cd4a9a369b
2) many bug fixes 3) box debuging flags git-svn-id: svn://10.0.0.236/trunk@69737 18797224-902f-48f8-a5cc-f745e15eee43
120 lines
4.5 KiB
C++
120 lines
4.5 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
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* License Version 1.1 (the "License"); you may not use this file
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* except in compliance with the License. You may obtain a copy of
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* the License at http://www.mozilla.org/NPL/
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*
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* Software distributed under the License is distributed on an "AS
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* IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
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* implied. See the License for the specific language governing
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* rights and limitations under the License.
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*
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* The Original Code is Mozilla Communicator client code.
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*
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* The Initial Developer of the Original Code is Netscape Communications
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* Corporation. Portions created by Netscape are
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* Copyright (C) 1998 Netscape Communications Corporation. All
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* Rights Reserved.
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*
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* Contributor(s):
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*/
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#ifndef nsScrollPortFrame_h___
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#define nsScrollPortFrame_h___
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#include "nsBoxFrame.h"
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/**
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* The scroll frame creates and manages the scrolling view
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*
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* It only supports having a single child frame that typically is an area
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* frame, but doesn't have to be. The child frame must have a view, though
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*
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* Scroll frames don't support incremental changes, i.e. you can't replace
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* or remove the scrolled frame
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*/
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class nsScrollPortFrame : nsBoxFrame {
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public:
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friend nsresult NS_NewScrollPortFrame(nsIPresShell* aPresShell, nsIFrame** aNewFrame);
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NS_IMETHOD Init(nsIPresContext* aPresContext,
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nsIContent* aContent,
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nsIFrame* aParent,
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nsIStyleContext* aContext,
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nsIFrame* aPrevInFlow);
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// Called to set the one and only child frame. Returns NS_ERROR_INVALID_ARG
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// if the child frame is NULL, and NS_ERROR_UNEXPECTED if the child list
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// contains more than one frame
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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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// Because there can be only one child frame, these two function return
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// NS_ERROR_FAILURE
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NS_IMETHOD AppendFrames(nsIPresContext* aPresContext,
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nsIPresShell& aPresShell,
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nsIAtom* aListName,
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nsIFrame* aFrameList);
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NS_IMETHOD InsertFrames(nsIPresContext* aPresContext,
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nsIPresShell& aPresShell,
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nsIAtom* aListName,
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nsIFrame* aPrevFrame,
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nsIFrame* aFrameList);
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// This function returns NS_ERROR_NOT_IMPLEMENTED
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NS_IMETHOD RemoveFrame(nsIPresContext* aPresContext,
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nsIPresShell& aPresShell,
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nsIAtom* aListName,
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nsIFrame* aOldFrame);
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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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/**
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* Get the "type" of the frame
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*
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* @see nsLayoutAtoms::scrollFrame
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*/
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NS_IMETHOD GetFrameType(nsIAtom** aType) const;
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#ifdef NS_DEBUG
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NS_IMETHOD GetFrameName(nsString& aResult) const;
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#endif
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// nsIBox methods
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NS_DECL_ISUPPORTS
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NS_IMETHOD GetPrefSize(nsBoxLayoutState& aBoxLayoutState, nsSize& aSize);
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NS_IMETHOD GetMinSize(nsBoxLayoutState& aBoxLayoutState, nsSize& aSize);
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NS_IMETHOD GetMaxSize(nsBoxLayoutState& aBoxLayoutState, nsSize& aSize);
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NS_IMETHOD GetAscent(nsBoxLayoutState& aBoxLayoutState, nscoord& aAscent);
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NS_IMETHOD Layout(nsBoxLayoutState& aBoxLayoutState);
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NS_IMETHOD GetPadding(nsMargin& aMargin);
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NS_IMETHOD GetBorder(nsMargin& aMargin);
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NS_IMETHOD GetMargin(nsMargin& aMargin);
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virtual nsresult GetContentOf(nsIContent** aContent);
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protected:
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nsScrollPortFrame(nsIPresShell* aShell);
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virtual PRIntn GetSkipSides() const;
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// Creation of the widget for the scrolling view is factored into a virtual method so
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// that sub-classes may control widget creation.
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virtual nsresult CreateScrollingViewWidget(nsIView* aView,const nsStylePosition* aPosition);
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// Getting the view for scollframe may be overriden to provide a parent view for te scroll frame
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virtual nsresult GetScrollingParentView(nsIPresContext* aPresContext,
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nsIFrame* aParent,
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nsIView** aParentView);
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private:
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nsresult CreateScrollingView(nsIPresContext* aPresContext);
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};
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#endif /* nsScrollPortFrame_h___ */
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