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gecko-dev/editor/base/nsTableEditor.cpp

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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
*
* The contents of this file are subject to the Netscape Public
* License Version 1.1 (the "License"); you may not use this file
* except in compliance with the License. You may obtain a copy of
* the License at http://www.mozilla.org/NPL/
*
* Software distributed under the License is distributed on an "AS
* IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
* implied. See the License for the specific language governing
* rights and limitations under the License.
*
* The Original Code is mozilla.org code.
*
* The Initial Developer of the Original Code is Netscape
* Communications Corporation. Portions created by Netscape are
* Copyright (C) 1998 Netscape Communications Corporation. All
* Rights Reserved.
*
* Contributor(s):
* Pierre Phaneuf <pp@ludusdesign.com>
*/
#include "nsIDOMDocument.h"
#include "nsEditor.h"
#include "nsIDOMText.h"
#include "nsIDOMElement.h"
#include "nsIDOMAttr.h"
#include "nsIDOMNode.h"
#include "nsIDOMNodeList.h"
#include "nsIDOMRange.h"
#include "nsIDOMSelection.h"
#include "nsLayoutCID.h"
#include "nsIContent.h"
#include "nsIContentIterator.h"
#include "nsIAtom.h"
#include "nsIDOMHTMLTableElement.h"
#include "nsIDOMHTMLTableCellElement.h"
#include "nsITableCellLayout.h" // For efficient access to table cell
#include "nsITableLayout.h" // data owned by the table and cell frames
#include "nsHTMLEditor.h"
#include "nsIFrameSelection.h" // For TABLESELECTION_ defines
#include "nsVoidArray.h"
#include "nsEditorUtils.h"
//#define DEBUG_TABLE 1
static NS_DEFINE_CID(kCContentIteratorCID, NS_CONTENTITERATOR_CID);
/***************************************************************************
* stack based helper class for restoring selection after table edit
*/
class nsSetSelectionAfterTableEdit
{
private:
nsCOMPtr<nsITableEditor> mEd;
nsCOMPtr<nsIDOMElement> mTable;
PRInt32 mCol, mRow, mDirection, mSelected;
public:
nsSetSelectionAfterTableEdit(nsITableEditor *aEd, nsIDOMElement* aTable,
PRInt32 aRow, PRInt32 aCol, PRInt32 aDirection,
PRBool aSelected) :
mEd(do_QueryInterface(aEd))
{
mTable = aTable;
mRow = aRow;
mCol = aCol;
mDirection = aDirection;
mSelected = aSelected;
}
~nsSetSelectionAfterTableEdit()
{
if (mEd)
mEd->SetSelectionAfterTableEdit(mTable, mRow, mCol, mDirection, mSelected);
}
// This is needed to abort the caret reset in the destructor
// when one method yields control to another
void CancelSetCaret() {mEd = nsnull; mTable = nsnull;}
};
// Stack-class to turn on/off selection batching for table selection
class nsSelectionBatcher
{
private:
nsCOMPtr<nsIDOMSelection> mSelection;
public:
nsSelectionBatcher(nsIDOMSelection *aSelection) : mSelection(aSelection)
{
if (mSelection) mSelection->StartBatchChanges();
}
virtual ~nsSelectionBatcher()
{
if (mSelection) mSelection->EndBatchChanges();
}
};
// Table Editing helper utilities (not exposed in IDL)
NS_IMETHODIMP
nsHTMLEditor::InsertCell(nsIDOMElement *aCell, PRInt32 aRowSpan, PRInt32 aColSpan,
PRBool aAfter, nsIDOMElement **aNewCell)
{
if (!aCell) return NS_ERROR_NULL_POINTER;
if (aNewCell) *aNewCell = nsnull;
// And the parent and offsets needed to do an insert
nsCOMPtr<nsIDOMNode> cellParent;
nsresult res = aCell->GetParentNode(getter_AddRefs(cellParent));
if (NS_FAILED(res)) return res;
if (!cellParent) return NS_ERROR_NULL_POINTER;
PRInt32 cellOffset;
res = GetChildOffset(aCell, cellParent, cellOffset);
if (NS_FAILED(res)) return res;
nsCOMPtr<nsIDOMElement> newCell;
res = CreateElementWithDefaults(NS_ConvertASCIItoUCS2("td"), getter_AddRefs(newCell));
if(NS_FAILED(res)) return res;
if(!newCell) return NS_ERROR_FAILURE;
//Optional: return new cell created
if (aNewCell)
{
*aNewCell = newCell.get();
NS_ADDREF(*aNewCell);
}
if( aRowSpan > 1)
{
nsAutoString newRowSpan(aRowSpan);
// Note: Do NOT use editor txt for this
newCell->SetAttribute(NS_ConvertASCIItoUCS2("rowspan"), newRowSpan);
}
if( aColSpan > 1)
{
nsAutoString newColSpan(aColSpan);
// Note: Do NOT use editor txt for this
newCell->SetAttribute(NS_ConvertASCIItoUCS2("colspan"), newColSpan);
}
if(aAfter) cellOffset++;
//Don't let Rules System change the selection
nsAutoTxnsConserveSelection dontChangeSelection(this);
return nsEditor::InsertNode(newCell, cellParent, cellOffset);
}
PRBool IsRowNode(nsCOMPtr<nsIDOMNode> &aNode)
{
nsCOMPtr<nsIAtom> atom;
nsCOMPtr<nsIContent> content = do_QueryInterface(aNode);
if (content)
{
content->GetTag(*getter_AddRefs(atom));
if (atom && atom.get() == nsIEditProperty::tr)
return PR_TRUE;
}
return PR_FALSE;
}
NS_IMETHODIMP nsHTMLEditor::SetColSpan(nsIDOMElement *aCell, PRInt32 aColSpan)
{
if (!aCell) return NS_ERROR_NULL_POINTER;
nsAutoString newSpan;
newSpan.AppendInt(aColSpan, 10);
nsAutoString colSpan; colSpan.AssignWithConversion("colspan");
return SetAttribute(aCell, colSpan, newSpan);
}
NS_IMETHODIMP nsHTMLEditor::SetRowSpan(nsIDOMElement *aCell, PRInt32 aRowSpan)
{
if (!aCell) return NS_ERROR_NULL_POINTER;
nsAutoString newSpan;
newSpan.AppendInt(aRowSpan, 10);
nsAutoString rowSpan; rowSpan.AssignWithConversion("rowspan");
return SetAttribute(aCell, rowSpan, newSpan);
}
/****************************************************************/
// Table Editing interface methods
NS_IMETHODIMP
nsHTMLEditor::InsertTableCell(PRInt32 aNumber, PRBool aAfter)
{
nsCOMPtr<nsIDOMElement> table;
nsCOMPtr<nsIDOMElement> curCell;
nsCOMPtr<nsIDOMNode> cellParent;
PRInt32 cellOffset, startRowIndex, startColIndex;
nsresult res = GetCellContext(nsnull,
getter_AddRefs(table),
getter_AddRefs(curCell),
getter_AddRefs(cellParent), &cellOffset,
&startRowIndex, &startColIndex);
if (NS_FAILED(res)) return res;
// Don't fail if no cell found
if (!curCell) return NS_EDITOR_ELEMENT_NOT_FOUND;
// Get more data for current cell in row we are inserting at (we need COLSPAN)
PRInt32 curStartRowIndex, curStartColIndex, rowSpan, colSpan, actualRowSpan, actualColSpan;
PRBool isSelected;
res = GetCellDataAt(table, startRowIndex, startColIndex, *getter_AddRefs(curCell),
curStartRowIndex, curStartColIndex, rowSpan, colSpan,
actualRowSpan, actualColSpan, isSelected);
if (NS_FAILED(res)) return res;
if (!curCell) return NS_ERROR_FAILURE;
PRInt32 newCellIndex = aAfter ? (startColIndex+colSpan) : startColIndex;
//We control selection resetting after the insert...
nsSetSelectionAfterTableEdit setCaret(this, table, startRowIndex, newCellIndex, ePreviousColumn, PR_FALSE);
//...so suppress Rules System selection munging
nsAutoTxnsConserveSelection dontChangeSelection(this);
PRInt32 i;
for (i = 0; i < aNumber; i++)
{
nsCOMPtr<nsIDOMElement> newCell;
res = CreateElementWithDefaults(NS_ConvertASCIItoUCS2("td"), getter_AddRefs(newCell));
if (NS_SUCCEEDED(res) && newCell)
{
if (aAfter) cellOffset++;
res = nsEditor::InsertNode(newCell, cellParent, cellOffset);
if(NS_FAILED(res)) break;
}
}
return res;
}
NS_IMETHODIMP
nsHTMLEditor::GetFirstRow(nsIDOMElement* aTableElement, nsIDOMElement* &aRow)
{
aRow = nsnull;
nsCOMPtr<nsIDOMElement> tableElement;
nsresult res = GetElementOrParentByTagName(NS_ConvertASCIItoUCS2("table"), aTableElement, getter_AddRefs(tableElement));
if (NS_FAILED(res)) return res;
if (!tableElement) return NS_ERROR_NULL_POINTER;
nsCOMPtr<nsIDOMNode>tableNode = do_QueryInterface(tableElement);
if (!tableNode) return NS_ERROR_NULL_POINTER;
nsCOMPtr<nsIDOMNode> tableChild;
res = tableNode->GetFirstChild(getter_AddRefs(tableChild));
if (NS_FAILED(res)) return res;
while (tableChild)
{
nsCOMPtr<nsIContent> content = do_QueryInterface(tableChild);
if (content)
{
nsCOMPtr<nsIDOMElement> element;
nsCOMPtr<nsIAtom> atom;
content->GetTag(*getter_AddRefs(atom));
if (atom.get() == nsIEditProperty::tr)
{
// Found a row directly under <table>
element = do_QueryInterface(tableChild);
if(element)
{
aRow = element.get();
NS_ADDREF(aRow);
}
return NS_OK;
}
// Look for row in one of the row container elements
if (atom.get() == nsIEditProperty::tbody ||
atom.get() == nsIEditProperty::thead ||
atom.get() == nsIEditProperty::tfoot )
{
nsCOMPtr<nsIDOMNode> rowNode;
// All children should be rows
res = tableChild->GetFirstChild(getter_AddRefs(rowNode));
if (NS_FAILED(res)) return res;
if (rowNode && IsRowNode(rowNode))
{
element = do_QueryInterface(rowNode);
if(element)
{
aRow = element.get();
NS_ADDREF(aRow);
}
return NS_OK;
}
}
}
// Here if table child was a CAPTION or COLGROUP
// or child of a row-conainer wasn't a row (bad HTML)
// Look in next table child
res = tableChild->GetNextSibling(getter_AddRefs(tableChild));
};
return res;
}
NS_IMETHODIMP
nsHTMLEditor::GetNextRow(nsIDOMElement* aTableElement, nsIDOMElement* &aRow)
{
aRow = nsnull;
nsCOMPtr<nsIDOMElement> rowElement;
nsresult res = GetElementOrParentByTagName(NS_ConvertASCIItoUCS2("tr"), aTableElement, getter_AddRefs(rowElement));
if (NS_FAILED(res)) return res;
if (!rowElement) return NS_ERROR_NULL_POINTER;
nsCOMPtr<nsIDOMNode> rowNode = do_QueryInterface(rowElement);
if (!rowNode) return NS_ERROR_NULL_POINTER;
nsCOMPtr<nsIDOMNode> nextRow;
nsCOMPtr<nsIDOMNode> rowParent;
nsCOMPtr<nsIDOMNode> parentSibling;
nsCOMPtr<nsIDOMElement> element;
rowNode->GetNextSibling(getter_AddRefs(nextRow));
if(nextRow)
{
element = do_QueryInterface(nextRow);
if(element)
{
aRow = element.get();
NS_ADDREF(aRow);
}
return NS_OK;
}
// No row found, search for rows in other table sections
res = rowNode->GetParentNode(getter_AddRefs(rowParent));
if(NS_FAILED(res)) return res;
if (!rowParent) return NS_ERROR_NULL_POINTER;
res = rowParent->GetNextSibling(getter_AddRefs(parentSibling));
if(NS_FAILED(res)) return res;
while (parentSibling)
{
res = parentSibling->GetFirstChild(getter_AddRefs(nextRow));
if(NS_FAILED(res)) return res;
if (nextRow && IsRowNode(nextRow))
{
element = do_QueryInterface(nextRow);
if(element)
{
aRow = element.get();
NS_ADDREF(aRow);
}
return NS_OK;
}
#ifdef DEBUG_cmanske
printf("GetNextRow: firstChild of row's parent's sibling is not a TR!\n");
#endif
// We arrive here only if a table section has no children
// or first child of section is not a row (bad HTML!)
res = parentSibling->GetNextSibling(getter_AddRefs(parentSibling));
}
return res;
}
NS_IMETHODIMP
nsHTMLEditor::InsertTableColumn(PRInt32 aNumber, PRBool aAfter)
{
nsCOMPtr<nsIDOMSelection> selection;
nsCOMPtr<nsIDOMElement> table;
nsCOMPtr<nsIDOMElement> curCell;
PRInt32 startRowIndex, startColIndex;
nsresult res = GetCellContext(getter_AddRefs(selection),
getter_AddRefs(table),
getter_AddRefs(curCell),
nsnull, nsnull,
&startRowIndex, &startColIndex);
if (NS_FAILED(res)) return res;
// Don't fail if no cell found
if (!curCell) return NS_EDITOR_ELEMENT_NOT_FOUND;
// Get more data for current cell (we need ROWSPAN)
PRInt32 curStartRowIndex, curStartColIndex, rowSpan, colSpan, actualRowSpan, actualColSpan;
PRBool isSelected;
res = GetCellDataAt(table, startRowIndex, startColIndex, *getter_AddRefs(curCell),
curStartRowIndex, curStartColIndex, rowSpan, colSpan,
actualRowSpan, actualColSpan, isSelected);
if (NS_FAILED(res)) return res;
if (!curCell) return NS_ERROR_FAILURE;
nsAutoEditBatch beginBatching(this);
// Use column after current cell if requested
if (aAfter)
{
startColIndex += colSpan;
//Detect when user is adding after a COLSPAN=0 case
// Assume they want to stop the "0" behavior and
// really add a new column. Thus we set the
// colspan to its true value
if (colSpan == 0)
SetColSpan(curCell, actualColSpan);
}
PRInt32 rowCount, colCount, rowIndex;
res = GetTableSize(table, rowCount, colCount);
if (NS_FAILED(res)) return res;
//We reset caret in destructor...
nsSetSelectionAfterTableEdit setCaret(this, table, startRowIndex, startColIndex, ePreviousRow, PR_FALSE);
//.. so suppress Rules System selection munging
nsAutoTxnsConserveSelection dontChangeSelection(this);
nsCOMPtr<nsIDOMElement> rowElement;
for ( rowIndex = 0; rowIndex < rowCount; rowIndex++)
{
if (startColIndex < colCount)
{
// We are inserting before an existing column
res = GetCellDataAt(table, rowIndex, startColIndex, *getter_AddRefs(curCell),
curStartRowIndex, curStartColIndex, rowSpan, colSpan,
actualRowSpan, actualColSpan, isSelected);
if (NS_FAILED(res)) return res;
// Don't fail entire process if we fail to find a cell
// (may fail just in particular rows with < adequate cells per row)
if (curCell)
{
if (curStartColIndex < startColIndex)
{
// We have a cell spanning this location
// Simply increase its colspan to keep table rectangular
// Note: we do nothing if colsSpan=0,
// since it should automatically span the new column
if (colSpan > 0)
SetColSpan(curCell, colSpan+aNumber);
} else {
// Simply set selection to the current cell
// so we can let InsertTableCell() do the work
// Insert a new cell before current one
selection->Collapse(curCell, 0);
res = InsertTableCell(aNumber, PR_FALSE);
}
}
} else {
// We are inserting after all existing columns
//TODO: Make sure table is "well formed" (call NormalizeTable)
// before appending new column
// Get current row and append new cells after last cell in row
if(rowIndex == 0)
res = GetFirstRow(table.get(), *getter_AddRefs(rowElement));
else
res = GetNextRow(rowElement.get(), *getter_AddRefs(rowElement));
if (NS_FAILED(res)) return res;
nsCOMPtr<nsIDOMNode> lastCell;
nsCOMPtr<nsIDOMNode> rowNode = do_QueryInterface(rowElement);
if (!rowElement) return NS_ERROR_FAILURE;
res = rowElement->GetLastChild(getter_AddRefs(lastCell));
if (NS_FAILED(res)) return res;
if (!lastCell) return NS_ERROR_FAILURE;
curCell = do_QueryInterface(lastCell);
if (curCell)
{
// Simply add same number of cells to each row
// Although tempted to check cell indexes for curCell,
// the effects of COLSPAN>1 in some cells makes this futile!
// We must use NormalizeTable first to assure proper
// that there are cells in each cellmap location
selection->Collapse(curCell, 0);
res = InsertTableCell(aNumber, PR_TRUE);
}
}
}
return res;
}
NS_IMETHODIMP
nsHTMLEditor::InsertTableRow(PRInt32 aNumber, PRBool aAfter)
{
nsCOMPtr<nsIDOMSelection> selection;
nsCOMPtr<nsIDOMElement> table;
nsCOMPtr<nsIDOMElement> curCell;
PRInt32 startRowIndex, startColIndex;
nsresult res = GetCellContext(nsnull,
getter_AddRefs(table),
getter_AddRefs(curCell),
nsnull, nsnull,
&startRowIndex, &startColIndex);
if (NS_FAILED(res)) return res;
// Don't fail if no cell found
if (!curCell) return NS_EDITOR_ELEMENT_NOT_FOUND;
// Get more data for current cell in row we are inserting at (we need COLSPAN)
PRInt32 curStartRowIndex, curStartColIndex, rowSpan, colSpan, actualRowSpan, actualColSpan;
PRBool isSelected;
res = GetCellDataAt(table, startRowIndex, startColIndex, *getter_AddRefs(curCell),
curStartRowIndex, curStartColIndex, rowSpan, colSpan,
actualRowSpan, actualColSpan, isSelected);
if (NS_FAILED(res)) return res;
if (!curCell) return NS_ERROR_FAILURE;
nsCOMPtr<nsIDOMElement> parentRow;
res = GetElementOrParentByTagName(NS_ConvertASCIItoUCS2("tr"), curCell, getter_AddRefs(parentRow));
if (NS_FAILED(res)) return res;
if (!parentRow) return NS_ERROR_NULL_POINTER;
PRInt32 rowCount, colCount;
res = GetTableSize(table, rowCount, colCount);
if (NS_FAILED(res)) return res;
// Get the parent and offset where we will insert new row(s)
nsCOMPtr<nsIDOMNode> parentOfRow;
PRInt32 newRowOffset;
parentRow->GetParentNode(getter_AddRefs(parentOfRow));
if (!parentOfRow) return NS_ERROR_NULL_POINTER;
res = GetChildOffset(parentRow, parentOfRow, newRowOffset);
if (NS_FAILED(res)) return res;
if (!parentOfRow) return NS_ERROR_NULL_POINTER;
nsAutoEditBatch beginBatching(this);
if (aAfter)
{
// Use row after current cell
startRowIndex += actualRowSpan;
// offset to use for new row insert
newRowOffset += actualRowSpan;
//Detect when user is adding after a ROWSPAN=0 case
// Assume they want to stop the "0" behavior and
// really add a new row. Thus we set the
// rowspan to its true value
if (rowSpan == 0)
SetRowSpan(curCell, actualRowSpan);
}
//We control selection resetting after the insert...
nsSetSelectionAfterTableEdit setCaret(this, table, startRowIndex, startColIndex, ePreviousColumn, PR_FALSE);
//...so suppress Rules System selection munging
nsAutoTxnsConserveSelection dontChangeSelection(this);
PRInt32 cellsInRow = 0;
if (startRowIndex < rowCount)
{
// We are inserting above an existing row
// Get each cell in the insert row to adjust for COLSPAN effects while we
// count how many cells are needed
PRInt32 colIndex = 0;
// This returns NS_TABLELAYOUT_CELL_NOT_FOUND when we run past end of row,
// which passes the NS_SUCCEEDED macro
while ( NS_OK == GetCellDataAt(table, newRowOffset, colIndex, *getter_AddRefs(curCell),
curStartRowIndex, curStartColIndex, rowSpan, colSpan,
actualRowSpan, actualColSpan, isSelected) )
{
if (curCell)
{
if (curStartRowIndex < startRowIndex)
{
// We have a cell spanning this location
// Simply increase its rowspan
//Note that if rowSpan == 0, we do nothing,
// since that cell should automatically extend into the new row
if (rowSpan > 0)
SetRowSpan(curCell, rowSpan+aNumber);
} else {
// Count the number of cells we need to add to the new row
cellsInRow += actualColSpan;
}
// Next cell in row
colIndex += actualColSpan;
}
else
colIndex++;
}
} else {
// We are adding a new row after all others
// If it weren't for colspan=0 effect,
// we could simply use colCount for number of new cells...
cellsInRow = colCount;
// ...but we must compensate for all cells with rowSpan = 0 in the last row
PRInt32 lastRow = rowCount-1;
PRInt32 tempColIndex = 0;
while ( NS_OK == GetCellDataAt(table, lastRow, tempColIndex, *getter_AddRefs(curCell),
curStartRowIndex, curStartColIndex, rowSpan, colSpan,
actualRowSpan, actualColSpan, isSelected) )
{
if (rowSpan == 0)
cellsInRow -= actualColSpan;
tempColIndex += actualColSpan;
}
}
if (cellsInRow > 0)
{
for (PRInt32 row = 0; row < aNumber; row++)
{
// Create a new row
nsCOMPtr<nsIDOMElement> newRow;
res = CreateElementWithDefaults(NS_ConvertASCIItoUCS2("tr"), getter_AddRefs(newRow));
if (NS_SUCCEEDED(res))
{
if (!newRow) return NS_ERROR_FAILURE;
for (PRInt32 i = 0; i < cellsInRow; i++)
{
nsCOMPtr<nsIDOMElement> newCell;
res = CreateElementWithDefaults(NS_ConvertASCIItoUCS2("td"), getter_AddRefs(newCell));
if (NS_FAILED(res)) return res;
if (!newCell) return NS_ERROR_FAILURE;
// Don't use transaction system yet! (not until entire row is inserted)
nsCOMPtr<nsIDOMNode>resultNode;
res = newRow->AppendChild(newCell, getter_AddRefs(resultNode));
if (NS_FAILED(res)) return res;
}
// Use transaction system to insert the entire row+cells
// (Note that rows are inserted at same childoffset each time)
res = nsEditor::InsertNode(newRow, parentOfRow, newRowOffset);
if (NS_FAILED(res)) return res;
}
}
}
return res;
}
// Editor helper only
NS_IMETHODIMP
nsHTMLEditor::DeleteTable2(nsCOMPtr<nsIDOMElement> &aTable, nsCOMPtr<nsIDOMSelection> &aSelection)
{
nsCOMPtr<nsIDOMNode> tableParent;
PRInt32 tableOffset;
if(NS_FAILED(aTable->GetParentNode(getter_AddRefs(tableParent))) || !tableParent)
return NS_ERROR_FAILURE;
// Save offset we need to restore the selection
if(NS_FAILED(GetChildOffset(aTable, tableParent, tableOffset)))
return NS_ERROR_FAILURE;
nsresult res = DeleteNode(aTable);
// Place selection just before the table
aSelection->Collapse(tableParent, tableOffset);
return res;
}
NS_IMETHODIMP
nsHTMLEditor::DeleteTable()
{
nsCOMPtr<nsIDOMSelection> selection;
nsCOMPtr<nsIDOMElement> table;
nsresult res = GetCellContext(getter_AddRefs(selection),
getter_AddRefs(table),
nsnull, nsnull, nsnull, nsnull, nsnull);
if (NS_SUCCEEDED(res))
{
nsAutoEditBatch beginBatching(this);
res = DeleteTable2(table, selection);
}
return res;
}
NS_IMETHODIMP
nsHTMLEditor::DeleteTableCell(PRInt32 aNumber)
{
nsCOMPtr<nsIDOMSelection> selection;
nsCOMPtr<nsIDOMElement> table;
nsCOMPtr<nsIDOMElement> cell;
PRInt32 startRowIndex, startColIndex;
nsresult res = nsEditor::GetSelection(getter_AddRefs(selection));
if (NS_FAILED(res)) return res;
if (!selection) return NS_ERROR_FAILURE;
nsAutoEditBatch beginBatching(this);
for (PRInt32 i = 0; i < aNumber; i++)
{
res = GetCellContext(getter_AddRefs(selection),
getter_AddRefs(table),
getter_AddRefs(cell),
nsnull, nsnull,
&startRowIndex, &startColIndex);
if (NS_FAILED(res)) return res;
// Don't fail if no cell found
if (!cell) return NS_EDITOR_ELEMENT_NOT_FOUND;
if (1 == GetNumberOfCellsInRow(table, startRowIndex))
{
nsCOMPtr<nsIDOMElement> parentRow;
res = GetElementOrParentByTagName(NS_ConvertASCIItoUCS2("tr"), cell, getter_AddRefs(parentRow));
if (NS_FAILED(res)) return res;
if (!parentRow) return NS_ERROR_NULL_POINTER;
// We should delete the row instead,
// but first check if its the only row left
// so we can delete the entire table
PRInt32 rowCount, colCount;
res = GetTableSize(table, rowCount, colCount);
if (NS_FAILED(res)) return res;
if (rowCount == 1)
return DeleteTable2(table, selection);
// We need to call DeleteTableRow to handle cells with rowspan
res = DeleteTableRow(1);
if (NS_FAILED(res)) return res;
}
else
{
// More than 1 cell in the row
// We clear the selection to avoid problems when nodes in the selection are deleted,
// The setCaret object will call SetSelectionAfterTableEdit in it's destructor
selection->ClearSelection();
nsSetSelectionAfterTableEdit setCaret(this, table, startRowIndex, startColIndex, ePreviousColumn, PR_FALSE);
nsAutoTxnsConserveSelection dontChangeSelection(this);
res = DeleteNode(cell);
// If we fail, don't try to delete any more cells???
if (NS_FAILED(res)) return res;
}
}
return res;
}
NS_IMETHODIMP
nsHTMLEditor::DeleteTableCellContents()
{
nsCOMPtr<nsIDOMSelection> selection;
nsCOMPtr<nsIDOMElement> table;
nsCOMPtr<nsIDOMElement> cell;
PRInt32 startRowIndex, startColIndex;
nsresult res = NS_OK;
res = GetCellContext(getter_AddRefs(selection),
getter_AddRefs(table),
getter_AddRefs(cell),
nsnull, nsnull,
&startRowIndex, &startColIndex);
if (NS_FAILED(res)) return res;
// Don't fail if no cell found
if (!cell) return NS_EDITOR_ELEMENT_NOT_FOUND;
// We clear the selection to avoid problems when nodes in the selection are deleted,
selection->ClearSelection();
nsSetSelectionAfterTableEdit setCaret(this, table, startRowIndex, startColIndex, ePreviousColumn, PR_FALSE);
//Don't let Rules System change the selection
nsAutoTxnsConserveSelection dontChangeSelection(this);
nsAutoEditBatch beginBatching(this);
nsCOMPtr<nsIDOMNodeList> nodeList;
res = cell->GetChildNodes(getter_AddRefs(nodeList));
if (NS_FAILED(res)) return res;
if (!nodeList) return NS_ERROR_FAILURE;
PRUint32 nodeListLength;
res = nodeList->GetLength(&nodeListLength);
if (NS_FAILED(res)) return res;
for (PRUint32 i = 0; i < nodeListLength; i++)
{
nsCOMPtr<nsIDOMNode> child;
res = cell->GetLastChild(getter_AddRefs(child));
if (NS_FAILED(res)) return res;
res = DeleteNode(child);
if (NS_FAILED(res)) return res;
}
return res;
}
NS_IMETHODIMP
nsHTMLEditor::DeleteTableColumn(PRInt32 aNumber)
{
nsCOMPtr<nsIDOMSelection> selection;
nsCOMPtr<nsIDOMElement> table;
nsCOMPtr<nsIDOMElement> cell;
PRInt32 startRowIndex, startColIndex;
PRInt32 rowCount, colCount;
nsresult res = NS_OK;
res = GetCellContext(getter_AddRefs(selection),
getter_AddRefs(table),
getter_AddRefs(cell),
nsnull, nsnull,
&startRowIndex, &startColIndex);
if (NS_FAILED(res)) return res;
// Don't fail if no cell found
if (!cell) return NS_EDITOR_ELEMENT_NOT_FOUND;
res = GetTableSize(table, rowCount, colCount);
if (NS_FAILED(res)) return res;
// Shortcut the case of deleting all columns in table
if(startColIndex == 0 && aNumber >= colCount)
return DeleteTable2(table, selection);
nsAutoEditBatch beginBatching(this);
// Check for counts too high
aNumber = PR_MIN(aNumber,(colCount-startColIndex));
// Scan through cells in row to do rowspan adjustments
nsCOMPtr<nsIDOMElement> curCell;
PRInt32 curStartRowIndex, curStartColIndex, rowSpan, colSpan, actualRowSpan, actualColSpan;
PRBool isSelected;
PRInt32 rowIndex = 0;
for (PRInt32 i = 0; i < aNumber; i++)
{
do {
res = GetCellDataAt(table, rowIndex, startColIndex, *getter_AddRefs(curCell),
curStartRowIndex, curStartColIndex, rowSpan, colSpan,
actualRowSpan, actualColSpan, isSelected);
if (NS_FAILED(res)) return res;
if (curCell)
{
// This must always be >= 1
NS_ASSERTION((actualRowSpan > 0),"Actual ROWSPAN = 0 in DeleteTableColumn");
// Find cells that don't start in column we are deleting
if (curStartColIndex < startColIndex || colSpan > 1 || colSpan == 0)
{
// We have a cell spanning this location
// Decrease its colspan to keep table rectangular,
// but if colSpan=0, it will adjust automatically
if (colSpan > 0)
{
NS_ASSERTION((colSpan > 1),"Bad COLSPAN in DeleteTableColumn");
SetColSpan(curCell,colSpan-1);
}
if (curStartColIndex == startColIndex)
{
// Cell is in column to be deleted,
// but delete contents of cell instead of cell itself
selection->Collapse(curCell,0);
DeleteTableCellContents();
}
// To next cell in column
rowIndex += actualRowSpan;
} else {
// Delete the cell
if (1 == GetNumberOfCellsInRow(table, rowIndex))
{
// Only 1 cell in row - delete the row
nsCOMPtr<nsIDOMElement> parentRow;
res = GetElementOrParentByTagName(NS_ConvertASCIItoUCS2("tr"), cell, getter_AddRefs(parentRow));
if (NS_FAILED(res)) return res;
if(!parentRow) return NS_ERROR_NULL_POINTER;
// But first check if its the only row left
// so we can delete the entire table
// (This should never happen but it's the safe thing to do)
PRInt32 rowCount, colCount;
res = GetTableSize(table, rowCount, colCount);
if (NS_FAILED(res)) return res;
if (rowCount == 1)
return DeleteTable2(table, selection);
// Delete the row by placing caret in cell we were to delete
// We need to call DeleteTableRow to handle cells with rowspan
selection->Collapse(cell,0);
res = DeleteTableRow(1);
if (NS_FAILED(res)) return res;
// Note that we don't incremenet rowIndex
// since a row was deleted and "next"
// row now has current rowIndex
} else {
selection->ClearSelection();
nsSetSelectionAfterTableEdit setCaret(this, table, curStartRowIndex, curStartColIndex,
ePreviousColumn, PR_FALSE);
//Don't let Rules System change the selection
nsAutoTxnsConserveSelection dontChangeSelection(this);
res = DeleteNode(curCell);
if (NS_FAILED(res)) return res;
//Skipover any rows spanned by this cell
rowIndex += actualRowSpan;
}
}
}
} while (curCell);
}
return res;
}
NS_IMETHODIMP
nsHTMLEditor::DeleteTableRow(PRInt32 aNumber)
{
nsCOMPtr<nsIDOMSelection> selection;
nsCOMPtr<nsIDOMElement> table;
nsCOMPtr<nsIDOMElement> cell;
PRInt32 startRowIndex, startColIndex;
PRInt32 rowCount, colCount;
nsresult res = NS_OK;
res = GetCellContext(getter_AddRefs(selection),
getter_AddRefs(table),
getter_AddRefs(cell),
nsnull, nsnull,
&startRowIndex, &startColIndex);
if (NS_FAILED(res)) return res;
// Don't fail if no cell found
if (!cell) return NS_EDITOR_ELEMENT_NOT_FOUND;
res = GetTableSize(table, rowCount, colCount);
if (NS_FAILED(res)) return res;
// Shortcut the case of deleting all rows in table
if(startRowIndex == 0 && aNumber >= rowCount)
return DeleteTable2(table, selection);
nsAutoEditBatch beginBatching(this);
//We control selection resetting after the insert...
nsSetSelectionAfterTableEdit setCaret(this, table, startRowIndex, startColIndex, ePreviousRow, PR_FALSE);
// Check for counts too high
aNumber = PR_MIN(aNumber,(rowCount-startRowIndex));
// We clear the selection to avoid problems when nodes in the selection are deleted,
// Be sure to set it correctly later (in SetSelectionAfterTableEdit)!
selection->ClearSelection();
// Scan through cells in row to do rowspan adjustments
nsCOMPtr<nsIDOMElement> curCell;
PRInt32 curStartRowIndex, curStartColIndex, rowSpan, colSpan, actualRowSpan, actualColSpan;
PRBool isSelected;
PRInt32 colIndex = 0;
do {
res = GetCellDataAt(table, startRowIndex, colIndex, *getter_AddRefs(curCell),
curStartRowIndex, curStartColIndex, rowSpan, colSpan,
actualRowSpan, actualColSpan, isSelected);
// We don't fail if we don't find a cell, so this must be real bad
if(NS_FAILED(res)) return res;
// Find cells that don't start in row we are deleting
if (curCell)
{
//Real colspan must always be >= 1
NS_ASSERTION((actualColSpan > 0),"Effective COLSPAN = 0 in DeleteTableRow");
if (curStartRowIndex < startRowIndex)
{
// We have a cell spanning this location
// Decrease its rowspan to keep table rectangular
// but we don't need to do this if rowspan=0,
// since it will automatically adjust
if (rowSpan > 0)
SetRowSpan(curCell, PR_MAX((startRowIndex - curStartRowIndex), actualRowSpan - aNumber));
}
// Skip over locations spanned by this cell
colIndex += actualColSpan;
}
} while (curCell);
for (PRInt32 i = 0; i < aNumber; i++)
{
//TODO: To minimize effect of deleting cells that have rowspan > 1:
// Scan for rowspan > 1 and insert extra emtpy cells in
// appropriate rows to take place of spanned regions.
// (Hard part is finding appropriate neighbor cell before/after in correct row)
// Delete the row
nsCOMPtr<nsIDOMElement> parentRow;
res = GetElementOrParentByTagName(NS_ConvertASCIItoUCS2("tr"), cell, getter_AddRefs(parentRow));
if (NS_SUCCEEDED(res) && parentRow)
res = DeleteNode(parentRow);
if (NS_FAILED(res))
startRowIndex++;
res = GetCellAt(table, startRowIndex, startColIndex, *getter_AddRefs(cell));
if(!cell)
break;
}
return res;
}
NS_IMETHODIMP
nsHTMLEditor::SelectTable()
{
nsCOMPtr<nsIDOMElement> table;
nsresult res = NS_ERROR_FAILURE;
res = GetElementOrParentByTagName(NS_ConvertASCIItoUCS2("table"), nsnull, getter_AddRefs(table));
if (NS_FAILED(res)) return res;
// Don't fail if we didn't find a table
if (!table) return NS_OK;
nsCOMPtr<nsIDOMNode> tableNode = do_QueryInterface(table);
if (tableNode)
{
res = ClearSelection();
if (NS_SUCCEEDED(res))
res = AppendNodeToSelectionAsRange(table);
}
return res;
}
NS_IMETHODIMP
nsHTMLEditor::SelectTableCell()
{
nsCOMPtr<nsIDOMElement> cell;
nsresult res = GetElementOrParentByTagName(NS_ConvertASCIItoUCS2("td"), nsnull, getter_AddRefs(cell));
if (NS_FAILED(res)) return res;
// Don't fail if we didn't find a table
if (!cell) return NS_EDITOR_ELEMENT_NOT_FOUND;
nsCOMPtr<nsIDOMNode> cellNode = do_QueryInterface(cell);
if (cellNode)
{
res = ClearSelection();
if (NS_SUCCEEDED(res))
res = AppendNodeToSelectionAsRange(cellNode);
}
return res;
}
NS_IMETHODIMP
nsHTMLEditor::SelectBlockOfCells(nsIDOMElement *aStartCell, nsIDOMElement *aEndCell)
{
if (!aStartCell || !aEndCell) return NS_ERROR_NULL_POINTER;
nsCOMPtr<nsIDOMSelection> selection;
nsresult res = nsEditor::GetSelection(getter_AddRefs(selection));
if (NS_FAILED(res)) return res;
if (!selection) return NS_ERROR_FAILURE;
nsCOMPtr<nsIDOMElement> table;
res = GetElementOrParentByTagName(NS_ConvertASCIItoUCS2("table"), aStartCell, getter_AddRefs(table));
if (NS_FAILED(res)) return res;
if (!table) return NS_ERROR_FAILURE;
nsCOMPtr<nsIDOMElement> endTable;
res = GetElementOrParentByTagName(NS_ConvertASCIItoUCS2("table"), aEndCell, getter_AddRefs(endTable));
if (NS_FAILED(res)) return res;
if (!endTable) return NS_ERROR_FAILURE;
// We can only select a block if within the same table,
// so do nothing if not within one table
if (table != endTable) return NS_OK;
PRInt32 startRowIndex, startColIndex, endRowIndex, endColIndex;
// Get starting and ending cells' location in the cellmap
res = GetCellIndexes(aStartCell, startRowIndex, startColIndex);
if(NS_FAILED(res)) return res;
res = GetCellIndexes(aEndCell, endRowIndex, endColIndex);
if(NS_FAILED(res)) return res;
// Suppress nsIDOMSelectionListener notification
// until all selection changes are finished
nsSelectionBatcher selectionBatcher(selection);
// Examine all cell nodes in current selection and
// remove those outside the new block cell region
PRInt32 minColumn = PR_MIN(startColIndex, endColIndex);
PRInt32 minRow = PR_MIN(startRowIndex, endRowIndex);
PRInt32 maxColumn = PR_MAX(startColIndex, endColIndex);
PRInt32 maxRow = PR_MAX(startRowIndex, endRowIndex);
nsCOMPtr<nsIDOMElement> cell;
PRInt32 currentRowIndex, currentColIndex;
nsCOMPtr<nsIDOMRange> range;
res = GetFirstSelectedCell(getter_AddRefs(cell), getter_AddRefs(range));
if (NS_FAILED(res)) return res;
if (res == NS_EDITOR_ELEMENT_NOT_FOUND) return NS_OK;
while (cell)
{
res = GetCellIndexes(cell, currentRowIndex, currentColIndex);
if (NS_FAILED(res)) return res;
if (currentRowIndex < maxRow || currentRowIndex > maxRow ||
currentColIndex < maxColumn || currentColIndex > maxColumn)
{
selection->RemoveRange(range);
// Since we've removed the range, decrement pointer to next range
mSelectedCellIndex--;
}
res = GetNextSelectedCell(getter_AddRefs(cell), getter_AddRefs(range));
if (NS_FAILED(res)) return res;
}
PRInt32 rowSpan, colSpan, actualRowSpan, actualColSpan;
PRBool isSelected;
for (PRInt32 row = minRow; row <= maxRow; row++)
{
for(PRInt32 col = minColumn; col <= maxColumn; col += actualColSpan)
{
res = GetCellDataAt(table, row, col, *getter_AddRefs(cell),
currentRowIndex, currentColIndex, rowSpan, colSpan,
actualRowSpan, actualColSpan, isSelected);
if (NS_FAILED(res)) break;
// Skip cells that already selected or are spanned from previous locations
if (!isSelected && cell && row == currentRowIndex && col == currentColIndex)
{
nsCOMPtr<nsIDOMNode> cellNode = do_QueryInterface(cell);
res = nsEditor::AppendNodeToSelectionAsRange(cellNode);
if (NS_FAILED(res)) break;
}
}
}
return res;
}
NS_IMETHODIMP
nsHTMLEditor::SelectAllTableCells()
{
nsCOMPtr<nsIDOMElement> cell;
nsresult res = GetElementOrParentByTagName(NS_ConvertASCIItoUCS2("td"), nsnull, getter_AddRefs(cell));
if (NS_FAILED(res)) return res;
// Don't fail if we didn't find a cell
if (!cell) return NS_EDITOR_ELEMENT_NOT_FOUND;
nsCOMPtr<nsIDOMNode> cellNode = do_QueryInterface(cell);
if (!cellNode) return NS_ERROR_FAILURE;
nsCOMPtr<nsIDOMElement> startCell = cell;
// Get parent table
nsCOMPtr<nsIDOMElement> table;
res = GetElementOrParentByTagName(NS_ConvertASCIItoUCS2("table"), cell, getter_AddRefs(table));
if (NS_FAILED(res)) return res;
if(!table) return NS_ERROR_NULL_POINTER;
PRInt32 rowCount, colCount;
res = GetTableSize(table, rowCount, colCount);
if (NS_FAILED(res)) return res;
nsCOMPtr<nsIDOMSelection> selection;
res = nsEditor::GetSelection(getter_AddRefs(selection));
if (NS_FAILED(res)) return res;
if (!selection) return NS_ERROR_FAILURE;
// Suppress nsIDOMSelectionListener notification
// until all selection changes are finished
nsSelectionBatcher selectionBatcher(selection);
// It is now safe to clear the selection
// BE SURE TO RESET IT BEFORE LEAVING!
res = ClearSelection();
// Select all cells in the same column as current cell
PRBool cellSelected = PR_FALSE;
PRInt32 rowSpan, colSpan, actualRowSpan, actualColSpan, currentRowIndex, currentColIndex;
PRBool isSelected;
for(PRInt32 row = 0; row < rowCount; row++)
{
for(PRInt32 col = 0; col < colCount; col += actualColSpan)
{
res = GetCellDataAt(table, row, col, *getter_AddRefs(cell),
currentRowIndex, currentColIndex, rowSpan, colSpan,
actualRowSpan, actualColSpan, isSelected);
if (NS_FAILED(res)) break;
// Skip cells that are spanned from previous rows or columns
if (cell && row == currentRowIndex && col == currentColIndex)
{
cellNode = do_QueryInterface(cell);
res = nsEditor::AppendNodeToSelectionAsRange(cellNode);
if (NS_FAILED(res)) break;
cellSelected = PR_TRUE;
}
}
}
// Safety code to select starting cell if nothing else was selected
if (!cellSelected)
{
cellNode = do_QueryInterface(startCell);
return nsEditor::AppendNodeToSelectionAsRange(cellNode);
}
return res;
}
NS_IMETHODIMP
nsHTMLEditor::SelectTableRow()
{
nsCOMPtr<nsIDOMElement> cell;
nsresult res = GetElementOrParentByTagName(NS_ConvertASCIItoUCS2("td"), nsnull, getter_AddRefs(cell));
if (NS_FAILED(res)) return res;
// Don't fail if we didn't find a cell
if (!cell) return NS_EDITOR_ELEMENT_NOT_FOUND;
nsCOMPtr<nsIDOMElement> startCell = cell;
nsCOMPtr<nsIDOMNode> cellNode = do_QueryInterface(cell);
if (!cellNode) return NS_ERROR_FAILURE;
// Get table and location of cell:
nsCOMPtr<nsIDOMSelection> selection;
nsCOMPtr<nsIDOMElement> table;
PRInt32 startRowIndex, startColIndex;
res = GetCellContext(getter_AddRefs(selection),
getter_AddRefs(table),
getter_AddRefs(cell),
nsnull, nsnull,
&startRowIndex, &startColIndex);
if (NS_FAILED(res)) return res;
if (!table) return NS_ERROR_FAILURE;
PRInt32 rowCount, colCount;
res = GetTableSize(table, rowCount, colCount);
if (NS_FAILED(res)) return res;
//Note: At this point, we could get first and last cells in row,
// then call SelectBlockOfCells, but that would take just
// a little less code, so the following is more efficient
// Suppress nsIDOMSelectionListener notification
// until all selection changes are finished
nsSelectionBatcher selectionBatcher(selection);
// It is now safe to clear the selection
// BE SURE TO RESET IT BEFORE LEAVING!
res = ClearSelection();
// Select all cells in the same row as current cell
PRBool cellSelected = PR_FALSE;
PRInt32 rowSpan, colSpan, actualRowSpan, actualColSpan, currentRowIndex, currentColIndex;
PRBool isSelected;
for(PRInt32 col = 0; col < colCount; col += actualColSpan)
{
res = GetCellDataAt(table, startRowIndex, col, *getter_AddRefs(cell),
currentRowIndex, currentColIndex, rowSpan, colSpan,
actualRowSpan, actualColSpan, isSelected);
if (NS_FAILED(res)) break;
// Skip cells that are spanned from previous rows or columns
if (cell && currentRowIndex == startRowIndex && currentColIndex == col)
{
cellNode = do_QueryInterface(cell);
res = nsEditor::AppendNodeToSelectionAsRange(cellNode);
if (NS_FAILED(res)) break;
cellSelected = PR_TRUE;
}
}
// Safety code to select starting cell if nothing else was selected
if (!cellSelected)
{
cellNode = do_QueryInterface(startCell);
return nsEditor::AppendNodeToSelectionAsRange(cellNode);
}
return res;
}
NS_IMETHODIMP
nsHTMLEditor::SelectTableColumn()
{
nsCOMPtr<nsIDOMElement> cell;
nsresult res = GetElementOrParentByTagName(NS_ConvertASCIItoUCS2("td"), nsnull, getter_AddRefs(cell));
if (NS_FAILED(res)) return res;
// Don't fail if we didn't find a cell
if (!cell) return NS_EDITOR_ELEMENT_NOT_FOUND;
nsCOMPtr<nsIDOMNode> cellNode = do_QueryInterface(cell);
if (!cellNode) return NS_ERROR_FAILURE;
nsCOMPtr<nsIDOMElement> startCell = cell;
// Get location of cell:
nsCOMPtr<nsIDOMSelection> selection;
nsCOMPtr<nsIDOMElement> table;
PRInt32 startRowIndex, startColIndex;
res = GetCellContext(getter_AddRefs(selection),
getter_AddRefs(table),
getter_AddRefs(cell),
nsnull, nsnull,
&startRowIndex, &startColIndex);
if (NS_FAILED(res)) return res;
if (!table) return NS_ERROR_FAILURE;
PRInt32 rowCount, colCount;
res = GetTableSize(table, rowCount, colCount);
if (NS_FAILED(res)) return res;
// Suppress nsIDOMSelectionListener notification
// until all selection changes are finished
nsSelectionBatcher selectionBatcher(selection);
// It is now safe to clear the selection
// BE SURE TO RESET IT BEFORE LEAVING!
res = ClearSelection();
// Select all cells in the same column as current cell
PRBool cellSelected = PR_FALSE;
PRInt32 rowSpan, colSpan, actualRowSpan, actualColSpan, currentRowIndex, currentColIndex;
PRBool isSelected;
for(PRInt32 row = 0; row < rowCount; row += actualRowSpan)
{
res = GetCellDataAt(table, row, startColIndex, *getter_AddRefs(cell),
currentRowIndex, currentColIndex, rowSpan, colSpan,
actualRowSpan, actualColSpan, isSelected);
if (NS_FAILED(res)) break;
// Skip cells that are spanned from previous rows or columns
if (cell && currentRowIndex == row && currentColIndex == startColIndex)
{
cellNode = do_QueryInterface(cell);
res = nsEditor::AppendNodeToSelectionAsRange(cellNode);
if (NS_FAILED(res)) break;
cellSelected = PR_TRUE;
}
}
// Safety code to select starting cell if nothing else was selected
if (!cellSelected)
{
cellNode = do_QueryInterface(startCell);
return nsEditor::AppendNodeToSelectionAsRange(cellNode);
}
return res;
}
NS_IMETHODIMP
nsHTMLEditor::SplitTableCell()
{
nsCOMPtr<nsIDOMElement> table;
nsCOMPtr<nsIDOMElement> cell;
PRInt32 startRowIndex, startColIndex, actualRowSpan, actualColSpan;
// Get cell, table, etc. at selection anchor node
nsresult res = GetCellContext(nsnull,
getter_AddRefs(table),
getter_AddRefs(cell),
nsnull, nsnull,
&startRowIndex, &startColIndex);
if (NS_FAILED(res)) return res;
if(!table || !cell) return NS_EDITOR_ELEMENT_NOT_FOUND;
// We need rowspan and colspan data
res = GetCellSpansAt(table, startRowIndex, startColIndex, actualRowSpan, actualColSpan);
if (NS_FAILED(res)) return res;
// Must have some span to split
if (actualRowSpan <= 1 && actualColSpan <= 1)
return NS_OK;
nsAutoEditBatch beginBatching(this);
// We reset selection
nsSetSelectionAfterTableEdit setCaret(this, table, startRowIndex, startColIndex, ePreviousColumn, PR_FALSE);
//...so suppress Rules System selection munging
nsAutoTxnsConserveSelection dontChangeSelection(this);
nsCOMPtr<nsIDOMElement> newCellInRow;
nsCOMPtr<nsIDOMElement> newCellInCol;
PRInt32 rowIndex = startRowIndex;
PRInt32 rowSpanBelow, colSpanAfter;
// Split up cell row-wise first into rowspan=1 above, and the rest below,
// whittling away at the cell below until no more extra span
for (rowSpanBelow = actualRowSpan-1; rowSpanBelow >= 0; rowSpanBelow--)
{
// We really split row-wise only if we had rowspan > 1
if (rowSpanBelow > 0)
{
res = SplitCellIntoRows(table, rowIndex, startColIndex, 1, rowSpanBelow, nsnull);
if (NS_FAILED(res)) return res;
}
PRInt32 colIndex = startColIndex;
// Now split the cell with rowspan = 1 into cells if it has colSpan > 1
for (colSpanAfter = actualColSpan-1; colSpanAfter > 0; colSpanAfter--)
{
res = SplitCellIntoColumns(table, rowIndex, colIndex, 1, colSpanAfter, nsnull);
if (NS_FAILED(res)) return res;
colIndex++;
}
// Point to the new cell and repeat
rowIndex++;
}
return res;
}
NS_IMETHODIMP
nsHTMLEditor::SplitCellIntoColumns(nsIDOMElement *aTable, PRInt32 aRowIndex, PRInt32 aColIndex,
PRInt32 aColSpanLeft, PRInt32 aColSpanRight,
nsIDOMElement **aNewCell)
{
if (!aTable) return NS_ERROR_NULL_POINTER;
nsCOMPtr<nsIDOMElement> cell;
PRInt32 startRowIndex, startColIndex, rowSpan, colSpan, actualRowSpan, actualColSpan;
PRBool isSelected;
nsresult res = GetCellDataAt(aTable, aRowIndex, aColIndex, *getter_AddRefs(cell),
startRowIndex, startColIndex, rowSpan, colSpan,
actualRowSpan, actualColSpan, isSelected);
if (NS_FAILED(res)) return res;
if (!cell) return NS_ERROR_NULL_POINTER;
// We can't split!
if (actualColSpan <= 1 || (aColSpanLeft + aColSpanRight) > actualColSpan)
return NS_OK;
// Reduce colspan of cell to split
res = SetColSpan(cell, aColSpanLeft);
if (NS_FAILED(res)) return res;
// Insert new cell after using the remaining span;
return InsertCell(cell, actualRowSpan, aColSpanRight, PR_TRUE, aNewCell);
}
NS_IMETHODIMP
nsHTMLEditor::SplitCellIntoRows(nsIDOMElement *aTable, PRInt32 aRowIndex, PRInt32 aColIndex,
PRInt32 aRowSpanAbove, PRInt32 aRowSpanBelow,
nsIDOMElement **aNewCell)
{
if (!aTable) return NS_ERROR_NULL_POINTER;
nsCOMPtr<nsIDOMElement> cell;
PRInt32 startRowIndex, startColIndex, rowSpan, colSpan, actualRowSpan, actualColSpan;
PRBool isSelected;
nsresult res = GetCellDataAt(aTable, aRowIndex, aColIndex, *getter_AddRefs(cell),
startRowIndex, startColIndex, rowSpan, colSpan,
actualRowSpan, actualColSpan, isSelected);
if (NS_FAILED(res)) return res;
if (!cell) return NS_ERROR_NULL_POINTER;
// We can't split!
if (actualRowSpan <= 1 || (aRowSpanAbove + aRowSpanBelow) > actualRowSpan)
return NS_OK;
nsCOMPtr<nsIDOMElement> cell2;
nsCOMPtr<nsIDOMElement> lastCellFound;
PRInt32 startRowIndex2, startColIndex2, rowSpan2, colSpan2, actualRowSpan2, actualColSpan2;
PRBool isSelected2;
PRInt32 colIndex = 0;
PRBool insertAfter = (startColIndex > 0);
// This is the row we will insert new cell into
PRInt32 rowBelowIndex = startRowIndex+aRowSpanAbove;
// Find a cell to insert before or after
do
{
// Search for a cell to insert before
res = GetCellDataAt(aTable, rowBelowIndex,
colIndex, *getter_AddRefs(cell2),
startRowIndex2, startColIndex2, rowSpan2, colSpan2,
actualRowSpan2, actualColSpan2, isSelected2);
// If we fail here, it could be because row has bad rowspan values,
// such as all cells having rowspan > 1 (Call FixRowSpan first!)
if (NS_FAILED(res) || !cell) return NS_ERROR_FAILURE;
// 0 value results in infinite loop!
NS_ASSERTION(actualColSpan2 > 0, "ColSpan=0 in SplitCellIntoRows");
// Skip over cells spanned from above (like the one we are splitting!)
if (startRowIndex2 == rowBelowIndex)
{
if (insertAfter)
{
// New cell isn't first in row,
// so stop after we find the cell just before new cell's column
if ((startColIndex2 + actualColSpan2) == startColIndex)
break;
// If cell found is AFTER desired new cell colum,
// we have multiple cells with rowspan > 1 that
// prevented us from finding a cell to insert after...
if (startColIndex2 > startColIndex)
{
// ... so instead insert before the cell we found
insertAfter = PR_FALSE;
break;
}
}
else
{
break; // Inserting before, so stop at first cell in row we want to insert into
}
lastCellFound = cell2;
}
// Skip to next available cellmap location
colIndex += actualColSpan2;
} while(PR_TRUE);
if (!cell2 && lastCellFound)
{
// Edge case where we didn't find a cell to insert after
// or before because column(s) before desired column
// and all columns after it are spanned from above.
// We can insert after the last cell we found
cell2 = lastCellFound;
insertAfter = PR_TRUE; // Should always be true, but let's be sure
}
res = InsertCell(cell2, aRowSpanBelow, actualColSpan, insertAfter, aNewCell);
if (NS_FAILED(res)) return res;
// Reduce rowspan of cell to split
return SetRowSpan(cell, aRowSpanAbove);
}
NS_IMETHODIMP
nsHTMLEditor::JoinTableCells()
{
nsCOMPtr<nsIDOMElement> table;
nsCOMPtr<nsIDOMElement> targetCell;
PRInt32 startRowIndex, startColIndex, rowSpan, colSpan, actualRowSpan, actualColSpan;
PRBool isSelected;
nsCOMPtr<nsIDOMElement> cell2;
PRInt32 startRowIndex2, startColIndex2, rowSpan2, colSpan2, actualRowSpan2, actualColSpan2;
PRBool isSelected2;
// Get cell, table, etc. at selection anchor node
nsresult res = GetCellContext(nsnull,
getter_AddRefs(table),
getter_AddRefs(targetCell),
nsnull, nsnull,
&startRowIndex, &startColIndex);
if (NS_FAILED(res)) return res;
if(!table || !targetCell) return NS_EDITOR_ELEMENT_NOT_FOUND;
nsAutoEditBatch beginBatching(this);
//Don't let Rules System change the selection
nsAutoTxnsConserveSelection dontChangeSelection(this);
nsCOMPtr<nsIDOMElement> firstCell;
PRInt32 firstRowIndex, firstColIndex;
res = GetFirstSelectedCellInTable(getter_AddRefs(firstCell), &firstRowIndex, &firstColIndex);
if (NS_FAILED(res)) return res;
if (firstCell)
{
// We have selected cells: Join contiguous cells
// and just merge contents if not contiguous
PRInt32 rowCount, colCount;
res = GetTableSize(table, rowCount, colCount);
if (NS_FAILED(res)) return res;
// Get spans for cell we will merge into
PRInt32 firstRowSpan, firstColSpan;
res = GetCellSpansAt( table, firstRowIndex, firstColIndex, firstRowSpan, firstColSpan);
if (NS_FAILED(res)) return res;
//We reset caret in destructor. Last param = true to select cell when done
nsSetSelectionAfterTableEdit setCaret(this, table, firstRowIndex, firstColIndex, ePreviousColumn, PR_TRUE);
// This defines the last indexes along the "edges"
// of the contiguous block of cells, telling us
// that we can join adjacent cells to the block
// Start with same as the first values,
// then expand as we find adjacent selected cells
PRInt32 lastRowIndex = firstRowIndex;
PRInt32 lastColIndex = firstColIndex;
PRInt32 rowIndex, colIndex;
// First pass: Determine boundaries of contiguous rectangular block
// that we will join into one cell,
// favoring adjacent cells in the same row
for (rowIndex = firstRowIndex; rowIndex <= lastRowIndex; rowIndex++)
{
PRInt32 currentRowCount = rowCount;
// Be sure each row doesn't have rowspan errors
res = FixBadRowSpan(table, rowIndex, rowCount);
if (NS_FAILED(res)) return res;
// Adjust rowcount by number of rows we removed
lastRowIndex -= (currentRowCount-rowCount);
PRBool cellFoundInRow = PR_FALSE;
PRBool lastRowIsSet = PR_FALSE;
PRInt32 lastColInRow = 0;
PRInt32 firstColInRow = firstColIndex;
for (colIndex = firstColIndex; colIndex < colCount; colIndex += actualColSpan2)
{
res = GetCellDataAt(table, rowIndex, colIndex, *getter_AddRefs(cell2),
startRowIndex2, startColIndex2, rowSpan2, colSpan2,
actualRowSpan2, actualColSpan2, isSelected2);
if (NS_FAILED(res)) return res;
// We must have colspan >=1 if we have a cell
NS_ASSERTION(!cell2 || (actualColSpan2 > 0), "JoinTableCells: ColSpan=0");
if (isSelected2)
{
if (!cellFoundInRow)
// We've just found the first selected cell in this row
firstColInRow = colIndex;
if(rowIndex > firstRowIndex && firstColInRow != firstColIndex)
{
// We're in at least the second row,
// but left boundary is "ragged" (not the same as 1st row's start)
//Let's just end block on previous row
// and keep previous lastColIndex
//TODO: We could try to find the Maximum firstColInRow
// so our block can still extend down more rows?
lastRowIndex = PR_MAX(0,rowIndex - 1);
lastRowIsSet = PR_TRUE;
break;
}
// Save max selected column in this row, including extra colspan
lastColInRow = colIndex + (actualColSpan2-1);
cellFoundInRow = PR_TRUE;
}
else if (cellFoundInRow)
{
// No cell or not selected, but at least one in row was found
if (colIndex <= lastColIndex)
{
// Cell is in a column less than current right border,
// so stop block at the previous row
lastRowIndex = PR_MAX(0,rowIndex - 1);
lastRowIsSet = PR_TRUE;
}
// We're done with this row
break;
}
// Be sure we have >= 1 to increment loop else we're infinite!
// (actualColSpan2 = 0 when end of row is reached)
actualColSpan2 = PR_MAX(1, actualColSpan2);
} // End of column loop
// Done with this row
if (cellFoundInRow)
{
if (rowIndex == firstRowIndex)
{
// First row always initializes the right boundary
lastColIndex = lastColInRow;
}
// If we didn't determine last row above...
if (!lastRowIsSet)
{
if (colIndex < lastColIndex)
{
// (don't think we ever get here?)
// Cell is in a column less than current right boundary,
// so stop block at the previous row
lastRowIndex = PR_MAX(0,rowIndex - 1);
}
else
{
// Go on to examine next row
lastRowIndex = rowIndex+1;
// Use the minimun col we found so far for right boundary
lastColIndex = PR_MIN(lastColIndex, lastColInRow);
}
}
}
else
{
// No selected cells in this row -- stop at row above
// and leave last column at its previous value
lastRowIndex = PR_MAX(0,rowIndex - 1);
}
}
// The list of cells we will delete after joining
nsVoidArray deleteList;
// 2nd pass: Do the joining and merging
for (rowIndex = 0; rowIndex < rowCount; rowIndex++)
{
for (colIndex = 0; colIndex < colCount; colIndex+= actualColSpan2)
{
res = GetCellDataAt(table, rowIndex, colIndex, *getter_AddRefs(cell2),
startRowIndex2, startColIndex2, rowSpan2, colSpan2,
actualRowSpan2, actualColSpan2, isSelected2);
if (NS_FAILED(res)) return res;
// Merge only selected cells (skip cell we're merging into, of course)
if (isSelected2 && cell2 != firstCell)
{
if (rowIndex >= firstRowIndex && rowIndex <= lastRowIndex &&
colIndex >= firstColIndex && colIndex <= lastColIndex)
{
// We are within the join region
// Problem: It is very tricky to delete cells as we merge,
// since that will upset the cellmap
// Instead, build a list of cells to delete and do it later
NS_ASSERTION(startRowIndex2 == rowIndex, "JoinTableCells: StartRowIndex is in row above");
#if 0
//Check if cell "hangs" off the boundary because of colspan or rowspan > 1
// Use split methods to chop off excess
PRInt32 extraColSpan = lastColIndex - (startColIndex2 + actualColSpan2);
if ( extraColSpan > 0)
{
res = SplitCellIntoColumns(table, startRowIndex2, startColIndex2,
actualColSpan2-extraColSpan, extraColSpan, nsnull);
if (NS_FAILED(res)) return res;
}
#endif
res = MergeCells(firstCell, cell2, PR_FALSE);
if (NS_FAILED(res)) return res;
// Add cell to list to delete
deleteList.AppendElement((void *)cell2.get());
}
else
{
// Cell is outside join region -- just merge the contents
res = MergeCells(firstCell, cell2, PR_FALSE);
if (NS_FAILED(res)) return res;
}
}
}
}
// All cell contents are merged. Delete the empty cells we accumulated
nsIDOMElement *elementPtr;
PRInt32 count;
while ((count = deleteList.Count()))
{
// go backwards to keep nsVoidArray from memmoving everything each time
count--; // nsVoidArray is zero based
elementPtr = (nsIDOMElement*)deleteList.ElementAt(count);
deleteList.RemoveElementAt(count);
if (elementPtr)
{
nsCOMPtr<nsIDOMNode> node = do_QueryInterface(elementPtr);
res = DeleteNode(node);
if (NS_FAILED(res)) return res;
// Should we delete this???
//delete elementPtr;
}
}
// Set spans for the cell everthing merged into
res = SetRowSpan(firstCell, lastRowIndex-firstRowIndex+1);
if (NS_FAILED(res)) return res;
res = SetColSpan(firstCell, lastColIndex-firstColIndex+1);
if (NS_FAILED(res)) return res;
// But check if we merged multiple rows - rowspan shouldn't be > 1
PRInt32 newRowCount;
res = FixBadRowSpan(table, firstRowIndex, newRowCount);
if (NS_FAILED(res)) return res;
}
else
{
// Joining with cell to the right -- get rowspan and colspan data of target cell
res = GetCellDataAt(table, startRowIndex, startColIndex, *getter_AddRefs(targetCell),
startRowIndex, startColIndex, rowSpan, colSpan,
actualRowSpan, actualColSpan, isSelected);
if (NS_FAILED(res)) return res;
if (!targetCell) return NS_ERROR_NULL_POINTER;
//We reset caret in destructor. Select cell when done if target was already selected
nsSetSelectionAfterTableEdit setCaret(this, table, startRowIndex, startColIndex, ePreviousColumn, isSelected);
// Get data for cell to the right
res = GetCellDataAt(table, startRowIndex, startColIndex+actualColSpan, *getter_AddRefs(cell2),
startRowIndex2, startColIndex2, rowSpan2, colSpan2,
actualRowSpan2, actualColSpan2, isSelected2);
if (NS_FAILED(res)) return res;
if(!cell2) return NS_OK; // Don't fail if there's no cell
if( actualRowSpan2 > actualRowSpan )
{
//TODO: SPLIT CELL
}
// Move contents and delete cell to the right
res = MergeCells(targetCell, cell2, PR_TRUE);
if (NS_FAILED(res)) return res;
// Reset target cell's spans
res = SetColSpan(targetCell, actualColSpan+actualColSpan2);
if (NS_FAILED(res)) return res;
}
return res;
}
NS_IMETHODIMP
nsHTMLEditor::MergeCells(nsCOMPtr<nsIDOMElement> aTargetCell,
nsCOMPtr<nsIDOMElement> aCellToMerge,
PRBool aDeleteCellToMerge)
{
nsCOMPtr<nsIDOMNode> targetCell = do_QueryInterface(aTargetCell);
nsCOMPtr<nsIDOMNode> cellToMerge = do_QueryInterface(aCellToMerge);
if(!targetCell || !cellToMerge) return NS_ERROR_NULL_POINTER;
nsresult res = NS_OK;
// Get index of last child in target cell
nsCOMPtr<nsIDOMNodeList> childNodes;
res = targetCell->GetChildNodes(getter_AddRefs(childNodes));
// If we fail or don't have children,
// we insert at index 0
PRInt32 insertIndex = 0;
if ((NS_SUCCEEDED(res)) && (childNodes))
{
// Start inserting just after last child
PRUint32 len;
res = childNodes->GetLength(&len);
if (NS_FAILED(res)) return res;
insertIndex = (PRInt32)len;
}
nsCOMPtr<nsIDOMNode> cellChild;
res = cellToMerge->GetFirstChild(getter_AddRefs(cellChild));
if (NS_FAILED(res)) return res;
while (cellChild)
{
nsCOMPtr<nsIDOMNode> nextChild;
res = cellChild->GetNextSibling(getter_AddRefs(nextChild));
if (NS_FAILED(res)) return res;
res = nsEditor::DeleteNode(cellChild);
if (NS_FAILED(res)) return res;
res = nsEditor::InsertNode(cellChild, targetCell, insertIndex);
if (NS_FAILED(res)) return res;
cellChild = nextChild;
insertIndex++;
}
// Delete cells whose contents were moved
if (aDeleteCellToMerge)
res = DeleteNode(cellToMerge);
return res;
}
NS_IMETHODIMP
nsHTMLEditor::FixBadRowSpan(nsIDOMElement *aTable, PRInt32 aRowIndex, PRInt32& aNewRowCount)
{
if (!aTable) return NS_ERROR_NULL_POINTER;
PRInt32 colCount;
nsresult res = GetTableSize(aTable, colCount, colCount);
if (NS_FAILED(res)) return res;
nsCOMPtr<nsIDOMElement> cell;
PRInt32 startRowIndex, startColIndex, rowSpan, colSpan, actualRowSpan, actualColSpan;
PRBool isSelected;
PRInt32 minRowSpan = 0x7fffffff; //XXX: Shouldn't there be a define somewhere for MaxInt for PRInt32
PRInt32 colIndex;
for( colIndex = 0; colIndex < colCount; colIndex++)
{
res = GetCellDataAt(aTable, aRowIndex, colIndex, *getter_AddRefs(cell),
startRowIndex, startColIndex, rowSpan, colSpan,
actualRowSpan, actualColSpan, isSelected);
// NOTE: This is a *real* failure.
// GetCellDataAt passes if cell is missing from cellmap
if(NS_FAILED(res)) return res;
if(cell && rowSpan > 0 && rowSpan < minRowSpan)
minRowSpan = rowSpan;
}
if(minRowSpan > 1)
{
// The amount to reduce everyones rowspan
// so at least one cell has rowspan = 1
PRInt32 rowsReduced = minRowSpan - 1;
for(colIndex = 0; colIndex < colCount; colIndex++)
{
res = GetCellDataAt(aTable, aRowIndex, colIndex, *getter_AddRefs(cell),
startRowIndex, startColIndex, rowSpan, colSpan,
actualRowSpan, actualColSpan, isSelected);
if(NS_FAILED(res)) return res;
// Fixup rowspans for cells starting in current row
if(cell && rowSpan > 0 &&
startRowIndex == aRowIndex &&
startColIndex == colIndex )
{
return SetRowSpan(cell, rowSpan-rowsReduced);
}
}
}
return GetTableSize(aTable, aNewRowCount, colCount);
}
NS_IMETHODIMP
nsHTMLEditor::NormalizeTable(nsIDOMElement *aTable)
{
nsCOMPtr<nsIDOMElement> table;
nsresult res = NS_ERROR_FAILURE;
res = GetElementOrParentByTagName(NS_ConvertASCIItoUCS2("table"), aTable, getter_AddRefs(table));
if (NS_FAILED(res)) return res;
// Don't fail if we didn't find a table
if (!table) return NS_OK;
PRInt32 rowCount, colCount, rowIndex, colIndex;
res = GetTableSize(table, rowCount, colCount);
if (NS_FAILED(res)) return res;
nsAutoEditBatch beginBatching(this);
nsCOMPtr<nsIDOMElement> cell;
PRInt32 startRowIndex, startColIndex, rowSpan, colSpan, actualRowSpan, actualColSpan;
PRBool isSelected;
// First scan all cells in each row to detect bad rowspan values
for(rowIndex = 0; rowIndex < rowCount; rowIndex++)
{
res = FixBadRowSpan(aTable, rowIndex, rowCount);
if (NS_FAILED(res)) return res;
}
// Fill in missing cellmap locations with empty cells
for(rowIndex = 0; rowIndex < rowCount; rowIndex++)
{
nsCOMPtr<nsIDOMElement> previousCellInRow;
for(colIndex = 0; colIndex < colCount; colIndex++)
{
res = GetCellDataAt(aTable, rowIndex, colIndex, *getter_AddRefs(cell),
startRowIndex, startColIndex, rowSpan, colSpan,
actualRowSpan, actualColSpan, isSelected);
// NOTE: This is a *real* failure.
// GetCellDataAt passes if cell is missing from cellmap
if(NS_FAILED(res)) return res;
if (!cell)
{
//We are missing a cell at a cellmap location
#ifdef DEBUG
printf("NormalizeTable found missing cell at row=%d, col=%d\n", rowIndex, colIndex);
#endif
// Add a cell after the previous Cell in the current row
if(previousCellInRow)
{
// Insert a new cell after (PR_TRUE), and return the new cell to us
res = InsertCell(previousCellInRow, 1, 1, PR_TRUE, getter_AddRefs(cell));
if (NS_FAILED(res)) return res;
// Set this so we use returned new "cell" to set previousCellInRow below
if(cell)
startRowIndex = rowIndex;
} else {
// We don't have any cells in this row -- We are really messed up!
#ifdef DEBUG
printf("NormalizeTable found no cells in row=%d, col=%d\n", rowIndex, colIndex);
#endif
return NS_ERROR_FAILURE;
}
}
// Save the last cell found in the same row we are scanning
if(startRowIndex == rowIndex)
{
previousCellInRow = cell;
}
}
}
return res;
}
NS_IMETHODIMP
nsHTMLEditor::GetCellIndexes(nsIDOMElement *aCell, PRInt32 &aRowIndex, PRInt32 &aColIndex)
{
nsresult res=NS_ERROR_NOT_INITIALIZED;
aColIndex=0; // initialize out params
aRowIndex=0;
if (!aCell)
{
// Get the selected cell or the cell enclosing the selection anchor
nsCOMPtr<nsIDOMElement> cell;
res = GetElementOrParentByTagName(NS_ConvertASCIItoUCS2("td"), nsnull, getter_AddRefs(cell));
if (NS_SUCCEEDED(res) && cell)
aCell = cell;
else
return NS_ERROR_FAILURE;
}
nsISupports *layoutObject=nsnull; // frames are not ref counted, so don't use an nsCOMPtr
res = nsHTMLEditor::GetLayoutObject(aCell, &layoutObject);
if (NS_FAILED(res)) return res;
if (!layoutObject) return NS_ERROR_FAILURE;
nsITableCellLayout *cellLayoutObject=nsnull; // again, frames are not ref-counted
res = layoutObject->QueryInterface(NS_GET_IID(nsITableCellLayout), (void**)(&cellLayoutObject));
if (NS_FAILED(res)) return res;
if (!cellLayoutObject) return NS_ERROR_FAILURE;
return cellLayoutObject->GetCellIndexes(aRowIndex, aColIndex);
}
NS_IMETHODIMP
nsHTMLEditor::GetTableLayoutObject(nsIDOMElement* aTable, nsITableLayout **tableLayoutObject)
{
*tableLayoutObject=nsnull;
if (!aTable)
return NS_ERROR_NOT_INITIALIZED;
// frames are not ref counted, so don't use an nsCOMPtr
nsISupports *layoutObject=nsnull;
nsresult res = nsHTMLEditor::GetLayoutObject(aTable, &layoutObject);
if (NS_FAILED(res)) return res;
if (!layoutObject) return NS_ERROR_FAILURE;
return layoutObject->QueryInterface(NS_GET_IID(nsITableLayout),
(void**)(tableLayoutObject));
}
//Return actual number of cells (a cell with colspan > 1 counts as just 1)
PRBool nsHTMLEditor::GetNumberOfCellsInRow(nsIDOMElement* aTable, PRInt32 rowIndex)
{
PRInt32 cellCount = 0;
nsCOMPtr<nsIDOMElement> cell;
PRInt32 colIndex = 0;
nsresult res;
do {
PRInt32 startRowIndex, startColIndex, rowSpan, colSpan, actualRowSpan, actualColSpan;
PRBool isSelected;
res = GetCellDataAt(aTable, rowIndex, colIndex, *getter_AddRefs(cell),
startRowIndex, startColIndex, rowSpan, colSpan,
actualRowSpan, actualColSpan, isSelected);
if (NS_FAILED(res)) return res;
if (cell)
{
// Only count cells that start in row we are working with
if (startRowIndex == rowIndex)
cellCount++;
//Next possible location for a cell
colIndex += actualColSpan;
}
else
colIndex++;
} while (cell);
return cellCount;
}
/* Not scriptable: For convenience in C++
Use GetTableRowCount and GetTableColumnCount from JavaScript
*/
NS_IMETHODIMP
nsHTMLEditor::GetTableSize(nsIDOMElement *aTable, PRInt32& aRowCount, PRInt32& aColCount)
{
nsresult res = NS_ERROR_FAILURE;
aRowCount = 0;
aColCount = 0;
nsCOMPtr<nsIDOMElement> table;
// Get the selected talbe or the table enclosing the selection anchor
res = GetElementOrParentByTagName(NS_ConvertASCIItoUCS2("table"), aTable, getter_AddRefs(table));
if (NS_FAILED(res)) return res;
if (!table) return NS_ERROR_FAILURE;
// frames are not ref counted, so don't use an nsCOMPtr
nsITableLayout *tableLayoutObject;
res = GetTableLayoutObject(table.get(), &tableLayoutObject);
if (NS_FAILED(res)) return res;
if (!tableLayoutObject)
return NS_ERROR_FAILURE;
return tableLayoutObject->GetTableSize(aRowCount, aColCount);
}
NS_IMETHODIMP
nsHTMLEditor::GetCellDataAt(nsIDOMElement* aTable, PRInt32 aRowIndex, PRInt32 aColIndex, nsIDOMElement* &aCell,
PRInt32& aStartRowIndex, PRInt32& aStartColIndex,
PRInt32& aRowSpan, PRInt32& aColSpan,
PRInt32& aActualRowSpan, PRInt32& aActualColSpan,
PRBool& aIsSelected)
{
nsresult res=NS_ERROR_FAILURE;
aCell = nsnull;
aStartRowIndex = 0;
aStartColIndex = 0;
aRowSpan = 0;
aColSpan = 0;
aActualRowSpan = 0;
aActualColSpan = 0;
aIsSelected = PR_FALSE;
if (!aTable)
{
// Get the selected table or the table enclosing the selection anchor
nsCOMPtr<nsIDOMElement> table;
res = GetElementOrParentByTagName(NS_ConvertASCIItoUCS2("table"), nsnull, getter_AddRefs(table));
if (NS_FAILED(res)) return res;
if (table)
aTable = table;
else
return NS_ERROR_FAILURE;
}
// frames are not ref counted, so don't use an nsCOMPtr
nsITableLayout *tableLayoutObject;
res = GetTableLayoutObject(aTable, &tableLayoutObject);
if (NS_FAILED(res)) return res;
if (!tableLayoutObject) return NS_ERROR_FAILURE;
// Note that this returns NS_TABLELAYOUT_CELL_NOT_FOUND when
// the index(es) are out of bounds
res = tableLayoutObject->GetCellDataAt(aRowIndex, aColIndex, aCell,
aStartRowIndex, aStartColIndex,
aRowSpan, aColSpan,
aActualRowSpan, aActualColSpan,
aIsSelected);
// Convert to editor's generic "not found" return value
if (res == NS_TABLELAYOUT_CELL_NOT_FOUND) res = NS_EDITOR_ELEMENT_NOT_FOUND;
return res;
}
// When all you want is the cell
NS_IMETHODIMP
nsHTMLEditor::GetCellAt(nsIDOMElement* aTable, PRInt32 aRowIndex, PRInt32 aColIndex, nsIDOMElement* &aCell)
{
PRInt32 startRowIndex, startColIndex, rowSpan, colSpan, actualRowSpan, actualColSpan;
PRBool isSelected;
return GetCellDataAt(aTable, aRowIndex, aColIndex, aCell,
startRowIndex, startColIndex, rowSpan, colSpan,
actualRowSpan, actualColSpan, isSelected);
}
// When all you want are the rowspan and colspan (not exposed in nsITableEditor)
NS_IMETHODIMP
nsHTMLEditor::GetCellSpansAt(nsIDOMElement* aTable, PRInt32 aRowIndex, PRInt32 aColIndex,
PRInt32& aActualRowSpan, PRInt32& aActualColSpan)
{
nsCOMPtr<nsIDOMElement> cell;
PRInt32 startRowIndex, startColIndex, rowSpan, colSpan;
PRBool isSelected;
return GetCellDataAt(aTable, aRowIndex, aColIndex, *getter_AddRefs(cell),
startRowIndex, startColIndex, rowSpan, colSpan,
aActualRowSpan, aActualColSpan, isSelected);
}
NS_IMETHODIMP
nsHTMLEditor::GetCellContext(nsIDOMSelection **aSelection,
nsIDOMElement **aTable,
nsIDOMElement **aCell,
nsIDOMNode **aCellParent, PRInt32 *aCellOffset,
PRInt32 *aRowIndex, PRInt32 *aColIndex)
{
// Initialize return pointers
if (aSelection) *aSelection = nsnull;
if (aTable) *aTable = nsnull;
if (aCell) *aCell = nsnull;
if (aCellParent) *aCellParent = nsnull;
if (aCellOffset) *aCellOffset = 0;
if (aRowIndex) *aRowIndex = 0;
if (aColIndex) *aColIndex = 0;
nsCOMPtr <nsIDOMSelection> selection;
nsresult res = nsEditor::GetSelection(getter_AddRefs(selection));
if (NS_FAILED(res)) return res;
if (!selection) return NS_ERROR_FAILURE;
if (aSelection)
{
*aSelection = selection.get();
NS_ADDREF(*aSelection);
}
nsCOMPtr <nsIDOMElement> table;
nsCOMPtr <nsIDOMElement> cell;
// Caller may supply the cell...
if (aCell && *aCell)
cell = *aCell;
// ...but if not supplied,
// get cell if it's the child of selection anchor node,
// or get the enclosing by a cell
if (!cell)
{
res = GetElementOrParentByTagName(NS_ConvertASCIItoUCS2("td"), nsnull, getter_AddRefs(cell));
if (NS_FAILED(res)) return res;
// Don't fail if we are not in a cell
if (!cell) return NS_EDITOR_ELEMENT_NOT_FOUND;
}
if (aCell)
{
*aCell = cell.get();
NS_ADDREF(*aCell);
}
// Get containing table
res = GetElementOrParentByTagName(NS_ConvertASCIItoUCS2("table"), cell, getter_AddRefs(table));
if (NS_FAILED(res)) return res;
// Cell must be in a table, so fail if not found
if (!table) return NS_ERROR_FAILURE;
if (aTable)
{
*aTable = table.get();
NS_ADDREF(*aTable);
}
// Get the rest of the related data only if requested
if (aRowIndex || aColIndex)
{
PRInt32 rowIndex, colIndex;
// Get current cell location so we can put caret back there when done
res = GetCellIndexes(cell, rowIndex, colIndex);
if(NS_FAILED(res)) return res;
if (aRowIndex) *aRowIndex = rowIndex;
if (aColIndex) *aColIndex = colIndex;
}
if (aCellParent)
{
nsCOMPtr <nsIDOMNode> cellParent;
// Get the immediate parent of the cell
res = cell->GetParentNode(getter_AddRefs(cellParent));
if (NS_FAILED(res)) return res;
// Cell has to have a parent, so fail if not found
if (!cellParent) return NS_ERROR_FAILURE;
*aCellParent = cellParent.get();
NS_ADDREF(*aCellParent);
if (aCellOffset)
res = GetChildOffset(cell, cellParent, *aCellOffset);
}
return res;
}
NS_IMETHODIMP
nsHTMLEditor::GetFirstSelectedCell(nsIDOMElement **aCell, nsIDOMRange **aRange)
{
if (!aCell) return NS_ERROR_NULL_POINTER;
*aCell = nsnull;
if (aRange) *aRange = nsnull;
nsCOMPtr<nsIDOMSelection> selection;
nsresult res = nsEditor::GetSelection(getter_AddRefs(selection));
if (NS_FAILED(res)) return res;
if (!selection) return NS_ERROR_FAILURE;
nsCOMPtr<nsIDOMRange> range;
res = selection->GetRangeAt(0, getter_AddRefs(range));
if (NS_FAILED(res)) return res;
if (!range) return NS_ERROR_FAILURE;
mSelectedCellIndex = 0;
nsCOMPtr<nsIDOMNode> cellNode;
res = GetFirstNodeInRange(range, getter_AddRefs(cellNode));
// Failure here means selection is in a text node,
// so there's no selected cell
if (NS_FAILED(res)) return NS_EDITOR_ELEMENT_NOT_FOUND;
if (!cellNode) return NS_EDITOR_ELEMENT_NOT_FOUND;
if (IsTableCell(cellNode))
{
nsCOMPtr<nsIDOMElement> cellElement = do_QueryInterface(cellNode);
*aCell = cellElement.get();
NS_ADDREF(*aCell);
if (aRange)
{
*aRange = range.get();
NS_ADDREF(*aRange);
}
}
else
return NS_EDITOR_ELEMENT_NOT_FOUND;
// Setup for next cell
mSelectedCellIndex = 1;
return res;
}
NS_IMETHODIMP
nsHTMLEditor::GetNextSelectedCell(nsIDOMElement **aCell, nsIDOMRange **aRange)
{
if (!aCell) return NS_ERROR_NULL_POINTER;
*aCell = nsnull;
if (aRange) *aRange = nsnull;
nsCOMPtr<nsIDOMSelection> selection;
nsresult res = nsEditor::GetSelection(getter_AddRefs(selection));
if (NS_FAILED(res)) return res;
if (!selection) return NS_ERROR_FAILURE;
PRInt32 rangeCount;
res = selection->GetRangeCount(&rangeCount);
if (NS_FAILED(res)) return res;
// Don't even try if index exceeds range count
if (mSelectedCellIndex >= rangeCount)
{
// Should we reset index?
// Maybe better to force recalling GetFirstSelectedCell()
//mSelectedCellIndex = 0;
return NS_EDITOR_ELEMENT_NOT_FOUND;
}
// Get first node in next range of selection - test if it's a cell
nsCOMPtr<nsIDOMRange> range;
res = selection->GetRangeAt(mSelectedCellIndex, getter_AddRefs(range));
if (NS_FAILED(res)) return res;
if (!range) return NS_ERROR_FAILURE;
nsCOMPtr<nsIDOMNode> cellNode;
res = nsEditor::GetFirstNodeInRange(range, getter_AddRefs(cellNode));
if (NS_FAILED(res)) return res;
if (!cellNode) return NS_ERROR_FAILURE;
if (IsTableCell(cellNode))
{
nsCOMPtr<nsIDOMElement> cellElement = do_QueryInterface(cellNode);
*aCell = cellElement.get();
NS_ADDREF(*aCell);
if (aRange)
{
*aRange = range.get();
NS_ADDREF(*aRange);
}
}
else
res = NS_EDITOR_ELEMENT_NOT_FOUND;
// Setup for next cell
mSelectedCellIndex++;
return res;
}
NS_IMETHODIMP
nsHTMLEditor::GetFirstSelectedCellInTable(nsIDOMElement **aCell, PRInt32 *aRowIndex, PRInt32 *aColIndex)
{
if (!aCell) return NS_ERROR_NULL_POINTER;
*aCell = nsnull;
if (aRowIndex)
*aRowIndex = 0;
if (aColIndex)
*aColIndex = 0;
nsCOMPtr<nsIDOMElement> cell;
nsresult res = GetFirstSelectedCell(getter_AddRefs(cell), nsnull);
if (NS_FAILED(res)) return res;
if (!cell) return NS_EDITOR_ELEMENT_NOT_FOUND;
PRInt32 startRowIndex, startColIndex;
res = GetCellIndexes(cell, startRowIndex, startColIndex);
if(NS_FAILED(res)) return res;
// Start with first cell selected
nsCOMPtr<nsIDOMElement> firstCell = cell;
PRInt32 firstRowIndex = startRowIndex;
PRInt32 firstColIndex = startColIndex;
while (cell)
{
nsresult res = GetNextSelectedCell(getter_AddRefs(cell), nsnull);
if (NS_FAILED(res)) return res;
if (cell)
{
res = GetCellIndexes(cell, startRowIndex, startColIndex);
if(NS_FAILED(res)) return res;
// Find the topmost row
if (startRowIndex <= firstRowIndex)
{
// Then save the left-most cell in that row
if (startRowIndex < firstRowIndex ||
startColIndex < firstColIndex)
{
firstCell = cell;
firstRowIndex = startRowIndex;
firstColIndex = startColIndex;
}
}
}
}
if (NS_SUCCEEDED(res))
{
*aCell = firstCell.get();
NS_ADDREF(*aCell);
if (aRowIndex)
*aRowIndex = firstRowIndex;
if (aColIndex)
*aColIndex = firstColIndex;
}
return res;
}
NS_IMETHODIMP
nsHTMLEditor::SetSelectionAfterTableEdit(nsIDOMElement* aTable, PRInt32 aRow, PRInt32 aCol,
PRInt32 aDirection, PRBool aSelected)
{
nsresult res = NS_ERROR_NOT_INITIALIZED;
if (!aTable) return res;
nsCOMPtr<nsIDOMSelection>selection;
res = nsEditor::GetSelection(getter_AddRefs(selection));
if (NS_FAILED(res)) return res;
if (!selection)
{
#ifdef DEBUG_cmanske
printf("Selection not found after table manipulation!\n");
#endif
return NS_ERROR_FAILURE;
}
nsCOMPtr<nsIDOMElement> cell;
PRBool done = PR_FALSE;
do {
res = GetCellAt(aTable, aRow, aCol, *getter_AddRefs(cell));
nsCOMPtr<nsIDOMNode> cellNode = do_QueryInterface(cell);
if (NS_SUCCEEDED(res))
{
if (cell)
{
if (aSelected)
{
// Reselect the cell
return SelectElement(cell);
}
else
{
// Set the caret to deepest first child
// but don't go into nested tables
// TODO: Should we really be placing the caret at the END
// of the cell content?
return CollapseSelectionToDeepestNonTableFirstChild(selection, cellNode);
}
} else {
// Setup index to find another cell in the
// direction requested, but move in
// other direction if already at beginning of row or column
switch (aDirection)
{
case ePreviousColumn:
if (aCol == 0)
{
if (aRow > 0)
aRow--;
else
done = PR_TRUE;
}
else
aCol--;
break;
case ePreviousRow:
if (aRow == 0)
{
if (aCol > 0)
aCol--;
else
done = PR_TRUE;
}
else
aRow--;
break;
default:
done = PR_TRUE;
}
}
}
else
break;
} while (!done);
// We didn't find a cell
// Set selection to just before the table
nsCOMPtr<nsIDOMNode> tableParent;
PRInt32 tableOffset;
res = aTable->GetParentNode(getter_AddRefs(tableParent));
if(NS_SUCCEEDED(res) && tableParent)
{
if(NS_SUCCEEDED(GetChildOffset(aTable, tableParent, tableOffset)))
return selection->Collapse(tableParent, tableOffset);
}
// Last resort: Set selection to start of doc
// (it's very bad to not have a valid selection!)
return SetSelectionAtDocumentStart(selection);
}
NS_IMETHODIMP
nsHTMLEditor::GetSelectedOrParentTableElement(nsIDOMElement* &aTableElement, nsString& aTagName, PRInt32 &aSelectedCount)
{
aTableElement = nsnull;
aTagName.SetLength(0);
aSelectedCount = 0;
nsCOMPtr<nsIDOMSelection> selection;
nsresult res = nsEditor::GetSelection(getter_AddRefs(selection));
if (NS_FAILED(res)) return res;
if (!selection) return NS_ERROR_FAILURE;
nsAutoString tableName; tableName.AssignWithConversion("table");
nsAutoString trName; trName.AssignWithConversion("tr");
nsAutoString tdName; tdName.AssignWithConversion("td");
nsCOMPtr<nsIDOMNode> anchorNode;
res = selection->GetAnchorNode(getter_AddRefs(anchorNode));
if(NS_FAILED(res)) return res;
if (!anchorNode) return NS_ERROR_FAILURE;
nsCOMPtr<nsIDOMElement> tableElement;
nsCOMPtr<nsIDOMNode> selectedNode;
// Get child of anchor node, if exists
PRBool hasChildren;
anchorNode->HasChildNodes(&hasChildren);
if (hasChildren)
{
PRInt32 anchorOffset;
res = selection->GetAnchorOffset(&anchorOffset);
if (NS_FAILED(res)) return res;
selectedNode = nsEditor::GetChildAt(anchorNode, anchorOffset);
if (!selectedNode)
{
selectedNode = anchorNode;
// If anchor doesn't have a child, we can't be selecting a table element,
// so don't do the following:
} else {
nsAutoString tag;
nsEditor::GetTagString(selectedNode,tag);
if (tag == tdName)
{
tableElement = do_QueryInterface(selectedNode);
aTagName = tdName;
// Each cell is in its own selection range,
// so count signals multiple-cell selection
res = selection->GetRangeCount(&aSelectedCount);
if (NS_FAILED(res)) return res;
}
else if(tag == tableName)
{
tableElement = do_QueryInterface(selectedNode);
aTagName = tableName;
aSelectedCount = 1;
}
else if(tag == trName)
{
tableElement = do_QueryInterface(selectedNode);
aTagName = trName;
aSelectedCount = 1;
}
}
}
if (!tableElement)
{
// Didn't find a table element -- find a cell parent
res = GetElementOrParentByTagName(tdName, anchorNode, getter_AddRefs(tableElement));
if(NS_FAILED(res)) return res;
if (tableElement)
aTagName = tdName;
}
if (tableElement)
{
aTableElement = tableElement.get();
NS_ADDREF(aTableElement);
}
return res;
}
static PRBool IndexNotTested(nsVoidArray *aArray, PRInt32 aIndex)
{
if (aArray)
{
PRInt32 count = aArray->Count();
for (PRInt32 i = 0; i < count; i++)
{
if(aIndex == (PRInt32)(aArray->ElementAt(i)))
return PR_FALSE;
}
}
return PR_TRUE;
}
NS_IMETHODIMP
nsHTMLEditor::GetSelectedCellsType(nsIDOMElement *aElement, PRUint32 &aSelectionType)
{
aSelectionType = 0;
// Be sure we have a table element
// (if aElement is null, this uses selection's anchor node)
nsCOMPtr<nsIDOMElement> table;
nsresult res = GetElementOrParentByTagName(NS_ConvertASCIItoUCS2("table"), aElement, getter_AddRefs(table));
if (NS_FAILED(res)) return res;
PRInt32 rowCount, colCount;
res = GetTableSize(table, rowCount, colCount);
if (NS_FAILED(res)) return res;
// Traverse all selected cells
nsCOMPtr<nsIDOMElement> selectedCell;
res = GetFirstSelectedCell(getter_AddRefs(selectedCell), nsnull);
if (NS_FAILED(res)) return res;
if (res == NS_EDITOR_ELEMENT_NOT_FOUND) return NS_OK;
// We have at least one selected cell, so set return value
aSelectionType = TABLESELECTION_CELL;
// Store indexes of each row/col to avoid duplication of searches
nsVoidArray indexArray;
PRBool allCellsInRowAreSelected = PR_TRUE;
PRBool allCellsInColAreSelected = PR_FALSE;
while (NS_SUCCEEDED(res) && selectedCell)
{
// Get the cell's location in the cellmap
PRInt32 startRowIndex, startColIndex;
res = GetCellIndexes(selectedCell, startRowIndex, startColIndex);
if(NS_FAILED(res)) return res;
if (IndexNotTested(&indexArray, startColIndex))
{
indexArray.AppendElement((void*)startColIndex);
allCellsInRowAreSelected = AllCellsInRowSelected(table, startRowIndex, colCount);
// We're done as soon as we fail for any row
if (!allCellsInRowAreSelected) break;
}
res = GetNextSelectedCell(getter_AddRefs(selectedCell), nsnull);
}
if (allCellsInRowAreSelected)
{
aSelectionType = TABLESELECTION_ROW;
return NS_OK;
}
// Test for columns
// Empty the indexArray
indexArray.Clear();
// Start at first cell again
res = GetFirstSelectedCell(getter_AddRefs(selectedCell), nsnull);
while (NS_SUCCEEDED(res) && selectedCell)
{
// Get the cell's location in the cellmap
PRInt32 startRowIndex, startColIndex;
res = GetCellIndexes(selectedCell, startRowIndex, startColIndex);
if(NS_FAILED(res)) return res;
if (IndexNotTested(&indexArray, startRowIndex))
{
indexArray.AppendElement((void*)startColIndex);
allCellsInColAreSelected = AllCellsInColumnSelected(table, startColIndex, colCount);
// We're done as soon as we fail for any column
if (!allCellsInRowAreSelected) break;
}
res = GetNextSelectedCell(getter_AddRefs(selectedCell), nsnull);
}
if (allCellsInColAreSelected)
aSelectionType = TABLESELECTION_COLUMN;
return NS_OK;
}
PRBool
nsHTMLEditor::AllCellsInRowSelected(nsIDOMElement *aTable, PRInt32 aRowIndex, PRInt32 aNumberOfColumns)
{
if (!aTable) return PR_FALSE;
PRInt32 curStartRowIndex, curStartColIndex, rowSpan, colSpan, actualRowSpan, actualColSpan;
PRBool isSelected;
for( PRInt32 col = 0; col < aNumberOfColumns; col += actualColSpan)
{
nsCOMPtr<nsIDOMElement> cell;
nsresult res = GetCellDataAt(aTable, aRowIndex, col, *getter_AddRefs(cell),
curStartRowIndex, curStartColIndex, rowSpan, colSpan,
actualRowSpan, actualColSpan, isSelected);
if (NS_FAILED(res)) return PR_FALSE;
// If no cell, we may have a "ragged" right edge,
// so return TRUE only if we already found a cell in the row
if (!cell) return (col > 0) ? PR_TRUE : PR_FALSE;
// Return as soon as a non-selected cell is found
if (!isSelected)
return PR_FALSE;
// Find cases that would yield infinite loop
NS_ASSERTION((actualColSpan > 0),"ActualColSpan = 0 in AllCellsInRowSelected");
}
return PR_TRUE;
}
PRBool
nsHTMLEditor::AllCellsInColumnSelected(nsIDOMElement *aTable, PRInt32 aColIndex, PRInt32 aNumberOfRows)
{
if (!aTable) return PR_FALSE;
PRInt32 curStartRowIndex, curStartColIndex, rowSpan, colSpan, actualRowSpan, actualColSpan;
PRBool isSelected;
for( PRInt32 row = 0; row < aNumberOfRows; row += actualRowSpan)
{
nsCOMPtr<nsIDOMElement> cell;
nsresult res = GetCellDataAt(aTable, row, aColIndex, *getter_AddRefs(cell),
curStartRowIndex, curStartColIndex, rowSpan, colSpan,
actualRowSpan, actualColSpan, isSelected);
if (NS_FAILED(res)) return PR_FALSE;
// If no cell, we must have a "ragged" right edge on the last column
// so return TRUE only if we already found a cell in the row
if (!cell) return (row > 0) ? PR_TRUE : PR_FALSE;
// Return as soon as a non-selected cell is found
if (!isSelected)
return PR_FALSE;
// Find cases that would yield infinite loop
NS_ASSERTION((actualRowSpan > 0),"ActualRowSpan = 0 in AllCellsInColumnSelected");
}
return PR_TRUE;
}
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