зеркало из https://github.com/mozilla/gecko-dev.git
100 строки
4.1 KiB
C++
100 строки
4.1 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 nsHTMLContainerFrame_h___
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#define nsHTMLContainerFrame_h___
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#include "nsContainerFrame.h"
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class nsString;
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class nsAbsoluteFrame;
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class nsPlaceholderFrame;
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struct nsStyleDisplay;
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struct nsStylePosition;
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// Base class for html container frames that provides common
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// functionality.
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class nsHTMLContainerFrame : public nsContainerFrame {
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public:
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nsHTMLContainerFrame(nsIContent* aContent,
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nsIFrame* aParent);
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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 HandleEvent(nsIPresContext& aPresContext,
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nsGUIEvent* aEvent,
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nsEventStatus& aEventStatus);
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NS_IMETHOD GetCursorAndContentAt(nsIPresContext& aPresContext,
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const nsPoint& aPoint,
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nsIFrame** aFrame,
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nsIContent** aContent,
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PRInt32& aCursor);
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nsPlaceholderFrame* CreatePlaceholderFrame(nsIPresContext& aPresContext,
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nsIFrame* aFloatedFrame);
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nsAbsoluteFrame* CreateAbsolutePlaceholderFrame(nsIPresContext& aPresContext,
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nsIFrame* aAbsoluteFrame);
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PRBool CreateWrapperFrame(nsIPresContext& aPresContext,
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nsIFrame* aFrame,
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nsIFrame*& aWrapperFrame);
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// If the frame should be floated or absolutely positioned creates a placeholder
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// frame and returns PR_TRUE. The sibling list is modified so aFrame's next
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// sibling pointer is set to nsnull, and aPlaceholderFrame's sibling pointer
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// is set to what aFrame's sibling pointer was. It's up to the caller to adjust
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// any previous sibling pointers.
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PRBool MoveFrameOutOfFlow(nsIPresContext& aPresContext,
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nsIFrame* aFrame,
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const nsStyleDisplay* aDisplay,
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const nsStylePosition* aPosition,
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nsIFrame*& aPlaceholderFrame);
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/* helper methods for incremental reflow */
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/** */
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NS_IMETHOD AddFrame(const nsHTMLReflowState& aReflowState,
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nsIFrame * aAddedFrame);
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/** */
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NS_IMETHOD RemoveFrame(nsIFrame * aRemovedFrame);
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// Helper method to create next-in-flows if necessary
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static nsresult CreateNextInFlow(nsIPresContext& aPresContext,
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nsIFrame* aOuterFrame,
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nsIFrame* aFrame,
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nsIFrame*& aNextInFlowResult);
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// Helper method to wrap views around frames. Used by containers
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// under special circumstances (can be used by leaf frames as well)
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static nsresult CreateViewForFrame(nsIPresContext& aPresContext,
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nsIFrame* aFrame,
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nsIStyleContext* aStyleContext,
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PRBool aForce);
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static void UpdateStyleContexts(nsIPresContext& aPresContext,
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nsIFrame* aFrame,
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nsIFrame* aOldParent,
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nsIFrame* aNewParent);
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protected:
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virtual ~nsHTMLContainerFrame();
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virtual PRIntn GetSkipSides() const = 0;
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};
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#endif /* nsHTMLContainerFrame_h___ */
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