mirror of
https://github.com/mozilla/gecko-dev.git
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781 lines
26 KiB
C++
781 lines
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
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* License Version 1.1 (the "License"); you may not use this file
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* except in compliance with the License. You may obtain a copy of
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* the License at http://www.mozilla.org/NPL/
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*
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* Software distributed under the License is distributed on an "AS
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* IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
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* implied. See the License for the specific language governing
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* rights and limitations under the License.
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*
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* The Original Code is mozilla.org code.
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*
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* The Initial Developer of the Original Code is Netscape
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* Communications Corporation. Portions created by Netscape are
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* Copyright (C) 1998 Netscape Communications Corporation. All
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* Rights Reserved.
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*
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* Contributor(s):
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*/
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#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 "nsIDOMHTMLTableColElement.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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#include "nsCSSRendering.h"
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#include "nsIPresShell.h"
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#include "nsLayoutAtoms.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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static NS_DEFINE_IID(kIDOMHTMLTableColElementIID, NS_IDOMHTMLTABLECOLELEMENT_IID);
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#define COLGROUP_TYPE_CONTENT 0x0
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#define COLGROUP_TYPE_ANONYMOUS_COL 0x1
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#define COLGROUP_TYPE_ANONYMOUS_CELL 0x2
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nsTableColGroupType nsTableColGroupFrame::GetType() const {
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switch(mBits.mType) {
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case COLGROUP_TYPE_ANONYMOUS_COL:
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return eColGroupAnonymousCol;
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case COLGROUP_TYPE_ANONYMOUS_CELL:
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return eColGroupAnonymousCell;
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default:
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return eColGroupContent;
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}
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}
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void nsTableColGroupFrame::SetType(nsTableColGroupType aType) {
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mBits.mType = aType - eColGroupContent;
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}
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void nsTableColGroupFrame::ResetColIndices(nsIPresContext* aPresContext,
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nsIFrame* aFirstColGroup,
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PRInt32 aFirstColIndex,
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nsIFrame* aStartColFrame)
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{
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nsTableColGroupFrame* colGroupFrame = (nsTableColGroupFrame*)aFirstColGroup;
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PRInt32 colIndex = aFirstColIndex;
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while (colGroupFrame) {
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nsIAtom* cgType;
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colGroupFrame->GetFrameType(&cgType);
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if (nsLayoutAtoms::tableColGroupFrame == cgType) {
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colGroupFrame->SetStartColumnIndex(colIndex);
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nsIFrame* colFrame = aStartColFrame;
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if (!colFrame || (colIndex != aFirstColIndex)) {
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colGroupFrame->FirstChild(aPresContext, nsnull, &colFrame);
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}
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while (colFrame) {
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nsIAtom* colType;
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colFrame->GetFrameType(&colType);
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if (nsLayoutAtoms::tableColFrame == colType) {
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((nsTableColFrame*)colFrame)->SetColIndex(colIndex);
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colIndex++;
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}
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NS_IF_RELEASE(colType);
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colFrame->GetNextSibling(&colFrame);
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}
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}
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NS_IF_RELEASE(cgType);
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colGroupFrame->GetNextSibling((nsIFrame**)&colGroupFrame);
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}
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}
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NS_IMETHODIMP
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nsTableColGroupFrame::AddColsToTable(nsIPresContext& aPresContext,
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PRInt32 aFirstColIndex,
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PRBool aResetSubsequentColIndices,
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nsIFrame* aFirstFrame,
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nsIFrame* aLastFrame)
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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) && tableFrame && aFirstFrame)) {
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return rv;
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}
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// set the col indices of the col frames and and add col info to the table
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PRInt32 colIndex = aFirstColIndex;
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nsIFrame* kidFrame = aFirstFrame;
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PRBool foundLastFrame = PR_FALSE;
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while (kidFrame) {
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nsIAtom* kidType;
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kidFrame->GetFrameType(&kidType);
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if (nsLayoutAtoms::tableColFrame == kidType) {
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((nsTableColFrame*)kidFrame)->SetColIndex(colIndex);
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if (!foundLastFrame) {
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tableFrame->InsertCol(aPresContext, (nsTableColFrame &)*kidFrame, colIndex);
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mColCount++;
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}
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colIndex++;
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}
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NS_IF_RELEASE(kidType);
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if (kidFrame == aLastFrame) {
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foundLastFrame = PR_TRUE;
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}
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kidFrame->GetNextSibling(&kidFrame);
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}
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if (aResetSubsequentColIndices) {
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nsIFrame* nextSibling;
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GetNextSibling(&nextSibling);
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if (nextSibling) {
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ResetColIndices(&aPresContext, nextSibling, colIndex);
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}
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}
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return rv;
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}
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// this is called when a col frame doesn't have an explicit col group parent.
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nsTableColGroupFrame*
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nsTableColGroupFrame::FindParentForAppendedCol(nsTableFrame* aTableFrame,
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nsTableColType aColType)
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{
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nsVoidArray& cols = aTableFrame->GetColCache();
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PRInt32 numCols = cols.Count();
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nsIFrame* lastColGroup;
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nsIFrame* lastCol = (nsIFrame*)cols.ElementAt(numCols - 1);
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if (!lastCol) return nsnull; // no columns so no colgroups
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lastCol->GetParent(&lastColGroup);
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if (!lastColGroup) return nsnull; // shouldn't happen
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nsTableColGroupFrame* relevantColGroup = (nsTableColGroupFrame *)lastColGroup;
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nsTableColGroupType relevantColGroupType = relevantColGroup->GetType();
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if (eColGroupAnonymousCell == relevantColGroupType) {
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if (eColAnonymousCell == aColType) {
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return relevantColGroup;
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}
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else {
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// find the next to last col group
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for (PRInt32 colX = numCols - 2; colX >= 0; colX--) {
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nsTableColFrame* colFrame = (nsTableColFrame*)cols.ElementAt(colX);
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nsTableColGroupFrame* colGroupFrame;
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colFrame->GetParent((nsIFrame**)&colGroupFrame);
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nsTableColGroupType cgType = colGroupFrame->GetType();
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if (cgType != relevantColGroupType) {
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relevantColGroup = colGroupFrame;
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relevantColGroupType = cgType;
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break;
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}
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else if (0 == colX) {
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return nsnull;
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}
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}
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}
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}
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if (eColGroupAnonymousCol == relevantColGroupType) {
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if ((eColContent == aColType) || (eColAnonymousCol == aColType)) {
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return relevantColGroup;
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}
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}
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return nsnull;
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}
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PRBool
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nsTableColGroupFrame::GetLastRealColGroup(nsTableFrame* aTableFrame,
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nsIFrame** aLastColGroup)
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{
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*aLastColGroup = nsnull;
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nsFrameList colGroups = aTableFrame->GetColGroups();
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nsIFrame* nextToLastColGroup = nsnull;
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nsIFrame* lastColGroup = colGroups.FirstChild();
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while(lastColGroup) {
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nsIFrame* next;
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lastColGroup->GetNextSibling(&next);
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if (next) {
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nextToLastColGroup = lastColGroup;
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lastColGroup = next;
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}
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else {
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break;
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}
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}
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if (!lastColGroup) return PR_TRUE; // there are no col group frames
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nsTableColGroupType lastColGroupType = ((nsTableColGroupFrame *)lastColGroup)->GetType();
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if (eColGroupAnonymousCell == lastColGroupType) {
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*aLastColGroup = nextToLastColGroup;
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return PR_FALSE;
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}
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else {
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*aLastColGroup = lastColGroup;
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return PR_TRUE;
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}
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}
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// don't set mColCount here, it is done in AddColsToTable
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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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nsTableFrame* tableFrame;
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nsTableFrame::GetTableFrame(this, tableFrame);
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if (!aChildList) {
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nsIFrame* firstChild;
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tableFrame->CreateAnonymousColFrames(*aPresContext, *this, GetSpan(), eColAnonymousColGroup,
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PR_FALSE, nsnull, &firstChild);
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if (firstChild) {
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SetInitialChildList(aPresContext, aListName, firstChild);
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}
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return NS_OK;
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}
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nsIFrame* kidFrame = aChildList;
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while (kidFrame) {
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nsIAtom* kidType;
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kidFrame->GetFrameType(&kidType);
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if (nsLayoutAtoms::tableColFrame == kidType) {
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// Set the preliminary values for the column frame
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PRInt32 span = ((nsTableColFrame*)kidFrame)->GetSpan();
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if (span > 1) {
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nsTableColFrame* firstSpannedCol;
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tableFrame->CreateAnonymousColFrames(*aPresContext, *this, span - 1, eColAnonymousCol,
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PR_FALSE, (nsTableColFrame*)kidFrame, (nsIFrame **)&firstSpannedCol);
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nsIFrame* spanner = kidFrame;
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kidFrame->GetNextSibling(&kidFrame); // need to do this before we insert the new frames
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nsFrameList newChildren(aChildList); // used as a convience to hook up siblings
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newChildren.InsertFrames(this, (nsTableColFrame*)spanner, (nsIFrame *)firstSpannedCol);
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NS_RELEASE(kidType);
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continue;
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}
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}
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NS_IF_RELEASE(kidType);
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kidFrame->GetNextSibling(&kidFrame);
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}
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mFrames.AppendFrames(this, aChildList);
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return NS_OK;
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}
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// Helper function. It marks the table frame as dirty and generates
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// a reflow command
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nsresult
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nsTableColGroupFrame::AddTableDirtyReflowCommand(nsIPresContext* aPresContext,
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nsIPresShell& aPresShell,
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nsIFrame* aTableFrame)
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{
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nsFrameState frameState;
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nsIFrame* tableParentFrame;
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nsIReflowCommand* reflowCmd;
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nsresult rv;
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// Mark the table frame as dirty
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aTableFrame->GetFrameState(&frameState);
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frameState |= NS_FRAME_IS_DIRTY;
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aTableFrame->SetFrameState(frameState);
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// Target the reflow comamnd at its parent frame
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aTableFrame->GetParent(&tableParentFrame);
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rv = NS_NewHTMLReflowCommand(&reflowCmd, tableParentFrame,
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nsIReflowCommand::ReflowDirty);
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if (NS_SUCCEEDED(rv)) {
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// Add the reflow command
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rv = aPresShell.AppendReflowCommand(reflowCmd);
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NS_RELEASE(reflowCmd);
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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::AppendFrames(nsIPresContext* aPresContext,
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nsIPresShell& aPresShell,
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nsIAtom* aListName,
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nsIFrame* aFrameList)
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{
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mFrames.AppendFrames(this, aFrameList);
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InsertColsReflow(*aPresContext, aPresShell, mColCount, aFrameList);
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return NS_OK;
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}
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NS_IMETHODIMP
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nsTableColGroupFrame::InsertFrames(nsIPresContext* aPresContext,
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nsIPresShell& aPresShell,
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nsIAtom* aListName,
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nsIFrame* aPrevFrameIn,
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nsIFrame* aFrameList)
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{
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nsFrameList frames(aFrameList); // convience for getting last frame
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nsIFrame* lastFrame = frames.LastChild();
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mFrames.InsertFrames(this, aPrevFrameIn, aFrameList);
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nsIFrame* prevFrame = nsTableFrame::GetFrameAtOrBefore(aPresContext, this, aPrevFrameIn,
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nsLayoutAtoms::tableColFrame);
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PRInt32 colIndex = (prevFrame) ? ((nsTableColFrame*)prevFrame)->GetColIndex() + 1 : 0;
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InsertColsReflow(*aPresContext, aPresShell, colIndex, aFrameList, lastFrame);
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return NS_OK;
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}
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void
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nsTableColGroupFrame::InsertColsReflow(nsIPresContext& aPresContext,
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nsIPresShell& aPresShell,
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PRInt32 aColIndex,
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nsIFrame* aFirstFrame,
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nsIFrame* aLastFrame)
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{
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AddColsToTable(aPresContext, aColIndex, PR_TRUE, aFirstFrame, aLastFrame);
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nsTableFrame* tableFrame;
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nsTableFrame::GetTableFrame(this, tableFrame);
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tableFrame->InvalidateColumnWidths();
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// Generate a reflow command so we reflow the table
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AddTableDirtyReflowCommand(&aPresContext, aPresShell, tableFrame);
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}
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void
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nsTableColGroupFrame::RemoveChild(nsIPresContext& aPresContext,
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nsTableColFrame& aChild,
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PRBool aResetColIndices)
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{
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PRInt32 colIndex = 0;
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nsIFrame* nextChild = nsnull;
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if (aResetColIndices) {
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colIndex = aChild.GetColIndex();
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aChild.GetNextSibling(&nextChild);
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}
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if (mFrames.DestroyFrame(&aPresContext, (nsIFrame*)&aChild)) {
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mColCount--;
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if (aResetColIndices) {
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ResetColIndices(&aPresContext, this, colIndex, nextChild);
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}
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}
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}
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// this removes children form the last col group (eColGroupAnonymousCell) in the
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// table only,so there is no need to reset col indices for subsequent col groups.
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void
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nsTableColGroupFrame::RemoveChildrenAtEnd(nsIPresContext& aPresContext,
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PRInt32 aNumChildrenToRemove)
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{
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PRInt32 numToRemove = aNumChildrenToRemove;
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if (numToRemove > mColCount) {
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NS_ASSERTION(PR_FALSE, "invalid arg to RemoveChildrenAtEnd");
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numToRemove = mColCount;
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}
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PRInt32 offsetOfFirstRemoval = mColCount - numToRemove;
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PRInt32 offsetX = 0;
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nsIFrame* kidFrame = mFrames.FirstChild();
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while(kidFrame) {
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nsIAtom* kidType;
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kidFrame->GetFrameType(&kidType);
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if (nsLayoutAtoms::tableColFrame == kidType) {
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offsetX++;
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if (offsetX > offsetOfFirstRemoval) {
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nsIFrame* byebye = kidFrame;
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kidFrame->GetNextSibling(&kidFrame);
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mFrames.DestroyFrame(&aPresContext, byebye);
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NS_RELEASE(kidType);
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continue;
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}
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}
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NS_IF_RELEASE(kidType);
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kidFrame->GetNextSibling(&kidFrame);
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}
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}
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NS_IMETHODIMP
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nsTableColGroupFrame::RemoveFrame(nsIPresContext* aPresContext,
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nsIPresShell& aPresShell,
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nsIAtom* aListName,
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nsIFrame* aOldFrame)
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{
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if (!aOldFrame) return NS_OK;
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nsIAtom* frameType = nsnull;
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aOldFrame->GetFrameType(&frameType);
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if (nsLayoutAtoms::tableColFrame == frameType) {
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nsTableColFrame* colFrame = (nsTableColFrame*)aOldFrame;
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PRInt32 colIndex = colFrame->GetColIndex();
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RemoveChild(*aPresContext, *colFrame, PR_TRUE);
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nsTableFrame* tableFrame;
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nsTableFrame::GetTableFrame(this, tableFrame);
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if (tableFrame) {
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tableFrame->RemoveCol(*aPresContext, this, colIndex, PR_TRUE, PR_TRUE);
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}
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tableFrame->InvalidateColumnWidths();
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// Generate a reflow command so we reflow the table
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AddTableDirtyReflowCommand(aPresContext, aPresShell, tableFrame);
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}
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else {
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mFrames.DestroyFrame(aPresContext, aOldFrame);
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}
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NS_IF_RELEASE(frameType);
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return NS_OK;
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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 (NS_FRAME_PAINT_LAYER_BACKGROUND == aWhichLayer) {
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nsCompatibility mode;
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aPresContext->GetCompatibilityMode(&mode);
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if (eCompatibility_Standard == mode) {
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const nsStyleDisplay* disp =
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(const nsStyleDisplay*)mStyleContext->GetStyleData(eStyleStruct_Display);
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if (disp->mVisible) {
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const nsStyleSpacing* spacing =
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(const nsStyleSpacing*)mStyleContext->GetStyleData(eStyleStruct_Spacing);
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const nsStyleColor* color =
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(const nsStyleColor*)mStyleContext->GetStyleData(eStyleStruct_Color);
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nsRect rect(0, 0, mRect.width, mRect.height);
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nsCSSRendering::PaintBackground(aPresContext, aRenderingContext, this,
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aDirtyRect, rect, *color, *spacing, 0, 0);
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}
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}
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}
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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...
|
|
nsHTMLReflowState kidReflowState(aPresContext, aReflowState, kidFrame,
|
|
nsSize(0,0), eReflowReason_Initial);
|
|
|
|
nsReflowStatus status;
|
|
ReflowChild(kidFrame, aPresContext, kidSize, kidReflowState, 0, 0, 0, status);
|
|
FinishReflowChild(kidFrame, aPresContext, kidSize, 0, 0, 0);
|
|
}
|
|
|
|
aDesiredSize.width=0;
|
|
aDesiredSize.height=0;
|
|
aDesiredSize.ascent=aDesiredSize.height;
|
|
aDesiredSize.descent=0;
|
|
if (nsnull!=aDesiredSize.maxElementSize)
|
|
{
|
|
aDesiredSize.maxElementSize->width=0;
|
|
aDesiredSize.maxElementSize->height=0;
|
|
}
|
|
aStatus = NS_FRAME_COMPLETE;
|
|
return rv;
|
|
}
|
|
|
|
NS_METHOD nsTableColGroupFrame::IncrementalReflow(nsIPresContext* aPresContext,
|
|
nsHTMLReflowMetrics& aDesiredSize,
|
|
const nsHTMLReflowState& aReflowState,
|
|
nsReflowStatus& aStatus)
|
|
{
|
|
nsresult rv = NS_OK;
|
|
|
|
// determine if this frame is the target or not
|
|
nsIFrame *target=nsnull;
|
|
rv = aReflowState.reflowCommand->GetTarget(target);
|
|
if ((PR_TRUE==NS_SUCCEEDED(rv)) && (nsnull!=target))
|
|
{
|
|
if (this==target)
|
|
rv = IR_TargetIsMe(aPresContext, aDesiredSize, aReflowState, aStatus);
|
|
else
|
|
{
|
|
// Get the next frame in the reflow chain
|
|
nsIFrame* nextFrame;
|
|
aReflowState.reflowCommand->GetNext(nextFrame);
|
|
rv = IR_TargetIsChild(aPresContext, aDesiredSize, aReflowState, aStatus, nextFrame);
|
|
}
|
|
}
|
|
return rv;
|
|
}
|
|
|
|
NS_METHOD nsTableColGroupFrame::IR_TargetIsMe(nsIPresContext* aPresContext,
|
|
nsHTMLReflowMetrics& aDesiredSize,
|
|
const nsHTMLReflowState& aReflowState,
|
|
nsReflowStatus& aStatus)
|
|
{
|
|
nsresult rv = NS_OK;
|
|
aStatus = NS_FRAME_COMPLETE;
|
|
nsIReflowCommand::ReflowType type;
|
|
aReflowState.reflowCommand->GetType(type);
|
|
nsIFrame *objectFrame;
|
|
aReflowState.reflowCommand->GetChildFrame(objectFrame);
|
|
const nsStyleDisplay *childDisplay=nsnull;
|
|
if (nsnull!=objectFrame)
|
|
objectFrame->GetStyleData(eStyleStruct_Display, ((const nsStyleStruct *&)childDisplay));
|
|
switch (type)
|
|
{
|
|
case nsIReflowCommand::StyleChanged :
|
|
rv = IR_StyleChanged(aPresContext, aDesiredSize, aReflowState, aStatus);
|
|
break;
|
|
|
|
case nsIReflowCommand::ContentChanged :
|
|
NS_ASSERTION(PR_FALSE, "illegal reflow type: ContentChanged");
|
|
rv = NS_ERROR_ILLEGAL_VALUE;
|
|
break;
|
|
|
|
default:
|
|
NS_NOTYETIMPLEMENTED("unexpected reflow command type");
|
|
rv = NS_ERROR_NOT_IMPLEMENTED;
|
|
break;
|
|
}
|
|
|
|
return rv;
|
|
}
|
|
|
|
NS_METHOD nsTableColGroupFrame::IR_StyleChanged(nsIPresContext* aPresContext,
|
|
nsHTMLReflowMetrics& aDesiredSize,
|
|
const nsHTMLReflowState& aReflowState,
|
|
nsReflowStatus& aStatus)
|
|
{
|
|
nsresult rv = NS_OK;
|
|
// we presume that all the easy optimizations were done in the nsHTMLStyleSheet before we were called here
|
|
// XXX: we can optimize this when we know which style attribute changed
|
|
nsTableFrame* tableFrame = nsnull;
|
|
rv = nsTableFrame::GetTableFrame(this, tableFrame);
|
|
if ((NS_SUCCEEDED(rv)) && tableFrame) {
|
|
tableFrame->InvalidateColumnWidths();
|
|
tableFrame->InvalidateFirstPassCache();
|
|
}
|
|
return rv;
|
|
}
|
|
|
|
NS_METHOD nsTableColGroupFrame::IR_TargetIsChild(nsIPresContext* aPresContext,
|
|
nsHTMLReflowMetrics& aDesiredSize,
|
|
const nsHTMLReflowState& aReflowState,
|
|
nsReflowStatus& aStatus,
|
|
nsIFrame * aNextFrame)
|
|
{
|
|
nsresult rv;
|
|
|
|
// Pass along the reflow command
|
|
nsHTMLReflowMetrics desiredSize(nsnull);
|
|
nsHTMLReflowState kidReflowState(aPresContext, aReflowState, aNextFrame,
|
|
nsSize(aReflowState.availableWidth,
|
|
aReflowState.availableHeight));
|
|
rv = ReflowChild(aNextFrame, aPresContext, desiredSize, kidReflowState, 0, 0, 0, aStatus);
|
|
aNextFrame->DidReflow(aPresContext, NS_FRAME_REFLOW_FINISHED);
|
|
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
|
|
tableFrame->InvalidateColumnWidths();
|
|
}
|
|
return rv;
|
|
}
|
|
|
|
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++;
|
|
if (aColIndex<=count) {
|
|
result = col;
|
|
}
|
|
}
|
|
childFrame->GetNextSibling(&childFrame);
|
|
}
|
|
|
|
return result;
|
|
}
|
|
|
|
PRInt32 nsTableColGroupFrame::GetSpan()
|
|
{
|
|
PRInt32 span = 1;
|
|
nsCOMPtr<nsIContent> iContent;
|
|
nsresult rv = GetContent(getter_AddRefs(iContent));
|
|
if (NS_FAILED(rv) || !iContent) return rv;
|
|
|
|
// col group element derives from col element
|
|
nsIDOMHTMLTableColElement* cgContent = nsnull;
|
|
rv = iContent->QueryInterface(kIDOMHTMLTableColElementIID,
|
|
(void **)&cgContent);
|
|
if (cgContent && NS_SUCCEEDED(rv)) {
|
|
cgContent->GetSpan(&span);
|
|
// XXX why does this work!!
|
|
if (span == -1) {
|
|
span = 1;
|
|
}
|
|
NS_RELEASE(cgContent);
|
|
}
|
|
return span;
|
|
}
|
|
|
|
/** 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;
|
|
result = GetColCount();
|
|
}
|
|
return result;
|
|
}
|
|
|
|
|
|
// this could be optimized by using col group frame starting indicies,
|
|
// but typically there aren't enough very large col groups for the added complexity.
|
|
nsTableColGroupFrame*
|
|
nsTableColGroupFrame::GetColGroupFrameContaining(nsIPresContext* aPresContext,
|
|
nsFrameList& aColGroupList,
|
|
nsTableColFrame& aColFrame)
|
|
{
|
|
nsIFrame* childFrame = aColGroupList.FirstChild();
|
|
while (childFrame) {
|
|
nsIAtom* frameType = nsnull;
|
|
childFrame->GetFrameType(&frameType);
|
|
if (nsLayoutAtoms::tableColGroupFrame == frameType) {
|
|
nsTableColFrame* colFrame = nsnull;
|
|
childFrame->FirstChild(aPresContext, nsnull, (nsIFrame **)&colFrame);
|
|
while (colFrame) {
|
|
if (colFrame == &aColFrame) {
|
|
NS_RELEASE(frameType);
|
|
return (nsTableColGroupFrame *)childFrame;
|
|
}
|
|
colFrame->GetNextSibling((nsIFrame **)&colFrame);
|
|
}
|
|
}
|
|
NS_IF_RELEASE(frameType);
|
|
childFrame->GetNextSibling(&childFrame);
|
|
}
|
|
return nsnull;
|
|
}
|
|
|
|
void nsTableColGroupFrame::DeleteColFrame(nsIPresContext* aPresContext, nsTableColFrame* aColFrame)
|
|
{
|
|
mFrames.DestroyFrame(aPresContext, aColFrame);
|
|
}
|
|
|
|
/* ----- global methods ----- */
|
|
|
|
nsresult
|
|
NS_NewTableColGroupFrame(nsIPresShell* aPresShell, nsIFrame** aNewFrame)
|
|
{
|
|
NS_PRECONDITION(aNewFrame, "null OUT ptr");
|
|
if (nsnull == aNewFrame) {
|
|
return NS_ERROR_NULL_POINTER;
|
|
}
|
|
nsTableColGroupFrame* it = new (aPresShell) nsTableColGroupFrame;
|
|
if (nsnull == it) {
|
|
return NS_ERROR_OUT_OF_MEMORY;
|
|
}
|
|
*aNewFrame = it;
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsTableColGroupFrame::GetFrameType(nsIAtom** aType) const
|
|
{
|
|
NS_PRECONDITION(nsnull != aType, "null OUT parameter pointer");
|
|
*aType = nsLayoutAtoms::tableColGroupFrame;
|
|
NS_ADDREF(*aType);
|
|
return NS_OK;
|
|
}
|
|
|
|
#ifdef DEBUG
|
|
NS_IMETHODIMP
|
|
nsTableColGroupFrame::GetFrameName(nsString& aResult) const
|
|
{
|
|
return MakeFrameName("TableColGroup", aResult);
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsTableColGroupFrame::SizeOf(nsISizeOfHandler* aHandler, PRUint32* aResult) const
|
|
{
|
|
if (!aResult) {
|
|
return NS_ERROR_NULL_POINTER;
|
|
}
|
|
PRUint32 sum = sizeof(*this);
|
|
*aResult = sum;
|
|
return NS_OK;
|
|
}
|
|
#endif
|