86 lines
3.5 KiB
C++
86 lines
3.5 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 nsPlaceholderFrame_h___
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#define nsPlaceholderFrame_h___
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#include "nsFrame.h"
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#include "nsIInlineReflow.h"
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// Implementation of a frame that's used as a placeholder for an anchored item
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class nsPlaceholderFrame : public nsFrame, public nsIInlineReflow {
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public:
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/**
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* Create a new placeholder frame
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*/
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static nsresult NewFrame(nsIFrame** aInstancePtrResult,
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nsIContent* aContent,
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nsIFrame* aParent);
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// Returns the associated anchored item
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nsIFrame* GetAnchoredItem() const {return mAnchoredItem;}
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// nsISupports
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NS_IMETHOD QueryInterface(REFNSIID aIID, void** aInstancePtr);
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// nsIFrame overrides
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NS_IMETHOD FindTextRuns(nsCSSLineLayout& aLineLayout,
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nsIReflowCommand* aReflowCommand);
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NS_IMETHOD InlineReflow(nsCSSLineLayout& aLineLayout,
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nsReflowMetrics& aDesiredSize,
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const nsReflowState& aReflowState);
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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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NS_IMETHOD ContentAppended(nsIPresShell* aShell,
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nsIPresContext* aPresContext,
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nsIContent* aContainer);
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NS_IMETHOD ContentInserted(nsIPresShell* aShell,
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nsIPresContext* aPresContext,
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nsIContent* aContainer,
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nsIContent* aChild,
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PRInt32 aIndexInParent);
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NS_IMETHOD ContentReplaced(nsIPresShell* aShell,
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nsIPresContext* aPresContext,
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nsIContent* aContainer,
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nsIContent* aOldChild,
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nsIContent* aNewChild,
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PRInt32 aIndexInParent);
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NS_IMETHOD ContentDeleted(nsIPresShell* aShell,
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nsIPresContext* aPresContext,
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nsIContent* aContainer,
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nsIContent* aChild,
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PRInt32 aIndexInParent);
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NS_IMETHOD ContentChanged(nsIPresShell* aShell,
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nsIPresContext* aPresContext,
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nsIContent* aChild,
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nsISupports* aSubContent);
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NS_IMETHOD ListTag(FILE* out = stdout) const;
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protected:
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nsIFrame* mAnchoredItem;
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// Constructor. Takes as arguments the content object and the Frame for
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// the content parent
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nsPlaceholderFrame(nsIContent* aContent, nsIFrame* aParent);
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virtual ~nsPlaceholderFrame();
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};
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#endif /* nsPlaceholderFrame_h___ */
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