pjs/layout/generic/nsQueryFrame.h

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/* ***** BEGIN LICENSE BLOCK *****
* Version: MPL 1.1/GPL 2.0/LGPL 2.1
*
* The contents of this file are subject to the Mozilla Public License Version
* 1.1 (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
* http://www.mozilla.org/MPL/
*
* Software distributed under the License is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
* for the specific language governing rights and limitations under the
* License.
*
* The Original Code is the Mozilla layout engine.
*
* The Initial Developer of the Original Code is
* the Mozilla Foundation <http://www.mozilla.org/>.
*
* Portions created by the Initial Developer are Copyright (C) 2008
* the Initial Developer. All Rights Reserved.
*
* Contributor(s):
*
* Alternatively, the contents of this file may be used under the terms of
* either the GNU General Public License Version 2 or later (the "GPL"), or
* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
* in which case the provisions of the GPL or the LGPL are applicable instead
* of those above. If you wish to allow use of your version of this file only
* under the terms of either the GPL or the LGPL, and not to allow others to
* use your version of this file under the terms of the MPL, indicate your
* decision by deleting the provisions above and replace them with the notice
* and other provisions required by the GPL or the LGPL. If you do not delete
* the provisions above, a recipient may use your version of this file under
* the terms of any one of the MPL, the GPL or the LGPL.
*
* ***** END LICENSE BLOCK ***** */
#ifndef nsQueryFrame_h
#define nsQueryFrame_h
#include "nscore.h"
#define NS_DECL_QUERYFRAME_TARGET(classname) \
static const nsQueryFrame::FrameIID kFrameIID = nsQueryFrame::classname##_id;
#define NS_DECL_QUERYFRAME \
virtual void* QueryFrame(FrameIID id);
#define NS_QUERYFRAME_HEAD(class) \
void* class::QueryFrame(FrameIID id) { switch (id) {
#define NS_QUERYFRAME_ENTRY(class) \
case class::kFrameIID: return static_cast<class*>(this);
#define NS_QUERYFRAME_ENTRY_CONDITIONAL(class, condition) \
case class::kFrameIID: \
if (condition) return static_cast<class*>(this); \
break;
#define NS_QUERYFRAME_TAIL_INHERITING(class) \
default: break; \
} \
return class::QueryFrame(id); \
}
#define NS_QUERYFRAME_TAIL_INHERITANCE_ROOT \
default: break; \
} \
return nsnull; \
}
class nsQueryFrame
{
public:
enum FrameIID {
BRFrame_id,
nsAutoRepeatBoxFrame_id,
nsBCTableCellFrame_id,
nsBlockFrame_id,
nsBox_id,
nsBoxFrame_id,
nsBulletFrame_id,
nsButtonBoxFrame_id,
nsCanvasFrame_id,
nsColumnSetFrame_id,
nsComboboxControlFrame_id,
nsComboboxDisplayFrame_id,
nsContainerFrame_id,
nsContinuingTextFrame_id,
nsDeckFrame_id,
nsDocElementBoxFrame_id,
nsFieldSetFrame_id,
nsFileControlFrame_id,
nsFirstLetterFrame_id,
nsFirstLineFrame_id,
nsFormControlFrame_id,
nsFrame_id,
nsGfxButtonControlFrame_id,
nsGfxCheckboxControlFrame_id,
nsGfxRadioControlFrame_id,
nsGridRowGroupFrame_id,
nsGridRowLeafFrame_id,
nsGroupBoxFrame_id,
nsHTMLButtonControlFrame_id,
nsHTMLCanvasFrame_id,
nsHTMLContainerFrame_id,
nsHTMLFramesetBlankFrame_id,
nsHTMLFramesetBorderFrame_id,
nsHTMLFramesetFrame_id,
nsHTMLScrollFrame_id,
nsIAnonymousContentCreator_id,
nsIComboboxControlFrame_id,
nsIFormControlFrame_id,
nsIFrame_id,
nsIFrameFrame_id,
nsIListControlFrame_id,
nsIMathMLFrame_id,
nsIMenuFrame_id,
nsIObjectFrame_id,
nsIPageSequenceFrame_id,
nsIPercentHeightObserver_id,
nsIRootBox_id,
nsISVGChildFrame_id,
nsISVGGlyphFragmentLeaf_id,
nsISVGGlyphFragmentNode_id,
nsISVGSVGFrame_id,
nsIScrollableFrame_id,
nsIScrollbarFrame_id,
nsIScrollbarMediator_id,
nsISelectControlFrame_id,
nsIStatefulFrame_id,
nsITableCellLayout_id,
nsITableLayout_id,
nsITextControlFrame_id,
nsITreeBoxObject_id,
nsImageBoxFrame_id,
nsImageControlFrame_id,
nsImageFrame_id,
nsInlineFrame_id,
nsIsIndexFrame_id,
nsLeafBoxFrame_id,
nsLeafFrame_id,
nsLegendFrame_id,
nsListBoxBodyFrame_id,
nsListControlFrame_id,
nsListItemFrame_id,
nsMathMLContainerFrame_id,
nsMathMLForeignFrameWrapper_id,
nsMathMLFrame_id,
nsMathMLmactionFrame_id,
nsMathMLmathBlockFrame_id,
nsMathMLmathInlineFrame_id,
nsMathMLmencloseFrame_id,
nsMathMLmfencedFrame_id,
nsMathMLmfracFrame_id,
nsMathMLmmultiscriptsFrame_id,
nsMathMLmoFrame_id,
nsMathMLmoverFrame_id,
nsMathMLmpaddedFrame_id,
nsMathMLmphantomFrame_id,
nsMathMLmrootFrame_id,
nsMathMLmrowFrame_id,
nsMathMLmspaceFrame_id,
nsMathMLmsqrtFrame_id,
nsMathMLmstyleFrame_id,
nsMathMLmsubFrame_id,
nsMathMLmsubsupFrame_id,
nsMathMLmsupFrame_id,
nsMathMLmtableFrame_id,
nsMathMLmtableOuterFrame_id,
nsMathMLmtdFrame_id,
nsMathMLmtdInnerFrame_id,
nsMathMLmtrFrame_id,
nsMathMLmunderFrame_id,
nsMathMLmunderoverFrame_id,
nsMathMLsemanticsFrame_id,
nsMathMLTokenFrame_id,
nsMenuBarFrame_id,
nsMenuFrame_id,
nsMenuPopupFrame_id,
nsObjectFrame_id,
nsPageBreakFrame_id,
nsPageContentFrame_id,
nsPageFrame_id,
nsPlaceholderFrame_id,
nsPopupSetFrame_id,
nsProgressFrame_id,
nsProgressMeterFrame_id,
nsResizerFrame_id,
nsRootBoxFrame_id,
nsScrollbarButtonFrame_id,
nsScrollbarFrame_id,
nsSelectsAreaFrame_id,
nsSimplePageSequenceFrame_id,
nsSliderFrame_id,
nsSplittableFrame_id,
nsSplitterFrame_id,
nsStackFrame_id,
nsSubDocumentFrame_id,
nsSVGAFrame_id,
nsSVGClipPathFrame_id,
nsSVGContainerFrame_id,
nsSVGDisplayContainerFrame_id,
nsSVGFilterFrame_id,
nsSVGForeignObjectFrame_id,
nsSVGGenericContainerFrame_id,
nsSVGGeometryFrame_id,
nsSVGGFrame_id,
nsSVGGlyphFrame_id,
nsSVGGradientFrame_id,
nsSVGImageFrame_id,
nsSVGInnerSVGFrame_id,
nsSVGLeafFrame_id,
nsSVGLinearGradientFrame_id,
nsSVGMarkerFrame_id,
nsSVGMaskFrame_id,
nsSVGOuterSVGFrame_id,
nsSVGPaintServerFrame_id,
nsSVGPathGeometryFrame_id,
nsSVGPatternFrame_id,
nsSVGRadialGradientFrame_id,
nsSVGStopFrame_id,
nsSVGSwitchFrame_id,
nsSVGTextContainerFrame_id,
nsSVGTextFrame_id,
nsSVGTextPathFrame_id,
nsSVGTSpanFrame_id,
nsSVGUseFrame_id,
nsTableCaptionFrame_id,
nsTableCellFrame_id,
nsTableColFrame_id,
nsTableColGroupFrame_id,
nsTableFrame_id,
nsTableOuterFrame_id,
nsTableRowFrame_id,
nsTableRowGroupFrame_id,
nsTextBoxFrame_id,
nsTextControlFrame_id,
nsTextFrame_id,
nsTitleBarFrame_id,
nsTreeBodyFrame_id,
nsTreeColFrame_id,
nsVideoFrame_id,
nsXULLabelFrame_id,
nsXULScrollFrame_id,
ViewportFrame_id,
// The PresArena implementation uses this bit to distinguish
// objects allocated by size (that is, non-frames) from objects
// allocated by code (that is, frames). It should not collide
// with any frame ID. It is not 0x80000000 to avoid the question
// of whether enumeration constants are signed.
NON_FRAME_MARKER = 0x40000000
};
virtual void* QueryFrame(FrameIID id) = 0;
};
class do_QueryFrame
{
public:
do_QueryFrame(nsQueryFrame *s) : mRawPtr(s) { }
template<class Dest>
operator Dest*() {
if (!mRawPtr)
return nsnull;
return reinterpret_cast<Dest*>(mRawPtr->QueryFrame(Dest::kFrameIID));
}
private:
nsQueryFrame *mRawPtr;
};
#endif // nsQueryFrame_h