gecko-dev/layout/generic/nsHTMLReflowCommand.h

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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* ***** BEGIN LICENSE BLOCK *****
* Version: NPL 1.1/GPL 2.0/LGPL 2.1
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*
* 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 Communications Corporation.
* Portions created by the Initial Developer are Copyright (C) 1998
* 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 NPL, 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 NPL, the GPL or the LGPL.
*
* ***** END LICENSE BLOCK ***** */
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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;
nsAutoVoidArray mPath;
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PRInt32 mFlags;
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};
#endif /* nsHTMLReflowCommand_h___ */