1 files changed, 142 insertions, 0 deletions
diff --git a/accessible/generic/BaseAccessibles.cpp b/accessible/generic/BaseAccessibles.cpp
new file mode 100644
index 0000000000..520f54e96b
--- /dev/null
+++ b/accessible/generic/BaseAccessibles.cpp
@@ -0,0 +1,142 @@
+/* -*- 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 "BaseAccessibles.h"
+
+#include "States.h"
+
+using namespace mozilla::a11y;
+
+////////////////////////////////////////////////////////////////////////////////
+// LeafAccessible
+////////////////////////////////////////////////////////////////////////////////
+
+LeafAccessible::LeafAccessible(nsIContent* aContent, DocAccessible* aDoc)
+    : AccessibleWrap(aContent, aDoc) {
+  mStateFlags |= eNoKidsFromDOM;
+}
+
+////////////////////////////////////////////////////////////////////////////////
+// LeafAccessible: LocalAccessible public
+
+LocalAccessible* LeafAccessible::LocalChildAtPoint(
+    int32_t aX, int32_t aY, EWhichChildAtPoint aWhichChild) {
+  // Don't walk into leaf accessibles.
+  return this;
+}
+
+bool LeafAccessible::InsertChildAt(uint32_t aIndex, LocalAccessible* aChild) {
+  MOZ_ASSERT_UNREACHABLE("InsertChildAt called on leaf accessible!");
+  return false;
+}
+
+bool LeafAccessible::RemoveChild(LocalAccessible* aChild) {
+  MOZ_ASSERT_UNREACHABLE("RemoveChild called on leaf accessible!");
+  return false;
+}
+
+bool LeafAccessible::IsAcceptableChild(nsIContent* aEl) const {
+  // No children for leaf accessible.
+  return false;
+}
+
+////////////////////////////////////////////////////////////////////////////////
+// LinkableAccessible
+////////////////////////////////////////////////////////////////////////////////
+
+////////////////////////////////////////////////////////////////////////////////
+// LinkableAccessible. nsIAccessible
+
+void LinkableAccessible::TakeFocus() const {
+  if (const LocalAccessible* actionAcc = ActionWalk()) {
+    actionAcc->TakeFocus();
+  } else {
+    AccessibleWrap::TakeFocus();
+  }
+}
+
+uint64_t LinkableAccessible::NativeLinkState() const {
+  bool isLink;
+  const LocalAccessible* actionAcc = ActionWalk(&isLink);
+  if (isLink) {
+    return states::LINKED | (actionAcc->LinkState() & states::TRAVERSED);
+  }
+
+  return 0;
+}
+
+void LinkableAccessible::Value(nsString& aValue) const {
+  aValue.Truncate();
+
+  LocalAccessible::Value(aValue);
+  if (!aValue.IsEmpty()) {
+    return;
+  }
+
+  bool isLink;
+  const LocalAccessible* actionAcc = ActionWalk(&isLink);
+  if (isLink) {
+    actionAcc->Value(aValue);
+  }
+}
+
+const LocalAccessible* LinkableAccessible::ActionWalk(bool* aIsLink,
+                                                      bool* aIsOnclick) const {
+  if (aIsOnclick) {
+    *aIsOnclick = false;
+  }
+  if (aIsLink) {
+    *aIsLink = false;
+  }
+
+  if (HasPrimaryAction()) {
+    if (aIsOnclick) {
+      *aIsOnclick = true;
+    }
+
+    return nullptr;
+  }
+
+  const Accessible* actionAcc = ActionAncestor();
+
+  const LocalAccessible* localAction =
+      actionAcc ? const_cast<Accessible*>(actionAcc)->AsLocal() : nullptr;
+
+  if (!localAction) {
+    return nullptr;
+  }
+
+  if (localAction->LinkState() & states::LINKED) {
+    if (aIsLink) {
+      *aIsLink = true;
+    }
+  } else if (aIsOnclick) {
+    *aIsOnclick = true;
+  }
+
+  return localAction;
+}
+
+KeyBinding LinkableAccessible::AccessKey() const {
+  if (const LocalAccessible* actionAcc =
+          const_cast<LinkableAccessible*>(this)->ActionWalk()) {
+    return actionAcc->AccessKey();
+  }
+
+  return LocalAccessible::AccessKey();
+}
+
+////////////////////////////////////////////////////////////////////////////////
+// DummyAccessible
+////////////////////////////////////////////////////////////////////////////////
+
+uint64_t DummyAccessible::NativeState() const { return 0; }
+uint64_t DummyAccessible::NativeInteractiveState() const { return 0; }
+
+uint64_t DummyAccessible::NativeLinkState() const { return 0; }
+
+bool DummyAccessible::NativelyUnavailable() const { return false; }
+
+void DummyAccessible::ApplyARIAState(uint64_t* aState) const {}