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gecko-dev/editor/libeditor/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)
{
RefPtr<Selection> selection;
nsCOMPtr<nsIDOMElement> table;
nsCOMPtr<nsIDOMElement> cell;
int32_t startRowIndex, startColIndex, rowCount, colCount;
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(table && cell, NS_SUCCESS_EDITOR_ELEMENT_NOT_FOUND);
rv = GetTableSize(table, &rowCount, &colCount);
NS_ENSURE_SUCCESS(rv, rv);
// Shortcut the case of deleting all columns in table
if (!startColIndex && aNumber >= colCount) {
return DeleteTable2(table, selection);
}
// Check for counts too high
aNumber = std::min(aNumber,(colCount-startColIndex));
AutoEditBatch beginBatching(this);
// Prevent rules testing until we're done
AutoRules beginRulesSniffing(this, EditAction::deleteNode, nsIEditor::eNext);
// Test if deletion is controlled by selected cells
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) {
// Fetch indexes again - may be different for selected cells
rv = GetCellIndexes(firstCell, &startRowIndex, &startColIndex);
NS_ENSURE_SUCCESS(rv, rv);
}
//We control selection resetting after the insert...
AutoSelectionSetterAfterTableEdit setCaret(this, table, startRowIndex,
startColIndex, ePreviousRow,
false);
if (firstCell && rangeCount > 1) {
// Use selected cells to determine what rows to delete
cell = firstCell;
while (cell) {
if (cell != firstCell) {
rv = GetCellIndexes(cell, &startRowIndex, &startColIndex);
NS_ENSURE_SUCCESS(rv, rv);
}
// Find the next cell in a different column
// to continue after we delete this column
int32_t nextCol = startColIndex;
while (nextCol == startColIndex) {
rv = GetNextSelectedCell(getter_AddRefs(range), getter_AddRefs(cell));
NS_ENSURE_SUCCESS(rv, rv);
if (!cell) {
break;
}
rv = GetCellIndexes(cell, &startRowIndex, &nextCol);
NS_ENSURE_SUCCESS(rv, rv);
}
rv = DeleteColumn(table, startColIndex);
NS_ENSURE_SUCCESS(rv, rv);
}
} else {
for (int32_t i = 0; i < aNumber; i++) {
rv = DeleteColumn(table, startColIndex);
NS_ENSURE_SUCCESS(rv, rv);
}
}
return NS_OK;
}
NS_IMETHODIMP
HTMLEditor::DeleteColumn(nsIDOMElement* aTable,
int32_t aColIndex)
{
NS_ENSURE_TRUE(aTable, NS_ERROR_NULL_POINTER);
nsCOMPtr<nsIDOMElement> cell;
int32_t startRowIndex, startColIndex, rowSpan, colSpan, actualRowSpan, actualColSpan;
bool isSelected;
int32_t rowIndex = 0;
do {
nsresult rv =
GetCellDataAt(aTable, rowIndex, aColIndex, getter_AddRefs(cell),
&startRowIndex, &startColIndex, &rowSpan, &colSpan,
&actualRowSpan, &actualColSpan, &isSelected);
NS_ENSURE_SUCCESS(rv, rv);
if (cell) {
// Find cells that don't start in column we are deleting
if (startColIndex < aColIndex || colSpan > 1 || !colSpan) {
// 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(cell, colSpan-1);
}
if (startColIndex == aColIndex) {
// Cell is in column to be deleted, but must have colspan > 1,
// so delete contents of cell instead of cell itself
// (We must have reset colspan above)
DeleteCellContents(cell);
}
// To next cell in column
rowIndex += actualRowSpan;
} else {
// Delete the cell
if (GetNumberOfCellsInRow(aTable, rowIndex) == 1) {
// Only 1 cell in row - delete the row
nsCOMPtr<nsIDOMElement> parentRow;
rv = GetElementOrParentByTagName(NS_LITERAL_STRING("tr"), cell,
getter_AddRefs(parentRow));
NS_ENSURE_SUCCESS(rv, rv);
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)
int32_t rowCount, colCount;
rv = GetTableSize(aTable, &rowCount, &colCount);
NS_ENSURE_SUCCESS(rv, rv);
if (rowCount == 1) {
RefPtr<Selection> selection = GetSelection();
NS_ENSURE_TRUE(selection, NS_ERROR_FAILURE);
return DeleteTable2(aTable, selection);
}
// Delete the row by placing caret in cell we were to delete
// We need to call DeleteTableRow to handle cells with rowspan
rv = DeleteRow(aTable, startRowIndex);
NS_ENSURE_SUCCESS(rv, rv);
// Note that we don't incremenet rowIndex
// since a row was deleted and "next"
// row now has current rowIndex
} else {
// A more "normal" deletion
rv = DeleteNode(cell);
NS_ENSURE_SUCCESS(rv, rv);
//Skip over any rows spanned by this cell
rowIndex += actualRowSpan;
}
}
}
} while (cell);
return NS_OK;
}
NS_IMETHODIMP
HTMLEditor::DeleteTableRow(int32_t aNumber)
{
RefPtr<Selection> selection;
nsCOMPtr<nsIDOMElement> table;
nsCOMPtr<nsIDOMElement> cell;
int32_t startRowIndex, startColIndex;
int32_t rowCount, colCount;
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);
rv = GetTableSize(table, &rowCount, &colCount);
NS_ENSURE_SUCCESS(rv, rv);
// Shortcut the case of deleting all rows in table
if (!startRowIndex && aNumber >= rowCount) {
return DeleteTable2(table, selection);
}
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) {
// Fetch indexes again - may be different for selected cells
rv = GetCellIndexes(firstCell, &startRowIndex, &startColIndex);
NS_ENSURE_SUCCESS(rv, rv);
}
//We control selection resetting after the insert...
AutoSelectionSetterAfterTableEdit setCaret(this, table, startRowIndex,
startColIndex, ePreviousRow,
false);
// Don't change selection during deletions
AutoTransactionsConserveSelection dontChangeSelection(this);
if (firstCell && rangeCount > 1) {
// Use selected cells to determine what rows to delete
cell = firstCell;
while (cell) {
if (cell != firstCell) {
rv = GetCellIndexes(cell, &startRowIndex, &startColIndex);
NS_ENSURE_SUCCESS(rv, rv);
}
// Find the next cell in a different row
// to continue after we delete this row
int32_t nextRow = startRowIndex;
while (nextRow == startRowIndex) {
rv = GetNextSelectedCell(getter_AddRefs(range), 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);
}
} else {
// Check for counts too high
aNumber = std::min(aNumber,(rowCount-startRowIndex));
for (int32_t i = 0; i < aNumber; i++) {
rv = DeleteRow(table, startRowIndex);
// If failed in current row, try the next
if (NS_FAILED(rv)) {
startRowIndex++;
}
// Check if there's a cell in the "next" row
rv = GetCellAt(table, startRowIndex, startColIndex, getter_AddRefs(cell));
NS_ENSURE_SUCCESS(rv, rv);
if (!cell) {
break;
}
}
}
return NS_OK;
}
// Helper that doesn't batch or change the selection
NS_IMETHODIMP
HTMLEditor::DeleteRow(nsIDOMElement* aTable,
int32_t aRowIndex)
{
NS_ENSURE_TRUE(aTable, NS_ERROR_NULL_POINTER);
nsCOMPtr<nsIDOMElement> cell;
nsCOMPtr<nsIDOMElement> cellInDeleteRow;
int32_t startRowIndex, startColIndex, rowSpan, colSpan, actualRowSpan, actualColSpan;
bool isSelected;
int32_t colIndex = 0;
// Prevent rules testing until we're done
AutoRules beginRulesSniffing(this, EditAction::deleteNode, nsIEditor::eNext);
// The list of cells we will change rowspan in
// and the new rowspan values for each
nsTArray<nsCOMPtr<nsIDOMElement> > spanCellList;
nsTArray<int32_t> newSpanList;
int32_t rowCount, colCount;
nsresult rv = GetTableSize(aTable, &rowCount, &colCount);
NS_ENSURE_SUCCESS(rv, rv);
// Scan through cells in row to do rowspan adjustments
// Note that after we delete row, startRowIndex will point to the
// cells in the next row to be deleted
do {
if (aRowIndex >= rowCount || colIndex >= colCount) {
break;
}
rv = GetCellDataAt(aTable, aRowIndex, colIndex, getter_AddRefs(cell),
&startRowIndex, &startColIndex, &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(rv)) {
return rv;
}
// Compensate for cells that don't start or extend below the row we are deleting
if (cell) {
if (startRowIndex < aRowIndex) {
// Cell starts in row above us
// 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) {
// Build list of cells to change rowspan
// We can't do it now since it upsets cell map,
// so we will do it after deleting the row
spanCellList.AppendElement(cell);
newSpanList.AppendElement(std::max((aRowIndex - startRowIndex), actualRowSpan-1));
}
} else {
if (rowSpan > 1) {
// Cell spans below row to delete, so we must insert new cells to
// keep rows below. Note that we test "rowSpan" so we don't do this
// if rowSpan = 0 (automatic readjustment).
int32_t aboveRowToInsertNewCellInto = aRowIndex - startRowIndex + 1;
int32_t numOfRawSpanRemainingBelow = actualRowSpan - 1;
rv = SplitCellIntoRows(aTable, startRowIndex, startColIndex,
aboveRowToInsertNewCellInto,
numOfRawSpanRemainingBelow, nullptr);
NS_ENSURE_SUCCESS(rv, rv);
}
if (!cellInDeleteRow) {
cellInDeleteRow = cell; // Reference cell to find row to delete
}
}
// Skip over other columns spanned by this cell
colIndex += actualColSpan;
}
} while (cell);
// Things are messed up if we didn't find a cell in the row!
NS_ENSURE_TRUE(cellInDeleteRow, NS_ERROR_FAILURE);
// Delete the entire row
nsCOMPtr<nsIDOMElement> parentRow;
rv = GetElementOrParentByTagName(NS_LITERAL_STRING("tr"), cellInDeleteRow,
getter_AddRefs(parentRow));
NS_ENSURE_SUCCESS(rv, rv);
if (parentRow) {
rv = DeleteNode(parentRow);
NS_ENSURE_SUCCESS(rv, rv);
}
// Now we can set new rowspans for cells stored above
for (uint32_t i = 0, n = spanCellList.Length(); i < n; i++) {
nsIDOMElement *cellPtr = spanCellList[i];
if (cellPtr) {
rv = SetRowSpan(cellPtr, newSpanList[i]);
NS_ENSURE_SUCCESS(rv, rv);
}
}
return NS_OK;
}
NS_IMETHODIMP
HTMLEditor::SelectTable()
{
nsCOMPtr<nsIDOMElement> table;
nsresult rv = GetElementOrParentByTagName(NS_LITERAL_STRING("table"), nullptr,
getter_AddRefs(table));
NS_ENSURE_SUCCESS(rv, rv);
// Don't fail if we didn't find a table
NS_ENSURE_TRUE(table, NS_OK);
rv = ClearSelection();
if (NS_FAILED(rv)) {
return rv;
}
return AppendNodeToSelectionAsRange(table);
}
NS_IMETHODIMP
HTMLEditor::SelectTableCell()
{
nsCOMPtr<nsIDOMElement> cell;
nsresult rv = GetElementOrParentByTagName(NS_LITERAL_STRING("td"), nullptr,
getter_AddRefs(cell));
NS_ENSURE_SUCCESS(rv, rv);
NS_ENSURE_TRUE(cell, NS_SUCCESS_EDITOR_ELEMENT_NOT_FOUND);
rv = ClearSelection();
if (NS_FAILED(rv)) {
return rv;
}
return AppendNodeToSelectionAsRange(cell);
}
NS_IMETHODIMP
HTMLEditor::SelectBlockOfCells(nsIDOMElement* aStartCell,
nsIDOMElement* aEndCell)
{
NS_ENSURE_TRUE(aStartCell && aEndCell, NS_ERROR_NULL_POINTER);
RefPtr<Selection> selection = GetSelection();
NS_ENSURE_TRUE(selection, NS_ERROR_FAILURE);
NS_NAMED_LITERAL_STRING(tableStr, "table");
nsCOMPtr<nsIDOMElement> table;
nsresult rv = GetElementOrParentByTagName(tableStr, aStartCell,
getter_AddRefs(table));
NS_ENSURE_SUCCESS(rv, rv);
NS_ENSURE_TRUE(table, NS_ERROR_FAILURE);
nsCOMPtr<nsIDOMElement> endTable;
rv = GetElementOrParentByTagName(tableStr, aEndCell,
getter_AddRefs(endTable));
NS_ENSURE_SUCCESS(rv, rv);
NS_ENSURE_TRUE(endTable, 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;
}
int32_t startRowIndex, startColIndex, endRowIndex, endColIndex;
// Get starting and ending cells' location in the cellmap
rv = GetCellIndexes(aStartCell, &startRowIndex, &startColIndex);
if (NS_FAILED(rv)) {
return rv;
}
rv = GetCellIndexes(aEndCell, &endRowIndex, &endColIndex);
if (NS_FAILED(rv)) {
return rv;
}
// Suppress nsISelectionListener notification
// until all selection changes are finished
SelectionBatcher selectionBatcher(selection);
// Examine all cell nodes in current selection and
// remove those outside the new block cell region
int32_t minColumn = std::min(startColIndex, endColIndex);
int32_t minRow = std::min(startRowIndex, endRowIndex);
int32_t maxColumn = std::max(startColIndex, endColIndex);
int32_t maxRow = std::max(startRowIndex, endRowIndex);
nsCOMPtr<nsIDOMElement> cell;
int32_t currentRowIndex, currentColIndex;
nsCOMPtr<nsIDOMRange> range;
rv = GetFirstSelectedCell(getter_AddRefs(range), getter_AddRefs(cell));
NS_ENSURE_SUCCESS(rv, rv);
if (rv == NS_SUCCESS_EDITOR_ELEMENT_NOT_FOUND) {
return NS_OK;
}
while (cell) {
rv = GetCellIndexes(cell, &currentRowIndex, &currentColIndex);
NS_ENSURE_SUCCESS(rv, rv);
if (currentRowIndex < maxRow || currentRowIndex > maxRow ||
currentColIndex < maxColumn || currentColIndex > maxColumn) {
selection->RemoveRange(range);
// Since we've removed the range, decrement pointer to next range
mSelectedCellIndex--;
}
rv = GetNextSelectedCell(getter_AddRefs(range), getter_AddRefs(cell));
NS_ENSURE_SUCCESS(rv, rv);
}
int32_t rowSpan, colSpan, actualRowSpan, actualColSpan;
bool isSelected;
for (int32_t row = minRow; row <= maxRow; row++) {
for (int32_t col = minColumn; col <= maxColumn;
col += std::max(actualColSpan, 1)) {
rv = GetCellDataAt(table, row, col, getter_AddRefs(cell),
&currentRowIndex, &currentColIndex,
&rowSpan, &colSpan,
&actualRowSpan, &actualColSpan, &isSelected);
if (NS_FAILED(rv)) {
break;
}
// Skip cells that already selected or are spanned from previous locations
if (!isSelected && cell &&
row == currentRowIndex && col == currentColIndex) {
rv = AppendNodeToSelectionAsRange(cell);
if (NS_FAILED(rv)) {
break;
}
}
}
}
// NS_OK, otherwise, the last failure of GetCellDataAt() or
// AppendNodeToSelectionAsRange().
return rv;
}
NS_IMETHODIMP
HTMLEditor::SelectAllTableCells()
{
nsCOMPtr<nsIDOMElement> cell;
nsresult rv = GetElementOrParentByTagName(NS_LITERAL_STRING("td"), nullptr,
getter_AddRefs(cell));
NS_ENSURE_SUCCESS(rv, rv);
// Don't fail if we didn't find a cell
NS_ENSURE_TRUE(cell, NS_SUCCESS_EDITOR_ELEMENT_NOT_FOUND);
nsCOMPtr<nsIDOMElement> startCell = cell;
// Get parent table
nsCOMPtr<nsIDOMElement> table;
rv = GetElementOrParentByTagName(NS_LITERAL_STRING("table"), cell,
getter_AddRefs(table));
NS_ENSURE_SUCCESS(rv, rv);
if (!table) {
return NS_ERROR_NULL_POINTER;
}
int32_t rowCount, colCount;
rv = GetTableSize(table, &rowCount, &colCount);
NS_ENSURE_SUCCESS(rv, rv);
RefPtr<Selection> selection = GetSelection();
NS_ENSURE_TRUE(selection, NS_ERROR_FAILURE);
// Suppress nsISelectionListener notification
// until all selection changes are finished
SelectionBatcher selectionBatcher(selection);
// It is now safe to clear the selection
// BE SURE TO RESET IT BEFORE LEAVING!
rv = ClearSelection();
// Select all cells in the same column as current cell
bool cellSelected = false;
int32_t rowSpan, colSpan, actualRowSpan, actualColSpan, currentRowIndex, currentColIndex;
bool isSelected;
for (int32_t row = 0; row < rowCount; row++) {
for (int32_t col = 0; col < colCount; col += std::max(actualColSpan, 1)) {
rv = GetCellDataAt(table, row, col, getter_AddRefs(cell),
&currentRowIndex, &currentColIndex,
&rowSpan, &colSpan,
&actualRowSpan, &actualColSpan, &isSelected);
if (NS_FAILED(rv)) {
break;
}
// Skip cells that are spanned from previous rows or columns
if (cell && row == currentRowIndex && col == currentColIndex) {
rv = AppendNodeToSelectionAsRange(cell);
if (NS_FAILED(rv)) {
break;
}
cellSelected = true;
}
}
}
// Safety code to select starting cell if nothing else was selected
if (!cellSelected) {
return AppendNodeToSelectionAsRange(startCell);
}
// NS_OK, otherwise, the error of ClearSelection() when there is no column or
// the last failure of GetCellDataAt() or AppendNodeToSelectionAsRange().
return rv;
}
NS_IMETHODIMP
HTMLEditor::SelectTableRow()
{
nsCOMPtr<nsIDOMElement> cell;
nsresult rv = GetElementOrParentByTagName(NS_LITERAL_STRING("td"), nullptr,
getter_AddRefs(cell));
NS_ENSURE_SUCCESS(rv, rv);
// Don't fail if we didn't find a cell
NS_ENSURE_TRUE(cell, NS_SUCCESS_EDITOR_ELEMENT_NOT_FOUND);
nsCOMPtr<nsIDOMElement> startCell = cell;
// Get table and location of cell:
RefPtr<Selection> selection;
nsCOMPtr<nsIDOMElement> table;
int32_t startRowIndex, startColIndex;
rv = GetCellContext(getter_AddRefs(selection),
getter_AddRefs(table),
getter_AddRefs(cell),
nullptr, nullptr,
&startRowIndex, &startColIndex);
NS_ENSURE_SUCCESS(rv, rv);
NS_ENSURE_TRUE(table, NS_ERROR_FAILURE);
int32_t rowCount, colCount;
rv = GetTableSize(table, &rowCount, &colCount);
NS_ENSURE_SUCCESS(rv, rv);
//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 nsISelectionListener notification
// until all selection changes are finished
SelectionBatcher selectionBatcher(selection);
// It is now safe to clear the selection
// BE SURE TO RESET IT BEFORE LEAVING!
rv = ClearSelection();
// Select all cells in the same row as current cell
bool cellSelected = false;
int32_t rowSpan, colSpan, actualRowSpan, actualColSpan, currentRowIndex, currentColIndex;
bool isSelected;
for (int32_t col = 0; col < colCount; col += std::max(actualColSpan, 1)) {
rv = GetCellDataAt(table, startRowIndex, col, getter_AddRefs(cell),
&currentRowIndex, &currentColIndex, &rowSpan, &colSpan,
&actualRowSpan, &actualColSpan, &isSelected);
if (NS_FAILED(rv)) {
break;
}
// Skip cells that are spanned from previous rows or columns
if (cell && currentRowIndex == startRowIndex && currentColIndex == col) {
rv = AppendNodeToSelectionAsRange(cell);
if (NS_FAILED(rv)) {
break;
}
cellSelected = true;
}
}
// Safety code to select starting cell if nothing else was selected
if (!cellSelected) {
return AppendNodeToSelectionAsRange(startCell);
}
// NS_OK, otherwise, the error of ClearSelection() when there is no column or
// the last failure of GetCellDataAt() or AppendNodeToSelectionAsRange().
return rv;
}
NS_IMETHODIMP
HTMLEditor::SelectTableColumn()
{
nsCOMPtr<nsIDOMElement> cell;
nsresult rv = GetElementOrParentByTagName(NS_LITERAL_STRING("td"), nullptr,
getter_AddRefs(cell));
NS_ENSURE_SUCCESS(rv, rv);
// Don't fail if we didn't find a cell
NS_ENSURE_TRUE(cell, NS_SUCCESS_EDITOR_ELEMENT_NOT_FOUND);
nsCOMPtr<nsIDOMElement> startCell = cell;
// Get location of cell:
RefPtr<Selection> selection;
nsCOMPtr<nsIDOMElement> table;
int32_t startRowIndex, startColIndex;
rv = GetCellContext(getter_AddRefs(selection),
getter_AddRefs(table),
getter_AddRefs(cell),
nullptr, nullptr,
&startRowIndex, &startColIndex);
NS_ENSURE_SUCCESS(rv, rv);
NS_ENSURE_TRUE(table, NS_ERROR_FAILURE);
int32_t rowCount, colCount;
rv = GetTableSize(table, &rowCount, &colCount);
NS_ENSURE_SUCCESS(rv, rv);
// Suppress nsISelectionListener notification
// until all selection changes are finished
SelectionBatcher selectionBatcher(selection);
// It is now safe to clear the selection
// BE SURE TO RESET IT BEFORE LEAVING!
rv = ClearSelection();
// Select all cells in the same column as current cell
bool cellSelected = false;
int32_t rowSpan, colSpan, actualRowSpan, actualColSpan, currentRowIndex, currentColIndex;
bool isSelected;
for (int32_t row = 0; row < rowCount; row += std::max(actualRowSpan, 1)) {
rv = GetCellDataAt(table, row, startColIndex, getter_AddRefs(cell),
&currentRowIndex, &currentColIndex, &rowSpan, &colSpan,
&actualRowSpan, &actualColSpan, &isSelected);
if (NS_FAILED(rv)) {
break;
}
// Skip cells that are spanned from previous rows or columns
if (cell && currentRowIndex == row && currentColIndex == startColIndex) {
rv = AppendNodeToSelectionAsRange(cell);
if (NS_FAILED(rv)) {
break;
}
cellSelected = true;
}
}
// Safety code to select starting cell if nothing else was selected
if (!cellSelected) {
return AppendNodeToSelectionAsRange(startCell);
}
// NS_OK, otherwise, the error of ClearSelection() when there is no row or
// the last failure of GetCellDataAt() or AppendNodeToSelectionAsRange().
return rv;
}
NS_IMETHODIMP
HTMLEditor::SplitTableCell()
{
nsCOMPtr<nsIDOMElement> table;
nsCOMPtr<nsIDOMElement> cell;
int32_t startRowIndex, startColIndex, actualRowSpan, actualColSpan;
// Get cell, table, etc. at selection anchor node
nsresult rv = GetCellContext(nullptr,
getter_AddRefs(table),
getter_AddRefs(cell),
nullptr, nullptr,
&startRowIndex, &startColIndex);
NS_ENSURE_SUCCESS(rv, rv);
if (!table || !cell) {
return NS_SUCCESS_EDITOR_ELEMENT_NOT_FOUND;
}
// We need rowspan and colspan data
rv = GetCellSpansAt(table, startRowIndex, startColIndex,
actualRowSpan, actualColSpan);
NS_ENSURE_SUCCESS(rv, rv);
// Must have some span to split
if (actualRowSpan <= 1 && actualColSpan <= 1) {
return NS_OK;
}
AutoEditBatch beginBatching(this);
// Prevent auto insertion of BR in new cell until we're done
AutoRules beginRulesSniffing(this, EditAction::insertNode, nsIEditor::eNext);
// We reset selection
AutoSelectionSetterAfterTableEdit setCaret(this, table, startRowIndex,
startColIndex, ePreviousColumn,
false);
//...so suppress Rules System selection munging
AutoTransactionsConserveSelection dontChangeSelection(this);
nsCOMPtr<nsIDOMElement> newCell;
int32_t rowIndex = startRowIndex;
int32_t 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) {
rv = SplitCellIntoRows(table, rowIndex, startColIndex, 1, rowSpanBelow,
getter_AddRefs(newCell));
NS_ENSURE_SUCCESS(rv, rv);
CopyCellBackgroundColor(newCell, cell);
}
int32_t colIndex = startColIndex;
// Now split the cell with rowspan = 1 into cells if it has colSpan > 1
for (colSpanAfter = actualColSpan-1; colSpanAfter > 0; colSpanAfter--) {
rv = SplitCellIntoColumns(table, rowIndex, colIndex, 1, colSpanAfter,
getter_AddRefs(newCell));
NS_ENSURE_SUCCESS(rv, rv);
CopyCellBackgroundColor(newCell, cell);
colIndex++;
}
// Point to the new cell and repeat
rowIndex++;
}
return NS_OK;
}
nsresult
HTMLEditor::CopyCellBackgroundColor(nsIDOMElement* destCell,
nsIDOMElement* sourceCell)
{
NS_ENSURE_TRUE(destCell && sourceCell, NS_ERROR_NULL_POINTER);
// Copy backgournd color to new cell
NS_NAMED_LITERAL_STRING(bgcolor, "bgcolor");
nsAutoString color;
bool isSet;
nsresult rv = GetAttributeValue(sourceCell, bgcolor, color, &isSet);
if (NS_FAILED(rv)) {
return rv;
}
if (!isSet) {
return NS_OK;
}
return SetAttribute(destCell, bgcolor, color);
}
NS_IMETHODIMP
HTMLEditor::SplitCellIntoColumns(nsIDOMElement* aTable,
int32_t aRowIndex,
int32_t aColIndex,
int32_t aColSpanLeft,
int32_t aColSpanRight,
nsIDOMElement** aNewCell)
{
NS_ENSURE_TRUE(aTable, NS_ERROR_NULL_POINTER);
if (aNewCell) {
*aNewCell = nullptr;
}
nsCOMPtr<nsIDOMElement> cell;
int32_t startRowIndex, startColIndex, rowSpan, colSpan, actualRowSpan, actualColSpan;
bool isSelected;
nsresult rv =
GetCellDataAt(aTable, aRowIndex, aColIndex, getter_AddRefs(cell),
&startRowIndex, &startColIndex,
&rowSpan, &colSpan,
&actualRowSpan, &actualColSpan, &isSelected);
NS_ENSURE_SUCCESS(rv, rv);
NS_ENSURE_TRUE(cell, NS_ERROR_NULL_POINTER);
// We can't split!
if (actualColSpan <= 1 || (aColSpanLeft + aColSpanRight) > actualColSpan) {
return NS_OK;
}
// Reduce colspan of cell to split
rv = SetColSpan(cell, aColSpanLeft);
NS_ENSURE_SUCCESS(rv, rv);
// Insert new cell after using the remaining span
// and always get the new cell so we can copy the background color;
nsCOMPtr<nsIDOMElement> newCell;
rv = InsertCell(cell, actualRowSpan, aColSpanRight, true, false,
getter_AddRefs(newCell));
NS_ENSURE_SUCCESS(rv, rv);
if (!newCell) {
return NS_OK;
}
if (aNewCell) {
NS_ADDREF(*aNewCell = newCell.get());
}
return CopyCellBackgroundColor(newCell, cell);
}
NS_IMETHODIMP
HTMLEditor::SplitCellIntoRows(nsIDOMElement* aTable,
int32_t aRowIndex,
int32_t aColIndex,
int32_t aRowSpanAbove,
int32_t aRowSpanBelow,
nsIDOMElement** aNewCell)
{
NS_ENSURE_TRUE(aTable, NS_ERROR_NULL_POINTER);
if (aNewCell) *aNewCell = nullptr;
nsCOMPtr<nsIDOMElement> cell;
int32_t startRowIndex, startColIndex, rowSpan, colSpan, actualRowSpan, actualColSpan;
bool isSelected;
nsresult rv =
GetCellDataAt(aTable, aRowIndex, aColIndex, getter_AddRefs(cell),
&startRowIndex, &startColIndex,
&rowSpan, &colSpan,
&actualRowSpan, &actualColSpan, &isSelected);
NS_ENSURE_SUCCESS(rv, rv);
NS_ENSURE_TRUE(cell, NS_ERROR_NULL_POINTER);
// We can't split!
if (actualRowSpan <= 1 || (aRowSpanAbove + aRowSpanBelow) > actualRowSpan) {
return NS_OK;
}
int32_t rowCount, colCount;
rv = GetTableSize(aTable, &rowCount, &colCount);
NS_ENSURE_SUCCESS(rv, rv);
nsCOMPtr<nsIDOMElement> cell2;
nsCOMPtr<nsIDOMElement> lastCellFound;
int32_t startRowIndex2, startColIndex2, rowSpan2, colSpan2, actualRowSpan2, actualColSpan2;
bool isSelected2;
int32_t colIndex = 0;
bool insertAfter = (startColIndex > 0);
// This is the row we will insert new cell into
int32_t rowBelowIndex = startRowIndex+aRowSpanAbove;
// Find a cell to insert before or after
for (;;) {
// Search for a cell to insert before
rv = 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(rv) || !cell) {
return NS_ERROR_FAILURE;
}
// Skip over cells spanned from above (like the one we are splitting!)
if (cell2 && startRowIndex2 == rowBelowIndex) {
if (!insertAfter) {
// Inserting before, so stop at first cell in row we want to insert
// into.
break;
}
// 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 = false;
break;
}
lastCellFound = cell2;
}
// Skip to next available cellmap location
colIndex += std::max(actualColSpan2, 1);
// Done when past end of total number of columns
if (colIndex > colCount) {
break;
}
}
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 = true; // Should always be true, but let's be sure
}
// Reduce rowspan of cell to split
rv = SetRowSpan(cell, aRowSpanAbove);
NS_ENSURE_SUCCESS(rv, rv);
// Insert new cell after using the remaining span
// and always get the new cell so we can copy the background color;
nsCOMPtr<nsIDOMElement> newCell;
rv = InsertCell(cell2, aRowSpanBelow, actualColSpan, insertAfter, false,
getter_AddRefs(newCell));
NS_ENSURE_SUCCESS(rv, rv);
if (!newCell) {
return NS_OK;
}
if (aNewCell) {
NS_ADDREF(*aNewCell = newCell.get());
}
return CopyCellBackgroundColor(newCell, cell2);
}
NS_IMETHODIMP
HTMLEditor::SwitchTableCellHeaderType(nsIDOMElement* aSourceCell,
nsIDOMElement** aNewCell)
{
nsCOMPtr<Element> sourceCell = do_QueryInterface(aSourceCell);
NS_ENSURE_TRUE(sourceCell, NS_ERROR_NULL_POINTER);
AutoEditBatch beginBatching(this);
// Prevent auto insertion of BR in new cell created by ReplaceContainer
AutoRules beginRulesSniffing(this, EditAction::insertNode, nsIEditor::eNext);
// Save current selection to restore when done
// This is needed so ReplaceContainer can monitor selection
// when replacing nodes
RefPtr<Selection> selection = GetSelection();
NS_ENSURE_TRUE(selection, NS_ERROR_FAILURE);
AutoSelectionRestorer selectionRestorer(selection, this);
// Set to the opposite of current type
nsCOMPtr<nsIAtom> atom = EditorBase::GetTag(aSourceCell);
nsIAtom* newCellType = atom == nsGkAtoms::td ? nsGkAtoms::th : nsGkAtoms::td;
// This creates new node, moves children, copies attributes (true)
// and manages the selection!
nsCOMPtr<Element> newNode = ReplaceContainer(sourceCell, newCellType,
nullptr, nullptr, EditorBase::eCloneAttributes);
NS_ENSURE_TRUE(newNode, NS_ERROR_FAILURE);
// Return the new cell
if (aNewCell) {
nsCOMPtr<nsIDOMElement> newElement = do_QueryInterface(newNode);
*aNewCell = newElement.get();
NS_ADDREF(*aNewCell);
}
return NS_OK;
}
NS_IMETHODIMP
HTMLEditor::JoinTableCells(bool aMergeNonContiguousContents)
{
nsCOMPtr<nsIDOMElement> table;
nsCOMPtr<nsIDOMElement> targetCell;
int32_t startRowIndex, startColIndex, rowSpan, colSpan, actualRowSpan, actualColSpan;
bool isSelected;
nsCOMPtr<nsIDOMElement> cell2;
int32_t startRowIndex2, startColIndex2, rowSpan2, colSpan2, actualRowSpan2, actualColSpan2;
bool isSelected2;
// Get cell, table, etc. at selection anchor node
nsresult rv = GetCellContext(nullptr,
getter_AddRefs(table),
getter_AddRefs(targetCell),
nullptr, nullptr,
&startRowIndex, &startColIndex);
NS_ENSURE_SUCCESS(rv, rv);
if (!table || !targetCell) {
return NS_SUCCESS_EDITOR_ELEMENT_NOT_FOUND;
}
AutoEditBatch beginBatching(this);
//Don't let Rules System change the selection
AutoTransactionsConserveSelection dontChangeSelection(this);
// Note: We dont' use AutoSelectionSetterAfterTableEdit here so the selection
// is retained after joining. This leaves the target cell selected
// as well as the "non-contiguous" cells, so user can see what happened.
nsCOMPtr<nsIDOMElement> firstCell;
int32_t firstRowIndex, firstColIndex;
rv = GetFirstSelectedCellInTable(&firstRowIndex, &firstColIndex,
getter_AddRefs(firstCell));
NS_ENSURE_SUCCESS(rv, rv);
bool joinSelectedCells = false;
if (firstCell) {
nsCOMPtr<nsIDOMElement> secondCell;
rv = GetNextSelectedCell(nullptr, getter_AddRefs(secondCell));
NS_ENSURE_SUCCESS(rv, rv);
// If only one cell is selected, join with cell to the right
joinSelectedCells = (secondCell != nullptr);
}
if (joinSelectedCells) {
// We have selected cells: Join just contiguous cells
// and just merge contents if not contiguous
int32_t rowCount, colCount;
rv = GetTableSize(table, &rowCount, &colCount);
NS_ENSURE_SUCCESS(rv, rv);
// Get spans for cell we will merge into
int32_t firstRowSpan, firstColSpan;
rv = GetCellSpansAt(table, firstRowIndex, firstColIndex,
firstRowSpan, firstColSpan);
NS_ENSURE_SUCCESS(rv, rv);
// 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
int32_t lastRowIndex = firstRowIndex;
int32_t lastColIndex = firstColIndex;
int32_t 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++) {
int32_t currentRowCount = rowCount;
// Be sure each row doesn't have rowspan errors
rv = FixBadRowSpan(table, rowIndex, rowCount);
NS_ENSURE_SUCCESS(rv, rv);
// Adjust rowcount by number of rows we removed
lastRowIndex -= (currentRowCount-rowCount);
bool cellFoundInRow = false;
bool lastRowIsSet = false;
int32_t lastColInRow = 0;
int32_t firstColInRow = firstColIndex;
for (colIndex = firstColIndex; colIndex < colCount;
colIndex += std::max(actualColSpan2, 1)) {
rv = GetCellDataAt(table, rowIndex, colIndex, getter_AddRefs(cell2),
&startRowIndex2, &startColIndex2,
&rowSpan2, &colSpan2,
&actualRowSpan2, &actualColSpan2, &isSelected2);
NS_ENSURE_SUCCESS(rv, rv);
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 = std::max(0,rowIndex - 1);
lastRowIsSet = true;
break;
}
// Save max selected column in this row, including extra colspan
lastColInRow = colIndex + (actualColSpan2-1);
cellFoundInRow = true;
} else if (cellFoundInRow) {
// No cell or not selected, but at least one cell in row was found
if (rowIndex > (firstRowIndex + 1) && colIndex <= lastColIndex) {
// Cell is in a column less than current right border in
// the third or higher selected row, so stop block at the previous row
lastRowIndex = std::max(0,rowIndex - 1);
lastRowIsSet = true;
}
// We're done with this row
break;
}
} // 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 = std::max(0,rowIndex - 1);
} else {
// Go on to examine next row
lastRowIndex = rowIndex+1;
}
}
// Use the minimum col we found so far for right boundary
lastColIndex = std::min(lastColIndex, lastColInRow);
} else {
// No selected cells in this row -- stop at row above
// and leave last column at its previous value
lastRowIndex = std::max(0,rowIndex - 1);
}
}
// The list of cells we will delete after joining
nsTArray<nsCOMPtr<nsIDOMElement> > deleteList;
// 2nd pass: Do the joining and merging
for (rowIndex = 0; rowIndex < rowCount; rowIndex++) {
for (colIndex = 0; colIndex < colCount;
colIndex += std::max(actualColSpan2, 1)) {
rv = GetCellDataAt(table, rowIndex, colIndex, getter_AddRefs(cell2),
&startRowIndex2, &startColIndex2,
&rowSpan2, &colSpan2,
&actualRowSpan2, &actualColSpan2, &isSelected2);
NS_ENSURE_SUCCESS(rv, rv);
// If this is 0, we are past last cell in row, so exit the loop
if (!actualColSpan2) {
break;
}
// 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 (actualColSpan2 > 1) {
//Check if cell "hangs" off the boundary because of colspan > 1
// Use split methods to chop off excess
int32_t extraColSpan = (startColIndex2 + actualColSpan2) - (lastColIndex+1);
if ( extraColSpan > 0) {
rv = SplitCellIntoColumns(table, startRowIndex2, startColIndex2,
actualColSpan2 - extraColSpan,
extraColSpan, nullptr);
NS_ENSURE_SUCCESS(rv, rv);
}
}
rv = MergeCells(firstCell, cell2, false);
NS_ENSURE_SUCCESS(rv, rv);
// Add cell to list to delete
deleteList.AppendElement(cell2.get());
} else if (aMergeNonContiguousContents) {
// Cell is outside join region -- just merge the contents
rv = MergeCells(firstCell, cell2, false);
NS_ENSURE_SUCCESS(rv, rv);
}
}
}
}
// All cell contents are merged. Delete the empty cells we accumulated
// Prevent rules testing until we're done
AutoRules beginRulesSniffing(this, EditAction::deleteNode,
nsIEditor::eNext);
for (uint32_t i = 0, n = deleteList.Length(); i < n; i++) {
nsIDOMElement *elementPtr = deleteList[i];
if (elementPtr) {
nsCOMPtr<nsIDOMNode> node = do_QueryInterface(elementPtr);
rv = DeleteNode(node);
NS_ENSURE_SUCCESS(rv, rv);
}
}
// Cleanup selection: remove ranges where cells were deleted
RefPtr<Selection> selection = GetSelection();
NS_ENSURE_TRUE(selection, NS_ERROR_FAILURE);
int32_t rangeCount;
rv = selection->GetRangeCount(&rangeCount);
NS_ENSURE_SUCCESS(rv, rv);
RefPtr<nsRange> range;
for (int32_t i = 0; i < rangeCount; i++) {
range = selection->GetRangeAt(i);
NS_ENSURE_TRUE(range, NS_ERROR_FAILURE);
nsCOMPtr<nsIDOMElement> deletedCell;
GetCellFromRange(range, getter_AddRefs(deletedCell));
if (!deletedCell) {
selection->RemoveRange(range);
rangeCount--;
i--;
}
}
// Set spans for the cell everthing merged into
rv = SetRowSpan(firstCell, lastRowIndex-firstRowIndex+1);
NS_ENSURE_SUCCESS(rv, rv);
rv = SetColSpan(firstCell, lastColIndex-firstColIndex+1);
NS_ENSURE_SUCCESS(rv, rv);
// Fixup disturbances in table layout
NormalizeTable(table);
} else {
// Joining with cell to the right -- get rowspan and colspan data of target cell
rv = GetCellDataAt(table, startRowIndex, startColIndex,
getter_AddRefs(targetCell),
&startRowIndex, &startColIndex, &rowSpan, &colSpan,
&actualRowSpan, &actualColSpan, &isSelected);
NS_ENSURE_SUCCESS(rv, rv);
NS_ENSURE_TRUE(targetCell, NS_ERROR_NULL_POINTER);
// Get data for cell to the right
rv = GetCellDataAt(table, startRowIndex, startColIndex + actualColSpan,
getter_AddRefs(cell2),
&startRowIndex2, &startColIndex2, &rowSpan2, &colSpan2,
&actualRowSpan2, &actualColSpan2, &isSelected2);
NS_ENSURE_SUCCESS(rv, rv);
if (!cell2) {
return NS_OK; // Don't fail if there's no cell
}
// sanity check
NS_ASSERTION((startRowIndex >= startRowIndex2),"JoinCells: startRowIndex < startRowIndex2");
// Figure out span of merged cell starting from target's starting row
// to handle case of merged cell starting in a row above
int32_t spanAboveMergedCell = startRowIndex - startRowIndex2;
int32_t effectiveRowSpan2 = actualRowSpan2 - spanAboveMergedCell;
if (effectiveRowSpan2 > actualRowSpan) {
// Cell to the right spans into row below target
// Split off portion below target cell's bottom-most row
rv = SplitCellIntoRows(table, startRowIndex2, startColIndex2,
spanAboveMergedCell+actualRowSpan,
effectiveRowSpan2-actualRowSpan, nullptr);
NS_ENSURE_SUCCESS(rv, rv);
}
// Move contents from cell to the right
// Delete the cell now only if it starts in the same row
// and has enough row "height"
rv = MergeCells(targetCell, cell2,
(startRowIndex2 == startRowIndex) &&
(effectiveRowSpan2 >= actualRowSpan));
NS_ENSURE_SUCCESS(rv, rv);
if (effectiveRowSpan2 < actualRowSpan) {
// Merged cell is "shorter"
// (there are cells(s) below it that are row-spanned by target cell)
// We could try splitting those cells, but that's REAL messy,
// so the safest thing to do is NOT really join the cells
return NS_OK;
}
if (spanAboveMergedCell > 0) {
// Cell we merged started in a row above the target cell
// Reduce rowspan to give room where target cell will extend its colspan
rv = SetRowSpan(cell2, spanAboveMergedCell);
NS_ENSURE_SUCCESS(rv, rv);
}
// Reset target cell's colspan to encompass cell to the right
rv = SetColSpan(targetCell, actualColSpan+actualColSpan2);
NS_ENSURE_SUCCESS(rv, rv);
}
return NS_OK;
}
NS_IMETHODIMP
HTMLEditor::MergeCells(nsCOMPtr<nsIDOMElement> aTargetCell,
nsCOMPtr<nsIDOMElement> aCellToMerge,
bool aDeleteCellToMerge)
{
nsCOMPtr<dom::Element> targetCell = do_QueryInterface(aTargetCell);
nsCOMPtr<dom::Element> cellToMerge = do_QueryInterface(aCellToMerge);
NS_ENSURE_TRUE(targetCell && cellToMerge, NS_ERROR_NULL_POINTER);
// Prevent rules testing until we're done
AutoRules beginRulesSniffing(this, EditAction::deleteNode, nsIEditor::eNext);
// Don't need to merge if cell is empty
if (!IsEmptyCell(cellToMerge)) {
// Get index of last child in target cell
// If we fail or don't have children,
// we insert at index 0
int32_t insertIndex = 0;
// Start inserting just after last child
uint32_t len = targetCell->GetChildCount();
if (len == 1 && IsEmptyCell(targetCell)) {
// Delete the empty node
nsIContent* cellChild = targetCell->GetFirstChild();
nsresult rv = DeleteNode(cellChild->AsDOMNode());
NS_ENSURE_SUCCESS(rv, rv);
insertIndex = 0;
} else {
insertIndex = (int32_t)len;
}
// Move the contents
while (cellToMerge->HasChildren()) {
nsCOMPtr<nsIDOMNode> cellChild = cellToMerge->GetLastChild()->AsDOMNode();
nsresult rv = DeleteNode(cellChild);
NS_ENSURE_SUCCESS(rv, rv);
rv = InsertNode(cellChild, aTargetCell, insertIndex);
NS_ENSURE_SUCCESS(rv, rv);
}
}
// Delete cells whose contents were moved
if (aDeleteCellToMerge) {
return DeleteNode(aCellToMerge);
}
return NS_OK;
}
NS_IMETHODIMP
HTMLEditor::FixBadRowSpan(nsIDOMElement* aTable,
int32_t aRowIndex,
int32_t& aNewRowCount)
{
NS_ENSURE_TRUE(aTable, NS_ERROR_NULL_POINTER);
int32_t rowCount, colCount;
nsresult rv = GetTableSize(aTable, &rowCount, &colCount);
NS_ENSURE_SUCCESS(rv, rv);
nsCOMPtr<nsIDOMElement>cell;
int32_t startRowIndex, startColIndex, rowSpan, colSpan, actualRowSpan, actualColSpan;
bool isSelected;
int32_t minRowSpan = -1;
int32_t colIndex;
for (colIndex = 0; colIndex < colCount;
colIndex += std::max(actualColSpan, 1)) {
rv = 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(rv)) {
return rv;
}
if (!cell) {
break;
}
if (rowSpan > 0 &&
startRowIndex == aRowIndex &&
(rowSpan < minRowSpan || minRowSpan == -1)) {
minRowSpan = rowSpan;
}
NS_ASSERTION((actualColSpan > 0),"ActualColSpan = 0 in FixBadRowSpan");
}
if (minRowSpan > 1) {
// The amount to reduce everyone's rowspan
// so at least one cell has rowspan = 1
int32_t rowsReduced = minRowSpan - 1;
for (colIndex = 0; colIndex < colCount;
colIndex += std::max(actualColSpan, 1)) {
rv = GetCellDataAt(aTable, aRowIndex, colIndex, getter_AddRefs(cell),
&startRowIndex, &startColIndex, &rowSpan, &colSpan,
&actualRowSpan, &actualColSpan, &isSelected);
if (NS_FAILED(rv)) {
return rv;
}
// Fixup rowspans only for cells starting in current row
if (cell && rowSpan > 0 &&
startRowIndex == aRowIndex &&
startColIndex == colIndex ) {
rv = SetRowSpan(cell, rowSpan-rowsReduced);
if (NS_FAILED(rv)) {
return rv;
}
}
NS_ASSERTION((actualColSpan > 0),"ActualColSpan = 0 in FixBadRowSpan");
}
}
return GetTableSize(aTable, &aNewRowCount, &colCount);
}
NS_IMETHODIMP
HTMLEditor::FixBadColSpan(nsIDOMElement* aTable,
int32_t aColIndex,
int32_t& aNewColCount)
{
NS_ENSURE_TRUE(aTable, NS_ERROR_NULL_POINTER);
int32_t rowCount, colCount;
nsresult rv = GetTableSize(aTable, &rowCount, &colCount);
NS_ENSURE_SUCCESS(rv, rv);
nsCOMPtr<nsIDOMElement> cell;
int32_t startRowIndex, startColIndex, rowSpan, colSpan, actualRowSpan, actualColSpan;
bool isSelected;
int32_t minColSpan = -1;
int32_t rowIndex;
for (rowIndex = 0; rowIndex < rowCount;
rowIndex += std::max(actualRowSpan, 1)) {
rv = GetCellDataAt(aTable, rowIndex, aColIndex, 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(rv)) {
return rv;
}
if (!cell) {
break;
}
if (colSpan > 0 &&
startColIndex == aColIndex &&
(colSpan < minColSpan || minColSpan == -1)) {
minColSpan = colSpan;
}
NS_ASSERTION((actualRowSpan > 0),"ActualRowSpan = 0 in FixBadColSpan");
}
if (minColSpan > 1) {
// The amount to reduce everyone's colspan
// so at least one cell has colspan = 1
int32_t colsReduced = minColSpan - 1;
for (rowIndex = 0; rowIndex < rowCount;
rowIndex += std::max(actualRowSpan, 1)) {
rv = GetCellDataAt(aTable, rowIndex, aColIndex, getter_AddRefs(cell),
&startRowIndex, &startColIndex, &rowSpan, &colSpan,
&actualRowSpan, &actualColSpan, &isSelected);
if (NS_FAILED(rv)) {
return rv;
}
// Fixup colspans only for cells starting in current column
if (cell && colSpan > 0 &&
startColIndex == aColIndex &&
startRowIndex == rowIndex) {
rv = SetColSpan(cell, colSpan-colsReduced);
if (NS_FAILED(rv)) {
return rv;
}
}
NS_ASSERTION((actualRowSpan > 0),"ActualRowSpan = 0 in FixBadColSpan");
}
}
return GetTableSize(aTable, &rowCount, &aNewColCount);
}
NS_IMETHODIMP
HTMLEditor::NormalizeTable(nsIDOMElement* aTable)
{
RefPtr<Selection> selection = GetSelection();
NS_ENSURE_TRUE(selection, NS_ERROR_FAILURE);
nsCOMPtr<nsIDOMElement> table;
nsresult rv = GetElementOrParentByTagName(NS_LITERAL_STRING("table"),
aTable, getter_AddRefs(table));
NS_ENSURE_SUCCESS(rv, rv);
// Don't fail if we didn't find a table
NS_ENSURE_TRUE(table, NS_OK);
int32_t rowCount, colCount, rowIndex, colIndex;
rv = GetTableSize(table, &rowCount, &colCount);
NS_ENSURE_SUCCESS(rv, rv);
// Save current selection
AutoSelectionRestorer selectionRestorer(selection, this);
AutoEditBatch beginBatching(this);
// Prevent auto insertion of BR in new cell until we're done
AutoRules beginRulesSniffing(this, EditAction::insertNode, nsIEditor::eNext);
nsCOMPtr<nsIDOMElement> cell;
int32_t startRowIndex, startColIndex, rowSpan, colSpan, actualRowSpan, actualColSpan;
bool isSelected;
// Scan all cells in each row to detect bad rowspan values
for (rowIndex = 0; rowIndex < rowCount; rowIndex++) {
rv = FixBadRowSpan(table, rowIndex, rowCount);
NS_ENSURE_SUCCESS(rv, rv);
}
// and same for colspans
for (colIndex = 0; colIndex < colCount; colIndex++) {
rv = FixBadColSpan(table, colIndex, colCount);
NS_ENSURE_SUCCESS(rv, rv);
}
// Fill in missing cellmap locations with empty cells
for (rowIndex = 0; rowIndex < rowCount; rowIndex++) {
nsCOMPtr<nsIDOMElement> previousCellInRow;
for (colIndex = 0; colIndex < colCount; colIndex++) {
rv = GetCellDataAt(table, 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(rv)) {
return rv;
}
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) {
// 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;
}
// Insert a new cell after (true), and return the new cell to us
rv = InsertCell(previousCellInRow, 1, 1, true, false,
getter_AddRefs(cell));
NS_ENSURE_SUCCESS(rv, rv);
// Set this so we use returned new "cell" to set previousCellInRow below
if (cell) {
startRowIndex = rowIndex;
}
}
// Save the last cell found in the same row we are scanning
if (startRowIndex == rowIndex) {
previousCellInRow = cell;
}
}
}
return NS_OK;
}
NS_IMETHODIMP
HTMLEditor::GetCellIndexes(nsIDOMElement* aCell,
int32_t* aRowIndex,
int32_t* aColIndex)
{
NS_ENSURE_ARG_POINTER(aRowIndex);
*aColIndex=0; // initialize out params
NS_ENSURE_ARG_POINTER(aColIndex);
*aRowIndex=0;
if (!aCell) {
// Get the selected cell or the cell enclosing the selection anchor
nsCOMPtr<nsIDOMElement> cell;
nsresult rv = GetElementOrParentByTagName(NS_LITERAL_STRING("td"), nullptr,
getter_AddRefs(cell));
if (NS_FAILED(rv) || !cell) {
return NS_ERROR_FAILURE;
}
aCell = cell;
}
NS_ENSURE_TRUE(mDocWeak, NS_ERROR_NOT_INITIALIZED);
nsCOMPtr<nsIPresShell> ps = GetPresShell();
NS_ENSURE_TRUE(ps, NS_ERROR_NOT_INITIALIZED);
nsCOMPtr<nsIContent> nodeAsContent( do_QueryInterface(aCell) );
NS_ENSURE_TRUE(nodeAsContent, NS_ERROR_FAILURE);
// frames are not ref counted, so don't use an nsCOMPtr
nsIFrame *layoutObject = nodeAsContent->GetPrimaryFrame();
NS_ENSURE_TRUE(layoutObject, NS_ERROR_FAILURE);
nsITableCellLayout *cellLayoutObject = do_QueryFrame(layoutObject);
NS_ENSURE_TRUE(cellLayoutObject, NS_ERROR_FAILURE);
return cellLayoutObject->GetCellIndexes(*aRowIndex, *aColIndex);
}
nsTableWrapperFrame*
HTMLEditor::GetTableFrame(nsIDOMElement* aTable)
{
NS_ENSURE_TRUE(aTable, nullptr);
nsCOMPtr<nsIContent> nodeAsContent( do_QueryInterface(aTable) );
NS_ENSURE_TRUE(nodeAsContent, nullptr);
return do_QueryFrame(nodeAsContent->GetPrimaryFrame());
}
//Return actual number of cells (a cell with colspan > 1 counts as just 1)
int32_t
HTMLEditor::GetNumberOfCellsInRow(nsIDOMElement* aTable,
int32_t rowIndex)
{
int32_t cellCount = 0;
nsCOMPtr<nsIDOMElement> cell;
int32_t colIndex = 0;
do {
int32_t startRowIndex, startColIndex, rowSpan, colSpan, actualRowSpan, actualColSpan;
bool isSelected;
nsresult rv =
GetCellDataAt(aTable, rowIndex, colIndex, getter_AddRefs(cell),
&startRowIndex, &startColIndex, &rowSpan, &colSpan,
&actualRowSpan, &actualColSpan, &isSelected);
NS_ENSURE_SUCCESS(rv, 0);
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;
}
NS_IMETHODIMP
HTMLEditor::GetTableSize(nsIDOMElement* aTable,
int32_t* aRowCount,
int32_t* aColCount)
{
NS_ENSURE_ARG_POINTER(aRowCount);
NS_ENSURE_ARG_POINTER(aColCount);
*aRowCount = 0;
*aColCount = 0;
nsCOMPtr<nsIDOMElement> table;
// Get the selected talbe or the table enclosing the selection anchor
nsresult rv = GetElementOrParentByTagName(NS_LITERAL_STRING("table"), aTable,
getter_AddRefs(table));
NS_ENSURE_SUCCESS(rv, rv);
NS_ENSURE_TRUE(table, NS_ERROR_FAILURE);
nsTableWrapperFrame* tableFrame = GetTableFrame(table.get());
NS_ENSURE_TRUE(tableFrame, NS_ERROR_FAILURE);
*aRowCount = tableFrame->GetRowCount();
*aColCount = tableFrame->GetColCount();
return NS_OK;
}
NS_IMETHODIMP
HTMLEditor::GetCellDataAt(nsIDOMElement* aTable,
int32_t aRowIndex,
int32_t aColIndex,
nsIDOMElement** aCell,
int32_t* aStartRowIndex,
int32_t* aStartColIndex,
int32_t* aRowSpan,
int32_t* aColSpan,
int32_t* aActualRowSpan,
int32_t* aActualColSpan,
bool* aIsSelected)
{
NS_ENSURE_ARG_POINTER(aStartRowIndex);
NS_ENSURE_ARG_POINTER(aStartColIndex);
NS_ENSURE_ARG_POINTER(aRowSpan);
NS_ENSURE_ARG_POINTER(aColSpan);
NS_ENSURE_ARG_POINTER(aActualRowSpan);
NS_ENSURE_ARG_POINTER(aActualColSpan);
NS_ENSURE_ARG_POINTER(aIsSelected);
NS_ENSURE_TRUE(aCell, NS_ERROR_NULL_POINTER);
*aStartRowIndex = 0;
*aStartColIndex = 0;
*aRowSpan = 0;
*aColSpan = 0;
*aActualRowSpan = 0;
*aActualColSpan = 0;
*aIsSelected = false;
*aCell = nullptr;
if (!aTable) {
// Get the selected table or the table enclosing the selection anchor
nsCOMPtr<nsIDOMElement> table;
nsresult rv =
GetElementOrParentByTagName(NS_LITERAL_STRING("table"), nullptr,
getter_AddRefs(table));
NS_ENSURE_SUCCESS(rv, rv);
if (!table) {
return NS_ERROR_FAILURE;
}
aTable = table;
}
nsTableWrapperFrame* tableFrame = GetTableFrame(aTable);
NS_ENSURE_TRUE(tableFrame, NS_ERROR_FAILURE);
nsTableCellFrame* cellFrame =
tableFrame->GetCellFrameAt(aRowIndex, aColIndex);
if (!cellFrame) {
return NS_ERROR_FAILURE;
}
*aIsSelected = cellFrame->IsSelected();
cellFrame->GetRowIndex(*aStartRowIndex);
cellFrame->GetColIndex(*aStartColIndex);
*aRowSpan = cellFrame->GetRowSpan();
*aColSpan = cellFrame->GetColSpan();
*aActualRowSpan = tableFrame->GetEffectiveRowSpanAt(aRowIndex, aColIndex);
*aActualColSpan = tableFrame->GetEffectiveColSpanAt(aRowIndex, aColIndex);
nsCOMPtr<nsIDOMElement> domCell = do_QueryInterface(cellFrame->GetContent());
domCell.forget(aCell);
return NS_OK;
}
// When all you want is the cell
NS_IMETHODIMP
HTMLEditor::GetCellAt(nsIDOMElement* aTable,
int32_t aRowIndex,
int32_t aColIndex,
nsIDOMElement** aCell)
{
NS_ENSURE_ARG_POINTER(aCell);
*aCell = nullptr;
if (!aTable) {
// Get the selected table or the table enclosing the selection anchor
nsCOMPtr<nsIDOMElement> table;
nsresult rv =
GetElementOrParentByTagName(NS_LITERAL_STRING("table"), nullptr,
getter_AddRefs(table));
NS_ENSURE_SUCCESS(rv, rv);
NS_ENSURE_TRUE(table, NS_ERROR_FAILURE);
aTable = table;
}
nsTableWrapperFrame* tableFrame = GetTableFrame(aTable);
if (!tableFrame) {
*aCell = nullptr;
return NS_SUCCESS_EDITOR_ELEMENT_NOT_FOUND;
}
nsCOMPtr<nsIDOMElement> domCell =
do_QueryInterface(tableFrame->GetCellAt(aRowIndex, aColIndex));
domCell.forget(aCell);
return NS_OK;
}
// When all you want are the rowspan and colspan (not exposed in nsITableEditor)
NS_IMETHODIMP
HTMLEditor::GetCellSpansAt(nsIDOMElement* aTable,
int32_t aRowIndex,
int32_t aColIndex,
int32_t& aActualRowSpan,
int32_t& aActualColSpan)
{
nsTableWrapperFrame* tableFrame = GetTableFrame(aTable);
if (!tableFrame) {
return NS_ERROR_FAILURE;
}
aActualRowSpan = tableFrame->GetEffectiveRowSpanAt(aRowIndex, aColIndex);
aActualColSpan = tableFrame->GetEffectiveColSpanAt(aRowIndex, aColIndex);
return NS_OK;
}
nsresult
HTMLEditor::GetCellContext(Selection** aSelection,
nsIDOMElement** aTable,
nsIDOMElement** aCell,
nsIDOMNode** aCellParent,
int32_t* aCellOffset,
int32_t* aRowIndex,
int32_t* aColIndex)
{
// Initialize return pointers
if (aSelection) {
*aSelection = nullptr;
}
if (aTable) {
*aTable = nullptr;
}
if (aCell) {
*aCell = nullptr;
}
if (aCellParent) {
*aCellParent = nullptr;
}
if (aCellOffset) {
*aCellOffset = 0;
}
if (aRowIndex) {
*aRowIndex = 0;
}
if (aColIndex) {
*aColIndex = 0;
}
RefPtr<Selection> selection = GetSelection();
NS_ENSURE_TRUE(selection, 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) {
// Find a selected or enclosing table element
nsCOMPtr<nsIDOMElement> cellOrTableElement;
int32_t selectedCount;
nsAutoString tagName;
nsresult rv =
GetSelectedOrParentTableElement(tagName, &selectedCount,
getter_AddRefs(cellOrTableElement));
NS_ENSURE_SUCCESS(rv, rv);
if (tagName.EqualsLiteral("table")) {
// We have a selected table, not a cell
if (aTable) {
*aTable = cellOrTableElement.get();
NS_ADDREF(*aTable);
}
return NS_OK;
}
if (!tagName.EqualsLiteral("td")) {
return NS_SUCCESS_EDITOR_ELEMENT_NOT_FOUND;
}
// We found a cell
cell = cellOrTableElement;
}
if (aCell) {
*aCell = cell.get();
NS_ADDREF(*aCell);
}
// Get containing table
nsresult rv = GetElementOrParentByTagName(NS_LITERAL_STRING("table"), cell,
getter_AddRefs(table));
NS_ENSURE_SUCCESS(rv, rv);
// Cell must be in a table, so fail if not found
NS_ENSURE_TRUE(table, NS_ERROR_FAILURE);
if (aTable) {
*aTable = table.get();
NS_ADDREF(*aTable);
}
// Get the rest of the related data only if requested
if (aRowIndex || aColIndex) {
int32_t rowIndex, colIndex;
// Get current cell location so we can put caret back there when done
rv = GetCellIndexes(cell, &rowIndex, &colIndex);
if (NS_FAILED(rv)) {
return rv;
}
if (aRowIndex) {
*aRowIndex = rowIndex;
}
if (aColIndex) {
*aColIndex = colIndex;
}
}
if (aCellParent) {
nsCOMPtr <nsIDOMNode> cellParent;
// Get the immediate parent of the cell
rv = cell->GetParentNode(getter_AddRefs(cellParent));
NS_ENSURE_SUCCESS(rv, rv);
// Cell has to have a parent, so fail if not found
NS_ENSURE_TRUE(cellParent, NS_ERROR_FAILURE);
*aCellParent = cellParent.get();
NS_ADDREF(*aCellParent);
if (aCellOffset) {
*aCellOffset = GetChildOffset(cell, cellParent);
}
}
return NS_OK;
}
nsresult
HTMLEditor::GetCellFromRange(nsRange* aRange,
nsIDOMElement** aCell)
{
// Note: this might return a node that is outside of the range.
// Use carefully.
NS_ENSURE_TRUE(aRange && aCell, NS_ERROR_NULL_POINTER);
*aCell = nullptr;
nsCOMPtr<nsIDOMNode> startParent;
nsresult rv = aRange->GetStartContainer(getter_AddRefs(startParent));
NS_ENSURE_SUCCESS(rv, rv);
NS_ENSURE_TRUE(startParent, NS_ERROR_FAILURE);
int32_t startOffset;
rv = aRange->GetStartOffset(&startOffset);
NS_ENSURE_SUCCESS(rv, rv);
nsCOMPtr<nsIDOMNode> childNode = GetChildAt(startParent, startOffset);
// This means selection is probably at a text node (or end of doc?)
if (!childNode) {
return NS_ERROR_FAILURE;
}
nsCOMPtr<nsIDOMNode> endParent;
rv = aRange->GetEndContainer(getter_AddRefs(endParent));
NS_ENSURE_SUCCESS(rv, rv);
NS_ENSURE_TRUE(startParent, NS_ERROR_FAILURE);
int32_t endOffset;
rv = aRange->GetEndOffset(&endOffset);
NS_ENSURE_SUCCESS(rv, rv);
// If a cell is deleted, the range is collapse
// (startOffset == endOffset)
// so tell caller the cell wasn't found
if (startParent == endParent &&
endOffset == startOffset+1 &&
HTMLEditUtils::IsTableCell(childNode)) {
// Should we also test if frame is selected? (Use GetCellDataAt())
// (Let's not for now -- more efficient)
nsCOMPtr<nsIDOMElement> cellElement = do_QueryInterface(childNode);
*aCell = cellElement.get();
NS_ADDREF(*aCell);
return NS_OK;
}
return NS_SUCCESS_EDITOR_ELEMENT_NOT_FOUND;
}
NS_IMETHODIMP
HTMLEditor::GetFirstSelectedCell(nsIDOMRange** aRange,
nsIDOMElement** aCell)
{
NS_ENSURE_TRUE(aCell, NS_ERROR_NULL_POINTER);
*aCell = nullptr;
if (aRange) {
*aRange = nullptr;
}
RefPtr<Selection> selection = GetSelection();
NS_ENSURE_TRUE(selection, NS_ERROR_FAILURE);
RefPtr<nsRange> range = selection->GetRangeAt(0);
NS_ENSURE_TRUE(range, NS_ERROR_FAILURE);
mSelectedCellIndex = 0;
nsresult rv = GetCellFromRange(range, aCell);
// Failure here probably means selection is in a text node,
// so there's no selected cell
if (NS_FAILED(rv)) {
return NS_SUCCESS_EDITOR_ELEMENT_NOT_FOUND;
}
// No cell means range was collapsed (cell was deleted)
if (!*aCell) {
return NS_SUCCESS_EDITOR_ELEMENT_NOT_FOUND;
}
if (aRange) {
*aRange = range.get();
NS_ADDREF(*aRange);
}
// Setup for next cell
mSelectedCellIndex = 1;
return NS_OK;
}
NS_IMETHODIMP
HTMLEditor::GetNextSelectedCell(nsIDOMRange** aRange,
nsIDOMElement** aCell)
{
NS_ENSURE_TRUE(aCell, NS_ERROR_NULL_POINTER);
*aCell = nullptr;
if (aRange) {
*aRange = nullptr;
}
RefPtr<Selection> selection = GetSelection();
NS_ENSURE_TRUE(selection, NS_ERROR_FAILURE);
int32_t rangeCount = selection->RangeCount();
// Don't even try if index exceeds range count
if (mSelectedCellIndex >= rangeCount) {
return NS_SUCCESS_EDITOR_ELEMENT_NOT_FOUND;
}
// Scan through ranges to find next valid selected cell
RefPtr<nsRange> range;
for (; mSelectedCellIndex < rangeCount; mSelectedCellIndex++) {
range = selection->GetRangeAt(mSelectedCellIndex);
NS_ENSURE_TRUE(range, NS_ERROR_FAILURE);
nsresult rv = GetCellFromRange(range, aCell);
// Failure here means the range doesn't contain a cell
NS_ENSURE_SUCCESS(rv, NS_SUCCESS_EDITOR_ELEMENT_NOT_FOUND);
// We found a selected cell
if (*aCell) {
break;
}
// If we didn't find a cell, continue to next range in selection
}
// No cell means all remaining ranges were collapsed (cells were deleted)
NS_ENSURE_TRUE(*aCell, NS_SUCCESS_EDITOR_ELEMENT_NOT_FOUND);
if (aRange) {
*aRange = range.get();
NS_ADDREF(*aRange);
}
// Setup for next cell
mSelectedCellIndex++;
return NS_OK;
}
NS_IMETHODIMP
HTMLEditor::GetFirstSelectedCellInTable(int32_t* aRowIndex,
int32_t* aColIndex,
nsIDOMElement** aCell)
{
NS_ENSURE_TRUE(aCell, NS_ERROR_NULL_POINTER);
*aCell = nullptr;
if (aRowIndex) {
*aRowIndex = 0;
}
if (aColIndex) {
*aColIndex = 0;
}
nsCOMPtr<nsIDOMElement> cell;
nsresult rv = GetFirstSelectedCell(nullptr, getter_AddRefs(cell));
NS_ENSURE_SUCCESS(rv, rv);
NS_ENSURE_TRUE(cell, NS_SUCCESS_EDITOR_ELEMENT_NOT_FOUND);
*aCell = cell.get();
NS_ADDREF(*aCell);
// Also return the row and/or column if requested
if (aRowIndex || aColIndex) {
int32_t startRowIndex, startColIndex;
rv = GetCellIndexes(cell, &startRowIndex, &startColIndex);
if (NS_FAILED(rv)) {
return rv;
}
if (aRowIndex) {
*aRowIndex = startRowIndex;
}
if (aColIndex) {
*aColIndex = startColIndex;
}
}
return NS_OK;
}
NS_IMETHODIMP
HTMLEditor::SetSelectionAfterTableEdit(nsIDOMElement* aTable,
int32_t aRow,
int32_t aCol,
int32_t aDirection,
bool aSelected)
{
NS_ENSURE_TRUE(aTable, NS_ERROR_NOT_INITIALIZED);
RefPtr<Selection> selection = GetSelection();
if (!selection) {
return NS_ERROR_FAILURE;
}
nsCOMPtr<nsIDOMElement> cell;
bool done = false;
do {
nsresult rv = GetCellAt(aTable, aRow, aCol, getter_AddRefs(cell));
if (NS_FAILED(rv)) {
break;
}
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?
nsCOMPtr<nsINode> cellNode = do_QueryInterface(cell);
if (cellNode) {
CollapseSelectionToDeepestNonTableFirstChild(selection, cellNode);
}
return NS_OK;
}
} 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) {
if (aRow > 0) {
aRow--;
} else {
done = true;
}
} else {
aCol--;
}
break;
case ePreviousRow:
if (!aRow) {
if (aCol > 0) {
aCol--;
} else {
done = true;
}
} else {
aRow--;
}
break;
default:
done = true;
}
}
} while (!done);
// We didn't find a cell
// Set selection to just before the table
nsCOMPtr<nsIDOMNode> tableParent;
nsresult rv = aTable->GetParentNode(getter_AddRefs(tableParent));
if (NS_SUCCEEDED(rv) && tableParent) {
int32_t tableOffset = GetChildOffset(aTable, tableParent);
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
HTMLEditor::GetSelectedOrParentTableElement(nsAString& aTagName,
int32_t* aSelectedCount,
nsIDOMElement** aTableElement)
{
NS_ENSURE_ARG_POINTER(aTableElement);
NS_ENSURE_ARG_POINTER(aSelectedCount);
*aTableElement = nullptr;
aTagName.Truncate();
*aSelectedCount = 0;
RefPtr<Selection> selection = GetSelection();
NS_ENSURE_TRUE(selection, NS_ERROR_FAILURE);
// Try to get the first selected cell
nsCOMPtr<nsIDOMElement> tableOrCellElement;
nsresult rv = GetFirstSelectedCell(nullptr,
getter_AddRefs(tableOrCellElement));
NS_ENSURE_SUCCESS(rv, rv);
NS_NAMED_LITERAL_STRING(tdName, "td");
if (tableOrCellElement) {
// Each cell is in its own selection range,
// so count signals multiple-cell selection
rv = selection->GetRangeCount(aSelectedCount);
NS_ENSURE_SUCCESS(rv, rv);
aTagName = tdName;
} else {
nsCOMPtr<nsIDOMNode> anchorNode;
rv = selection->GetAnchorNode(getter_AddRefs(anchorNode));
if (NS_FAILED(rv)) {
return rv;
}
NS_ENSURE_TRUE(anchorNode, NS_ERROR_FAILURE);
nsCOMPtr<nsIDOMNode> selectedNode;
// Get child of anchor node, if exists
bool hasChildren;
anchorNode->HasChildNodes(&hasChildren);
if (hasChildren) {
int32_t anchorOffset;
rv = selection->GetAnchorOffset(&anchorOffset);
NS_ENSURE_SUCCESS(rv, rv);
selectedNode = 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 {
nsCOMPtr<nsIAtom> atom = EditorBase::GetTag(selectedNode);
if (atom == nsGkAtoms::td) {
tableOrCellElement = do_QueryInterface(selectedNode);
aTagName = tdName;
// Each cell is in its own selection range,
// so count signals multiple-cell selection
rv = selection->GetRangeCount(aSelectedCount);
NS_ENSURE_SUCCESS(rv, rv);
} else if (atom == nsGkAtoms::table) {
tableOrCellElement = do_QueryInterface(selectedNode);
aTagName.AssignLiteral("table");
*aSelectedCount = 1;
} else if (atom == nsGkAtoms::tr) {
tableOrCellElement = do_QueryInterface(selectedNode);
aTagName.AssignLiteral("tr");
*aSelectedCount = 1;
}
}
}
if (!tableOrCellElement) {
// Didn't find a table element -- find a cell parent
rv = GetElementOrParentByTagName(tdName, anchorNode,
getter_AddRefs(tableOrCellElement));
if (NS_FAILED(rv)) {
return rv;
}
if (tableOrCellElement) {
aTagName = tdName;
}
}
}
if (tableOrCellElement) {
*aTableElement = tableOrCellElement.get();
NS_ADDREF(*aTableElement);
}
return NS_OK;
}
NS_IMETHODIMP
HTMLEditor::GetSelectedCellsType(nsIDOMElement* aElement,
uint32_t* aSelectionType)
{
NS_ENSURE_ARG_POINTER(aSelectionType);
*aSelectionType = 0;
// Be sure we have a table element
// (if aElement is null, this uses selection's anchor node)
nsCOMPtr<nsIDOMElement> table;
nsresult rv =
GetElementOrParentByTagName(NS_LITERAL_STRING("table"), aElement,
getter_AddRefs(table));
NS_ENSURE_SUCCESS(rv, rv);
int32_t rowCount, colCount;
rv = GetTableSize(table, &rowCount, &colCount);
NS_ENSURE_SUCCESS(rv, rv);
// Traverse all selected cells
nsCOMPtr<nsIDOMElement> selectedCell;
rv = GetFirstSelectedCell(nullptr, getter_AddRefs(selectedCell));
NS_ENSURE_SUCCESS(rv, rv);
if (rv == NS_SUCCESS_EDITOR_ELEMENT_NOT_FOUND) {
return NS_OK;
}
// We have at least one selected cell, so set return value
*aSelectionType = nsISelectionPrivate::TABLESELECTION_CELL;
// Store indexes of each row/col to avoid duplication of searches
nsTArray<int32_t> indexArray;
bool allCellsInRowAreSelected = false;
bool allCellsInColAreSelected = false;
while (NS_SUCCEEDED(rv) && selectedCell) {
// Get the cell's location in the cellmap
int32_t startRowIndex, startColIndex;
rv = GetCellIndexes(selectedCell, &startRowIndex, &startColIndex);
if (NS_FAILED(rv)) {
return rv;
}
if (!indexArray.Contains(startColIndex)) {
indexArray.AppendElement(startColIndex);
allCellsInRowAreSelected = AllCellsInRowSelected(table, startRowIndex, colCount);
// We're done as soon as we fail for any row
if (!allCellsInRowAreSelected) {
break;
}
}
rv = GetNextSelectedCell(nullptr, getter_AddRefs(selectedCell));
}
if (allCellsInRowAreSelected) {
*aSelectionType = nsISelectionPrivate::TABLESELECTION_ROW;
return NS_OK;
}
// Test for columns
// Empty the indexArray
indexArray.Clear();
// Start at first cell again
rv = GetFirstSelectedCell(nullptr, getter_AddRefs(selectedCell));
while (NS_SUCCEEDED(rv) && selectedCell) {
// Get the cell's location in the cellmap
int32_t startRowIndex, startColIndex;
rv = GetCellIndexes(selectedCell, &startRowIndex, &startColIndex);
if (NS_FAILED(rv)) {
return rv;
}
if (!indexArray.Contains(startRowIndex)) {
indexArray.AppendElement(startColIndex);
allCellsInColAreSelected = AllCellsInColumnSelected(table, startColIndex, rowCount);
// We're done as soon as we fail for any column
if (!allCellsInRowAreSelected) {
break;
}
}
rv = GetNextSelectedCell(nullptr, getter_AddRefs(selectedCell));
}
if (allCellsInColAreSelected) {
*aSelectionType = nsISelectionPrivate::TABLESELECTION_COLUMN;
}
return NS_OK;
}
bool
HTMLEditor::AllCellsInRowSelected(nsIDOMElement* aTable,
int32_t aRowIndex,
int32_t aNumberOfColumns)
{
NS_ENSURE_TRUE(aTable, false);
int32_t curStartRowIndex, curStartColIndex, rowSpan, colSpan, actualRowSpan, actualColSpan;
bool isSelected;
for (int32_t col = 0; col < aNumberOfColumns;
col += std::max(actualColSpan, 1)) {
nsCOMPtr<nsIDOMElement> cell;
nsresult rv = GetCellDataAt(aTable, aRowIndex, col, getter_AddRefs(cell),
&curStartRowIndex, &curStartColIndex,
&rowSpan, &colSpan,
&actualRowSpan, &actualColSpan, &isSelected);
NS_ENSURE_SUCCESS(rv, false);
// If no cell, we may have a "ragged" right edge,
// so return TRUE only if we already found a cell in the row
NS_ENSURE_TRUE(cell, (col > 0) ? true : false);
// Return as soon as a non-selected cell is found
NS_ENSURE_TRUE(isSelected, false);
NS_ASSERTION((actualColSpan > 0),"ActualColSpan = 0 in AllCellsInRowSelected");
}
return true;
}
bool
HTMLEditor::AllCellsInColumnSelected(nsIDOMElement* aTable,
int32_t aColIndex,
int32_t aNumberOfRows)
{
NS_ENSURE_TRUE(aTable, false);
int32_t curStartRowIndex, curStartColIndex, rowSpan, colSpan, actualRowSpan, actualColSpan;
bool isSelected;
for (int32_t row = 0; row < aNumberOfRows;
row += std::max(actualRowSpan, 1)) {
nsCOMPtr<nsIDOMElement> cell;
nsresult rv = GetCellDataAt(aTable, row, aColIndex, getter_AddRefs(cell),
&curStartRowIndex, &curStartColIndex,
&rowSpan, &colSpan,
&actualRowSpan, &actualColSpan, &isSelected);
NS_ENSURE_SUCCESS(rv, 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
NS_ENSURE_TRUE(cell, (row > 0) ? true : false);
// Return as soon as a non-selected cell is found
NS_ENSURE_TRUE(isSelected, false);
}
return true;
}
bool
HTMLEditor::IsEmptyCell(dom::Element* aCell)
{
MOZ_ASSERT(aCell);
// Check if target only contains empty text node or <br>
nsCOMPtr<nsINode> cellChild = aCell->GetFirstChild();
if (!cellChild) {
return false;
}
nsCOMPtr<nsINode> nextChild = cellChild->GetNextSibling();
if (nextChild) {
return false;
}
// We insert a single break into a cell by default
// to have some place to locate a cursor -- it is dispensable
if (cellChild->IsHTMLElement(nsGkAtoms::br)) {
return true;
}
bool isEmpty;
// Or check if no real content
nsresult rv = IsEmptyNode(cellChild, &isEmpty, false, false);
NS_ENSURE_SUCCESS(rv, false);
return isEmpty;
}
} // namespace mozilla
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