зеркало из https://github.com/mozilla/gecko-dev.git
626 строки
18 KiB
C++
626 строки
18 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 "LocalAccessible-inl.h"
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#include "AccAttributes.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 "mozilla/dom/Element.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::ARIAGridAccessible(nsIContent* aContent,
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DocAccessible* aDoc)
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: HyperTextAccessibleWrap(aContent, aDoc) {
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mGenericTypes |= eTable;
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}
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role ARIAGridAccessible::NativeRole() const {
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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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already_AddRefed<AccAttributes> ARIAGridAccessible::NativeAttributes() {
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RefPtr<AccAttributes> attributes = AccessibleWrap::NativeAttributes();
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if (IsProbablyLayoutTable()) {
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attributes->SetAttribute(nsGkAtoms::layout_guess, true);
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}
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return attributes.forget();
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}
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////////////////////////////////////////////////////////////////////////////////
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// Table
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uint32_t ARIAGridAccessible::ColCount() const {
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AccIterator rowIter(this, filters::GetRow);
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LocalAccessible* row = rowIter.Next();
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if (!row) return 0;
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AccIterator cellIter(row, filters::GetCell);
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LocalAccessible* cell = nullptr;
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uint32_t colCount = 0;
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while ((cell = cellIter.Next())) {
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MOZ_ASSERT(cell->IsTableCell(), "No table or grid cell!");
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colCount += cell->AsTableCell()->ColExtent();
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}
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return colCount;
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}
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uint32_t ARIAGridAccessible::RowCount() {
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uint32_t rowCount = 0;
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AccIterator rowIter(this, filters::GetRow);
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while (rowIter.Next()) rowCount++;
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return rowCount;
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}
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LocalAccessible* ARIAGridAccessible::CellAt(uint32_t aRowIndex,
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uint32_t aColumnIndex) {
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LocalAccessible* row = RowAt(aRowIndex);
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if (!row) return nullptr;
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return CellInRowAt(row, aColumnIndex);
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}
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bool ARIAGridAccessible::IsColSelected(uint32_t aColIdx) {
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if (IsARIARole(nsGkAtoms::table)) return false;
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AccIterator rowIter(this, filters::GetRow);
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LocalAccessible* row = rowIter.Next();
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if (!row) return false;
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do {
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if (!nsAccUtils::IsARIASelected(row)) {
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LocalAccessible* cell = CellInRowAt(row, aColIdx);
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if (!cell || !nsAccUtils::IsARIASelected(cell)) 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 ARIAGridAccessible::IsRowSelected(uint32_t aRowIdx) {
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if (IsARIARole(nsGkAtoms::table)) return false;
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LocalAccessible* row = RowAt(aRowIdx);
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if (!row) return false;
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if (!nsAccUtils::IsARIASelected(row)) {
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AccIterator cellIter(row, filters::GetCell);
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LocalAccessible* cell = nullptr;
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while ((cell = cellIter.Next())) {
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if (!nsAccUtils::IsARIASelected(cell)) 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 ARIAGridAccessible::IsCellSelected(uint32_t aRowIdx, uint32_t aColIdx) {
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if (IsARIARole(nsGkAtoms::table)) return false;
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LocalAccessible* row = RowAt(aRowIdx);
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if (!row) return false;
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if (!nsAccUtils::IsARIASelected(row)) {
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LocalAccessible* cell = CellInRowAt(row, aColIdx);
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if (!cell || !nsAccUtils::IsARIASelected(cell)) return false;
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}
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return true;
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}
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uint32_t ARIAGridAccessible::SelectedCellCount() {
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if (IsARIARole(nsGkAtoms::table)) 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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LocalAccessible* 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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LocalAccessible* cell = nullptr;
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while ((cell = cellIter.Next())) {
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if (nsAccUtils::IsARIASelected(cell)) 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 ARIAGridAccessible::SelectedColCount() {
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if (IsARIARole(nsGkAtoms::table)) return 0;
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uint32_t colCount = ColCount();
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if (!colCount) return 0;
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AccIterator rowIter(this, filters::GetRow);
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LocalAccessible* row = rowIter.Next();
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if (!row) 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)) continue;
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AccIterator cellIter(row, filters::GetCell);
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LocalAccessible* cell = nullptr;
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for (uint32_t colIdx = 0; (cell = cellIter.Next()) && colIdx < colCount;
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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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}
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} while ((row = rowIter.Next()));
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return selColCount;
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}
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uint32_t ARIAGridAccessible::SelectedRowCount() {
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if (IsARIARole(nsGkAtoms::table)) return 0;
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uint32_t count = 0;
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AccIterator rowIter(this, filters::GetRow);
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LocalAccessible* 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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LocalAccessible* cell = cellIter.Next();
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if (!cell) 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) count++;
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}
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return count;
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}
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void ARIAGridAccessible::SelectedCells(nsTArray<Accessible*>* aCells) {
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if (IsARIARole(nsGkAtoms::table)) return;
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AccIterator rowIter(this, filters::GetRow);
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LocalAccessible* row = nullptr;
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while ((row = rowIter.Next())) {
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AccIterator cellIter(row, filters::GetCell);
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LocalAccessible* cell = nullptr;
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if (nsAccUtils::IsARIASelected(row)) {
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while ((cell = cellIter.Next())) 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)) aCells->AppendElement(cell);
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}
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}
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}
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void ARIAGridAccessible::SelectedCellIndices(nsTArray<uint32_t>* aCells) {
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if (IsARIARole(nsGkAtoms::table)) return;
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uint32_t colCount = ColCount();
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AccIterator rowIter(this, filters::GetRow);
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LocalAccessible* 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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}
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continue;
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}
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AccIterator cellIter(row, filters::GetCell);
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LocalAccessible* 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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}
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void ARIAGridAccessible::SelectedColIndices(nsTArray<uint32_t>* aCols) {
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if (IsARIARole(nsGkAtoms::table)) return;
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uint32_t colCount = ColCount();
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if (!colCount) return;
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AccIterator rowIter(this, filters::GetRow);
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LocalAccessible* row = rowIter.Next();
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if (!row) 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)) continue;
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AccIterator cellIter(row, filters::GetCell);
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LocalAccessible* cell = nullptr;
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for (uint32_t colIdx = 0; (cell = cellIter.Next()) && colIdx < colCount;
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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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}
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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]) aCols->AppendElement(colIdx);
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}
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}
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void ARIAGridAccessible::SelectedRowIndices(nsTArray<uint32_t>* aRows) {
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if (IsARIARole(nsGkAtoms::table)) return;
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AccIterator rowIter(this, filters::GetRow);
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LocalAccessible* 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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LocalAccessible* cell = cellIter.Next();
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if (!cell) 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) aRows->AppendElement(rowIdx);
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}
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}
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void ARIAGridAccessible::SelectRow(uint32_t aRowIdx) {
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if (IsARIARole(nsGkAtoms::table)) return;
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AccIterator rowIter(this, filters::GetRow);
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LocalAccessible* 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 ARIAGridAccessible::SelectCol(uint32_t aColIdx) {
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if (IsARIARole(nsGkAtoms::table)) return;
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AccIterator rowIter(this, filters::GetRow);
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LocalAccessible* 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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LocalAccessible* cell = CellInRowAt(row, aColIdx);
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if (cell) SetARIASelected(cell, true);
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}
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}
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void ARIAGridAccessible::UnselectRow(uint32_t aRowIdx) {
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if (IsARIARole(nsGkAtoms::table)) return;
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LocalAccessible* row = RowAt(aRowIdx);
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if (row) SetARIASelected(row, false);
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}
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void ARIAGridAccessible::UnselectCol(uint32_t aColIdx) {
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if (IsARIARole(nsGkAtoms::table)) return;
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AccIterator rowIter(this, filters::GetRow);
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LocalAccessible* row = nullptr;
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while ((row = rowIter.Next())) {
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LocalAccessible* cell = CellInRowAt(row, aColIdx);
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if (cell) SetARIASelected(cell, false);
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}
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}
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////////////////////////////////////////////////////////////////////////////////
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// Protected
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nsresult ARIAGridAccessible::SetARIASelected(LocalAccessible* aAccessible,
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bool aIsSelected, bool aNotify) {
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if (IsARIARole(nsGkAtoms::table)) 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(
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kNameSpaceID_None, nsGkAtoms::aria_selected, u"true"_ns, aNotify);
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} else {
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rv = content->AsElement()->SetAttr(
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kNameSpaceID_None, nsGkAtoms::aria_selected, u"false"_ns, aNotify);
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}
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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) 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) 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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LocalAccessible* 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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LocalAccessible* row = aAccessible->LocalParent();
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if (row && row->Role() == roles::ROW && 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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LocalAccessible* 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::ARIARowAccessible(nsIContent* aContent, DocAccessible* aDoc)
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: HyperTextAccessibleWrap(aContent, aDoc) {
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mGenericTypes |= eTableRow;
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}
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role ARIARowAccessible::NativeRole() const {
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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 ARIARowAccessible::GroupPosition() {
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int32_t count = 0, index = 0;
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LocalAccessible* table = nsAccUtils::TableFor(this);
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if (table) {
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if (nsCoreUtils::GetUIntAttr(table->GetContent(), nsGkAtoms::aria_rowcount,
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&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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// Deal with the special case here that tables and grids can have rows
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// which are wrapped in generic text container elements. Exclude tree grids
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// because these are dealt with elsewhere.
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if (table->Role() == roles::TABLE) {
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LocalAccessible* row = nullptr;
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AccIterator rowIter(table, filters::GetRow);
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while ((row = rowIter.Next())) {
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index++;
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if (row == this) {
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break;
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}
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}
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if (row) {
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count = table->AsTable()->RowCount();
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return GroupPos(0, index, count);
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}
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}
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}
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return AccessibleWrap::GroupPosition();
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}
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// LocalAccessible protected
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ENameValueFlag ARIARowAccessible::NativeName(nsString& aName) const {
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// We want to calculate the name from content only if an ARIA role is
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// present. ARIARowAccessible might also be used by tables with
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// display:block; styling, in which case we do not want the name from
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// content.
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if (HasStrongARIARole()) {
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return AccessibleWrap::NativeName(aName);
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}
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return eNameOK;
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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::ARIAGridCellAccessible(nsIContent* aContent,
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DocAccessible* aDoc)
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: HyperTextAccessibleWrap(aContent, aDoc) {
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mGenericTypes |= eTableCell;
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}
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role ARIAGridCellAccessible::NativeRole() const {
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const a11y::role r = GetAccService()->MarkupRole(mContent);
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if (r != role::NOTHING) {
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return r;
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}
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// Special case to handle th elements mapped to ARIA grid cells.
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if (GetContent() && GetContent()->IsHTMLElement(nsGkAtoms::th)) {
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return GetHeaderCellRole(this);
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}
|
|
|
|
return role::CELL;
|
|
}
|
|
|
|
////////////////////////////////////////////////////////////////////////////////
|
|
// TableCell
|
|
|
|
TableAccessible* ARIAGridCellAccessible::Table() const {
|
|
LocalAccessible* table = nsAccUtils::TableFor(Row());
|
|
return table ? table->AsTable() : nullptr;
|
|
}
|
|
|
|
uint32_t ARIAGridCellAccessible::ColIdx() const {
|
|
LocalAccessible* row = Row();
|
|
if (!row) return 0;
|
|
|
|
int32_t indexInRow = IndexInParent();
|
|
uint32_t colIdx = 0;
|
|
for (int32_t idx = 0; idx < indexInRow; idx++) {
|
|
LocalAccessible* cell = row->LocalChildAt(idx);
|
|
if (cell->IsTableCell()) {
|
|
colIdx += cell->AsTableCell()->ColExtent();
|
|
}
|
|
}
|
|
|
|
return colIdx;
|
|
}
|
|
|
|
uint32_t ARIAGridCellAccessible::RowIdx() const { return RowIndexFor(Row()); }
|
|
|
|
bool ARIAGridCellAccessible::Selected() {
|
|
LocalAccessible* row = Row();
|
|
if (!row) return false;
|
|
|
|
return nsAccUtils::IsARIASelected(row) || nsAccUtils::IsARIASelected(this);
|
|
}
|
|
|
|
////////////////////////////////////////////////////////////////////////////////
|
|
// LocalAccessible
|
|
|
|
void ARIAGridCellAccessible::ApplyARIAState(uint64_t* aState) const {
|
|
HyperTextAccessibleWrap::ApplyARIAState(aState);
|
|
|
|
// Return if the gridcell has aria-selected="true".
|
|
if (*aState & states::SELECTED) return;
|
|
|
|
// Check aria-selected="true" on the row.
|
|
LocalAccessible* row = LocalParent();
|
|
if (!row || row->Role() != roles::ROW) return;
|
|
|
|
nsIContent* rowContent = row->GetContent();
|
|
if (nsAccUtils::HasDefinedARIAToken(rowContent, nsGkAtoms::aria_selected) &&
|
|
!nsAccUtils::ARIAAttrValueIs(rowContent->AsElement(),
|
|
nsGkAtoms::aria_selected, nsGkAtoms::_false,
|
|
eCaseMatters)) {
|
|
*aState |= states::SELECTABLE | states::SELECTED;
|
|
}
|
|
}
|
|
|
|
already_AddRefed<AccAttributes> ARIAGridCellAccessible::NativeAttributes() {
|
|
RefPtr<AccAttributes> attributes =
|
|
HyperTextAccessibleWrap::NativeAttributes();
|
|
|
|
// Expose "table-cell-index" attribute.
|
|
LocalAccessible* thisRow = Row();
|
|
if (!thisRow) return attributes.forget();
|
|
|
|
int32_t rowIdx = RowIndexFor(thisRow);
|
|
if (rowIdx == -1) { // error
|
|
return attributes.forget();
|
|
}
|
|
|
|
int32_t colIdx = 0, colCount = 0;
|
|
uint32_t childCount = thisRow->ChildCount();
|
|
for (uint32_t childIdx = 0; childIdx < childCount; childIdx++) {
|
|
LocalAccessible* child = thisRow->LocalChildAt(childIdx);
|
|
if (child == this) colIdx = colCount;
|
|
|
|
roles::Role role = child->Role();
|
|
if (role == roles::CELL || role == roles::GRID_CELL ||
|
|
role == roles::ROWHEADER || role == roles::COLUMNHEADER) {
|
|
colCount++;
|
|
}
|
|
}
|
|
|
|
attributes->SetAttribute(nsGkAtoms::tableCellIndex,
|
|
rowIdx * colCount + colIdx);
|
|
|
|
#ifdef DEBUG
|
|
RefPtr<nsAtom> cppClass = NS_Atomize(u"cppclass"_ns);
|
|
attributes->SetAttributeStringCopy(cppClass, u"ARIAGridCellAccessible"_ns);
|
|
#endif
|
|
|
|
return attributes.forget();
|
|
}
|