зеркало из https://github.com/mozilla/gecko-dev.git
869 строки
37 KiB
C++
869 строки
37 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 nsTableFrame_h__
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#define nsTableFrame_h__
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#include "nscore.h"
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#include "nsVoidArray.h"
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#include "nsHTMLContainerFrame.h"
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#include "nsStyleCoord.h"
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#include "nsStyleConsts.h"
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#include "nsIStyleContext.h"
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#include "nsIFrameReflow.h" // for nsReflowReason enum
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class nsCellMap;
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class nsTableCellFrame;
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class nsTableColFrame;
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class nsTableRowGroupFrame;
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class nsTableRowFrame;
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class nsTableColGroupFrame;
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class nsITableLayoutStrategy;
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class nsHTMLValue;
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class ColumnInfoCache;
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struct InnerTableReflowState;
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struct nsStylePosition;
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struct nsStyleSpacing;
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/**
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* Child list name indices
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* @see #GetAdditionalChildListName()
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*/
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#define NS_TABLE_FRAME_COLGROUP_LIST_INDEX 0
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#define NS_TABLE_FRAME_LAST_LIST_INDEX NS_TABLE_FRAME_COLGROUP_LIST_INDEX
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/* ============================================================================ */
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/** nsTableFrame maps the inner portion of a table (everything except captions.)
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* Used as a pseudo-frame within nsTableOuterFrame, it may also be used
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* stand-alone as the top-level frame.
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*
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* The flowed child list contains row group frames. There is also an additional
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* named child list:
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* - "ColGroup-list" which contains the col group frames
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*
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* @see nsLayoutAtoms::colGroupList
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*
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* TODO: make methods virtual so nsTableFrame can be used as a base class in the future.
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*/
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class nsTableFrame : public nsHTMLContainerFrame
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{
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public:
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/** nsTableOuterFrame has intimate knowledge of the inner table frame */
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friend class nsTableOuterFrame;
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/** instantiate a new instance of nsTableFrame.
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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_NewTableFrame(nsIFrame*& aResult);
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/** sets defaults for table-specific style.
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* @see nsIFrame::Init
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*/
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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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/** @see nsIFrame::DeleteFrame */
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NS_IMETHOD DeleteFrame(nsIPresContext& aPresContext);
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/** helper method for determining if this is a nested table or not */
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PRBool IsNested(const nsHTMLReflowState& aReflowState, const nsStylePosition *& aPosition) const;
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/** helper method to find the table parent of any table frame object */
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// TODO: today, this depends on display types. This should be changed to rely
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// on stronger criteria, like an inner table frame atom
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static NS_METHOD GetTableFrame(nsIFrame *aSourceFrame, nsTableFrame *& aTableFrame);
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/** helper method for getting the width of the table's containing block */
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static nscoord GetTableContainerWidth(const nsHTMLReflowState& aReflowState);
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/** helper method for determining the width specification for a table frame
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* within a specific reflow context.
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*
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* @param aTableFrame the table frame we're inspecting
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* @param aTableStyle the style context for aTableFrame
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* @param aReflowState the context within which we're to determine the table width info
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* @param aSpecifiedTableWidth [OUT] if the table is not auto-width,
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* aSpecifiedTableWidth iw set to the resolved width.
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* @return PR_TRUE if the table is auto-width. value of aSpecifiedTableWidth is undefined.
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* PR_FALSE if the table is not auto-width,
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* and aSpecifiedTableWidth is set to the resolved width in twips.
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*/
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static PRBool TableIsAutoWidth(nsTableFrame * aTableFrame,
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nsIStyleContext * aTableStyle,
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const nsHTMLReflowState& aReflowState,
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nscoord& aSpecifiedTableWidth);
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/** @return PR_TRUE if aDisplayType represents a rowgroup of any sort
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* (header, footer, or body)
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*/
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PRBool IsRowGroup(PRInt32 aDisplayType) const;
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/** Initialize the table frame with a set of children.
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* Calls DidAppendRowGroup which calls nsTableRowFrame::InitChildren
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* which finally calls back into this table frame to build the cell map.
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* Also ensures we have the right number of column frames for the child list.
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*
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* @see nsIFrame::SetInitialChildList
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*/
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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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/** return the first child belonging to the list aListName.
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* @see nsIFrame::FirstChild
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*/
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NS_IMETHOD FirstChild(nsIAtom* aListName, nsIFrame** aFirstChild) const;
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/** @see nsIFrame::GetAdditionalChildListName */
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NS_IMETHOD GetAdditionalChildListName(PRInt32 aIndex,
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nsIAtom** aListName) const;
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/** complete the append of aRowGroupFrame to the table
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* this builds the cell map by calling nsTableRowFrame::InitChildren
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* which calls back into this table frame to build the cell map.
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* @param aRowGroupFrame the row group that was appended.
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* note that this method is optimized for content appended, and doesn't
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* work for random insertion of row groups. Random insertion must go
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* through incremental reflow notifications.
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*/
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NS_IMETHOD DidAppendRowGroup(nsTableRowGroupFrame *aRowGroupFrame);
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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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nsFramePaintLayer aWhichLayer);
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/** inner tables are reflowed in two steps.
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* <pre>
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* if mFirstPassValid is false, this is our first time through since content was last changed
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* set pass to 1
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* do pass 1
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* get min/max info for all cells in an infinite space
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* do column balancing
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* set mFirstPassValid to true
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* do pass 2
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* use column widths to Reflow cells
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* </pre>
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*
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* @see ResizeReflowPass1
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* @see ResizeReflowPass2
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* @see BalanceColumnWidths
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* @see nsIFrameReflow::Reflow
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*/
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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::CreateContinuingFrame */
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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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/** allow the cell and row attributes to effect the column frame
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* currently, the only reason this exists is to support the HTML "rule"
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* that a width attribute on a cell in the first column sets the column width.
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*/
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virtual NS_METHOD SetColumnStyleFromCell(nsIPresContext & aPresContext,
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nsTableCellFrame* aCellFrame,
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nsTableRowFrame * aRowFrame);
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/** the COLS attribute can be modified by any cell's width attribute.
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* deal with it here. Must be called before any call to
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* ColumnInfoCache::AddColumnInfo
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*/
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virtual void AdjustColumnsForCOLSAttribute();
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/** return the column frame corresponding to the given column index
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* there are two ways to do this, depending on whether we have cached
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* column information yet.
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*/
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NS_METHOD GetColumnFrame(PRInt32 aColIndex, nsTableColFrame *&aColFrame);
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/** return PR_TRUE if the column width information has been set */
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PRBool IsColumnWidthsSet();
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/** @see nsIFrame::GetFrameName */
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NS_IMETHOD GetFrameName(nsString& aResult) const;
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/** get the max border thickness for each edge */
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void GetTableBorder(nsMargin &aBorder);
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/** get the border values for the row and column */
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void GetTableBorderAt(nsMargin &aBorder, PRInt32 aRowIndex, PRInt32 aColIndex);
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/** get the max border thickness for each edge encompassed by the row group */
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void GetTableBorderForRowGroup(nsTableRowGroupFrame * aRowGroupFrame, nsMargin &aBorder);
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/** return the width of the column at aColIndex */
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virtual PRInt32 GetColumnWidth(PRInt32 aColIndex);
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/** set the width of the column at aColIndex to aWidth */
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virtual void SetColumnWidth(PRInt32 aColIndex, nscoord aWidth);
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/** helper to get the border collapse style value */
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virtual PRUint8 GetBorderCollapseStyle();
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/** helper to get the cell spacing X style value */
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virtual nscoord GetCellSpacingX();
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/** helper to get the cell spacing Y style value */
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virtual nscoord GetCellSpacingY();
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/** helper to get the cell padding style value */
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virtual nscoord GetCellPadding();
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/** Calculate Layout Information */
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void AppendLayoutData(nsVoidArray* aList, nsTableCellFrame* aTableCell);
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// begin methods for collapsing borders
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/** notification that top and bottom borders have been computed */
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void DidComputeHorizontalCollapsingBorders(nsIPresContext& aPresContext,
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PRInt32 aStartRowIndex,
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PRInt32 aEndRowIndex);
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/** compute the left and right collapsed borders between aStartRowIndex and aEndRowIndex, inclusive */
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void ComputeVerticalCollapsingBorders(nsIPresContext& aPresContext,
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PRInt32 aStartRowIndex,
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PRInt32 aEndRowIndex);
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/** compute the top and bottom collapsed borders between aStartRowIndex and aEndRowIndex, inclusive */
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void ComputeHorizontalCollapsingBorders(nsIPresContext& aPresContext,
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PRInt32 aStartRowIndex,
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PRInt32 aEndRowIndex);
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/** compute the left borders for the table objects intersecting at (aRowIndex, aColIndex) */
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void ComputeLeftBorderForEdgeAt(nsIPresContext& aPresContext,
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PRInt32 aRowIndex,
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PRInt32 aColIndex);
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/** compute the right border for the table cell at (aRowIndex, aColIndex)
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* and the appropriate border for that cell's right neighbor
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* (the left border for a neighboring cell, or the right table edge)
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*/
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void ComputeRightBorderForEdgeAt(nsIPresContext& aPresContext,
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PRInt32 aRowIndex,
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PRInt32 aColIndex);
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/** compute the top borders for the table objects intersecting at (aRowIndex, aColIndex) */
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void ComputeTopBorderForEdgeAt(nsIPresContext& aPresContext,
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PRInt32 aRowIndex,
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PRInt32 aColIndex);
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/** compute the bottom border for the table cell at (aRowIndex, aColIndex)
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* and the appropriate border for that cell's bottom neighbor
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* (the top border for a neighboring cell, or the bottom table edge)
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*/
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void ComputeBottomBorderForEdgeAt(nsIPresContext& aPresContext,
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PRInt32 aRowIndex,
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PRInt32 aColIndex);
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/** at the time we initially compute collapsing borders, we don't yet have the
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* column widths. So we set them as a post-process of the column balancing algorithm.
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*/
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void SetCollapsingBorderHorizontalEdgeLengths();
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/** @return the identifier representing the edge opposite from aEdge (left-right, top-bottom) */
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PRUint8 GetOpposingEdge(PRUint8 aEdge);
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/** @return the computed width for aSide of aBorder */
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nscoord GetWidthForSide(const nsMargin &aBorder, PRUint8 aSide);
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/** returns BORDER_PRECEDENT_LOWER if aStyle1 is lower precedent that aStyle2
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* BORDER_PRECEDENT_HIGHER if aStyle1 is higher precedent that aStyle2
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* BORDER_PRECEDENT_EQUAL if aStyle1 and aStyle2 have the same precedence
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* (note, this is not necessarily the same as saying aStyle1==aStyle2)
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* according to the CSS-2 collapsing borders for tables precedent rules.
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*/
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PRUint8 CompareBorderStyles(PRUint8 aStyle1, PRUint8 aStyle2);
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/** helper to set the length of an edge for aSide border of this table frame */
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void SetBorderEdgeLength(PRUint8 aSide, PRInt32 aIndex, nscoord aLength);
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/** Compute the style, width, and color of an edge in a collapsed-border table.
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* This method is the CSS2 border conflict resolution algorithm
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* The spec says to resolve conflicts in this order:<br>
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* 1. any border with the style HIDDEN wins<br>
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* 2. the widest border with a style that is not NONE wins<br>
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* 3. the border styles are ranked in this order, highest to lowest precedence:<br>
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* double, solid, dashed, dotted, ridge, outset, groove, inset<br>
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* 4. borders that are of equal width and style (differ only in color) have this precedence:<br>
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* cell, row, rowgroup, col, colgroup, table<br>
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* 5. if all border styles are NONE, then that's the computed border style.<br>
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* This method assumes that the styles were added to aStyles in the reverse precedence order
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* of their frame type, so that styles that come later in the list win over style
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* earlier in the list if the tie-breaker gets down to #4.
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* This method sets the out-param aBorder with the resolved border attributes
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*
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* @param aSide the side that is being compared
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* @param aStyles the resolved styles of the table objects intersecting at aSide
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* styles must be added to this list in reverse precedence order
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* @param aBorder [OUT] the border edge that we're computing. Results of the computation
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* are stored in aBorder: style, color, and width.
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* @param aFlipLastSide an indication of what the bordering object is: another cell, or the table itself.
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*/
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void ComputeCollapsedBorderSegment(PRUint8 aSide,
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nsVoidArray * aStyles,
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nsBorderEdge& aBorder,
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PRBool aFlipLastSide);
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// end methods for collapsing borders
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void RecalcLayoutData(nsIPresContext& aPresContext);
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// Get cell margin information
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NS_IMETHOD GetCellMarginData(nsTableCellFrame* aKidFrame, nsMargin& aMargin);
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/** get cached column information for a subset of the columns
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*
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* @param aType -- information is returned for the subset of columns with aType style
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* @param aOutNumColumns -- out param, the number of columns matching aType
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* @param aOutColumnIndexes -- out param, the indexes of the columns matching aType
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*
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* TODO : make aOutColumnIndexes safe
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*/
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void GetColumnsByType(const nsStyleUnit aType,
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PRInt32& aOutNumColumns,
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PRInt32 *& aOutColumnIndexes);
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/** return the row span of a cell, taking into account row span magic at the bottom
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* of a table.
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*
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* @param aRowIndex the row from which to measure effective row span
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* @param aCell the cell
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*
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* @return the row span, correcting for row spans that extend beyond the bottom
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* of the table.
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*/
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virtual PRInt32 GetEffectiveRowSpan(PRInt32 aRowIndex, nsTableCellFrame *aCell);
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/** return the col span of a cell, taking into account col span magic at the edge
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* of a table.
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*
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* @param aColIndex the column from which to measure effective col span
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* @param aCell the cell
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*
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* @return the col span, correcting for col spans that extend beyond the edge
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* of the table.
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*/
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virtual PRInt32 GetEffectiveColSpan(PRInt32 aColIndex, nsTableCellFrame *aCell);
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/** return the value of the COLS attribute, adjusted for the
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* actual number of columns in the table
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*/
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PRInt32 GetEffectiveCOLSAttribute();
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/** return the index of the next row that is not yet assigned.
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* If no row is initialized, 0 is returned.
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*/
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PRInt32 GetNextAvailRowIndex() const;
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/** return the index of the next column in aRowIndex after aColIndex
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* that does not have a cell assigned to it.
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* If aColIndex is past the end of the row, it is returned.
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* If the row is not initialized, 0 is returned.
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*/
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PRInt32 GetNextAvailColIndex(PRInt32 aRowIndex, PRInt32 aColIndex) const;
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/** build as much of the CellMap as possible from the info we have so far
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*/
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virtual void AddCellToTable (nsTableRowFrame *aRowFrame,
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nsTableCellFrame *aCellFrame,
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PRBool aAddRow);
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virtual void AddColumnFrame (nsTableColFrame *aColFrame);
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static PRBool IsFinalPass(const nsReflowState& aReflowState);
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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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nsTableFrame();
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/** destructor, responsible for mColumnLayoutData and mColumnWidths */
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virtual ~nsTableFrame();
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/** implement abstract method on nsHTMLContainerFrame */
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virtual PRIntn GetSkipSides() const;
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/** first pass of ResizeReflow.
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* lays out all table content with aMaxSize(NS_UNCONSTRAINEDSIZE,NS_UNCONSTRAINEDSIZE) and
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* a non-null aMaxElementSize so we get all the metrics we need to do column balancing.
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* Pass 1 only needs to be executed once no matter how many times the table is resized,
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* as long as content and style don't change. This is managed in the member variable mFirstPassIsValid.
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* The layout information for each cell is cached in mColumLayoutData.
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* Incremental layout can take advantage of aStartingFrame to pick up where a previous
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* ResizeReflowPass1 left off.
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*
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* @see nsIFrameReflow::Reflow
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*/
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NS_IMETHOD ResizeReflowPass1(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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nsTableRowGroupFrame * aStartingFrame,
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nsReflowReason aReason,
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PRBool aDoSiblings);
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/** second pass of ResizeReflow.
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* lays out all table content with aMaxSize(computed_table_width, given_table_height)
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* Pass 2 is executed every time the table needs to resize. An optimization is included
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* so that if the table doesn't need to actually be resized, no work is done (see NeedsReflow).
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*
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* @see nsIFrameReflow::Reflow
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*/
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NS_IMETHOD ResizeReflowPass2(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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// begin incremental reflow methods
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/** Incremental Reflow attempts to do column balancing with the minimum number of reflow
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* commands to child elements. This is done by processing the reflow command,
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* rebalancing column widths (if necessary), then comparing the resulting column widths
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* to the prior column widths and reflowing only those cells that require a reflow.
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* All incremental reflows go through this method.
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*
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* @see Reflow
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*/
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NS_IMETHOD IncrementalReflow(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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/** process an incremental reflow command targeted at a child of this frame.
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* @param aNextFrame the next frame in the reflow target chain
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* @see nsIFrameReflow::Reflow
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*/
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NS_IMETHOD IR_TargetIsChild(nsIPresContext& aPresContext,
|
|
nsHTMLReflowMetrics& aDesiredSize,
|
|
InnerTableReflowState& aReflowState,
|
|
nsReflowStatus& aStatus,
|
|
nsIFrame * aNextFrame);
|
|
|
|
/** process an incremental reflow command targeted at this frame.
|
|
* @see nsIFrameReflow::Reflow
|
|
*/
|
|
NS_IMETHOD IR_TargetIsMe(nsIPresContext& aPresContext,
|
|
nsHTMLReflowMetrics& aDesiredSize,
|
|
InnerTableReflowState& aReflowState,
|
|
nsReflowStatus& aStatus);
|
|
|
|
/** process a colgroup inserted notification
|
|
* @param aInsertedFrame the new colgroup frame
|
|
* @param aReplace PR_TRUE if aInsertedFrame is replacing an existing frame
|
|
* Not Yet Implemented.
|
|
* @see nsIFrameReflow::Reflow
|
|
*/
|
|
NS_IMETHOD IR_ColGroupInserted(nsIPresContext& aPresContext,
|
|
nsHTMLReflowMetrics& aDesiredSize,
|
|
InnerTableReflowState& aReflowState,
|
|
nsReflowStatus& aStatus,
|
|
nsTableColGroupFrame * aInsertedFrame,
|
|
PRBool aReplace);
|
|
|
|
/** process a colgroup appended notification. This method is optimized for append.
|
|
* @param aAppendedFrame the new colgroup frame
|
|
* @see nsIFrameReflow::Reflow
|
|
*/
|
|
NS_IMETHOD IR_ColGroupAppended(nsIPresContext& aPresContext,
|
|
nsHTMLReflowMetrics& aDesiredSize,
|
|
InnerTableReflowState& aReflowState,
|
|
nsReflowStatus& aStatus,
|
|
nsTableColGroupFrame * aAppendedFrame);
|
|
|
|
/** process a colgroup removed notification.
|
|
* @param aDeletedFrame the colgroup frame to remove
|
|
* @see nsIFrameReflow::Reflow
|
|
*/
|
|
NS_IMETHOD IR_ColGroupRemoved(nsIPresContext& aPresContext,
|
|
nsHTMLReflowMetrics& aDesiredSize,
|
|
InnerTableReflowState& aReflowState,
|
|
nsReflowStatus& aStatus,
|
|
nsTableColGroupFrame * aDeletedFrame);
|
|
|
|
/** process a rowgroup inserted notification
|
|
* @param aInsertedFrame the new rowgroup frame
|
|
* @param aReplace PR_TRUE if aInsertedFrame is replacing an existing frame
|
|
* Not Yet Implemented.
|
|
* @see nsIFrameReflow::Reflow
|
|
*/
|
|
NS_IMETHOD IR_RowGroupInserted(nsIPresContext& aPresContext,
|
|
nsHTMLReflowMetrics& aDesiredSize,
|
|
InnerTableReflowState& aReflowState,
|
|
nsReflowStatus& aStatus,
|
|
nsTableRowGroupFrame * aInsertedFrame,
|
|
PRBool aReplace);
|
|
|
|
/** process a rowgroup appended notification. This method is optimized for append.
|
|
* @param aAppendedFrame the new rowgroup frame
|
|
* @see nsIFrameReflow::Reflow
|
|
*/
|
|
NS_IMETHOD IR_RowGroupAppended(nsIPresContext& aPresContext,
|
|
nsHTMLReflowMetrics& aDesiredSize,
|
|
InnerTableReflowState& aReflowState,
|
|
nsReflowStatus& aStatus,
|
|
nsTableRowGroupFrame * aAppendedFrame);
|
|
|
|
/** process a rowgroup removed notification.
|
|
* @param aDeletedFrame the rowgroup frame to remove
|
|
* @see nsIFrameReflow::Reflow
|
|
*/
|
|
NS_IMETHOD IR_RowGroupRemoved(nsIPresContext& aPresContext,
|
|
nsHTMLReflowMetrics& aDesiredSize,
|
|
InnerTableReflowState& aReflowState,
|
|
nsReflowStatus& aStatus,
|
|
nsTableRowGroupFrame * aDeletedFrame);
|
|
|
|
/** process a style chnaged notification.
|
|
* @see nsIFrameReflow::Reflow
|
|
* TODO: needs to be optimized for which attribute was actually changed.
|
|
*/
|
|
NS_IMETHOD IR_StyleChanged(nsIPresContext& aPresContext,
|
|
nsHTMLReflowMetrics& aDesiredSize,
|
|
InnerTableReflowState& aReflowState,
|
|
nsReflowStatus& aStatus);
|
|
|
|
NS_IMETHOD AdjustSiblingsAfterReflow(nsIPresContext& aPresContext,
|
|
InnerTableReflowState& aReflowState,
|
|
nsIFrame* aKidFrame,
|
|
nscoord aDeltaY);
|
|
|
|
NS_METHOD AdjustForCollapsingRows(nsIPresContext& aPresContext,
|
|
nscoord& aHeight);
|
|
|
|
NS_METHOD AdjustForCollapsingCols(nsIPresContext& aPresContext,
|
|
nscoord& aWidth);
|
|
// end incremental reflow methods
|
|
|
|
/** return the desired width of this table accounting for the current
|
|
* reflow state, and for the table attributes and parent
|
|
*/
|
|
nscoord ComputeDesiredWidth(const nsHTMLReflowState& aReflowState) const;
|
|
|
|
/** return the desired height of this table accounting for the current
|
|
* reflow state, and for the table attributes and parent
|
|
*/
|
|
nscoord ComputeDesiredHeight(nsIPresContext& aPresContext,
|
|
const nsHTMLReflowState& aReflowState,
|
|
nscoord aDefaultHeight);
|
|
|
|
nscoord GetEffectiveContainerHeight(const nsHTMLReflowState& aReflowState);
|
|
|
|
void PlaceChild(nsIPresContext& aPresContext,
|
|
InnerTableReflowState& aReflowState,
|
|
nsIFrame* aKidFrame,
|
|
const nsRect& aKidRect,
|
|
nsSize* aMaxElementSize,
|
|
nsSize& aKidMaxElementSize);
|
|
|
|
/**
|
|
* Reflow the frames we've already created
|
|
*
|
|
* @param aPresContext presentation context to use
|
|
* @param aReflowState current inline state
|
|
* @return true if we successfully reflowed all the mapped children and false
|
|
* otherwise, e.g. we pushed children to the next in flow
|
|
*/
|
|
NS_IMETHOD ReflowMappedChildren(nsIPresContext& aPresContext,
|
|
nsHTMLReflowMetrics& aDesiredSize,
|
|
InnerTableReflowState& aReflowState,
|
|
nsReflowStatus& aStatus);
|
|
/**
|
|
* Try and pull-up frames from our next-in-flow
|
|
*
|
|
* @param aPresContext presentation context to use
|
|
* @param aReflowState current reflow state
|
|
* @return true if we successfully pulled-up all the children and false
|
|
* otherwise, e.g. child didn't fit
|
|
*/
|
|
NS_IMETHOD PullUpChildren(nsIPresContext& aPresContext,
|
|
nsHTMLReflowMetrics& aDesiredSize,
|
|
InnerTableReflowState& aReflowState,
|
|
nsReflowStatus& aStatus);
|
|
|
|
/** assign widths for each column, taking into account the table content, the effective style,
|
|
* the layout constraints, and the compatibility mode. Sets mColumnWidths as a side effect.
|
|
* @param aPresContext the presentation context
|
|
* @param aTableStyle the resolved style for the table
|
|
* @param aMaxSize the height and width constraints
|
|
* @param aMaxElementSize the min size of the largest indivisible object
|
|
*/
|
|
virtual void BalanceColumnWidths(nsIPresContext& aPresContext,
|
|
const nsHTMLReflowState& aReflowState,
|
|
const nsSize& aMaxSize,
|
|
nsSize* aMaxElementSize);
|
|
|
|
/** sets the width of the table according to the computed widths of each column. */
|
|
virtual void SetTableWidth(nsIPresContext& aPresContext);
|
|
|
|
/** given the new parent size, do I really need to do a reflow? */
|
|
virtual PRBool NeedsReflow(const nsHTMLReflowState& aReflowState,
|
|
const nsSize& aMaxSize);
|
|
|
|
/** returns PR_TRUE if the cached pass 1 data is still valid */
|
|
virtual PRBool IsFirstPassValid() const;
|
|
|
|
/** returns PR_TRUE if the cached column info is still valid */
|
|
virtual PRBool IsColumnCacheValid() const;
|
|
|
|
/** returns PR_TRUE if the cached column info is still valid */
|
|
virtual PRBool IsColumnWidthsValid() const;
|
|
|
|
public:
|
|
virtual void InvalidateFirstPassCache();
|
|
|
|
virtual void InvalidateColumnCache();
|
|
|
|
virtual void InvalidateColumnWidths();
|
|
|
|
protected:
|
|
|
|
/** Support methods for DidSetStyleContext */
|
|
void MapBorderMarginPadding(nsIPresContext& aPresContext);
|
|
void MapHTMLBorderStyle(nsStyleSpacing& aSpacingStyle, nscoord aBorderWidth);
|
|
PRBool ConvertToPixelValue(nsHTMLValue& aValue, PRInt32 aDefault, PRInt32& aResult);
|
|
|
|
/** called whenever the number of columns changes, to increase the storage in mCellMap
|
|
*/
|
|
virtual void GrowCellMap(PRInt32 aColCount);
|
|
|
|
/** returns PR_TRUE if the cached pass 1 data is still valid */
|
|
virtual PRBool IsCellMapValid() const;
|
|
|
|
public:
|
|
/** ResetCellMap is called when the cell structure of the table is changed.
|
|
* Call with caution, only when changing the structure of the table such as
|
|
* inserting or removing rows, changing the rowspan or colspan attribute of a cell, etc.
|
|
*/
|
|
virtual void InvalidateCellMap();
|
|
|
|
protected:
|
|
/** iterates all child frames and creates a new cell map */
|
|
NS_IMETHOD ReBuildCellMap();
|
|
|
|
/** Get the cell map for this table frame. It is not always mCellMap.
|
|
* Only the firstInFlow has a legit cell map
|
|
*/
|
|
virtual nsCellMap *GetCellMap() const;
|
|
|
|
#ifdef NS_DEBUG
|
|
/** for debugging only
|
|
* prints out information about the cell map
|
|
*/
|
|
void DumpCellMap();
|
|
|
|
/** for debugging only
|
|
* prints out info about the table layout state, printing columns and their cells
|
|
*/
|
|
void ListColumnLayoutData(FILE* out, PRInt32 aIndent);
|
|
#endif
|
|
|
|
/** sum the columns represented by all nsTableColGroup objects.
|
|
* if the cell map says there are more columns than this,
|
|
* add extra implicit columns to the content tree.
|
|
*/
|
|
virtual void EnsureColumns (nsIPresContext& aPresContext);
|
|
|
|
/** Set the min col span for every column in the table. Scans the whole table. */
|
|
virtual void SetMinColSpanForTable();
|
|
|
|
virtual void BuildColumnCache(nsIPresContext& aPresContext,
|
|
nsHTMLReflowMetrics& aDesiredSize,
|
|
const nsHTMLReflowState& aReflowState,
|
|
nsReflowStatus& aStatus);
|
|
|
|
virtual void CacheColFramesInCellMap();
|
|
|
|
/** called every time we discover we have a new cell to add to the table.
|
|
* This could be because we got actual cell content, because of rowspan/colspan attributes, etc.
|
|
* This method changes mCellMap as necessary to account for the new cell.
|
|
*
|
|
* @param aCell the content object created for the cell
|
|
* @param aRowIndex the row into which the cell is to be inserted
|
|
* @param aColIndex the col into which the cell is to be inserted
|
|
*/
|
|
virtual void BuildCellIntoMap (nsTableCellFrame *aCell, PRInt32 aRowIndex, PRInt32 aColIndex);
|
|
|
|
/** return the number of columns as specified by the input.
|
|
* has 2 side effects:<br>
|
|
* calls SetStartColumnIndex on each nsTableColumn<br>
|
|
* sets mSpecifiedColCount.<br>
|
|
*/
|
|
virtual PRInt32 GetSpecifiedColumnCount ();
|
|
|
|
/**
|
|
* Return aFrame's child if aFrame is an nsScrollFrame, otherwise return aFrame
|
|
*/
|
|
nsTableRowGroupFrame* GetRowGroupFrameFor(nsIFrame* aFrame, const nsStyleDisplay* aDisplay);
|
|
|
|
public: /* ----- Cell Map public methods ----- */
|
|
|
|
/** returns the number of rows in this table.
|
|
* if mCellMap has been created, it is asked for the number of rows.<br>
|
|
* otherwise, the content is enumerated and the rows are counted.
|
|
*/
|
|
virtual PRInt32 GetRowCount() const;
|
|
|
|
/** returns the number of columns in this table. */
|
|
virtual PRInt32 GetColCount();
|
|
|
|
/** adjust the col count for screwy table attributes.
|
|
* currently just handles excess colspan at end of table
|
|
*/
|
|
virtual void SetEffectiveColCount();
|
|
|
|
/** return the column frame at colIndex.
|
|
* returns nsnull if the col frame has not yet been allocated, or if aColIndex is out of range
|
|
*/
|
|
nsTableColFrame * GetColFrame(PRInt32 aColIndex);
|
|
|
|
/** return the cell frame at aRowIndex, aColIndex.
|
|
* returns nsnull if the cell frame has not yet been allocated,
|
|
* or if aRowIndex or aColIndex is out of range
|
|
*/
|
|
nsTableCellFrame * GetCellFrameAt(PRInt32 aRowIndex, PRInt32 aColIndex);
|
|
|
|
/** returns PR_TRUE if the row at aRowIndex has any cells that are the result
|
|
* of a row-spanning cell above it.
|
|
* @see nsCellMap::RowIsSpannedInto
|
|
*/
|
|
PRBool RowIsSpannedInto(PRInt32 aRowIndex);
|
|
|
|
/** returns PR_TRUE if the row at aRowIndex has any cells that have a rowspan>1
|
|
* that originate in aRowIndex.
|
|
* @see nsCellMap::RowHasSpanningCells
|
|
*/
|
|
PRBool RowHasSpanningCells(PRInt32 aRowIndex);
|
|
|
|
/** returns PR_TRUE if the col at aColIndex has any cells that are the result
|
|
* of a col-spanning cell.
|
|
* @see nsCellMap::ColIsSpannedInto
|
|
*/
|
|
PRBool ColIsSpannedInto(PRInt32 aColIndex);
|
|
|
|
/** returns PR_TRUE if the row at aColIndex has any cells that have a colspan>1
|
|
* @see nsCellMap::ColHasSpanningCells
|
|
*/
|
|
PRBool ColHasSpanningCells(PRInt32 aColIndex);
|
|
|
|
/** return the minimum width of the table caption. Return 0 if there is no caption. */
|
|
nscoord GetMinCaptionWidth();
|
|
|
|
/** return the minimum width of the table. Return 0 if the min width is unknown. */
|
|
nscoord GetMinTableWidth();
|
|
|
|
/** return the maximum width of the table caption. Return 0 if the max width is unknown. */
|
|
nscoord GetMaxTableWidth();
|
|
|
|
/** compute the max-element-size for the table
|
|
* @param aMaxElementSize [OUT] width field set to the min legal width of the table
|
|
*/
|
|
void SetMaxElementSize(nsSize* aMaxElementSize);
|
|
|
|
/** returns PR_TRUE if table layout requires a preliminary pass over the content */
|
|
PRBool RequiresPass1Layout();
|
|
|
|
public:
|
|
static nsIAtom* gColGroupAtom;
|
|
|
|
protected:
|
|
void DebugPrintCount() const; // Debugging routine
|
|
|
|
// data members
|
|
PRInt32 *mColumnWidths; // widths of each column
|
|
PRInt32 mColumnWidthsLength; // the number of column lengths this frame has allocated
|
|
PRBool mColumnWidthsSet; // PR_TRUE if column widths have been set at least once
|
|
PRBool mColumnWidthsValid; // PR_TRUE if column width data is still legit, PR_FALSE if it needs to be recalculated
|
|
PRBool mFirstPassValid; // PR_TRUE if first pass data is still legit, PR_FALSE if it needs to be recalculated
|
|
PRBool mColumnCacheValid; // PR_TRUE if column cache info is still legit, PR_FALSE if it needs to be recalculated
|
|
PRBool mCellMapValid; // PR_TRUE if cell map data is still legit, PR_FALSE if it needs to be recalculated
|
|
PRBool mIsInvariantWidth; // PR_TRUE if table width cannot change
|
|
PRBool mHasScrollableRowGroup; // PR_TRUE if any section has overflow == "auto" or "scroll"
|
|
PRInt32 mColCount; // the number of columns in this table
|
|
PRInt32 mEffectiveColCount; // the number of columns in this table adjusted for weird table attributes
|
|
nsCellMap* mCellMap; // maintains the relationships between rows, cols, and cells
|
|
ColumnInfoCache *mColCache; // cached information about the table columns
|
|
nsITableLayoutStrategy * mTableLayoutStrategy; // the layout strategy for this frame
|
|
nsFrameList mColGroups; // the list of colgroup frames
|
|
nscoord mDefaultCellSpacingX;// the default cell spacing X for this table
|
|
nscoord mDefaultCellSpacingY;// the default cell spacing X for this table
|
|
nscoord mDefaultCellPadding; // the default cell padding for this table
|
|
|
|
nsBorderEdges mBorderEdges; // one list of border segments for each side of the table frame
|
|
// used only for the collapsing border model
|
|
};
|
|
|
|
|
|
inline PRBool nsTableFrame::IsRowGroup(PRInt32 aDisplayType) const
|
|
{
|
|
return PRBool((NS_STYLE_DISPLAY_TABLE_HEADER_GROUP == aDisplayType) ||
|
|
(NS_STYLE_DISPLAY_TABLE_FOOTER_GROUP == aDisplayType) ||
|
|
(NS_STYLE_DISPLAY_TABLE_ROW_GROUP == aDisplayType));
|
|
}
|
|
|
|
#endif
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|