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125 lines
4.4 KiB
C++
125 lines
4.4 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 MathML Project.
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*
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* The Initial Developer of the Original Code is
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* The University Of Queensland.
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* Portions created by the Initial Developer are Copyright (C) 1999
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* the Initial Developer. All Rights Reserved.
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*
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* Contributor(s):
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* Roger B. Sidje <rbs@maths.uq.edu.au>
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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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// a helper frame class to wrap non-MathML frames so that foreign elements
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// (e.g., html:img) can mix better with other surrounding MathML markups
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//
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#ifndef nsMathMLForeignFrameWrapper_h___
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#define nsMathMLForeignFrameWrapper_h___
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#include "nsCOMPtr.h"
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#include "nsMathMLContainerFrame.h"
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class nsMathMLForeignFrameWrapper : public nsBlockFrame,
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public nsMathMLFrame {
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public:
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friend nsIFrame* NS_NewMathMLForeignFrameWrapper(nsIPresShell* aPresShell, nsStyleContext* aContext);
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NS_DECL_QUERYFRAME
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// Overloaded nsIMathMLFrame methods
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NS_IMETHOD
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UpdatePresentationDataFromChildAt(PRInt32 aFirstIndex,
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PRInt32 aLastIndex,
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PRUint32 aFlagsValues,
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PRUint32 aFlagsToUpdate)
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{
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nsMathMLContainerFrame::PropagatePresentationDataFromChildAt(this,
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aFirstIndex, aLastIndex, aFlagsValues, aFlagsToUpdate);
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return NS_OK;
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}
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// overloaded nsBlockFrame methods
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#ifdef NS_DEBUG
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NS_IMETHOD
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SetInitialChildList(nsIAtom* aListName,
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nsIFrame* aChildList)
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{
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nsresult rv = nsBlockFrame::SetInitialChildList(aListName, aChildList);
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// cannot use mFrames{.FirstChild()|.etc} since the block code doesn't set mFrames
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nsFrameList frameList(aChildList);
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NS_ASSERTION(frameList.FirstChild() && frameList.GetLength() == 1,
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"there must be one and only one child frame");
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return rv;
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}
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#endif
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NS_IMETHOD
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Reflow(nsPresContext* aPresContext,
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nsHTMLReflowMetrics& aDesiredSize,
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const nsHTMLReflowState& aReflowState,
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nsReflowStatus& aStatus);
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// we are just a wrapper and these methods shouldn't be called
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NS_IMETHOD
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AppendFrames(nsIAtom* aListName,
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nsIFrame* aFrameList)
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{
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NS_NOTREACHED("unsupported operation");
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return NS_ERROR_NOT_IMPLEMENTED;
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}
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NS_IMETHOD
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InsertFrames(nsIAtom* aListName,
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nsIFrame* aPrevFrame,
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nsIFrame* aFrameList)
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{
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NS_NOTREACHED("unsupported operation");
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return NS_ERROR_NOT_IMPLEMENTED;
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}
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// Our life is bound to the life of our unique child.
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// When our child goes away, we ask our parent to delete us
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NS_IMETHOD
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RemoveFrame(nsIAtom* aListName,
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nsIFrame* aOldFrame)
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{
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return mParent->RemoveFrame(aListName, this);
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}
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protected:
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nsMathMLForeignFrameWrapper(nsStyleContext* aContext) : nsBlockFrame(aContext) {}
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virtual ~nsMathMLForeignFrameWrapper() {}
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};
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#endif /* nsMathMLForeignFrameWrapper_h___ */
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