1 files changed, 79 insertions, 0 deletions
diff --git a/accessible/generic/ARIAGridAccessible.cpp b/accessible/generic/ARIAGridAccessible.cpp
new file mode 100644
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+++ b/accessible/generic/ARIAGridAccessible.cpp
@@ -0,0 +1,79 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#include "ARIAGridAccessible.h"
+
+#include <stdint.h>
+#include "LocalAccessible-inl.h"
+#include "AccAttributes.h"
+#include "AccIterator.h"
+#include "mozilla/a11y/TableAccessible.h"
+#include "mozilla/a11y/TableCellAccessible.h"
+#include "nsAccessibilityService.h"
+#include "nsAccUtils.h"
+#include "nsGkAtoms.h"
+#include "Role.h"
+#include "States.h"
+
+using namespace mozilla;
+using namespace mozilla::a11y;
+
+////////////////////////////////////////////////////////////////////////////////
+// ARIAGridCellAccessible
+////////////////////////////////////////////////////////////////////////////////
+
+////////////////////////////////////////////////////////////////////////////////
+// Constructor
+
+ARIAGridCellAccessible::ARIAGridCellAccessible(nsIContent* aContent,
+                                               DocAccessible* aDoc)
+    : HyperTextAccessibleWrap(aContent, aDoc) {
+  mGenericTypes |= eTableCell;
+}
+
+////////////////////////////////////////////////////////////////////////////////
+// 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();
+
+  // We only need to expose table-cell-index to clients. If we're in the content
+  // process, we don't need this, so building a CachedTableAccessible is very
+  // wasteful. This will be exposed by RemoteAccessible in the parent process
+  // instead.
+  if (!IPCAccessibilityActive()) {
+    if (const TableCellAccessible* cell = AsTableCell()) {
+      TableAccessible* table = cell->Table();
+      const uint32_t row = cell->RowIdx();
+      const uint32_t col = cell->ColIdx();
+      const int32_t cellIdx = table->CellIndexAt(row, col);
+      if (cellIdx != -1) {
+        attributes->SetAttribute(nsGkAtoms::tableCellIndex, cellIdx);
+      }
+    }
+  }
+
+  return attributes.forget();
+}