зеркало из https://github.com/mozilla/gecko-dev.git
720 строки
17 KiB
C++
720 строки
17 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#include "ARIAGridAccessible-inl.h"
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#include "Accessible-inl.h"
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#include "AccIterator.h"
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#include "nsAccUtils.h"
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#include "Role.h"
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#include "States.h"
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#include "nsIMutableArray.h"
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#include "nsIPersistentProperties2.h"
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#include "nsComponentManagerUtils.h"
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using namespace mozilla;
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using namespace mozilla::a11y;
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////////////////////////////////////////////////////////////////////////////////
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// ARIAGridAccessible
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////////////////////////////////////////////////////////////////////////////////
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////////////////////////////////////////////////////////////////////////////////
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// Constructor
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ARIAGridAccessible::
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ARIAGridAccessible(nsIContent* aContent, DocAccessible* aDoc) :
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AccessibleWrap(aContent, aDoc)
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{
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mGenericTypes |= eTable;
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}
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role
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ARIAGridAccessible::NativeRole() const
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{
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a11y::role r = GetAccService()->MarkupRole(mContent);
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return r != roles::NOTHING ? r : roles::TABLE;
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}
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////////////////////////////////////////////////////////////////////////////////
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// Table
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uint32_t
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ARIAGridAccessible::ColCount() const
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{
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AccIterator rowIter(this, filters::GetRow);
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Accessible* row = rowIter.Next();
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if (!row)
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return 0;
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AccIterator cellIter(row, filters::GetCell);
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Accessible* cell = nullptr;
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uint32_t colCount = 0;
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while ((cell = cellIter.Next()))
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colCount++;
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return colCount;
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}
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uint32_t
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ARIAGridAccessible::RowCount()
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{
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uint32_t rowCount = 0;
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AccIterator rowIter(this, filters::GetRow);
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while (rowIter.Next())
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rowCount++;
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return rowCount;
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}
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Accessible*
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ARIAGridAccessible::CellAt(uint32_t aRowIndex, uint32_t aColumnIndex)
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{
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Accessible* row = GetRowAt(aRowIndex);
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if (!row)
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return nullptr;
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return GetCellInRowAt(row, aColumnIndex);
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}
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bool
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ARIAGridAccessible::IsColSelected(uint32_t aColIdx)
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{
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if (IsARIARole(nsGkAtoms::table))
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return false;
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AccIterator rowIter(this, filters::GetRow);
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Accessible* row = rowIter.Next();
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if (!row)
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return false;
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do {
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if (!nsAccUtils::IsARIASelected(row)) {
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Accessible* cell = GetCellInRowAt(row, aColIdx);
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if (!cell || !nsAccUtils::IsARIASelected(cell))
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return false;
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}
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} while ((row = rowIter.Next()));
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return true;
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}
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bool
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ARIAGridAccessible::IsRowSelected(uint32_t aRowIdx)
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{
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if (IsARIARole(nsGkAtoms::table))
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return false;
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Accessible* row = GetRowAt(aRowIdx);
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if(!row)
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return false;
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if (!nsAccUtils::IsARIASelected(row)) {
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AccIterator cellIter(row, filters::GetCell);
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Accessible* cell = nullptr;
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while ((cell = cellIter.Next())) {
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if (!nsAccUtils::IsARIASelected(cell))
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return false;
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}
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}
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return true;
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}
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bool
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ARIAGridAccessible::IsCellSelected(uint32_t aRowIdx, uint32_t aColIdx)
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{
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if (IsARIARole(nsGkAtoms::table))
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return false;
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Accessible* row = GetRowAt(aRowIdx);
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if(!row)
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return false;
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if (!nsAccUtils::IsARIASelected(row)) {
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Accessible* cell = GetCellInRowAt(row, aColIdx);
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if (!cell || !nsAccUtils::IsARIASelected(cell))
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return false;
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}
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return true;
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}
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uint32_t
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ARIAGridAccessible::SelectedCellCount()
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{
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if (IsARIARole(nsGkAtoms::table))
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return 0;
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uint32_t count = 0, colCount = ColCount();
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AccIterator rowIter(this, filters::GetRow);
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Accessible* row = nullptr;
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while ((row = rowIter.Next())) {
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if (nsAccUtils::IsARIASelected(row)) {
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count += colCount;
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continue;
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}
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AccIterator cellIter(row, filters::GetCell);
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Accessible* cell = nullptr;
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while ((cell = cellIter.Next())) {
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if (nsAccUtils::IsARIASelected(cell))
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count++;
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}
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}
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return count;
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}
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uint32_t
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ARIAGridAccessible::SelectedColCount()
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{
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if (IsARIARole(nsGkAtoms::table))
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return 0;
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uint32_t colCount = ColCount();
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if (!colCount)
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return 0;
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AccIterator rowIter(this, filters::GetRow);
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Accessible* row = rowIter.Next();
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if (!row)
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return 0;
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nsTArray<bool> isColSelArray(colCount);
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isColSelArray.AppendElements(colCount);
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memset(isColSelArray.Elements(), true, colCount * sizeof(bool));
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uint32_t selColCount = colCount;
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do {
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if (nsAccUtils::IsARIASelected(row))
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continue;
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AccIterator cellIter(row, filters::GetCell);
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Accessible* cell = nullptr;
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for (uint32_t colIdx = 0;
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(cell = cellIter.Next()) && colIdx < colCount; colIdx++)
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if (isColSelArray[colIdx] && !nsAccUtils::IsARIASelected(cell)) {
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isColSelArray[colIdx] = false;
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selColCount--;
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}
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} while ((row = rowIter.Next()));
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return selColCount;
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}
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uint32_t
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ARIAGridAccessible::SelectedRowCount()
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{
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if (IsARIARole(nsGkAtoms::table))
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return 0;
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uint32_t count = 0;
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AccIterator rowIter(this, filters::GetRow);
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Accessible* row = nullptr;
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while ((row = rowIter.Next())) {
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if (nsAccUtils::IsARIASelected(row)) {
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count++;
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continue;
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}
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AccIterator cellIter(row, filters::GetCell);
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Accessible* cell = cellIter.Next();
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if (!cell)
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continue;
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bool isRowSelected = true;
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do {
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if (!nsAccUtils::IsARIASelected(cell)) {
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isRowSelected = false;
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break;
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}
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} while ((cell = cellIter.Next()));
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if (isRowSelected)
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count++;
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}
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return count;
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}
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void
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ARIAGridAccessible::SelectedCells(nsTArray<Accessible*>* aCells)
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{
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if (IsARIARole(nsGkAtoms::table))
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return;
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AccIterator rowIter(this, filters::GetRow);
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Accessible* row = nullptr;
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while ((row = rowIter.Next())) {
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AccIterator cellIter(row, filters::GetCell);
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Accessible* cell = nullptr;
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if (nsAccUtils::IsARIASelected(row)) {
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while ((cell = cellIter.Next()))
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aCells->AppendElement(cell);
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continue;
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}
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while ((cell = cellIter.Next())) {
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if (nsAccUtils::IsARIASelected(cell))
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aCells->AppendElement(cell);
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}
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}
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}
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void
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ARIAGridAccessible::SelectedCellIndices(nsTArray<uint32_t>* aCells)
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{
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if (IsARIARole(nsGkAtoms::table))
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return;
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uint32_t colCount = ColCount();
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AccIterator rowIter(this, filters::GetRow);
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Accessible* row = nullptr;
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for (uint32_t rowIdx = 0; (row = rowIter.Next()); rowIdx++) {
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if (nsAccUtils::IsARIASelected(row)) {
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for (uint32_t colIdx = 0; colIdx < colCount; colIdx++)
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aCells->AppendElement(rowIdx * colCount + colIdx);
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continue;
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}
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AccIterator cellIter(row, filters::GetCell);
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Accessible* cell = nullptr;
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for (uint32_t colIdx = 0; (cell = cellIter.Next()); colIdx++) {
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if (nsAccUtils::IsARIASelected(cell))
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aCells->AppendElement(rowIdx * colCount + colIdx);
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}
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}
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}
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void
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ARIAGridAccessible::SelectedColIndices(nsTArray<uint32_t>* aCols)
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{
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if (IsARIARole(nsGkAtoms::table))
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return;
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uint32_t colCount = ColCount();
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if (!colCount)
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return;
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AccIterator rowIter(this, filters::GetRow);
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Accessible* row = rowIter.Next();
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if (!row)
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return;
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nsTArray<bool> isColSelArray(colCount);
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isColSelArray.AppendElements(colCount);
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memset(isColSelArray.Elements(), true, colCount * sizeof(bool));
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do {
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if (nsAccUtils::IsARIASelected(row))
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continue;
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AccIterator cellIter(row, filters::GetCell);
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Accessible* cell = nullptr;
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for (uint32_t colIdx = 0;
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(cell = cellIter.Next()) && colIdx < colCount; colIdx++)
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if (isColSelArray[colIdx] && !nsAccUtils::IsARIASelected(cell)) {
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isColSelArray[colIdx] = false;
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}
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} while ((row = rowIter.Next()));
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for (uint32_t colIdx = 0; colIdx < colCount; colIdx++)
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if (isColSelArray[colIdx])
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aCols->AppendElement(colIdx);
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}
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void
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ARIAGridAccessible::SelectedRowIndices(nsTArray<uint32_t>* aRows)
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{
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if (IsARIARole(nsGkAtoms::table))
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return;
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AccIterator rowIter(this, filters::GetRow);
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Accessible* row = nullptr;
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for (uint32_t rowIdx = 0; (row = rowIter.Next()); rowIdx++) {
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if (nsAccUtils::IsARIASelected(row)) {
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aRows->AppendElement(rowIdx);
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continue;
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}
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AccIterator cellIter(row, filters::GetCell);
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Accessible* cell = cellIter.Next();
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if (!cell)
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continue;
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bool isRowSelected = true;
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do {
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if (!nsAccUtils::IsARIASelected(cell)) {
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isRowSelected = false;
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break;
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}
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} while ((cell = cellIter.Next()));
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if (isRowSelected)
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aRows->AppendElement(rowIdx);
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}
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}
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void
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ARIAGridAccessible::SelectRow(uint32_t aRowIdx)
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{
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if (IsARIARole(nsGkAtoms::table))
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return;
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AccIterator rowIter(this, filters::GetRow);
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Accessible* row = nullptr;
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for (uint32_t rowIdx = 0; (row = rowIter.Next()); rowIdx++) {
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DebugOnly<nsresult> rv = SetARIASelected(row, rowIdx == aRowIdx);
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NS_ASSERTION(NS_SUCCEEDED(rv), "SetARIASelected() Shouldn't fail!");
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}
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}
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void
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ARIAGridAccessible::SelectCol(uint32_t aColIdx)
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{
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if (IsARIARole(nsGkAtoms::table))
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return;
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AccIterator rowIter(this, filters::GetRow);
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Accessible* row = nullptr;
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while ((row = rowIter.Next())) {
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// Unselect all cells in the row.
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DebugOnly<nsresult> rv = SetARIASelected(row, false);
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NS_ASSERTION(NS_SUCCEEDED(rv), "SetARIASelected() Shouldn't fail!");
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// Select cell at the column index.
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Accessible* cell = GetCellInRowAt(row, aColIdx);
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if (cell)
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SetARIASelected(cell, true);
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}
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}
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void
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ARIAGridAccessible::UnselectRow(uint32_t aRowIdx)
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{
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if (IsARIARole(nsGkAtoms::table))
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return;
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Accessible* row = GetRowAt(aRowIdx);
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if (row)
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SetARIASelected(row, false);
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}
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void
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ARIAGridAccessible::UnselectCol(uint32_t aColIdx)
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{
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if (IsARIARole(nsGkAtoms::table))
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return;
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AccIterator rowIter(this, filters::GetRow);
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Accessible* row = nullptr;
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while ((row = rowIter.Next())) {
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Accessible* cell = GetCellInRowAt(row, aColIdx);
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if (cell)
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SetARIASelected(cell, false);
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}
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}
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////////////////////////////////////////////////////////////////////////////////
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// Protected
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Accessible*
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ARIAGridAccessible::GetRowAt(int32_t aRow)
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{
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int32_t rowIdx = aRow;
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AccIterator rowIter(this, filters::GetRow);
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Accessible* row = rowIter.Next();
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while (rowIdx != 0 && (row = rowIter.Next()))
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rowIdx--;
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return row;
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}
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Accessible*
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ARIAGridAccessible::GetCellInRowAt(Accessible* aRow, int32_t aColumn)
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{
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int32_t colIdx = aColumn;
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AccIterator cellIter(aRow, filters::GetCell);
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Accessible* cell = cellIter.Next();
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while (colIdx != 0 && (cell = cellIter.Next()))
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colIdx--;
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return cell;
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}
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nsresult
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ARIAGridAccessible::SetARIASelected(Accessible* aAccessible,
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bool aIsSelected, bool aNotify)
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{
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if (IsARIARole(nsGkAtoms::table))
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return NS_OK;
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nsIContent* content = aAccessible->GetContent();
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NS_ENSURE_STATE(content);
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nsresult rv = NS_OK;
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if (content->IsElement()) {
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if (aIsSelected)
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rv = content->AsElement()->SetAttr(kNameSpaceID_None, nsGkAtoms::aria_selected,
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NS_LITERAL_STRING("true"), aNotify);
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else
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rv = content->AsElement()->SetAttr(kNameSpaceID_None, nsGkAtoms::aria_selected,
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NS_LITERAL_STRING("false"), aNotify);
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}
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NS_ENSURE_SUCCESS(rv, rv);
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// No "smart" select/unselect for internal call.
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if (!aNotify)
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return NS_OK;
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// If row or cell accessible was selected then we're able to not bother about
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// selection of its cells or its row because our algorithm is row oriented,
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// i.e. we check selection on row firstly and then on cells.
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if (aIsSelected)
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return NS_OK;
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roles::Role role = aAccessible->Role();
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// If the given accessible is row that was unselected then remove
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// aria-selected from cell accessible.
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if (role == roles::ROW) {
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AccIterator cellIter(aAccessible, filters::GetCell);
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Accessible* cell = nullptr;
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while ((cell = cellIter.Next())) {
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rv = SetARIASelected(cell, false, false);
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NS_ENSURE_SUCCESS(rv, rv);
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}
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return NS_OK;
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}
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// If the given accessible is cell that was unselected and its row is selected
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// then remove aria-selected from row and put aria-selected on
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// siblings cells.
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if (role == roles::GRID_CELL || role == roles::ROWHEADER ||
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role == roles::COLUMNHEADER) {
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Accessible* row = aAccessible->Parent();
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if (row && row->Role() == roles::ROW &&
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nsAccUtils::IsARIASelected(row)) {
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rv = SetARIASelected(row, false, false);
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NS_ENSURE_SUCCESS(rv, rv);
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AccIterator cellIter(row, filters::GetCell);
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Accessible* cell = nullptr;
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while ((cell = cellIter.Next())) {
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if (cell != aAccessible) {
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rv = SetARIASelected(cell, true, false);
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NS_ENSURE_SUCCESS(rv, rv);
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}
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}
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}
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}
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return NS_OK;
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}
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////////////////////////////////////////////////////////////////////////////////
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// ARIARowAccessible
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////////////////////////////////////////////////////////////////////////////////
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ARIARowAccessible::
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ARIARowAccessible(nsIContent* aContent, DocAccessible* aDoc) :
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AccessibleWrap(aContent, aDoc)
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{
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mGenericTypes |= eTableRow;
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}
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role
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ARIARowAccessible::NativeRole() const
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{
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a11y::role r = GetAccService()->MarkupRole(mContent);
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return r != roles::NOTHING ? r : roles::ROW;
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}
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GroupPos
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ARIARowAccessible::GroupPosition()
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{
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int32_t count = 0, index = 0;
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Accessible* table = nsAccUtils::TableFor(this);
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if (table && nsCoreUtils::GetUIntAttr(table->GetContent(),
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nsGkAtoms::aria_rowcount, &count) &&
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nsCoreUtils::GetUIntAttr(mContent, nsGkAtoms::aria_rowindex, &index)) {
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return GroupPos(0, index, count);
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}
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return AccessibleWrap::GroupPosition();
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}
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////////////////////////////////////////////////////////////////////////////////
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// ARIAGridCellAccessible
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////////////////////////////////////////////////////////////////////////////////
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////////////////////////////////////////////////////////////////////////////////
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// Constructor
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ARIAGridCellAccessible::
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ARIAGridCellAccessible(nsIContent* aContent, DocAccessible* aDoc) :
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HyperTextAccessibleWrap(aContent, aDoc)
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{
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mGenericTypes |= eTableCell;
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}
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role
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ARIAGridCellAccessible::NativeRole() const
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{
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a11y::role r = GetAccService()->MarkupRole(mContent);
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return r != roles::NOTHING ? r : roles::CELL;
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}
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////////////////////////////////////////////////////////////////////////////////
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// TableCell
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TableAccessible*
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ARIAGridCellAccessible::Table() const
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{
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Accessible* table = nsAccUtils::TableFor(Row());
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return table ? table->AsTable() : nullptr;
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}
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uint32_t
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ARIAGridCellAccessible::ColIdx() const
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{
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Accessible* row = Row();
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if (!row)
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return 0;
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int32_t indexInRow = IndexInParent();
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uint32_t colIdx = 0;
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for (int32_t idx = 0; idx < indexInRow; idx++) {
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Accessible* cell = row->GetChildAt(idx);
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roles::Role role = cell->Role();
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if (role == roles::CELL || role == roles::GRID_CELL ||
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role == roles::ROWHEADER || role == roles::COLUMNHEADER)
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colIdx++;
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}
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return colIdx;
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}
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uint32_t
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ARIAGridCellAccessible::RowIdx() const
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{
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return RowIndexFor(Row());
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}
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bool
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ARIAGridCellAccessible::Selected()
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{
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Accessible* row = Row();
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if (!row)
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return false;
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return nsAccUtils::IsARIASelected(row) || nsAccUtils::IsARIASelected(this);
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}
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////////////////////////////////////////////////////////////////////////////////
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// Accessible
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void
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ARIAGridCellAccessible::ApplyARIAState(uint64_t* aState) const
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{
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HyperTextAccessibleWrap::ApplyARIAState(aState);
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// Return if the gridcell has aria-selected="true".
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if (*aState & states::SELECTED)
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return;
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// Check aria-selected="true" on the row.
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Accessible* row = Parent();
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if (!row || row->Role() != roles::ROW)
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return;
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nsIContent *rowContent = row->GetContent();
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if (nsAccUtils::HasDefinedARIAToken(rowContent, nsGkAtoms::aria_selected) &&
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!rowContent->AsElement()->AttrValueIs(kNameSpaceID_None,
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nsGkAtoms::aria_selected,
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nsGkAtoms::_false, eCaseMatters))
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*aState |= states::SELECTABLE | states::SELECTED;
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}
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already_AddRefed<nsIPersistentProperties>
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ARIAGridCellAccessible::NativeAttributes()
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{
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nsCOMPtr<nsIPersistentProperties> attributes =
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HyperTextAccessibleWrap::NativeAttributes();
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// Expose "table-cell-index" attribute.
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Accessible* thisRow = Row();
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if (!thisRow)
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return attributes.forget();
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int32_t colIdx = 0, colCount = 0;
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uint32_t childCount = thisRow->ChildCount();
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for (uint32_t childIdx = 0; childIdx < childCount; childIdx++) {
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Accessible* child = thisRow->GetChildAt(childIdx);
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if (child == this)
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colIdx = colCount;
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roles::Role role = child->Role();
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if (role == roles::CELL || role == roles::GRID_CELL ||
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role == roles::ROWHEADER || role == roles::COLUMNHEADER)
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colCount++;
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}
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int32_t rowIdx = RowIndexFor(thisRow);
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nsAutoString stringIdx;
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stringIdx.AppendInt(rowIdx * colCount + colIdx);
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nsAccUtils::SetAccAttr(attributes, nsGkAtoms::tableCellIndex, stringIdx);
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#ifdef DEBUG
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nsAutoString unused;
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attributes->SetStringProperty(NS_LITERAL_CSTRING("cppclass"),
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NS_LITERAL_STRING("ARIAGridCellAccessible"),
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unused);
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#endif
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return attributes.forget();
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}
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GroupPos
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ARIAGridCellAccessible::GroupPosition()
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{
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int32_t count = 0, index = 0;
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TableAccessible* table = Table();
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if (table && nsCoreUtils::GetUIntAttr(table->AsAccessible()->GetContent(),
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nsGkAtoms::aria_colcount, &count) &&
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nsCoreUtils::GetUIntAttr(mContent, nsGkAtoms::aria_colindex, &index)) {
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return GroupPos(0, index, count);
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}
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return GroupPos();
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}
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