gecko-dev/layout/generic/nsHTMLReflowCommand.h
troy%netscape.com 0f8e34e2e2 Added additional parameter to GetNext() that specifies whether the frame is
removed from the path. This allows peeking at the next frame in the reflow
chain
1999-01-20 05:11:17 +00:00

88 lines
2.9 KiB
C++

/* -*- 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 1.0 (the "NPL"); you may not use this file except in
* compliance with the NPL. You may obtain a copy of the NPL at
* http://www.mozilla.org/NPL/
*
* Software distributed under the NPL is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the NPL
* for the specific language governing rights and limitations under the
* NPL.
*
* The Initial Developer of this code under the NPL is Netscape
* Communications Corporation. Portions created by Netscape are
* Copyright (C) 1998 Netscape Communications Corporation. All Rights
* Reserved.
*/
#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);
/**
* Construct an HTML reflow command of type FrameInserted, with target
* frame aTargetFrame, and with the specified child and previous sibling
* frames.
*/
nsHTMLReflowCommand(nsIFrame* aTargetFrame,
nsIFrame* aChildFrame,
nsIFrame* aPrevSiblingFrame);
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;
protected:
void BuildPath();
nsIFrame* GetContainingBlock(nsIFrame* aFloater);
private:
ReflowType mType;
nsIFrame* mTargetFrame;
nsIFrame* mChildFrame;
nsIFrame* mPrevSiblingFrame;
nsIAtom* mAttribute;
nsIAtom* mListName;
nsVoidArray mPath;
};
#endif /* nsHTMLReflowCommand_h___ */