gecko-dev/accessible/atk/nsMaiInterfaceTable.cpp

321 строка
8.3 KiB
C++

/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=2 et sw=2 tw=80: */
/* 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 "InterfaceInitFuncs.h"
#include "Accessible-inl.h"
#include "AccessibleWrap.h"
#include "nsAccUtils.h"
#include "TableAccessible.h"
#include "TableCellAccessible.h"
#include "nsMai.h"
#include "nsArrayUtils.h"
#include "mozilla/Likely.h"
using namespace mozilla::a11y;
extern "C" {
static AtkObject*
refAtCB(AtkTable* aTable, gint aRowIdx, gint aColIdx)
{
AccessibleWrap* accWrap = GetAccessibleWrap(ATK_OBJECT(aTable));
if (!accWrap || aRowIdx < 0 || aColIdx < 0)
return nullptr;
Accessible* cell = accWrap->AsTable()->CellAt(aRowIdx, aColIdx);
if (!cell)
return nullptr;
AtkObject* cellAtkObj = AccessibleWrap::GetAtkObject(cell);
if (cellAtkObj)
g_object_ref(cellAtkObj);
return cellAtkObj;
}
static gint
getIndexAtCB(AtkTable* aTable, gint aRowIdx, gint aColIdx)
{
AccessibleWrap* accWrap = GetAccessibleWrap(ATK_OBJECT(aTable));
if (!accWrap || aRowIdx < 0 || aColIdx < 0)
return -1;
return static_cast<gint>(accWrap->AsTable()->CellIndexAt(aRowIdx, aColIdx));
}
static gint
getColumnAtIndexCB(AtkTable *aTable, gint aIdx)
{
AccessibleWrap* accWrap = GetAccessibleWrap(ATK_OBJECT(aTable));
if (!accWrap || aIdx < 0)
return -1;
return static_cast<gint>(accWrap->AsTable()->ColIndexAt(aIdx));
}
static gint
getRowAtIndexCB(AtkTable *aTable, gint aIdx)
{
AccessibleWrap* accWrap = GetAccessibleWrap(ATK_OBJECT(aTable));
if (!accWrap || aIdx < 0)
return -1;
return static_cast<gint>(accWrap->AsTable()->RowIndexAt(aIdx));
}
static gint
getColumnCountCB(AtkTable *aTable)
{
AccessibleWrap* accWrap = GetAccessibleWrap(ATK_OBJECT(aTable));
if (!accWrap)
return -1;
return static_cast<gint>(accWrap->AsTable()->ColCount());
}
static gint
getRowCountCB(AtkTable *aTable)
{
AccessibleWrap* accWrap = GetAccessibleWrap(ATK_OBJECT(aTable));
if (!accWrap)
return -1;
return static_cast<gint>(accWrap->AsTable()->RowCount());
}
static gint
getColumnExtentAtCB(AtkTable *aTable, gint aRowIdx, gint aColIdx)
{
AccessibleWrap* accWrap = GetAccessibleWrap(ATK_OBJECT(aTable));
if (!accWrap || aRowIdx < 0 || aColIdx < 0)
return -1;
return static_cast<gint>(accWrap->AsTable()->ColExtentAt(aRowIdx, aColIdx));
}
static gint
getRowExtentAtCB(AtkTable *aTable, gint aRowIdx, gint aColIdx)
{
AccessibleWrap* accWrap = GetAccessibleWrap(ATK_OBJECT(aTable));
if (!accWrap)
return -1;
return static_cast<gint>(accWrap->AsTable()->RowExtentAt(aRowIdx, aColIdx));
}
static AtkObject*
getCaptionCB(AtkTable* aTable)
{
AccessibleWrap* accWrap = GetAccessibleWrap(ATK_OBJECT(aTable));
if (!accWrap)
return nullptr;
Accessible* caption = accWrap->AsTable()->Caption();
return caption ? AccessibleWrap::GetAtkObject(caption) : nullptr;
}
static const gchar*
getColumnDescriptionCB(AtkTable *aTable, gint aColumn)
{
AccessibleWrap* accWrap = GetAccessibleWrap(ATK_OBJECT(aTable));
if (!accWrap)
return nullptr;
nsAutoString autoStr;
accWrap->AsTable()->ColDescription(aColumn, autoStr);
return AccessibleWrap::ReturnString(autoStr);
}
static AtkObject*
getColumnHeaderCB(AtkTable *aTable, gint aColIdx)
{
AccessibleWrap* accWrap = GetAccessibleWrap(ATK_OBJECT(aTable));
if (!accWrap)
return nullptr;
Accessible* cell = accWrap->AsTable()->CellAt(0, aColIdx);
if (!cell)
return nullptr;
// If the cell at the first row is column header then assume it is column
// header for all rows,
if (cell->Role() == roles::COLUMNHEADER)
return AccessibleWrap::GetAtkObject(cell);
// otherwise get column header for the data cell at the first row.
TableCellAccessible* tableCell = cell->AsTableCell();
if (!tableCell)
return nullptr;
nsAutoTArray<Accessible*, 10> headerCells;
tableCell->ColHeaderCells(&headerCells);
if (headerCells.IsEmpty())
return nullptr;
return AccessibleWrap::GetAtkObject(headerCells[0]);
}
static const gchar*
getRowDescriptionCB(AtkTable *aTable, gint aRow)
{
AccessibleWrap* accWrap = GetAccessibleWrap(ATK_OBJECT(aTable));
if (!accWrap)
return nullptr;
nsAutoString autoStr;
accWrap->AsTable()->RowDescription(aRow, autoStr);
return AccessibleWrap::ReturnString(autoStr);
}
static AtkObject*
getRowHeaderCB(AtkTable *aTable, gint aRowIdx)
{
AccessibleWrap* accWrap = GetAccessibleWrap(ATK_OBJECT(aTable));
if (!accWrap)
return nullptr;
Accessible* cell = accWrap->AsTable()->CellAt(aRowIdx, 0);
if (!cell)
return nullptr;
// If the cell at the first column is row header then assume it is row
// header for all columns,
if (cell->Role() == roles::ROWHEADER)
return AccessibleWrap::GetAtkObject(cell);
// otherwise get row header for the data cell at the first column.
TableCellAccessible* tableCell = cell->AsTableCell();
if (!tableCell)
return nullptr;
nsAutoTArray<Accessible*, 10> headerCells;
tableCell->RowHeaderCells(&headerCells);
if (headerCells.IsEmpty())
return nullptr;
return AccessibleWrap::GetAtkObject(headerCells[0]);
}
static AtkObject*
getSummaryCB(AtkTable *aTable)
{
// Neither html:table nor xul:tree nor ARIA grid/tree have an ability to
// link an accessible object to specify a summary. There is closes method
// in TableAccessible::summary to get a summary as a string which is not
// mapped directly to ATK.
return nullptr;
}
static gint
getSelectedColumnsCB(AtkTable *aTable, gint** aSelected)
{
*aSelected = nullptr;
AccessibleWrap* accWrap = GetAccessibleWrap(ATK_OBJECT(aTable));
if (!accWrap)
return 0;
nsAutoTArray<uint32_t, 10> cols;
accWrap->AsTable()->SelectedColIndices(&cols);
if (cols.IsEmpty())
return 0;
gint* atkColumns = g_new(gint, cols.Length());
if (!atkColumns) {
NS_WARNING("OUT OF MEMORY");
return 0;
}
memcpy(atkColumns, cols.Elements(), cols.Length() * sizeof(uint32_t));
*aSelected = atkColumns;
return cols.Length();
}
static gint
getSelectedRowsCB(AtkTable *aTable, gint **aSelected)
{
AccessibleWrap* accWrap = GetAccessibleWrap(ATK_OBJECT(aTable));
if (!accWrap)
return 0;
nsAutoTArray<uint32_t, 10> rows;
accWrap->AsTable()->SelectedRowIndices(&rows);
gint* atkRows = g_new(gint, rows.Length());
if (!atkRows) {
NS_WARNING("OUT OF MEMORY");
return 0;
}
memcpy(atkRows, rows.Elements(), rows.Length() * sizeof(uint32_t));
*aSelected = atkRows;
return rows.Length();
}
static gboolean
isColumnSelectedCB(AtkTable *aTable, gint aColIdx)
{
AccessibleWrap* accWrap = GetAccessibleWrap(ATK_OBJECT(aTable));
if (!accWrap)
return FALSE;
return static_cast<gboolean>(accWrap->AsTable()->IsColSelected(aColIdx));
}
static gboolean
isRowSelectedCB(AtkTable *aTable, gint aRowIdx)
{
AccessibleWrap* accWrap = GetAccessibleWrap(ATK_OBJECT(aTable));
if (!accWrap)
return FALSE;
return static_cast<gboolean>(accWrap->AsTable()->IsRowSelected(aRowIdx));
}
static gboolean
isCellSelectedCB(AtkTable *aTable, gint aRowIdx, gint aColIdx)
{
AccessibleWrap* accWrap = GetAccessibleWrap(ATK_OBJECT(aTable));
if (!accWrap)
return FALSE;
return static_cast<gboolean>(accWrap->AsTable()->
IsCellSelected(aRowIdx, aColIdx));
}
}
void
tableInterfaceInitCB(AtkTableIface* aIface)
{
NS_ASSERTION(aIface, "no interface!");
if (MOZ_UNLIKELY(!aIface))
return;
aIface->ref_at = refAtCB;
aIface->get_index_at = getIndexAtCB;
aIface->get_column_at_index = getColumnAtIndexCB;
aIface->get_row_at_index = getRowAtIndexCB;
aIface->get_n_columns = getColumnCountCB;
aIface->get_n_rows = getRowCountCB;
aIface->get_column_extent_at = getColumnExtentAtCB;
aIface->get_row_extent_at = getRowExtentAtCB;
aIface->get_caption = getCaptionCB;
aIface->get_column_description = getColumnDescriptionCB;
aIface->get_column_header = getColumnHeaderCB;
aIface->get_row_description = getRowDescriptionCB;
aIface->get_row_header = getRowHeaderCB;
aIface->get_summary = getSummaryCB;
aIface->get_selected_columns = getSelectedColumnsCB;
aIface->get_selected_rows = getSelectedRowsCB;
aIface->is_column_selected = isColumnSelectedCB;
aIface->is_row_selected = isRowSelectedCB;
aIface->is_selected = isCellSelectedCB;
}