зеркало из https://github.com/mozilla/gecko-dev.git
716 строки
26 KiB
C++
716 строки
26 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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#include "nsTableColGroupFrame.h"
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#include "nsTableColFrame.h"
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#include "nsTableFrame.h"
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#include "nsIHTMLTableColElement.h"
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#include "nsIReflowCommand.h"
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#include "nsIStyleContext.h"
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#include "nsStyleConsts.h"
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#include "nsIPresContext.h"
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#include "nsIHTMLContent.h"
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#include "nsHTMLParts.h"
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#include "nsIPtr.h"
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#include "nsHTMLAtoms.h"
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#include "nsHTMLIIDs.h"
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#include "nsCOMPtr.h"
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NS_DEF_PTR(nsIContent);
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static NS_DEFINE_IID(kIHTMLTableColElementIID, NS_IHTMLTABLECOLELEMENT_IID);
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#ifdef NS_DEBUG
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static PRBool gsDebug = PR_FALSE;
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static PRBool gsDebugIR = PR_FALSE;
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#else
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static const PRBool gsDebug = PR_FALSE;
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static const PRBool gsDebugIR = PR_FALSE;
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#endif
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NS_IMETHODIMP
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nsTableColGroupFrame::InitNewFrames(nsIPresContext& aPresContext, nsIFrame* aChildList)
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{
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nsresult rv=NS_OK;
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nsTableFrame* tableFrame=nsnull;
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rv = nsTableFrame::GetTableFrame(this, tableFrame);
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if ((NS_SUCCEEDED(rv)) && (nsnull!=tableFrame))
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{
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// Process the newly added column frames
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for (nsIFrame* kidFrame = aChildList; nsnull != kidFrame; kidFrame->GetNextSibling(&kidFrame)) {
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// Set the preliminary values for the column frame
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PRInt32 colIndex = mStartColIndex + mColCount;
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((nsTableColFrame *)(kidFrame))->InitColFrame (colIndex);
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PRInt32 repeat = ((nsTableColFrame *)(kidFrame))->GetSpan();
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mColCount += repeat;
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for (PRInt32 i=0; i<repeat; i++)
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{
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tableFrame->AddColumnFrame((nsTableColFrame *)kidFrame);
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}
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}
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// colgroup's span attribute is how many columns the group represents
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// in the absence of any COL children
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// Note that this is the correct, though perhaps unexpected, behavior for the span attribute.
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// The spec says that if there are any COL children, the colgroup's span is ignored.
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if (0==mColCount)
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{
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nsIFrame *firstImplicitColFrame=nsnull;
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nsIFrame *prevColFrame=nsnull;
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nsAutoString colTag;
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nsHTMLAtoms::col->ToString(colTag);
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mColCount = GetSpan();
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for (PRInt32 colIndex=0; colIndex<mColCount; colIndex++)
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{
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nsIHTMLContent *col=nsnull;
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// create an implicit col
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rv = NS_CreateHTMLElement(&col, colTag); // ADDREF: col++
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//XXX mark the col implicit
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mContent->AppendChildTo((nsIContent*)col, PR_FALSE);
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// Create a new col frame
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nsIFrame* colFrame;
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NS_NewTableColFrame(colFrame);
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// Set its style context
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nsCOMPtr<nsIStyleContext> colStyleContext;
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aPresContext.ResolveStyleContextFor(col, mStyleContext,
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PR_TRUE,
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getter_AddRefs(colStyleContext));
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colFrame->Init(aPresContext, col, this, colStyleContext);
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colFrame->SetInitialChildList(aPresContext, nsnull, nsnull);
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// Set nsColFrame-specific information
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PRInt32 absColIndex = mStartColIndex + colIndex;
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((nsTableColFrame *)(colFrame))->InitColFrame (absColIndex);
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((nsTableColFrame *)colFrame)->SetColumnIndex(absColIndex);
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tableFrame->AddColumnFrame((nsTableColFrame *)colFrame);
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//hook into list of children
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if (nsnull==firstImplicitColFrame)
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firstImplicitColFrame = colFrame;
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else
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prevColFrame->SetNextSibling(colFrame);
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prevColFrame = colFrame;
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}
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// hook new columns into col group child list
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mFrames.AppendFrames(nsnull, firstImplicitColFrame);
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}
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SetStyleContextForFirstPass(aPresContext);
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}
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return rv;
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}
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NS_IMETHODIMP
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nsTableColGroupFrame::AppendNewFrames(nsIPresContext& aPresContext, nsIFrame* aChildList)
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{
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if (nsnull!=aChildList)
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mFrames.AppendFrames(nsnull, aChildList);
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return NS_OK;
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}
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NS_IMETHODIMP
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nsTableColGroupFrame::SetInitialChildList(nsIPresContext& aPresContext,
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nsIAtom* aListName,
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nsIFrame* aChildList)
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{
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nsresult result = AppendNewFrames(aPresContext, aChildList);
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if (NS_OK==result)
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result = InitNewFrames(aPresContext, aChildList);
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return result;
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}
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NS_METHOD nsTableColGroupFrame::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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if (gsDebug==PR_TRUE) printf("nsTableColGroupFrame::Paint\n");
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PaintChildren(aPresContext, aRenderingContext, aDirtyRect, aWhichLayer);
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return NS_OK;
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}
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PRIntn
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nsTableColGroupFrame::GetSkipSides() const
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{
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PRIntn skip = 0;
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if (nsnull != mPrevInFlow) {
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skip |= 1 << NS_SIDE_TOP;
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}
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if (nsnull != mNextInFlow) {
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skip |= 1 << NS_SIDE_BOTTOM;
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}
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return skip;
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}
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NS_METHOD nsTableColGroupFrame::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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{
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NS_ASSERTION(nsnull!=mContent, "bad state -- null content for frame");
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nsresult rv=NS_OK;
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// for every content child that (is a column thingy and does not already have a frame)
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// create a frame and adjust it's style
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nsIFrame* kidFrame = nsnull;
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if (eReflowReason_Incremental == aReflowState.reason) {
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rv = IncrementalReflow(aPresContext, aDesiredSize, aReflowState, aStatus);
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}
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for (kidFrame = mFrames.FirstChild(); nsnull != kidFrame;
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kidFrame->GetNextSibling(&kidFrame)) {
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// Give the child frame a chance to reflow, even though we know it'll have 0 size
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nsHTMLReflowMetrics kidSize(nsnull);
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// XXX Use a valid reason...
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nsHTMLReflowState kidReflowState(aPresContext, kidFrame, aReflowState,
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nsSize(0,0), eReflowReason_Initial);
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nsReflowStatus status;
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ReflowChild(kidFrame, aPresContext, kidSize, kidReflowState, status);
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// note that DidReflow is called as the result of some ancestor firing off a DidReflow above me
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kidFrame->SetRect(nsRect(0,0,0,0));
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}
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aDesiredSize.width=0;
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aDesiredSize.height=0;
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aDesiredSize.ascent=aDesiredSize.height;
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aDesiredSize.descent=0;
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if (nsnull!=aDesiredSize.maxElementSize)
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{
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aDesiredSize.maxElementSize->width=0;
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aDesiredSize.maxElementSize->height=0;
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}
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aStatus = NS_FRAME_COMPLETE;
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return rv;
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}
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NS_METHOD nsTableColGroupFrame::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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{
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if (PR_TRUE==gsDebugIR) printf("\nTCGF IR: IncrementalReflow\n");
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nsresult rv = NS_OK;
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// determine if this frame is the target or not
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nsIFrame *target=nsnull;
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rv = aReflowState.reflowCommand->GetTarget(target);
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if ((PR_TRUE==NS_SUCCEEDED(rv)) && (nsnull!=target))
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{
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if (this==target)
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rv = IR_TargetIsMe(aPresContext, aDesiredSize, aReflowState, aStatus);
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else
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{
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// Get the next frame in the reflow chain
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nsIFrame* nextFrame;
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aReflowState.reflowCommand->GetNext(nextFrame);
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rv = IR_TargetIsChild(aPresContext, aDesiredSize, aReflowState, aStatus, nextFrame);
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}
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}
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return rv;
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}
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NS_METHOD nsTableColGroupFrame::IR_TargetIsMe(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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{
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nsresult rv = NS_OK;
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aStatus = NS_FRAME_COMPLETE;
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nsIReflowCommand::ReflowType type;
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aReflowState.reflowCommand->GetType(type);
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nsIFrame *objectFrame;
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aReflowState.reflowCommand->GetChildFrame(objectFrame);
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const nsStyleDisplay *childDisplay=nsnull;
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if (nsnull!=objectFrame)
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objectFrame->GetStyleData(eStyleStruct_Display, ((const nsStyleStruct *&)childDisplay));
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if (PR_TRUE==gsDebugIR) printf("nTCGF IR: IncrementalReflow_TargetIsMe with type=%d\n", type);
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switch (type)
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{
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case nsIReflowCommand::FrameInserted :
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NS_ASSERTION(nsnull!=objectFrame, "bad objectFrame");
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NS_ASSERTION(nsnull!=childDisplay, "bad childDisplay");
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if (NS_STYLE_DISPLAY_TABLE_COLUMN == childDisplay->mDisplay)
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{
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rv = IR_ColInserted(aPresContext, aDesiredSize, aReflowState, aStatus,
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(nsTableColFrame*)objectFrame, PR_FALSE);
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}
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else
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{
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rv = AddFrame(aReflowState, objectFrame);
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}
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break;
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case nsIReflowCommand::FrameAppended :
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NS_ASSERTION(nsnull!=objectFrame, "bad objectFrame");
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NS_ASSERTION(nsnull!=childDisplay, "bad childDisplay");
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if (NS_STYLE_DISPLAY_TABLE_COLUMN_GROUP == childDisplay->mDisplay)
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{
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rv = IR_ColAppended(aPresContext, aDesiredSize, aReflowState, aStatus,
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(nsTableColFrame*)objectFrame);
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}
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else
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{ // no optimization to be done for Unknown frame types, so just reuse the Inserted method
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rv = AddFrame(aReflowState, objectFrame);
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}
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break;
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/*
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case nsIReflowCommand::FrameReplaced :
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*/
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case nsIReflowCommand::FrameRemoved :
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NS_ASSERTION(nsnull!=objectFrame, "bad objectFrame");
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NS_ASSERTION(nsnull!=childDisplay, "bad childDisplay");
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if (NS_STYLE_DISPLAY_TABLE_COLUMN_GROUP == childDisplay->mDisplay)
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{
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rv = IR_ColRemoved(aPresContext, aDesiredSize, aReflowState, aStatus,
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(nsTableColFrame*)objectFrame);
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}
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else
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{
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rv = RemoveAFrame(objectFrame);
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}
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break;
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case nsIReflowCommand::StyleChanged :
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rv = IR_StyleChanged(aPresContext, aDesiredSize, aReflowState, aStatus);
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break;
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case nsIReflowCommand::ContentChanged :
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NS_ASSERTION(PR_FALSE, "illegal reflow type: ContentChanged");
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rv = NS_ERROR_ILLEGAL_VALUE;
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break;
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case nsIReflowCommand::PullupReflow:
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case nsIReflowCommand::PushReflow:
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case nsIReflowCommand::CheckPullupReflow :
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case nsIReflowCommand::UserDefined :
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NS_NOTYETIMPLEMENTED("unimplemented reflow command type");
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rv = NS_ERROR_NOT_IMPLEMENTED;
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if (PR_TRUE==gsDebugIR) printf("TCGF IR: reflow command not implemented.\n");
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break;
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}
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return rv;
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}
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NS_METHOD nsTableColGroupFrame::IR_ColInserted(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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nsTableColFrame * aInsertedFrame,
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PRBool aReplace)
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{
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nsresult rv=NS_OK;
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PRBool adjustStartingColIndex=PR_FALSE;
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rv = AddFrame(aReflowState, (nsIFrame *)aInsertedFrame);
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if (NS_FAILED(rv))
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return rv;
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PRInt32 startingColIndex=mStartColIndex;
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startingColIndex += GetColumnCount(); // has the side effect of resetting all column indexes
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nsIFrame *childFrame=nsnull;
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GetNextSibling(&childFrame);
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while ((NS_SUCCEEDED(rv)) && (nsnull!=childFrame))
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{
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const nsStyleDisplay *display;
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childFrame->GetStyleData(eStyleStruct_Display, (const nsStyleStruct *&)display);
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if (NS_STYLE_DISPLAY_TABLE_COLUMN_GROUP == display->mDisplay)
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{
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startingColIndex += ((nsTableColGroupFrame *)childFrame)->SetStartColumnIndex(startingColIndex);
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}
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rv = childFrame->GetNextSibling(&childFrame);
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}
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nsTableFrame* tableFrame=nsnull;
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rv = nsTableFrame::GetTableFrame(this, tableFrame);
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if ((NS_SUCCEEDED(rv)) && (nsnull!=tableFrame))
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tableFrame->InvalidateColumnCache();
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//XXX: what we want to do here is determine if the new COL information changes anything about layout
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// if not, we can skip rebalancing the columns
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return rv;
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}
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NS_METHOD nsTableColGroupFrame::IR_ColAppended(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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nsTableColFrame * aAppendedFrame)
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{
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nsresult rv=NS_OK;
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PRBool adjustStartingColIndex=PR_FALSE;
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rv = AddFrame(aReflowState, (nsIFrame*)aAppendedFrame);
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if (NS_FAILED(rv))
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return rv;
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PRInt32 startingColIndex=mStartColIndex;
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// this could be optimized
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startingColIndex += GetColumnCount(); // has the side effect of resetting all column indexes
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nsIFrame *childFrame=nsnull;
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GetNextSibling(&childFrame);
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while ((NS_SUCCEEDED(rv)) && (nsnull!=childFrame))
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{
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const nsStyleDisplay *display;
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childFrame->GetStyleData(eStyleStruct_Display, (const nsStyleStruct *&)display);
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if (NS_STYLE_DISPLAY_TABLE_COLUMN_GROUP == display->mDisplay)
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{
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startingColIndex += ((nsTableColGroupFrame *)childFrame)->SetStartColumnIndex(startingColIndex);
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}
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rv = childFrame->GetNextSibling(&childFrame);
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}
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// today we need to rebuild the whole column cache
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// if the table frame is ever recoded to build the column cache incrementally, we could take
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// advantage of that here.
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nsTableFrame* tableFrame=nsnull;
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rv = nsTableFrame::GetTableFrame(this, tableFrame);
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if ((NS_SUCCEEDED(rv)) && (nsnull!=tableFrame))
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tableFrame->InvalidateColumnCache();
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return rv;
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}
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NS_METHOD nsTableColGroupFrame::IR_ColRemoved(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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nsTableColFrame * aDeletedFrame)
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{
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nsresult rv=NS_OK;
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PRInt32 startingColIndex=mStartColIndex;
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nsIFrame *childFrame=mFrames.FirstChild();
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nsIFrame *prevSib=nsnull;
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while ((NS_SUCCEEDED(rv)) && (nsnull!=childFrame))
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{
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// XXX change to use mFrames.DeleteFrame; and why does it keep
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// looping after finding it?
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if (childFrame==aDeletedFrame)
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{
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nsIFrame *deleteFrameNextSib=nsnull;
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aDeletedFrame->GetNextSibling(&deleteFrameNextSib);
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if (nsnull!=prevSib)
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prevSib->SetNextSibling(deleteFrameNextSib);
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else
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mFrames.SetFrames(deleteFrameNextSib);
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startingColIndex += GetColumnCount(); // resets all column indexes
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}
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const nsStyleDisplay *display;
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childFrame->GetStyleData(eStyleStruct_Display, (const nsStyleStruct *&)display);
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if (NS_STYLE_DISPLAY_TABLE_COLUMN_GROUP == display->mDisplay)
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{
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// we've removed aDeletedFrame, now adjust the starting col index of all subsequent col groups
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startingColIndex += ((nsTableColGroupFrame *)childFrame)->SetStartColumnIndex(startingColIndex);
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}
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prevSib=childFrame;
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rv = childFrame->GetNextSibling(&childFrame);
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}
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// today we need to rebuild the whole column cache
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// if the table frame is ever recoded to build the column cache incrementally, we could take
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// advantage of that here.
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nsTableFrame* tableFrame=nsnull;
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rv = nsTableFrame::GetTableFrame(this, tableFrame);
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if ((NS_SUCCEEDED(rv)) && (nsnull!=tableFrame))
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tableFrame->InvalidateColumnCache();
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return rv;
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}
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NS_METHOD nsTableColGroupFrame::IR_StyleChanged(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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{
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if (PR_TRUE==gsDebugIR) printf("TIF IR: IR_StyleChanged for frame %p\n", this);
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nsresult rv = NS_OK;
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// we presume that all the easy optimizations were done in the nsHTMLStyleSheet before we were called here
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// XXX: we can optimize this when we know which style attribute changed
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nsTableFrame* tableFrame=nsnull;
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rv = nsTableFrame::GetTableFrame(this, tableFrame);
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if ((NS_SUCCEEDED(rv)) && (nsnull!=tableFrame))
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{
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tableFrame->InvalidateColumnCache();
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tableFrame->InvalidateFirstPassCache();
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}
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return rv;
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}
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NS_METHOD nsTableColGroupFrame::IR_TargetIsChild(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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nsIFrame * aNextFrame)
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{
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nsresult rv;
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if (PR_TRUE==gsDebugIR) printf("\nTCGF IR: IR_TargetIsChild\n");
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// Remember the old col count
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const PRInt32 oldColCount = GetColumnCount();
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// Pass along the reflow command
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nsHTMLReflowMetrics desiredSize(nsnull);
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nsHTMLReflowState kidReflowState(aPresContext, aNextFrame,
|
|
aReflowState,
|
|
nsSize(aReflowState.availableWidth, aReflowState.availableHeight));
|
|
rv = ReflowChild(aNextFrame, aPresContext, desiredSize, kidReflowState, aStatus);
|
|
if (NS_FAILED(rv))
|
|
return rv;
|
|
|
|
nsTableFrame *tableFrame=nsnull;
|
|
rv = nsTableFrame::GetTableFrame(this, tableFrame);
|
|
if ((NS_SUCCEEDED(rv)) && (nsnull!=tableFrame))
|
|
{
|
|
// compare the new col count to the old col count.
|
|
// If they are the same, we just need to rebalance column widths
|
|
// If they differ, we need to fix up other column groups and the column cache
|
|
const PRInt32 newColCount = GetColumnCount(); // this will set the new column indexes if necessary
|
|
if (oldColCount==newColCount)
|
|
tableFrame->InvalidateColumnWidths();
|
|
else
|
|
tableFrame->InvalidateColumnCache();
|
|
}
|
|
return rv;
|
|
}
|
|
|
|
// Subclass hook for style post processing
|
|
NS_METHOD nsTableColGroupFrame::SetStyleContextForFirstPass(nsIPresContext& aPresContext)
|
|
{
|
|
// get the table frame
|
|
nsTableFrame* tableFrame=nsnull;
|
|
nsresult rv = nsTableFrame::GetTableFrame(this, tableFrame);
|
|
if ((NS_SUCCEEDED(rv)) && (nsnull!=tableFrame))
|
|
{
|
|
// get the style for the table frame
|
|
const nsStyleTable *tableStyle;
|
|
tableFrame->GetStyleData(eStyleStruct_Table, (const nsStyleStruct *&)tableStyle);
|
|
|
|
// if COLS is set, then map it into the COL frames
|
|
if (NS_STYLE_TABLE_COLS_NONE != tableStyle->mCols)
|
|
{
|
|
// set numCols to the number of columns effected by the COLS attribute
|
|
PRInt32 numCols=0;
|
|
if (NS_STYLE_TABLE_COLS_ALL == tableStyle->mCols)
|
|
numCols = mFrames.GetLength();
|
|
else
|
|
numCols = tableStyle->mCols;
|
|
|
|
// for every column effected, set its width style
|
|
PRInt32 colIndex=0;
|
|
nsIFrame *colFrame=mFrames.FirstChild();
|
|
while (nsnull!=colFrame)
|
|
{
|
|
const nsStyleDisplay * colDisplay=nsnull;
|
|
colFrame->GetStyleData(eStyleStruct_Display, ((const nsStyleStruct *&)colDisplay));
|
|
if (NS_STYLE_DISPLAY_TABLE_COLUMN == colDisplay->mDisplay)
|
|
{
|
|
nsCOMPtr<nsIStyleContext> colStyleContext;
|
|
nsStylePosition * colPosition=nsnull;
|
|
colFrame->GetStyleContext(getter_AddRefs(colStyleContext));
|
|
colPosition = (nsStylePosition*)colStyleContext->GetMutableStyleData(eStyleStruct_Position);
|
|
if (colIndex<numCols)
|
|
{
|
|
nsStyleCoord width (1, eStyleUnit_Proportional);
|
|
colPosition->mWidth = width;
|
|
}
|
|
else
|
|
{
|
|
colPosition->mWidth.SetCoordValue(0);
|
|
}
|
|
colStyleContext->RecalcAutomaticData(&aPresContext);
|
|
colIndex++;
|
|
}
|
|
colFrame->GetNextSibling(&colFrame);
|
|
}
|
|
}
|
|
else
|
|
{
|
|
// propagate the colgroup width attribute down to the columns if they have no width of their own
|
|
nsStylePosition* position = (nsStylePosition*)mStyleContext->GetStyleData(eStyleStruct_Position);
|
|
if (eStyleUnit_Null!=position->mWidth.GetUnit())
|
|
{
|
|
// now for every column that doesn't have it's own width, set the width style
|
|
nsIFrame *colFrame=mFrames.FirstChild();
|
|
while (nsnull!=colFrame)
|
|
{
|
|
const nsStyleDisplay * colDisplay=nsnull;
|
|
colFrame->GetStyleData(eStyleStruct_Display, ((const nsStyleStruct *&)colDisplay));
|
|
if (NS_STYLE_DISPLAY_TABLE_COLUMN == colDisplay->mDisplay)
|
|
{
|
|
nsCOMPtr<nsIStyleContext> colStyleContext;
|
|
const nsStylePosition * colPosition=nsnull;
|
|
colFrame->GetStyleData(eStyleStruct_Position, (const nsStyleStruct *&)colPosition); // get a read-only version of the style context
|
|
//XXX: how do I know this is auto because it's defaulted, vs. set explicitly to "auto"?
|
|
if (eStyleUnit_Auto==colPosition->mWidth.GetUnit())
|
|
{
|
|
// notice how we defer getting a mutable style context until we're sure we really need one
|
|
colFrame->GetStyleContext(getter_AddRefs(colStyleContext));
|
|
nsStylePosition * mutableColPosition = (nsStylePosition*)colStyleContext->GetMutableStyleData(eStyleStruct_Position);
|
|
mutableColPosition->mWidth = position->mWidth;
|
|
colStyleContext->RecalcAutomaticData(&aPresContext);
|
|
}
|
|
}
|
|
colFrame->GetNextSibling(&colFrame);
|
|
}
|
|
}
|
|
}
|
|
//mStyleContext->RecalcAutomaticData(&aPresContext);
|
|
}
|
|
return rv;
|
|
}
|
|
|
|
|
|
/** returns the number of columns represented by this group.
|
|
* if there are col children, count them (taking into account the span of each)
|
|
* else, check my own span attribute.
|
|
*/
|
|
int nsTableColGroupFrame::GetColumnCount ()
|
|
{
|
|
mColCount=0;
|
|
nsIFrame *childFrame = mFrames.FirstChild();
|
|
while (nsnull!=childFrame)
|
|
{
|
|
const nsStyleDisplay *childDisplay;
|
|
childFrame->GetStyleData(eStyleStruct_Display, ((const nsStyleStruct *&)childDisplay));
|
|
if (NS_STYLE_DISPLAY_TABLE_COLUMN == childDisplay->mDisplay)
|
|
{
|
|
nsTableColFrame *col = (nsTableColFrame *)childFrame;
|
|
col->SetColumnIndex (mStartColIndex + mColCount);
|
|
mColCount += col->GetSpan();
|
|
}
|
|
childFrame->GetNextSibling(&childFrame);
|
|
}
|
|
if (0==mColCount)
|
|
{ // there were no children of this colgroup that were columns. So use my span attribute
|
|
const nsStyleTable *tableStyle;
|
|
GetStyleData(eStyleStruct_Table, (const nsStyleStruct *&)tableStyle);
|
|
mColCount = tableStyle->mSpan;
|
|
}
|
|
return mColCount;
|
|
}
|
|
|
|
nsTableColFrame * nsTableColGroupFrame::GetFirstColumn()
|
|
{
|
|
return GetNextColumn(nsnull);
|
|
}
|
|
|
|
nsTableColFrame * nsTableColGroupFrame::GetNextColumn(nsIFrame *aChildFrame)
|
|
{
|
|
nsTableColFrame *result = nsnull;
|
|
nsIFrame *childFrame = aChildFrame;
|
|
if (nsnull==childFrame)
|
|
childFrame = mFrames.FirstChild();
|
|
while (nsnull!=childFrame)
|
|
{
|
|
const nsStyleDisplay *childDisplay;
|
|
childFrame->GetStyleData(eStyleStruct_Display, ((const nsStyleStruct *&)childDisplay));
|
|
if (NS_STYLE_DISPLAY_TABLE_COLUMN == childDisplay->mDisplay)
|
|
{
|
|
result = (nsTableColFrame *)childFrame;
|
|
break;
|
|
}
|
|
childFrame->GetNextSibling(&childFrame);
|
|
}
|
|
return result;
|
|
}
|
|
|
|
|
|
nsTableColFrame * nsTableColGroupFrame::GetColumnAt (PRInt32 aColIndex)
|
|
{
|
|
nsTableColFrame *result = nsnull;
|
|
PRInt32 count = 0;
|
|
nsIFrame *childFrame = mFrames.FirstChild();
|
|
|
|
while (nsnull!=childFrame) {
|
|
const nsStyleDisplay *childDisplay;
|
|
childFrame->GetStyleData(eStyleStruct_Display, ((const nsStyleStruct *&)childDisplay));
|
|
if (NS_STYLE_DISPLAY_TABLE_COLUMN == childDisplay->mDisplay) {
|
|
nsTableColFrame *col = (nsTableColFrame *)childFrame;
|
|
count += col->GetSpan();
|
|
if (aColIndex<=count) {
|
|
result = col;
|
|
}
|
|
}
|
|
childFrame->GetNextSibling(&childFrame);
|
|
}
|
|
|
|
return result;
|
|
}
|
|
|
|
PRInt32 nsTableColGroupFrame::GetSpan()
|
|
{
|
|
PRInt32 span=1;
|
|
const nsStyleTable* tableStyle=nsnull;
|
|
GetStyleData(eStyleStruct_Table, (const nsStyleStruct *&)tableStyle);
|
|
if (nsnull!=tableStyle)
|
|
{
|
|
span = tableStyle->mSpan;
|
|
}
|
|
return span;
|
|
}
|
|
|
|
/* this may be needed when IsSynthetic is properly implemented
|
|
PRBool nsTableColGroupFrame::IsManufactured()
|
|
{
|
|
PRBool result = PR_FALSE;
|
|
nsIFrame *firstCol = GetFirstColumn();
|
|
if (nsTableFrame::IsSynthetic(this) &&
|
|
((nsnull==firstCol) || nsTableFrame::IsSynthetic(firstCol)))
|
|
result = PR_TRUE;
|
|
return result;
|
|
}
|
|
*/
|
|
|
|
/** returns colcount because it is frequently used in the context of
|
|
* shuffling relative colgroup order, and it's convenient to not have to
|
|
* call GetColumnCount redundantly.
|
|
*/
|
|
PRInt32 nsTableColGroupFrame::SetStartColumnIndex (int aIndex)
|
|
{
|
|
PRInt32 result = mColCount;
|
|
if (aIndex != mStartColIndex)
|
|
{
|
|
mStartColIndex = aIndex;
|
|
mColCount=0;
|
|
result = GetColumnCount(); // has the side effect of setting each column index based on new start index
|
|
}
|
|
return result;
|
|
}
|
|
|
|
/* ----- global methods ----- */
|
|
|
|
nsresult
|
|
NS_NewTableColGroupFrame(nsIFrame*& aResult)
|
|
{
|
|
nsIFrame* it = new nsTableColGroupFrame;
|
|
if (nsnull == it) {
|
|
return NS_ERROR_OUT_OF_MEMORY;
|
|
}
|
|
aResult = it;
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsTableColGroupFrame::GetFrameName(nsString& aResult) const
|
|
{
|
|
return MakeFrameName("TableColGroup", aResult);
|
|
}
|