pjs/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/
*
* 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 mozilla.org code.
*
* The Initial Developer of the Original Code is Netscape
* Communications Corporation. Portions created by Netscape are
* Copyright (C) 1998 Netscape Communications Corporation. All
* Rights Reserved.
*
* Contributor(s):
*/
#ifndef nsHTMLReflowCommand_h___
#define nsHTMLReflowCommand_h___
#include "nsIReflowCommand.h"
#include "nsVoidArray.h"
class nsIAtom;
/**
* 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);
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);
NS_IMETHOD GetTarget(nsIFrame*& aTargetFrame) const;
NS_IMETHOD SetTarget(nsIFrame* aTargetFrame);
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;
NS_IMETHOD GetChildFrame(nsIFrame*& aChildFrame) const;
NS_IMETHOD GetChildListName(nsIAtom*& aListName) const;
NS_IMETHOD SetChildListName(nsIAtom* aListName);
NS_IMETHOD GetPrevSiblingFrame(nsIFrame*& aSiblingFrame) const;
NS_IMETHOD List(FILE* out) const;
protected:
void BuildPath();
nsIFrame* GetContainingBlock(nsIFrame* aFloater) const;
private:
ReflowType mType;
nsIFrame* mTargetFrame;
nsIFrame* mChildFrame;
nsIFrame* mPrevSiblingFrame;
nsIAtom* mAttribute;
nsIAtom* mListName;
nsVoidArray mPath;
};
#endif /* nsHTMLReflowCommand_h___ */