291 lines
9.9 KiB
C++
291 lines
9.9 KiB
C++
/*
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* Copyright (C) 2008 Nuanti Ltd.
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* Copyright (C) 2009 Jan Alonzo
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* Copyright (C) 2009, 2010, 2011, 2012 Igalia S.L.
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*
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* Portions from Mozilla a11y, copyright as follows:
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*
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* The Original Code is mozilla.org code.
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*
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* The Initial Developer of the Original Code is
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* Sun Microsystems, Inc.
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* Portions created by the Initial Developer are Copyright (C) 2002
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* the Initial Developer. All Rights Reserved.
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public License
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* along with this library; see the file COPYING.LIB. If not, write to
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* the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
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* Boston, MA 02110-1301, USA.
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*/
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#include "config.h"
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#include "WebKitAccessibleInterfaceTable.h"
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#if ENABLE(ACCESSIBILITY)
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#include "AccessibilityListBox.h"
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#include "AccessibilityObject.h"
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#include "AccessibilityTable.h"
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#include "AccessibilityTableCell.h"
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#include "HTMLTableCaptionElement.h"
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#include "HTMLTableElement.h"
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#include "RenderElement.h"
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#include "WebKitAccessible.h"
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#include "WebKitAccessibleInterfaceText.h"
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#include "WebKitAccessibleUtil.h"
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using namespace WebCore;
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static AccessibilityObject* core(AtkTable* table)
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{
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if (!WEBKIT_IS_ACCESSIBLE(table))
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return nullptr;
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return &webkitAccessibleGetAccessibilityObject(WEBKIT_ACCESSIBLE(table));
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}
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static AXCoreObject* cell(AtkTable* table, guint row, guint column)
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{
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auto* accTable = core(table);
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return accTable ? accTable->cellForColumnAndRow(column, row) : nullptr;
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}
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static gint cellIndex(AXCoreObject* axCell, AccessibilityTable* axTable)
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{
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// Calculate the cell's index as if we had a traditional Gtk+ table in
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// which cells are all direct children of the table, arranged row-first.
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auto allCells = axTable->cells();
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AXCoreObject::AccessibilityChildrenVector::iterator position;
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position = std::find(allCells.begin(), allCells.end(), axCell);
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if (position == allCells.end())
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return -1;
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return position - allCells.begin();
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}
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static AccessibilityTableCell* cellAtIndex(AtkTable* table, gint index)
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{
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AccessibilityObject* accTable = core(table);
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if (is<AccessibilityTable>(*accTable)) {
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auto allCells = downcast<AccessibilityTable>(*accTable).cells();
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if (0 <= index && static_cast<unsigned>(index) < allCells.size())
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return downcast<AccessibilityTableCell>(allCells[index].get());
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}
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return nullptr;
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}
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static AtkObject* webkitAccessibleTableRefAt(AtkTable* table, gint row, gint column)
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{
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g_return_val_if_fail(ATK_TABLE(table), 0);
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returnValIfWebKitAccessibleIsInvalid(WEBKIT_ACCESSIBLE(table), 0);
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auto* axCell = cell(table, row, column);
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if (!axCell)
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return 0;
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auto* cell = axCell->wrapper();
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if (!cell)
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return 0;
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// This method transfers full ownership over the returned
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// AtkObject, so an extra reference is needed here.
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return ATK_OBJECT(g_object_ref(cell));
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}
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static gint webkitAccessibleTableGetIndexAt(AtkTable* table, gint row, gint column)
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{
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g_return_val_if_fail(ATK_TABLE(table), -1);
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returnValIfWebKitAccessibleIsInvalid(WEBKIT_ACCESSIBLE(table), -1);
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auto* axCell = cell(table, row, column);
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AccessibilityTable* axTable = downcast<AccessibilityTable>(core(table));
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return cellIndex(axCell, axTable);
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}
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static gint webkitAccessibleTableGetColumnAtIndex(AtkTable* table, gint index)
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{
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g_return_val_if_fail(ATK_TABLE(table), -1);
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returnValIfWebKitAccessibleIsInvalid(WEBKIT_ACCESSIBLE(table), -1);
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AccessibilityTableCell* axCell = cellAtIndex(table, index);
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if (axCell) {
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auto columnRange = axCell->columnIndexRange();
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return columnRange.first;
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}
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return -1;
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}
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static gint webkitAccessibleTableGetRowAtIndex(AtkTable* table, gint index)
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{
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g_return_val_if_fail(ATK_TABLE(table), -1);
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returnValIfWebKitAccessibleIsInvalid(WEBKIT_ACCESSIBLE(table), -1);
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AccessibilityTableCell* axCell = cellAtIndex(table, index);
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if (axCell) {
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auto rowRange = axCell->rowIndexRange();
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return rowRange.first;
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}
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return -1;
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}
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static gint webkitAccessibleTableGetNColumns(AtkTable* table)
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{
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g_return_val_if_fail(ATK_TABLE(table), 0);
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returnValIfWebKitAccessibleIsInvalid(WEBKIT_ACCESSIBLE(table), 0);
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AccessibilityObject* accTable = core(table);
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if (!is<AccessibilityTable>(*accTable))
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return 0;
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if (int columnCount = downcast<AccessibilityTable>(*accTable).axColumnCount())
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return columnCount;
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return downcast<AccessibilityTable>(*accTable).columnCount();
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}
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static gint webkitAccessibleTableGetNRows(AtkTable* table)
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{
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g_return_val_if_fail(ATK_TABLE(table), 0);
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returnValIfWebKitAccessibleIsInvalid(WEBKIT_ACCESSIBLE(table), 0);
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AccessibilityObject* accTable = core(table);
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if (!is<AccessibilityTable>(*accTable))
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return 0;
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if (int rowCount = downcast<AccessibilityTable>(*accTable).axRowCount())
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return rowCount;
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return downcast<AccessibilityTable>(*accTable).rowCount();
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}
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static gint webkitAccessibleTableGetColumnExtentAt(AtkTable* table, gint row, gint column)
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{
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g_return_val_if_fail(ATK_TABLE(table), 0);
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returnValIfWebKitAccessibleIsInvalid(WEBKIT_ACCESSIBLE(table), 0);
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auto* axCell = cell(table, row, column);
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if (axCell) {
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auto columnRange = axCell->columnIndexRange();
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return columnRange.second;
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}
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return 0;
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}
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static gint webkitAccessibleTableGetRowExtentAt(AtkTable* table, gint row, gint column)
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{
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g_return_val_if_fail(ATK_TABLE(table), 0);
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returnValIfWebKitAccessibleIsInvalid(WEBKIT_ACCESSIBLE(table), 0);
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auto* axCell = cell(table, row, column);
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if (axCell) {
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auto rowRange = axCell->rowIndexRange();
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return rowRange.second;
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}
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return 0;
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}
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static AtkObject* webkitAccessibleTableGetColumnHeader(AtkTable* table, gint column)
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{
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g_return_val_if_fail(ATK_TABLE(table), 0);
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returnValIfWebKitAccessibleIsInvalid(WEBKIT_ACCESSIBLE(table), 0);
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AccessibilityObject* accTable = core(table);
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if (is<AccessibilityTable>(*accTable)) {
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auto columnHeaders = downcast<AccessibilityTable>(*accTable).columnHeaders();
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for (const auto& columnHeader : columnHeaders) {
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auto columnRange = columnHeader->columnIndexRange();
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if (columnRange.first <= static_cast<unsigned>(column) && static_cast<unsigned>(column) < columnRange.first + columnRange.second)
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return ATK_OBJECT(columnHeader->wrapper());
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}
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}
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return nullptr;
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}
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static AtkObject* webkitAccessibleTableGetRowHeader(AtkTable* table, gint row)
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{
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g_return_val_if_fail(ATK_TABLE(table), 0);
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returnValIfWebKitAccessibleIsInvalid(WEBKIT_ACCESSIBLE(table), 0);
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AccessibilityObject* accTable = core(table);
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if (is<AccessibilityTable>(*accTable)) {
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auto rowHeaders = downcast<AccessibilityTable>(*accTable).rowHeaders();
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for (const auto& rowHeader : rowHeaders) {
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auto rowRange = rowHeader->rowIndexRange();
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if (rowRange.first <= static_cast<unsigned>(row) && static_cast<unsigned>(row) < rowRange.first + rowRange.second)
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return ATK_OBJECT(rowHeader->wrapper());
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}
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}
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return nullptr;
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}
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static AtkObject* webkitAccessibleTableGetCaption(AtkTable* table)
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{
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g_return_val_if_fail(ATK_TABLE(table), nullptr);
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returnValIfWebKitAccessibleIsInvalid(WEBKIT_ACCESSIBLE(table), nullptr);
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AccessibilityObject* accTable = core(table);
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if (accTable->isAccessibilityRenderObject()) {
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Node* node = accTable->node();
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if (is<HTMLTableElement>(node)) {
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auto caption = downcast<HTMLTableElement>(*node).caption();
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if (caption)
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return ATK_OBJECT(AccessibilityObject::firstAccessibleObjectFromNode(caption->renderer()->element())->wrapper());
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}
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}
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return nullptr;
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}
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static const gchar* webkitAccessibleTableGetColumnDescription(AtkTable* table, gint column)
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{
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g_return_val_if_fail(ATK_TABLE(table), 0);
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returnValIfWebKitAccessibleIsInvalid(WEBKIT_ACCESSIBLE(table), 0);
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AtkObject* columnHeader = atk_table_get_column_header(table, column);
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if (columnHeader && ATK_IS_TEXT(columnHeader))
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return atk_text_get_text(ATK_TEXT(columnHeader), 0, -1);
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return 0;
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}
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static const gchar* webkitAccessibleTableGetRowDescription(AtkTable* table, gint row)
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{
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g_return_val_if_fail(ATK_TABLE(table), 0);
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returnValIfWebKitAccessibleIsInvalid(WEBKIT_ACCESSIBLE(table), 0);
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AtkObject* rowHeader = atk_table_get_row_header(table, row);
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if (rowHeader && ATK_IS_TEXT(rowHeader))
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return atk_text_get_text(ATK_TEXT(rowHeader), 0, -1);
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return 0;
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}
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void webkitAccessibleTableInterfaceInit(AtkTableIface* iface)
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{
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iface->ref_at = webkitAccessibleTableRefAt;
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iface->get_index_at = webkitAccessibleTableGetIndexAt;
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iface->get_column_at_index = webkitAccessibleTableGetColumnAtIndex;
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iface->get_row_at_index = webkitAccessibleTableGetRowAtIndex;
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iface->get_n_columns = webkitAccessibleTableGetNColumns;
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iface->get_n_rows = webkitAccessibleTableGetNRows;
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iface->get_column_extent_at = webkitAccessibleTableGetColumnExtentAt;
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iface->get_row_extent_at = webkitAccessibleTableGetRowExtentAt;
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iface->get_column_header = webkitAccessibleTableGetColumnHeader;
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iface->get_row_header = webkitAccessibleTableGetRowHeader;
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iface->get_caption = webkitAccessibleTableGetCaption;
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iface->get_column_description = webkitAccessibleTableGetColumnDescription;
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iface->get_row_description = webkitAccessibleTableGetRowDescription;
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}
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#endif
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