зеркало из https://github.com/mozilla/pjs.git
217 строки
8.6 KiB
C++
217 строки
8.6 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 nsTableOuterFrame_h__
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#define nsTableOuterFrame_h__
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#include "nscore.h"
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#include "nsHTMLContainerFrame.h"
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struct OuterTableReflowState;
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struct nsStyleText;
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/**
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* main frame for an nsTable content object,
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* the nsTableOuterFrame contains 0 or one caption frame, and a nsTableFrame
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* psuedo-frame (referred to as the "inner frame').
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* <P> Unlike other frames that handle continuing across breaks, nsTableOuterFrame
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* has no notion of "unmapped" children. All children (caption and inner table)
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* have frames created in Pass 1, so from the layout process' point of view, they
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* are always mapped
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*
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*/
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class nsTableOuterFrame : public nsHTMLContainerFrame
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{
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public:
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/** instantiate a new instance of nsTableOuterFrame.
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* @param aResult the new object is returned in this out-param
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* @param aContent the table object to map
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* @param aParent the parent of the new frame
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*
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* @return NS_OK if the frame was properly allocated, otherwise an error code
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*/
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friend nsresult
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NS_NewTableOuterFrame(nsIContent* aContent,
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nsIFrame* aParentFrame,
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nsIFrame*& aResult);
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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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/** @see nsIFrame::Paint */
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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 Reflow(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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/** @see nsContainerFrame */
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NS_IMETHOD CreateContinuingFrame(nsIPresContext& aPresContext,
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nsIFrame* aParent,
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nsIStyleContext* aStyleContext,
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nsIFrame*& aContinuingFrame);
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NS_IMETHOD GetFrameName(nsString& aResult) const;
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/** return the min width of the caption. Return 0 if there is no caption. */
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nscoord GetMinCaptionWidth();
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NS_IMETHOD List(FILE* out = stdout, PRInt32 aIndent = 0, nsIListFilter *aFilter = nsnull) const;
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protected:
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/** protected constructor
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* @see NewFrame
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*/
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nsTableOuterFrame(nsIContent* aContent, nsIFrame* aParentFrame);
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/** implement abstract method on nsHTMLContainerFrame */
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virtual PRIntn GetSkipSides() const;
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/** return PR_TRUE if the table needs to be reflowed.
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* the outer table needs to be reflowed if the table content has changed,
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* or if the table style attributes or parent max height/width have
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* changed.
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*/
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PRBool NeedsReflow(const nsHTMLReflowState& aReflowState, const nsSize& aMaxSize);
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void PlaceChild(OuterTableReflowState& aReflowState,
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nsIFrame* aKidFrame,
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const nsRect& aKidRect,
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nsSize* aMaxElementSize,
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nsSize& aKidMaxElementSize);
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nscoord GetTableWidth(const nsHTMLReflowState& aReflowState);
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/** overridden here to handle special caption-table relationship
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* @see nsContainerFrame::VerifyTree
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*/
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NS_IMETHOD VerifyTree() const;
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/** overridden here to handle special caption-table relationship
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* @see nsContainerFrame::PrepareContinuingFrame
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*/
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void PrepareContinuingFrame(nsIPresContext& aPresContext,
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nsIFrame* aParent,
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nsIStyleContext* aStyleContext,
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nsTableOuterFrame* aContFrame);
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/**
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* Remove and delete aChild's next-in-flow(s). Updates the sibling and flow
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* pointers.
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*
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* Updates the child count and content offsets of all containers that are
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* affected
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*
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* Overloaded here because nsContainerFrame makes assumptions about pseudo-frames
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* that are not true for tables.
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*
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* @param aChild child this child's next-in-flow
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* @return PR_TRUE if successful and PR_FALSE otherwise
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*/
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PRBool DeleteChildsNextInFlow(nsIPresContext& aPresContext, nsIFrame* aChild);
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// begin Incremental Reflow methods
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NS_IMETHOD RecoverState(OuterTableReflowState& aReflowState, nsIFrame* aKidFrame);
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NS_IMETHOD IncrementalReflow(nsIPresContext& aPresContext,
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nsHTMLReflowMetrics& aDesiredSize,
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OuterTableReflowState& aReflowState,
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nsReflowStatus& aStatus);
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NS_IMETHOD IR_TargetIsChild(nsIPresContext& aPresContext,
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nsHTMLReflowMetrics& aDesiredSize,
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OuterTableReflowState& aReflowState,
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nsReflowStatus& aStatus,
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nsIFrame * aNextFrame);
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NS_IMETHOD IR_TargetIsInnerTableFrame(nsIPresContext& aPresContext,
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nsHTMLReflowMetrics& aDesiredSize,
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OuterTableReflowState& aReflowState,
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nsReflowStatus& aStatus);
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NS_IMETHOD IR_TargetIsCaptionFrame(nsIPresContext& aPresContext,
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nsHTMLReflowMetrics& aDesiredSize,
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OuterTableReflowState& aReflowState,
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nsReflowStatus& aStatus);
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NS_IMETHOD IR_TargetIsMe(nsIPresContext& aPresContext,
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nsHTMLReflowMetrics& aDesiredSize,
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OuterTableReflowState& aReflowState,
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nsReflowStatus& aStatus);
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NS_IMETHOD IR_InnerTableReflow(nsIPresContext& aPresContext,
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nsHTMLReflowMetrics& aDesiredSize,
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OuterTableReflowState& aReflowState,
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nsReflowStatus& aStatus);
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NS_IMETHOD IR_CaptionInserted(nsIPresContext& aPresContext,
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nsHTMLReflowMetrics& aDesiredSize,
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OuterTableReflowState& aReflowState,
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nsReflowStatus& aStatus,
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nsIFrame * aCaptionFrame,
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PRBool aReplace);
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NS_IMETHOD IR_CaptionRemoved(nsIPresContext& aPresContext,
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nsHTMLReflowMetrics& aDesiredSize,
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OuterTableReflowState& aReflowState,
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nsReflowStatus& aStatus);
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PRBool IR_CaptionChangedAxis(const nsStyleText* aOldStyle,
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const nsStyleText* aNewStyle) const;
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NS_IMETHOD SizeAndPlaceChildren(const nsSize & aInnerSize,
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const nsSize & aCaptionSize,
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OuterTableReflowState& aReflowState);
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NS_IMETHOD AdjustSiblingsAfterReflow(nsIPresContext& aPresContext,
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OuterTableReflowState& aReflowState,
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nsIFrame* aKidFrame,
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nscoord aDeltaY);
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// end Incremental Reflow methods
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private:
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/** used to keep track of this frame's children */
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nsIFrame *mInnerTableFrame;
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nsIFrame *mCaptionFrame;
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/** used to track caption max element size */
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PRInt32 mMinCaptionWidth;
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/** used to cache reflow results so we can optimize out reflow in some circumstances */
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nsHTMLReflowMetrics mDesiredSize;
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nsSize mMaxElementSize;
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};
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inline nscoord nsTableOuterFrame::GetMinCaptionWidth()
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{ return mMinCaptionWidth; }
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inline PRIntn nsTableOuterFrame::GetSkipSides() const
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{ return 0; }
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#endif
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