gecko-dev/layout/generic/nsHTMLReflowCommand.h

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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
*
* The contents of this file are subject to the Netscape 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/NPL/
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*
* 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.
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*
* The Original Code is mozilla.org code.
*
* The Initial Developer of the Original Code is Netscape
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* Communications Corporation. Portions created by Netscape are
* Copyright (C) 1998 Netscape Communications Corporation. All
* Rights Reserved.
*
* Contributor(s):
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*/
#ifndef nsHTMLReflowCommand_h___
#define nsHTMLReflowCommand_h___
#include "nsIReflowCommand.h"
#include "nsVoidArray.h"
class nsIAtom;
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/**
* An HTML reflow command
*/
class nsHTMLReflowCommand : public nsIReflowCommand {
public:
/**
* Construct an HTML reflow command of type aReflowType and with target
* frame aTargetFrame. You can also specify an optional child frame, e.g.
* to indicate the inserted child frame
*/
nsHTMLReflowCommand(nsIFrame* aTargetFrame,
ReflowType aReflowType,
nsIFrame* aChildFrame = nsnull,
nsIAtom* aAttribute = nsnull);
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virtual ~nsHTMLReflowCommand();
// nsISupports
NS_DECL_ISUPPORTS
// nsIReflowCommand
NS_IMETHOD Dispatch(nsIPresContext* aPresContext,
nsHTMLReflowMetrics& aDesiredSize,
const nsSize& aMaxSize,
nsIRenderingContext& aRendContext);
NS_IMETHOD GetNext(nsIFrame*& aNextFrame, PRBool aRemove);
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NS_IMETHOD GetTarget(nsIFrame*& aTargetFrame) const;
NS_IMETHOD SetTarget(nsIFrame* aTargetFrame);
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NS_IMETHOD GetType(ReflowType& aReflowType) const;
/** can return nsnull. If nsnull is not returned, the caller must NS_RELEASE aAttribute */
NS_IMETHOD GetAttribute(nsIAtom *& aAttribute) const;
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NS_IMETHOD GetChildFrame(nsIFrame*& aChildFrame) const;
NS_IMETHOD GetChildListName(nsIAtom*& aListName) const;
NS_IMETHOD SetChildListName(nsIAtom* aListName);
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NS_IMETHOD GetPrevSiblingFrame(nsIFrame*& aSiblingFrame) const;
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NS_IMETHOD List(FILE* out) const;
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NS_IMETHOD GetFlags(PRInt32* aFlags);
NS_IMETHOD SetFlags(PRInt32 aFlags);
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protected:
void BuildPath();
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nsIFrame* GetContainingBlock(nsIFrame* aFloater) const;
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private:
ReflowType mType;
nsIFrame* mTargetFrame;
nsIFrame* mChildFrame;
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nsIFrame* mPrevSiblingFrame;
nsIAtom* mAttribute;
nsIAtom* mListName;
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nsVoidArray mPath;
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PRInt32 mFlags;
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};
#endif /* nsHTMLReflowCommand_h___ */