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HTMLTableEditor.cpp
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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#include <stdio.h>
#include "mozilla/HTMLEditor.h"
#include "HTMLEditUtils.h"
#include "mozilla/Assertions.h"
#include "mozilla/EditorUtils.h"
#include "mozilla/dom/Selection.h"
#include "mozilla/dom/Element.h"
#include "nsAString.h"
#include "nsAlgorithm.h"
#include "nsCOMPtr.h"
#include "nsDebug.h"
#include "nsError.h"
#include "nsGkAtoms.h"
#include "nsIAtom.h"
#include "nsIContent.h"
#include "nsIDOMElement.h"
#include "nsIDOMNode.h"
#include "nsIEditor.h"
#include "nsIFrame.h"
#include "nsINode.h"
#include "nsIPresShell.h"
#include "nsISupportsUtils.h"
#include "nsITableCellLayout.h" // For efficient access to table cell
#include "nsITableEditor.h"
#include "nsLiteralString.h"
#include "nsQueryFrame.h"
#include "nsRange.h"
#include "nsString.h"
#include "nsTArray.h"
#include "nsTableCellFrame.h"
#include "nsTableWrapperFrame.h"
#include "nscore.h"
#include <algorithm>
namespace mozilla {
using namespace dom;
/**
* Stack based helper class for restoring selection after table edit.
*/
class MOZ_STACK_CLASS AutoSelectionSetterAfterTableEdit final
{
private:
nsCOMPtr<nsITableEditor> mTableEditor;
nsCOMPtr<nsIDOMElement> mTable;
int32_t mCol, mRow, mDirection, mSelected;
public:
AutoSelectionSetterAfterTableEdit(nsITableEditor* aTableEditor,
nsIDOMElement* aTable,
int32_t aRow,
int32_t aCol,
int32_t aDirection,
bool aSelected)
: mTableEditor(aTableEditor)
, mTable(aTable)
, mCol(aCol)
, mRow(aRow)
, mDirection(aDirection)
, mSelected(aSelected)
{
}
~AutoSelectionSetterAfterTableEdit()
{
if (mTableEditor) {
mTableEditor->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()
{
mTableEditor = nullptr;
mTable = nullptr;
}
};
NS_IMETHODIMP
HTMLEditor::InsertCell(nsIDOMElement* aCell,
int32_t aRowSpan,
int32_t aColSpan,
bool aAfter,
bool aIsHeader,
nsIDOMElement** aNewCell)
{
NS_ENSURE_TRUE(aCell, NS_ERROR_NULL_POINTER);
if (aNewCell) {
*aNewCell = nullptr;
}
// And the parent and offsets needed to do an insert
nsCOMPtr<nsIDOMNode> cellParent;
nsresult rv = aCell->GetParentNode(getter_AddRefs(cellParent));
NS_ENSURE_SUCCESS(rv, rv);
NS_ENSURE_TRUE(cellParent, NS_ERROR_NULL_POINTER);
int32_t cellOffset = GetChildOffset(aCell, cellParent);
nsCOMPtr<nsIDOMElement> newCell;
rv = CreateElementWithDefaults(aIsHeader ? NS_LITERAL_STRING("th") :
NS_LITERAL_STRING("tb"),
getter_AddRefs(newCell));
if (NS_FAILED(rv)) {
return rv;
}
if (!newCell) {
return NS_ERROR_FAILURE;
}
//Optional: return new cell created
if (aNewCell) {
*aNewCell = newCell.get();
NS_ADDREF(*aNewCell);
}
if (aRowSpan > 1) {
// Note: Do NOT use editor transaction for this
nsAutoString newRowSpan;
newRowSpan.AppendInt(aRowSpan, 10);
newCell->SetAttribute(NS_LITERAL_STRING("rowspan"), newRowSpan);
}
if (aColSpan > 1) {
// Note: Do NOT use editor transaction for this
nsAutoString newColSpan;
newColSpan.AppendInt(aColSpan, 10);
newCell->SetAttribute(NS_LITERAL_STRING("colspan"), newColSpan);
}
if (aAfter) {
cellOffset++;
}
//Don't let Rules System change the selection
AutoTransactionsConserveSelection dontChangeSelection(this);
return InsertNode(newCell, cellParent, cellOffset);
}
NS_IMETHODIMP
HTMLEditor::SetColSpan(nsIDOMElement* aCell,
int32_t aColSpan)
{
NS_ENSURE_TRUE(aCell, NS_ERROR_NULL_POINTER);
nsAutoString newSpan;
newSpan.AppendInt(aColSpan, 10);
return SetAttribute(aCell, NS_LITERAL_STRING("colspan"), newSpan);
}
NS_IMETHODIMP
HTMLEditor::SetRowSpan(nsIDOMElement* aCell,
int32_t aRowSpan)
{
NS_ENSURE_TRUE(aCell, NS_ERROR_NULL_POINTER);
nsAutoString newSpan;
newSpan.AppendInt(aRowSpan, 10);
return SetAttribute(aCell, NS_LITERAL_STRING("rowspan"), newSpan);
}
NS_IMETHODIMP
HTMLEditor::InsertTableCell(int32_t aNumber,
bool aAfter)
{
nsCOMPtr<nsIDOMElement> table;
nsCOMPtr<nsIDOMElement> curCell;
nsCOMPtr<nsIDOMNode> cellParent;
int32_t cellOffset, startRowIndex, startColIndex;
nsresult rv = GetCellContext(nullptr,
getter_AddRefs(table),
getter_AddRefs(curCell),
getter_AddRefs(cellParent), &cellOffset,
&startRowIndex, &startColIndex);
NS_ENSURE_SUCCESS(rv, rv);
// Don't fail if no cell found
NS_ENSURE_TRUE(curCell, NS_SUCCESS_EDITOR_ELEMENT_NOT_FOUND);
// Get more data for current cell in row we are inserting at (we need COLSPAN)
int32_t curStartRowIndex, curStartColIndex, rowSpan, colSpan, actualRowSpan, actualColSpan;
bool isSelected;
rv = GetCellDataAt(table, startRowIndex, startColIndex,
getter_AddRefs(curCell),
&curStartRowIndex, &curStartColIndex, &rowSpan, &colSpan,
&actualRowSpan, &actualColSpan, &isSelected);
NS_ENSURE_SUCCESS(rv, rv);
NS_ENSURE_TRUE(curCell, NS_ERROR_FAILURE);
int32_t newCellIndex = aAfter ? (startColIndex+colSpan) : startColIndex;
//We control selection resetting after the insert...
AutoSelectionSetterAfterTableEdit setCaret(this, table, startRowIndex,
newCellIndex, ePreviousColumn,
false);
//...so suppress Rules System selection munging
AutoTransactionsConserveSelection dontChangeSelection(this);
for (int32_t i = 0; i < aNumber; i++) {
nsCOMPtr<nsIDOMElement> newCell;
rv = CreateElementWithDefaults(NS_LITERAL_STRING("td"),
getter_AddRefs(newCell));
if (NS_SUCCEEDED(rv) && newCell) {
if (aAfter) {
cellOffset++;
}
rv = InsertNode(newCell, cellParent, cellOffset);
if (NS_FAILED(rv)) {
break;
}
}
}
// XXX This is perhaps the result of the last call of InsertNode() or
// CreateElementWithDefaults().
return rv;
}
NS_IMETHODIMP
HTMLEditor::GetFirstRow(nsIDOMElement* aTableElement,
nsIDOMNode** aRowNode)
{
NS_ENSURE_TRUE(aRowNode, NS_ERROR_NULL_POINTER);
*aRowNode = nullptr;
NS_ENSURE_TRUE(aTableElement, NS_ERROR_NULL_POINTER);
nsCOMPtr<nsIDOMElement> tableElement;
nsresult rv = GetElementOrParentByTagName(NS_LITERAL_STRING("table"),
aTableElement,
getter_AddRefs(tableElement));
NS_ENSURE_SUCCESS(rv, rv);
NS_ENSURE_TRUE(tableElement, NS_ERROR_NULL_POINTER);
nsCOMPtr<nsIDOMNode> tableChild;
rv = tableElement->GetFirstChild(getter_AddRefs(tableChild));
NS_ENSURE_SUCCESS(rv, rv);
while (tableChild) {
nsCOMPtr<nsIContent> content = do_QueryInterface(tableChild);
if (content) {
if (content->IsHTMLElement(nsGkAtoms::tr)) {
// Found a row directly under <table>
*aRowNode = tableChild;
NS_ADDREF(*aRowNode);
return NS_OK;
}
// Look for row in one of the row container elements
if (content->IsAnyOfHTMLElements(nsGkAtoms::tbody,
nsGkAtoms::thead,
nsGkAtoms::tfoot)) {
nsCOMPtr<nsIDOMNode> rowNode;
rv = tableChild->GetFirstChild(getter_AddRefs(rowNode));
NS_ENSURE_SUCCESS(rv, rv);
// We can encounter textnodes here -- must find a row
while (rowNode && !HTMLEditUtils::IsTableRow(rowNode)) {
nsCOMPtr<nsIDOMNode> nextNode;
rv = rowNode->GetNextSibling(getter_AddRefs(nextNode));
NS_ENSURE_SUCCESS(rv, rv);
rowNode = nextNode;
}
if (rowNode) {
*aRowNode = rowNode.get();
NS_ADDREF(*aRowNode);
return NS_OK;
}
}
}
// Here if table child was a CAPTION or COLGROUP
// or child of a row parent wasn't a row (bad HTML?),
// or first child was a textnode
// Look in next table child
nsCOMPtr<nsIDOMNode> nextChild;
rv = tableChild->GetNextSibling(getter_AddRefs(nextChild));
NS_ENSURE_SUCCESS(rv, rv);
tableChild = nextChild;
}
// If here, row was not found
return NS_SUCCESS_EDITOR_ELEMENT_NOT_FOUND;
}
NS_IMETHODIMP
HTMLEditor::GetNextRow(nsIDOMNode* aCurrentRowNode,
nsIDOMNode** aRowNode)
{
NS_ENSURE_TRUE(aRowNode, NS_ERROR_NULL_POINTER);
*aRowNode = nullptr;
NS_ENSURE_TRUE(aCurrentRowNode, NS_ERROR_NULL_POINTER);
if (!HTMLEditUtils::IsTableRow(aCurrentRowNode)) {
return NS_ERROR_FAILURE;
}
nsCOMPtr<nsIDOMNode> nextRow;
nsresult rv = aCurrentRowNode->GetNextSibling(getter_AddRefs(nextRow));
NS_ENSURE_SUCCESS(rv, rv);
nsCOMPtr<nsIDOMNode> nextNode;
// Skip over any textnodes here
while (nextRow && !HTMLEditUtils::IsTableRow(nextRow)) {
rv = nextRow->GetNextSibling(getter_AddRefs(nextNode));
NS_ENSURE_SUCCESS(rv, rv);
nextRow = nextNode;
}
if (nextRow) {
*aRowNode = nextRow.get();
NS_ADDREF(*aRowNode);
return NS_OK;
}
// No row found, search for rows in other table sections
nsCOMPtr<nsIDOMNode> rowParent;
rv = aCurrentRowNode->GetParentNode(getter_AddRefs(rowParent));
NS_ENSURE_SUCCESS(rv, rv);
NS_ENSURE_TRUE(rowParent, NS_ERROR_NULL_POINTER);
nsCOMPtr<nsIDOMNode> parentSibling;
rv = rowParent->GetNextSibling(getter_AddRefs(parentSibling));
NS_ENSURE_SUCCESS(rv, rv);
while (parentSibling) {
rv = parentSibling->GetFirstChild(getter_AddRefs(nextRow));
NS_ENSURE_SUCCESS(rv, rv);
// We can encounter textnodes here -- must find a row
while (nextRow && !HTMLEditUtils::IsTableRow(nextRow)) {
rv = nextRow->GetNextSibling(getter_AddRefs(nextNode));
NS_ENSURE_SUCCESS(rv, rv);
nextRow = nextNode;
}
if (nextRow) {
*aRowNode = nextRow.get();
NS_ADDREF(*aRowNode);
return NS_OK;
}
// We arrive here only if a table section has no children
// or first child of section is not a row (bad HTML or more "_moz_text" nodes!)
// So look for another section sibling
rv = parentSibling->GetNextSibling(getter_AddRefs(nextNode));
NS_ENSURE_SUCCESS(rv, rv);
parentSibling = nextNode;
}
// If here, row was not found
return NS_SUCCESS_EDITOR_ELEMENT_NOT_FOUND;
}
nsresult
HTMLEditor::GetLastCellInRow(nsIDOMNode* aRowNode,
nsIDOMNode** aCellNode)
{
NS_ENSURE_TRUE(aCellNode, NS_ERROR_NULL_POINTER);
*aCellNode = nullptr;
NS_ENSURE_TRUE(aRowNode, NS_ERROR_NULL_POINTER);
nsCOMPtr<nsIDOMNode> rowChild;
nsresult rv = aRowNode->GetLastChild(getter_AddRefs(rowChild));
NS_ENSURE_SUCCESS(rv, rv);
while (rowChild && !HTMLEditUtils::IsTableCell(rowChild)) {
// Skip over textnodes
nsCOMPtr<nsIDOMNode> previousChild;
rv = rowChild->GetPreviousSibling(getter_AddRefs(previousChild));
NS_ENSURE_SUCCESS(rv, rv);
rowChild = previousChild;
}
if (rowChild) {
*aCellNode = rowChild.get();
NS_ADDREF(*aCellNode);
return NS_OK;
}
// If here, cell was not found
return NS_SUCCESS_EDITOR_ELEMENT_NOT_FOUND;
}
NS_IMETHODIMP
HTMLEditor::InsertTableColumn(int32_t aNumber,
bool aAfter)
{
RefPtr<Selection> selection;
nsCOMPtr<nsIDOMElement> table;
nsCOMPtr<nsIDOMElement> curCell;
int32_t startRowIndex, startColIndex;
nsresult rv = GetCellContext(getter_AddRefs(selection),
getter_AddRefs(table),
getter_AddRefs(curCell),
nullptr, nullptr,
&startRowIndex, &startColIndex);
NS_ENSURE_SUCCESS(rv, rv);
// Don't fail if no cell found
NS_ENSURE_TRUE(curCell, NS_SUCCESS_EDITOR_ELEMENT_NOT_FOUND);
// Get more data for current cell (we need ROWSPAN)
int32_t curStartRowIndex, curStartColIndex, rowSpan, colSpan, actualRowSpan, actualColSpan;
bool isSelected;
rv = GetCellDataAt(table, startRowIndex, startColIndex,
getter_AddRefs(curCell),
&curStartRowIndex, &curStartColIndex,
&rowSpan, &colSpan,
&actualRowSpan, &actualColSpan, &isSelected);
NS_ENSURE_SUCCESS(rv, rv);
NS_ENSURE_TRUE(curCell, NS_ERROR_FAILURE);
AutoEditBatch beginBatching(this);
// Prevent auto insertion of BR in new cell until we're done
AutoRules beginRulesSniffing(this, EditAction::insertNode, nsIEditor::eNext);
// Use column after current cell if requested
if (aAfter) {
startColIndex += actualColSpan;
//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) {
SetColSpan(curCell, actualColSpan);
}
}
int32_t rowCount, colCount, rowIndex;
rv = GetTableSize(table, &rowCount, &colCount);
NS_ENSURE_SUCCESS(rv, rv);
//We reset caret in destructor...
AutoSelectionSetterAfterTableEdit setCaret(this, table, startRowIndex,
startColIndex, ePreviousRow,
false);
//.. so suppress Rules System selection munging
AutoTransactionsConserveSelection dontChangeSelection(this);
// If we are inserting after all existing columns
// Make sure table is "well formed"
// before appending new column
if (startColIndex >= colCount) {
NormalizeTable(table);
}
nsCOMPtr<nsIDOMNode> rowNode;
for (rowIndex = 0; rowIndex < rowCount; rowIndex++) {
if (startColIndex < colCount) {
// We are inserting before an existing column
rv = GetCellDataAt(table, rowIndex, startColIndex,
getter_AddRefs(curCell),
&curStartRowIndex, &curStartColIndex,
&rowSpan, &colSpan,
&actualRowSpan, &actualColSpan, &isSelected);
NS_ENSURE_SUCCESS(rv, rv);
// 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);
rv = InsertTableCell(aNumber, false);
}
}
} else {
// Get current row and append new cells after last cell in row
if (!rowIndex) {
rv = GetFirstRow(table.get(), getter_AddRefs(rowNode));
if (NS_WARN_IF(NS_FAILED(rv))) {
return rv;
}
} else {
nsCOMPtr<nsIDOMNode> nextRow;
rv = GetNextRow(rowNode.get(), getter_AddRefs(nextRow));
if (NS_WARN_IF(NS_FAILED(rv))) {
return rv;
}
rowNode = nextRow;
}
if (rowNode) {
nsCOMPtr<nsIDOMNode> lastCell;
rv = GetLastCellInRow(rowNode, getter_AddRefs(lastCell));
NS_ENSURE_SUCCESS(rv, rv);
NS_ENSURE_TRUE(lastCell, 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
// that there are cells in each cellmap location
selection->Collapse(curCell, 0);
rv = InsertTableCell(aNumber, true);
}
}
}
}
// XXX This is perhaps the result of the last call of InsertTableCell().
return rv;
}
NS_IMETHODIMP
HTMLEditor::InsertTableRow(int32_t aNumber,
bool aAfter)
{
nsCOMPtr<nsIDOMElement> table;
nsCOMPtr<nsIDOMElement> curCell;
int32_t startRowIndex, startColIndex;
nsresult rv = GetCellContext(nullptr,
getter_AddRefs(table),
getter_AddRefs(curCell),
nullptr, nullptr,
&startRowIndex, &startColIndex);
NS_ENSURE_SUCCESS(rv, rv);
// Don't fail if no cell found
NS_ENSURE_TRUE(curCell, NS_SUCCESS_EDITOR_ELEMENT_NOT_FOUND);
// Get more data for current cell in row we are inserting at (we need COLSPAN)
int32_t curStartRowIndex, curStartColIndex, rowSpan, colSpan, actualRowSpan, actualColSpan;
bool isSelected;
rv = GetCellDataAt(table, startRowIndex, startColIndex,
getter_AddRefs(curCell),
&curStartRowIndex, &curStartColIndex,
&rowSpan, &colSpan,
&actualRowSpan, &actualColSpan, &isSelected);
NS_ENSURE_SUCCESS(rv, rv);
NS_ENSURE_TRUE(curCell, NS_ERROR_FAILURE);
int32_t rowCount, colCount;
rv = GetTableSize(table, &rowCount, &colCount);
NS_ENSURE_SUCCESS(rv, rv);
AutoEditBatch beginBatching(this);
// Prevent auto insertion of BR in new cell until we're done
AutoRules beginRulesSniffing(this, EditAction::insertNode, nsIEditor::eNext);
if (aAfter) {
// Use row after current cell
startRowIndex += 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) {
SetRowSpan(curCell, actualRowSpan);
}
}
//We control selection resetting after the insert...
AutoSelectionSetterAfterTableEdit setCaret(this, table, startRowIndex,
startColIndex, ePreviousColumn,
false);
//...so suppress Rules System selection munging
AutoTransactionsConserveSelection dontChangeSelection(this);
nsCOMPtr<nsIDOMElement> cellForRowParent;
int32_t 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
int32_t colIndex = 0;
while (NS_SUCCEEDED(GetCellDataAt(table, startRowIndex, 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 {
// We have a cell in the insert row
// Count the number of cells we need to add to the new row
cellsInRow += actualColSpan;
// Save cell we will use below
if (!cellForRowParent) {
cellForRowParent = curCell;
}
}
// 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...
// XXX colspan=0 support has now been removed in table layout so maybe this can be cleaned up now? (bug 1243183)
cellsInRow = colCount;
// ...but we must compensate for all cells with rowSpan = 0 in the last row
int32_t lastRow = rowCount-1;
int32_t tempColIndex = 0;
while (NS_SUCCEEDED(GetCellDataAt(table, lastRow, tempColIndex,
getter_AddRefs(curCell),
&curStartRowIndex, &curStartColIndex,
&rowSpan, &colSpan,
&actualRowSpan, &actualColSpan,
&isSelected))) {
if (!rowSpan) {
cellsInRow -= actualColSpan;
}
tempColIndex += actualColSpan;
// Save cell from the last row that we will use below
if (!cellForRowParent && curStartRowIndex == lastRow) {
cellForRowParent = curCell;
}
}
}
nsCOMPtr<nsINode> cellNodeForRowParent = do_QueryInterface(cellForRowParent);
if (cellsInRow > 0) {
NS_NAMED_LITERAL_STRING(trStr, "tr");
if (!cellNodeForRowParent) {
return NS_ERROR_FAILURE;
}
nsCOMPtr<Element> parentRow =
GetElementOrParentByTagName(trStr, cellNodeForRowParent);
NS_ENSURE_TRUE(parentRow, NS_ERROR_NULL_POINTER);
// The row parent and offset where we will insert new row
nsCOMPtr<nsINode> parentOfRow = parentRow->GetParentNode();
NS_ENSURE_TRUE(parentOfRow, NS_ERROR_NULL_POINTER);
int32_t newRowOffset = parentOfRow->IndexOf(parentRow);
// Adjust for when adding past the end
if (aAfter && startRowIndex >= rowCount) {
newRowOffset++;
}
for (int32_t row = 0; row < aNumber; row++) {
// Create a new row
nsCOMPtr<Element> newRow = CreateElementWithDefaults(trStr);
NS_ENSURE_TRUE(newRow, NS_ERROR_FAILURE);
for (int32_t i = 0; i < cellsInRow; i++) {
nsCOMPtr<Element> newCell =
CreateElementWithDefaults(NS_LITERAL_STRING("td"));
NS_ENSURE_TRUE(newCell, NS_ERROR_FAILURE);
// Don't use transaction system yet! (not until entire row is
// inserted)
ErrorResult result;
newRow->AppendChild(*newCell, result);
if (NS_WARN_IF(result.Failed())) {
return result.StealNSResult();
}
}
// Use transaction system to insert the entire row+cells
// (Note that rows are inserted at same childoffset each time)
rv = InsertNode(*newRow, *parentOfRow, newRowOffset);
NS_ENSURE_SUCCESS(rv, rv);
}
}
// XXX This might be the result of the last call of
// CreateElementWithDefaults(), otherwise, NS_OK.
return rv;
}
// Editor helper only
// XXX Code changed for bug 217717 and now we don't need aSelection param
// TODO: Remove aSelection param
nsresult
HTMLEditor::DeleteTable2(nsIDOMElement* aTable,
Selection* aSelection)
{
NS_ENSURE_TRUE(aTable, NS_ERROR_NULL_POINTER);
// Select the table
nsresult rv = ClearSelection();
if (NS_WARN_IF(NS_FAILED(rv))) {
return rv;
}
rv = AppendNodeToSelectionAsRange(aTable);
NS_ENSURE_SUCCESS(rv, rv);
return DeleteSelection(nsIEditor::eNext, nsIEditor::eStrip);
}
NS_IMETHODIMP
HTMLEditor::DeleteTable()
{
RefPtr<Selection> selection;
nsCOMPtr<nsIDOMElement> table;
nsresult rv = GetCellContext(getter_AddRefs(selection),
getter_AddRefs(table),
nullptr, nullptr, nullptr, nullptr, nullptr);
NS_ENSURE_SUCCESS(rv, rv);
AutoEditBatch beginBatching(this);
return DeleteTable2(table, selection);
}
NS_IMETHODIMP
HTMLEditor::DeleteTableCell(int32_t aNumber)
{
RefPtr<Selection> selection;
nsCOMPtr<nsIDOMElement> table;
nsCOMPtr<nsIDOMElement> cell;
int32_t startRowIndex, startColIndex;
nsresult rv = GetCellContext(getter_AddRefs(selection),
getter_AddRefs(table),
getter_AddRefs(cell),
nullptr, nullptr,
&startRowIndex, &startColIndex);
NS_ENSURE_SUCCESS(rv, rv);
// Don't fail if we didn't find a table or cell
NS_ENSURE_TRUE(table && cell, NS_SUCCESS_EDITOR_ELEMENT_NOT_FOUND);
AutoEditBatch beginBatching(this);
// Prevent rules testing until we're done
AutoRules beginRulesSniffing(this, EditAction::deleteNode, nsIEditor::eNext);
nsCOMPtr<nsIDOMElement> firstCell;
nsCOMPtr<nsIDOMRange> range;
rv = GetFirstSelectedCell(getter_AddRefs(range), getter_AddRefs(firstCell));
NS_ENSURE_SUCCESS(rv, rv);
int32_t rangeCount;
rv = selection->GetRangeCount(&rangeCount);
NS_ENSURE_SUCCESS(rv, rv);
if (firstCell && rangeCount > 1) {
// When > 1 selected cell,
// ignore aNumber and use selected cells
cell = firstCell;
int32_t rowCount, colCount;
rv = GetTableSize(table, &rowCount, &colCount);
NS_ENSURE_SUCCESS(rv, rv);
// Get indexes -- may be different than original cell
rv = GetCellIndexes(cell, &startRowIndex, &startColIndex);
NS_ENSURE_SUCCESS(rv, rv);
// The setCaret object will call AutoSelectionSetterAfterTableEdit in its
// destructor
AutoSelectionSetterAfterTableEdit setCaret(this, table, startRowIndex,
startColIndex, ePreviousColumn,
false);
AutoTransactionsConserveSelection dontChangeSelection(this);
bool checkToDeleteRow = true;
bool checkToDeleteColumn = true;
while (cell) {
bool deleteRow = false;
bool deleteCol = false;
if (checkToDeleteRow) {
// Optimize to delete an entire row
// Clear so we don't repeat AllCellsInRowSelected within the same row
checkToDeleteRow = false;
deleteRow = AllCellsInRowSelected(table, startRowIndex, colCount);
if (deleteRow) {
// First, find the next cell in a different row
// to continue after we delete this row
int32_t nextRow = startRowIndex;
while (nextRow == startRowIndex) {
rv = GetNextSelectedCell(nullptr, getter_AddRefs(cell));
NS_ENSURE_SUCCESS(rv, rv);
if (!cell) {
break;
}
rv = GetCellIndexes(cell, &nextRow, &startColIndex);
NS_ENSURE_SUCCESS(rv, rv);
}
// Delete entire row
rv = DeleteRow(table, startRowIndex);
NS_ENSURE_SUCCESS(rv, rv);
if (cell) {
// For the next cell: Subtract 1 for row we deleted
startRowIndex = nextRow - 1;
// Set true since we know we will look at a new row next
checkToDeleteRow = true;
}
}
}
if (!deleteRow) {
if (checkToDeleteColumn) {
// Optimize to delete an entire column
// Clear this so we don't repeat AllCellsInColSelected within the same Col
checkToDeleteColumn = false;
deleteCol = AllCellsInColumnSelected(table, startColIndex, colCount);
if (deleteCol) {
// First, find the next cell in a different column
// to continue after we delete this column
int32_t nextCol = startColIndex;
while (nextCol == startColIndex) {
rv = GetNextSelectedCell(nullptr, getter_AddRefs(cell));
NS_ENSURE_SUCCESS(rv, rv);
if (!cell) {
break;
}
rv = GetCellIndexes(cell, &startRowIndex, &nextCol);
NS_ENSURE_SUCCESS(rv, rv);
}
// Delete entire Col
rv = DeleteColumn(table, startColIndex);
NS_ENSURE_SUCCESS(rv, rv);
if (cell) {
// For the next cell, subtract 1 for col. deleted
startColIndex = nextCol - 1;
// Set true since we know we will look at a new column next
checkToDeleteColumn = true;
}
}
}
if (!deleteCol) {
// First get the next cell to delete
nsCOMPtr<nsIDOMElement> nextCell;
rv = GetNextSelectedCell(getter_AddRefs(range),
getter_AddRefs(nextCell));
NS_ENSURE_SUCCESS(rv, rv);
// Then delete the cell
rv = DeleteNode(cell);
NS_ENSURE_SUCCESS(rv, rv);
// The next cell to delete
cell = nextCell;
if (cell) {
rv = GetCellIndexes(cell, &startRowIndex, &startColIndex);
NS_ENSURE_SUCCESS(rv, rv);
}
}
}
}
} else {
for (int32_t i = 0; i < aNumber; i++) {
rv = GetCellContext(getter_AddRefs(selection),
getter_AddRefs(table),
getter_AddRefs(cell),
nullptr, nullptr,
&startRowIndex, &startColIndex);
NS_ENSURE_SUCCESS(rv, rv);
// Don't fail if no cell found
NS_ENSURE_TRUE(cell, NS_SUCCESS_EDITOR_ELEMENT_NOT_FOUND);
if (GetNumberOfCellsInRow(table, startRowIndex) == 1) {
nsCOMPtr<nsIDOMElement> parentRow;
rv = GetElementOrParentByTagName(NS_LITERAL_STRING("tr"), cell,
getter_AddRefs(parentRow));
NS_ENSURE_SUCCESS(rv, rv);
NS_ENSURE_TRUE(parentRow, 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
int32_t rowCount, colCount;
rv = GetTableSize(table, &rowCount, &colCount);
NS_ENSURE_SUCCESS(rv, rv);
if (rowCount == 1) {
return DeleteTable2(table, selection);
}
// We need to call DeleteTableRow to handle cells with rowspan
rv = DeleteTableRow(1);
NS_ENSURE_SUCCESS(rv, rv);
} else {
// More than 1 cell in the row
// The setCaret object will call AutoSelectionSetterAfterTableEdit in its
// destructor
AutoSelectionSetterAfterTableEdit setCaret(this, table, startRowIndex,
startColIndex, ePreviousColumn,
false);
AutoTransactionsConserveSelection dontChangeSelection(this);
rv = DeleteNode(cell);
// If we fail, don't try to delete any more cells???
NS_ENSURE_SUCCESS(rv, rv);
}
}
}
return NS_OK;
}
NS_IMETHODIMP
HTMLEditor::DeleteTableCellContents()
{
RefPtr<Selection> selection;
nsCOMPtr<nsIDOMElement> table;
nsCOMPtr<nsIDOMElement> cell;
int32_t startRowIndex, startColIndex;
nsresult rv = GetCellContext(getter_AddRefs(selection),
getter_AddRefs(table),
getter_AddRefs(cell),
nullptr, nullptr,
&startRowIndex, &startColIndex);
NS_ENSURE_SUCCESS(rv, rv);
// Don't fail if no cell found
NS_ENSURE_TRUE(cell, NS_SUCCESS_EDITOR_ELEMENT_NOT_FOUND);
AutoEditBatch beginBatching(this);
// Prevent rules testing until we're done
AutoRules beginRulesSniffing(this, EditAction::deleteNode, nsIEditor::eNext);
//Don't let Rules System change the selection
AutoTransactionsConserveSelection dontChangeSelection(this);
nsCOMPtr<nsIDOMElement> firstCell;
nsCOMPtr<nsIDOMRange> range;
rv = GetFirstSelectedCell(getter_AddRefs(range), getter_AddRefs(firstCell));
NS_ENSURE_SUCCESS(rv, rv);
if (firstCell) {
cell = firstCell;
rv = GetCellIndexes(cell, &startRowIndex, &startColIndex);
NS_ENSURE_SUCCESS(rv, rv);
}
AutoSelectionSetterAfterTableEdit setCaret(this, table, startRowIndex,
startColIndex, ePreviousColumn,
false);
while (cell) {
DeleteCellContents(cell);
if (firstCell) {
// We doing a selected cells, so do all of them
rv = GetNextSelectedCell(nullptr, getter_AddRefs(cell));
NS_ENSURE_SUCCESS(rv, rv);
} else {
cell = nullptr;
}
}
return NS_OK;
}
NS_IMETHODIMP
HTMLEditor::DeleteCellContents(nsIDOMElement* aCell)
{
NS_ENSURE_TRUE(aCell, NS_ERROR_NULL_POINTER);
// Prevent rules testing until we're done
AutoRules beginRulesSniffing(this, EditAction::deleteNode, nsIEditor::eNext);
nsCOMPtr<nsIDOMNode> child;
bool hasChild;
aCell->HasChildNodes(&hasChild);
while (hasChild) {
aCell->GetLastChild(getter_AddRefs(child));
nsresult rv = DeleteNode(child);
NS_ENSURE_SUCCESS(rv, rv);
aCell->HasChildNodes(&hasChild);
}
return NS_OK;
}
NS_IMETHODIMP
HTMLEditor::DeleteTableColumn(int32_t aNumber)
{