зеркало из https://github.com/mozilla/gecko-dev.git
130 строки
5.0 KiB
C++
130 строки
5.0 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
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*
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* The contents of this file are subject to the Netscape Public License
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* Version 1.0 (the "NPL"); you may not use this file except in
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* compliance with the NPL. You may obtain a copy of the NPL at
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* http://www.mozilla.org/NPL/
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*
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* Software distributed under the NPL is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the NPL
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* for the specific language governing rights and limitations under the
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* NPL.
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*
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* The Initial Developer of this code under the NPL is Netscape
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* Communications Corporation. Portions created by Netscape are
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* Copyright (C) 1998 Netscape Communications Corporation. All Rights
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* Reserved.
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*/
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#ifndef nsContainerFrame_h___
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#define nsContainerFrame_h___
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#include "nsSplittableFrame.h"
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#include "nsFrameList.h"
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/**
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* Implementation of a container frame.
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*/
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class nsContainerFrame : public nsSplittableFrame
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{
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public:
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// nsIFrame overrides
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NS_IMETHOD SetInitialChildList(nsIPresContext& aPresContext,
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nsIAtom* aListName,
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nsIFrame* aChildList);
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NS_IMETHOD FirstChild(nsIAtom* aListName, nsIFrame** aFirstChild) const;
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NS_IMETHOD DeleteFrame(nsIPresContext& aPresContext);
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NS_IMETHOD Paint(nsIPresContext& aPresContext,
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nsIRenderingContext& aRenderingContext,
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const nsRect& aDirtyRect,
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nsFramePaintLayer aWhichLayer);
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NS_IMETHOD GetFrameForPoint(const nsPoint& aPoint,
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nsIFrame** aFrame);
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NS_IMETHOD ReResolveStyleContext(nsIPresContext* aPresContext,
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nsIStyleContext* aParentContext,
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PRInt32 aParentChange,
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nsStyleChangeList* aChangeList,
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PRInt32* aLocalChange);
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NS_IMETHOD List(FILE* out, PRInt32 aIndent) const;
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// nsIHTMLReflow overrides
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NS_IMETHOD DidReflow(nsIPresContext& aPresContext,
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nsDidReflowStatus aStatus);
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// nsContainerFrame methods
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virtual void DeleteChildsNextInFlow(nsIPresContext& aPresContext,
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nsIFrame* aChild);
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static PRInt32 LengthOf(nsIFrame* aFrameList) {
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nsFrameList tmp(aFrameList);
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return tmp.GetLength();
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}
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protected:
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nsContainerFrame();
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~nsContainerFrame();
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nsresult GetFrameForPointUsing(const nsPoint& aPoint,
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nsIAtom* aList,
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nsIFrame** aFrame);
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virtual void PaintChildren(nsIPresContext& aPresContext,
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nsIRenderingContext& aRenderingContext,
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const nsRect& aDirtyRect,
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nsFramePaintLayer aWhichLayer);
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virtual void PaintChild(nsIPresContext& aPresContext,
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nsIRenderingContext& aRenderingContext,
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const nsRect& aDirtyRect,
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nsIFrame* aFrame,
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nsFramePaintLayer aWhichLayer);
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/**
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* Queries the child frame for the nsIHTMLReflow interface and if it's
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* supported invokes the WillReflow() and Reflow() member functions. If
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* the reflow succeeds and the child frame is complete, deletes any
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* next-in-flows using DeleteChildsNextInFlow()
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*/
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nsresult ReflowChild(nsIFrame* aKidFrame,
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nsIPresContext& aPresContext,
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nsHTMLReflowMetrics& aDesiredSize,
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const nsHTMLReflowState& aReflowState,
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nsReflowStatus& aStatus);
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/**
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* Moves any frames on both the prev-in-flow's overflow list and the
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* receiver's overflow to the receiver's child list.
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*
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* Resets the overlist pointers to nsnull, and updates the receiver's child
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* count and content mapping.
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*
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* @return PR_TRUE if any frames were moved and PR_FALSE otherwise
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*/
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PRBool MoveOverflowToChildList();
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/**
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* Push aFromChild and its next siblings to the next-in-flow. Change
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* the geometric parent of each frame that's pushed. If there is no
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* next-in-flow the frames are placed on the overflow list (and the
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* geometric parent is left unchanged).
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*
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* Updates the next-in-flow's child count. Does <b>not</b> update the
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* pusher's child count.
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*
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* @param aFromChild the first child frame to push. It is disconnected from
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* aPrevSibling
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* @param aPrevSibling aFromChild's previous sibling. Must not be null.
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* It's an error to push a parent's first child frame
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*/
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void PushChildren(nsIFrame* aFromChild, nsIFrame* aPrevSibling);
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/**
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*/
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nsresult AddFrame(const nsHTMLReflowState& aReflowState,
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nsIFrame * aAddedFrame);
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nsFrameList mFrames;
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nsFrameList mOverflowFrames;
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};
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#endif /* nsContainerFrame_h___ */
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