame(aFrame)) {
|
|
// Found list, but it doesn't have the frame. Put list back.
|
|
SetPropTableFrames(aPresContext, frameList, aPropID);
|
|
return PR_FALSE;
|
|
}
|
|
|
|
if (frameList->IsEmpty()) {
|
|
// Removed frame and now list is empty. Delete it.
|
|
delete frameList;
|
|
}
|
|
else {
|
|
// Removed frame, but list not empty. Put it back.
|
|
SetPropTableFrames(aPresContext, frameList, aPropID);
|
|
}
|
|
return PR_TRUE;
|
|
}
|
|
|
|
nsresult
|
|
nsContainerFrame::SetPropTableFrames(nsPresContext* aPresContext,
|
|
nsFrameList* aFrameList,
|
|
nsIAtom* aPropID) const
|
|
{
|
|
NS_PRECONDITION(aPresContext && aPropID && aFrameList, "null ptr");
|
|
nsresult rv = aPresContext->PropertyTable()->SetProperty(this, aPropID,
|
|
aFrameList, DestroyFrameList, nsnull);
|
|
NS_ASSERTION(rv != NS_PROPTABLE_PROP_OVERWRITTEN, "existing framelist");
|
|
return rv;
|
|
}
|
|
|
|
/**
|
|
* Push aFromChild and its next siblings to the next-in-flow. Change the
|
|
* geometric parent of each frame that's pushed. If there is no next-in-flow
|
|
* the frames are placed on the overflow list (and the geometric parent is
|
|
* left unchanged).
|
|
*
|
|
* Updates the next-in-flow's child count. Does <b>not</b> update the
|
|
* pusher's child count.
|
|
*
|
|
* @param aFromChild the first child frame to push. It is disconnected from
|
|
* aPrevSibling
|
|
* @param aPrevSibling aFromChild's previous sibling. Must not be null. It's
|
|
* an error to push a parent's first child frame
|
|
*/
|
|
void
|
|
nsContainerFrame::PushChildren(nsPresContext* aPresContext,
|
|
nsIFrame* aFromChild,
|
|
nsIFrame* aPrevSibling)
|
|
{
|
|
NS_PRECONDITION(nsnull != aFromChild, "null pointer");
|
|
NS_PRECONDITION(nsnull != aPrevSibling, "pushing first child");
|
|
NS_PRECONDITION(aPrevSibling->GetNextSibling() == aFromChild, "bad prev sibling");
|
|
|
|
// Disconnect aFromChild from its previous sibling
|
|
aPrevSibling->SetNextSibling(nsnull);
|
|
|
|
if (nsnull != GetNextInFlow()) {
|
|
// XXX This is not a very good thing to do. If it gets removed
|
|
// then remove the copy of this routine that doesn't do this from
|
|
// nsInlineFrame.
|
|
nsContainerFrame* nextInFlow = (nsContainerFrame*)GetNextInFlow();
|
|
// When pushing and pulling frames we need to check for whether any
|
|
// views need to be reparented.
|
|
for (nsIFrame* f = aFromChild; f; f = f->GetNextSibling()) {
|
|
nsHTMLContainerFrame::ReparentFrameView(aPresContext, f, this, nextInFlow);
|
|
}
|
|
nextInFlow->mFrames.InsertFrames(nextInFlow, nsnull, aFromChild);
|
|
}
|
|
else {
|
|
// Add the frames to our overflow list
|
|
SetOverflowFrames(aPresContext, aFromChild);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Moves any frames on the overflow lists (the prev-in-flow's overflow list and
|
|
* the receiver's overflow list) to the child list.
|
|
*
|
|
* Updates this frame's child count and content mapping.
|
|
*
|
|
* @return PR_TRUE if any frames were moved and PR_FALSE otherwise
|
|
*/
|
|
PRBool
|
|
nsContainerFrame::MoveOverflowToChildList(nsPresContext* aPresContext)
|
|
{
|
|
PRBool result = PR_FALSE;
|
|
|
|
// Check for an overflow list with our prev-in-flow
|
|
nsContainerFrame* prevInFlow = (nsContainerFrame*)GetPrevInFlow();
|
|
if (nsnull != prevInFlow) {
|
|
nsIFrame* prevOverflowFrames = prevInFlow->GetOverflowFrames(aPresContext,
|
|
PR_TRUE);
|
|
if (prevOverflowFrames) {
|
|
NS_ASSERTION(mFrames.IsEmpty(), "bad overflow list");
|
|
// When pushing and pulling frames we need to check for whether any
|
|
// views need to be reparented.
|
|
for (nsIFrame* f = prevOverflowFrames; f; f = f->GetNextSibling()) {
|
|
nsHTMLContainerFrame::ReparentFrameView(aPresContext, f, prevInFlow, this);
|
|
}
|
|
mFrames.InsertFrames(this, nsnull, prevOverflowFrames);
|
|
result = PR_TRUE;
|
|
}
|
|
}
|
|
|
|
// It's also possible that we have an overflow list for ourselves
|
|
nsIFrame* overflowFrames = GetOverflowFrames(aPresContext, PR_TRUE);
|
|
if (overflowFrames) {
|
|
NS_ASSERTION(mFrames.NotEmpty(), "overflow list w/o frames");
|
|
mFrames.AppendFrames(nsnull, overflowFrames);
|
|
result = PR_TRUE;
|
|
}
|
|
return result;
|
|
}
|
|
|
|
nsOverflowContinuationTracker::nsOverflowContinuationTracker(nsPresContext* aPresContext,
|
|
nsContainerFrame* aFrame,
|
|
PRBool aWalkOOFFrames,
|
|
PRBool aSkipOverflowContainerChildren)
|
|
: mOverflowContList(nsnull),
|
|
mPrevOverflowCont(nsnull),
|
|
mSentry(nsnull),
|
|
mParent(aFrame),
|
|
mSkipOverflowContainerChildren(aSkipOverflowContainerChildren),
|
|
mWalkOOFFrames(aWalkOOFFrames)
|
|
{
|
|
NS_PRECONDITION(aFrame, "null frame pointer");
|
|
nsContainerFrame* next = static_cast<nsContainerFrame*>
|
|
(aFrame->GetNextInFlow());
|
|
if (next) {
|
|
mOverflowContList =
|
|
next->GetPropTableFrames(aPresContext,
|
|
nsGkAtoms::overflowContainersProperty);
|
|
if (mOverflowContList) {
|
|
mParent = next;
|
|
SetUpListWalker();
|
|
}
|
|
}
|
|
if (!mOverflowContList) {
|
|
mOverflowContList =
|
|
mParent->GetPropTableFrames(aPresContext,
|
|
nsGkAtoms::excessOverflowContainersProperty);
|
|
if (mOverflowContList) {
|
|
SetUpListWalker();
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Helper function to walk past overflow continuations whose prev-in-flow
|
|
* isn't a normal child and to set mSentry and mPrevOverflowCont correctly.
|
|
*/
|
|
void
|
|
nsOverflowContinuationTracker::SetUpListWalker()
|
|
{
|
|
NS_ASSERTION(!mSentry && !mPrevOverflowCont,
|
|
"forgot to reset mSentry or mPrevOverflowCont");
|
|
if (mOverflowContList) {
|
|
nsIFrame* cur = mOverflowContList->FirstChild();
|
|
if (mSkipOverflowContainerChildren) {
|
|
while (cur && (cur->GetPrevInFlow()->GetStateBits()
|
|
& NS_FRAME_IS_OVERFLOW_CONTAINER)) {
|
|
mPrevOverflowCont = cur;
|
|
cur = cur->GetNextSibling();
|
|
}
|
|
while (cur && (!(cur->GetStateBits() & NS_FRAME_OUT_OF_FLOW)
|
|
== mWalkOOFFrames)) {
|
|
mPrevOverflowCont = cur;
|
|
cur = cur->GetNextSibling();
|
|
}
|
|
}
|
|
if (cur) {
|
|
mSentry = cur->GetPrevInFlow();
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Helper function to step forward through the overflow continuations list.
|
|
* Sets mSentry and mPrevOverflowCont, skipping over OOF or non-OOF frames
|
|
* as appropriate. May only be called when we have already set up an
|
|
* mOverflowContList; mOverflowContList cannot be null.
|
|
*/
|
|
void
|
|
nsOverflowContinuationTracker::StepForward()
|
|
{
|
|
NS_PRECONDITION(mOverflowContList, "null list");
|
|
|
|
// Step forward
|
|
if (mPrevOverflowCont) {
|
|
mPrevOverflowCont = mPrevOverflowCont->GetNextSibling();
|
|
}
|
|
else {
|
|
mPrevOverflowCont = mOverflowContList->FirstChild();
|
|
}
|
|
|
|
// Skip over oof or non-oof frames as appropriate
|
|
if (mSkipOverflowContainerChildren) {
|
|
nsIFrame* cur = mPrevOverflowCont->GetNextSibling();
|
|
while (cur && (!(cur->GetStateBits() & NS_FRAME_OUT_OF_FLOW)
|
|
== mWalkOOFFrames)) {
|
|
mPrevOverflowCont = cur;
|
|
cur = cur->GetNextSibling();
|
|
}
|
|
}
|
|
|
|
// Set up the sentry
|
|
mSentry = (mPrevOverflowCont->GetNextSibling())
|
|
? mPrevOverflowCont->GetNextSibling()->GetPrevInFlow()
|
|
: nsnull;
|
|
}
|
|
|
|
nsresult
|
|
nsOverflowContinuationTracker::Insert(nsIFrame* aOverflowCont,
|
|
nsReflowStatus& aReflowStatus)
|
|
{
|
|
NS_PRECONDITION(aOverflowCont, "null frame pointer");
|
|
NS_PRECONDITION(!mSkipOverflowContainerChildren || mWalkOOFFrames ==
|
|
!!(aOverflowCont->GetStateBits() & NS_FRAME_OUT_OF_FLOW),
|
|
"shouldn't insert frame that doesn't match walker type");
|
|
NS_PRECONDITION(aOverflowCont->GetPrevInFlow(),
|
|
"overflow containers must have a prev-in-flow");
|
|
nsresult rv = NS_OK;
|
|
if (!mSentry || aOverflowCont != mSentry->GetNextInFlow()) {
|
|
// Not in our list, so we need to add it
|
|
nsPresContext* presContext = aOverflowCont->PresContext();
|
|
if (aOverflowCont->GetStateBits() & NS_FRAME_IS_OVERFLOW_CONTAINER) {
|
|
// aOverflowCont is in some other overflow container list,
|
|
// steal it first
|
|
NS_ASSERTION(!(mOverflowContList &&
|
|
mOverflowContList->ContainsFrame(aOverflowCont)),
|
|
"overflow containers out of order");
|
|
rv = static_cast<nsContainerFrame*>(aOverflowCont->GetParent())
|
|
->StealFrame(presContext, aOverflowCont);
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
}
|
|
else {
|
|
aOverflowCont->AddStateBits(NS_FRAME_IS_OVERFLOW_CONTAINER);
|
|
}
|
|
if (!mOverflowContList) {
|
|
mOverflowContList = new nsFrameList();
|
|
rv = mParent->SetPropTableFrames(presContext,
|
|
mOverflowContList, nsGkAtoms::excessOverflowContainersProperty);
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
SetUpListWalker();
|
|
}
|
|
if (aOverflowCont->GetParent() != mParent) {
|
|
nsHTMLContainerFrame::ReparentFrameView(presContext, aOverflowCont,
|
|
aOverflowCont->GetParent(),
|
|
mParent);
|
|
}
|
|
mOverflowContList->InsertFrame(mParent, mPrevOverflowCont, aOverflowCont);
|
|
aReflowStatus |= NS_FRAME_REFLOW_NEXTINFLOW;
|
|
}
|
|
|
|
// If we need to reflow it, mark it dirty
|
|
if (aReflowStatus & NS_FRAME_REFLOW_NEXTINFLOW)
|
|
aOverflowCont->AddStateBits(NS_FRAME_IS_DIRTY);
|
|
|
|
// It's in our list, just step forward
|
|
StepForward();
|
|
NS_ASSERTION(mPrevOverflowCont == aOverflowCont ||
|
|
(mSkipOverflowContainerChildren &&
|
|
(mPrevOverflowCont->GetStateBits() & NS_FRAME_OUT_OF_FLOW) !=
|
|
(aOverflowCont->GetStateBits() & NS_FRAME_OUT_OF_FLOW)),
|
|
"OverflowContTracker in unexpected state");
|
|
return rv;
|
|
}
|
|
|
|
void
|
|
nsOverflowContinuationTracker::Finish(nsIFrame* aChild)
|
|
{
|
|
NS_PRECONDITION(aChild, "null ptr");
|
|
NS_PRECONDITION(aChild->GetNextInFlow(),
|
|
"supposed to call Finish *before* deleting next-in-flow!");
|
|
if (aChild == mSentry) {
|
|
// Make sure we drop all references if this was the only frame
|
|
// in the overflow containers list
|
|
if (mOverflowContList->FirstChild() == aChild->GetNextInFlow()
|
|
&& !aChild->GetNextInFlow()->GetNextSibling()) {
|
|
mOverflowContList = nsnull;
|
|
mPrevOverflowCont = nsnull;
|
|
mSentry = nsnull;
|
|
mParent = static_cast<nsContainerFrame*>(aChild->GetParent());
|
|
}
|
|
else {
|
|
// Step past aChild
|
|
nsIFrame* prevOverflowCont = mPrevOverflowCont;
|
|
StepForward();
|
|
if (mPrevOverflowCont == aChild->GetNextInFlow()) {
|
|
// Pull mPrevOverflowChild back to aChild's prevSibling:
|
|
// aChild will be removed from our list by our caller
|
|
mPrevOverflowCont = prevOverflowCont;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
/////////////////////////////////////////////////////////////////////////////
|
|
// Debugging
|
|
|
|
#ifdef NS_DEBUG
|
|
NS_IMETHODIMP
|
|
nsContainerFrame::List(FILE* out, PRInt32 aIndent) const
|
|
{
|
|
IndentBy(out, aIndent);
|
|
ListTag(out);
|
|
#ifdef DEBUG_waterson
|
|
fprintf(out, " [parent=%p]", static_cast<void*>(mParent));
|
|
#endif
|
|
if (HasView()) {
|
|
fprintf(out, " [view=%p]", static_cast<void*>(GetView()));
|
|
}
|
|
if (nsnull != mNextSibling) {
|
|
fprintf(out, " next=%p", static_cast<void*>(mNextSibling));
|
|
}
|
|
if (nsnull != GetPrevContinuation()) {
|
|
fprintf(out, " prev-continuation=%p", static_cast<void*>(GetPrevContinuation()));
|
|
}
|
|
if (nsnull != GetNextContinuation()) {
|
|
fprintf(out, " next-continuation=%p", static_cast<void*>(GetNextContinuation()));
|
|
}
|
|
fprintf(out, " {%d,%d,%d,%d}", mRect.x, mRect.y, mRect.width, mRect.height);
|
|
if (0 != mState) {
|
|
fprintf(out, " [state=%08x]", mState);
|
|
}
|
|
fprintf(out, " [content=%p]", static_cast<void*>(mContent));
|
|
nsContainerFrame* f = const_cast<nsContainerFrame*>(this);
|
|
nsRect* overflowArea = f->GetOverflowAreaProperty(PR_FALSE);
|
|
if (overflowArea) {
|
|
fprintf(out, " [overflow=%d,%d,%d,%d]", overflowArea->x, overflowArea->y,
|
|
overflowArea->width, overflowArea->height);
|
|
}
|
|
fprintf(out, " [sc=%p]", static_cast<void*>(mStyleContext));
|
|
nsIAtom* pseudoTag = mStyleContext->GetPseudoType();
|
|
if (pseudoTag) {
|
|
nsAutoString atomString;
|
|
pseudoTag->ToString(atomString);
|
|
fprintf(out, " pst=%s",
|
|
NS_LossyConvertUTF16toASCII(atomString).get());
|
|
}
|
|
|
|
// Output the children
|
|
nsIAtom* listName = nsnull;
|
|
PRInt32 listIndex = 0;
|
|
PRBool outputOneList = PR_FALSE;
|
|
do {
|
|
nsIFrame* kid = GetFirstChild(listName);
|
|
if (nsnull != kid) {
|
|
if (outputOneList) {
|
|
IndentBy(out, aIndent);
|
|
}
|
|
outputOneList = PR_TRUE;
|
|
nsAutoString tmp;
|
|
if (nsnull != listName) {
|
|
listName->ToString(tmp);
|
|
fputs(NS_LossyConvertUTF16toASCII(tmp).get(), out);
|
|
}
|
|
fputs("<\n", out);
|
|
while (nsnull != kid) {
|
|
// Verify the child frame's parent frame pointer is correct
|
|
NS_ASSERTION(kid->GetParent() == (nsIFrame*)this, "bad parent frame pointer");
|
|
|
|
// Have the child frame list
|
|
nsIFrameDebug* frameDebug;
|
|
if (NS_SUCCEEDED(kid->QueryInterface(NS_GET_IID(nsIFrameDebug), (void**)&frameDebug))) {
|
|
frameDebug->List(out, aIndent + 1);
|
|
}
|
|
kid = kid->GetNextSibling();
|
|
}
|
|
IndentBy(out, aIndent);
|
|
fputs(">\n", out);
|
|
}
|
|
listName = GetAdditionalChildListName(listIndex++);
|
|
} while(nsnull != listName);
|
|
|
|
if (!outputOneList) {
|
|
fputs("<>\n", out);
|
|
}
|
|
|
|
return NS_OK;
|
|
}
|
|
#endif
|