1 files changed, 45 insertions, 0 deletions
diff --git a/accessible/base/Filters.cpp b/accessible/base/Filters.cpp
new file mode 100644
index 0000000000..24ddcd9865
--- /dev/null
+++ b/accessible/base/Filters.cpp
@@ -0,0 +1,45 @@
+/* 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 "Filters.h"
+
+#include "LocalAccessible-inl.h"
+#include "nsAccUtils.h"
+#include "Role.h"
+#include "States.h"
+
+using namespace mozilla::a11y;
+using namespace mozilla::a11y::filters;
+
+uint32_t filters::GetSelected(LocalAccessible* aAccessible) {
+  if (aAccessible->State() & states::SELECTED) return eMatch | eSkipSubtree;
+
+  return eSkip;
+}
+
+uint32_t filters::GetSelectable(LocalAccessible* aAccessible) {
+  if (aAccessible->InteractiveState() & states::SELECTABLE) {
+    return eMatch | eSkipSubtree;
+  }
+
+  return eSkip;
+}
+
+uint32_t filters::GetRow(LocalAccessible* aAccessible) {
+  if (aAccessible->IsTableRow()) return eMatch | eSkipSubtree;
+
+  // Look for rows inside rowgroup or wrapping text containers.
+  a11y::role role = aAccessible->Role();
+  const nsRoleMapEntry* roleMapEntry = aAccessible->ARIARoleMap();
+  if (role == roles::GROUPING ||
+      (aAccessible->IsGenericHyperText() && !roleMapEntry)) {
+    return eSkip;
+  }
+
+  return eSkipSubtree;
+}
+
+uint32_t filters::GetCell(LocalAccessible* aAccessible) {
+  return aAccessible->IsTableCell() ? eMatch : eSkipSubtree;
+}