1 files changed, 142 insertions, 0 deletions
diff --git a/accessible/xul/XULComboboxAccessible.cpp b/accessible/xul/XULComboboxAccessible.cpp
new file mode 100644
index 0000000000..a020e6f3cb
--- /dev/null
+++ b/accessible/xul/XULComboboxAccessible.cpp
@@ -0,0 +1,142 @@
+/* -*- Mode: C++; tab-width: 4; 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 "XULComboboxAccessible.h"
+
+#include "LocalAccessible-inl.h"
+#include "nsAccessibilityService.h"
+#include "DocAccessible.h"
+#include "nsCoreUtils.h"
+#include "Role.h"
+#include "States.h"
+
+#include "mozilla/dom/Element.h"
+#include "nsIDOMXULMenuListElement.h"
+
+using namespace mozilla::a11y;
+
+////////////////////////////////////////////////////////////////////////////////
+// XULComboboxAccessible
+////////////////////////////////////////////////////////////////////////////////
+
+XULComboboxAccessible::XULComboboxAccessible(nsIContent* aContent,
+                                             DocAccessible* aDoc)
+    : AccessibleWrap(aContent, aDoc) {
+  mGenericTypes |= eCombobox;
+}
+
+role XULComboboxAccessible::NativeRole() const { return roles::COMBOBOX; }
+
+uint64_t XULComboboxAccessible::NativeState() const {
+  // As a nsComboboxAccessible we can have the following states:
+  //     STATE_FOCUSED
+  //     STATE_FOCUSABLE
+  //     STATE_HASPOPUP
+  //     STATE_EXPANDED
+  //     STATE_COLLAPSED
+
+  // Get focus status from base class
+  uint64_t state = LocalAccessible::NativeState();
+
+  nsCOMPtr<nsIDOMXULMenuListElement> menuList = Elm()->AsXULMenuList();
+  if (menuList) {
+    bool isOpen = false;
+    menuList->GetOpen(&isOpen);
+    if (isOpen) {
+      state |= states::EXPANDED;
+    } else {
+      state |= states::COLLAPSED;
+    }
+  }
+
+  return state | states::HASPOPUP;
+}
+
+bool XULComboboxAccessible::IsAcceptableChild(nsIContent* aContent) const {
+  return AccessibleWrap::IsAcceptableChild(aContent) && !aContent->IsText();
+}
+
+void XULComboboxAccessible::Description(nsString& aDescription) const {
+  aDescription.Truncate();
+  // Use description of currently focused option
+  nsCOMPtr<nsIDOMXULMenuListElement> menuListElm = Elm()->AsXULMenuList();
+  if (!menuListElm) return;
+
+  nsCOMPtr<dom::Element> focusedOptionItem;
+  menuListElm->GetSelectedItem(getter_AddRefs(focusedOptionItem));
+  if (focusedOptionItem && mDoc) {
+    LocalAccessible* focusedOptionAcc = mDoc->GetAccessible(focusedOptionItem);
+    if (focusedOptionAcc) focusedOptionAcc->Description(aDescription);
+  }
+}
+
+void XULComboboxAccessible::Value(nsString& aValue) const {
+  aValue.Truncate();
+
+  // The value is the option or text shown entered in the combobox.
+  nsCOMPtr<nsIDOMXULMenuListElement> menuList = Elm()->AsXULMenuList();
+  if (menuList) menuList->GetLabel(aValue);
+}
+
+bool XULComboboxAccessible::HasPrimaryAction() const { return true; }
+
+bool XULComboboxAccessible::DoAction(uint8_t aIndex) const {
+  if (aIndex != XULComboboxAccessible::eAction_Click) return false;
+
+  // Programmaticaly toggle the combo box.
+  nsCOMPtr<nsIDOMXULMenuListElement> menuList = Elm()->AsXULMenuList();
+  if (!menuList) return false;
+
+  bool isDroppedDown = false;
+  menuList->GetOpen(&isDroppedDown);
+  menuList->SetOpen(!isDroppedDown);
+  return true;
+}
+
+void XULComboboxAccessible::ActionNameAt(uint8_t aIndex, nsAString& aName) {
+  aName.Truncate();
+  if (aIndex != XULComboboxAccessible::eAction_Click) return;
+
+  nsCOMPtr<nsIDOMXULMenuListElement> menuList = Elm()->AsXULMenuList();
+  if (!menuList) return;
+
+  bool isDroppedDown = false;
+  menuList->GetOpen(&isDroppedDown);
+  if (isDroppedDown) {
+    aName.AssignLiteral("close");
+  } else {
+    aName.AssignLiteral("open");
+  }
+}
+
+////////////////////////////////////////////////////////////////////////////////
+// Widgets
+
+bool XULComboboxAccessible::IsActiveWidget() const {
+  if (mContent->AsElement()->AttrValueIs(kNameSpaceID_None, nsGkAtoms::editable,
+                                         nsGkAtoms::_true, eIgnoreCase)) {
+    int32_t childCount = mChildren.Length();
+    for (int32_t idx = 0; idx < childCount; idx++) {
+      LocalAccessible* child = mChildren[idx];
+      if (child->Role() == roles::ENTRY) {
+        return FocusMgr()->HasDOMFocus(child->GetContent());
+      }
+    }
+    return false;
+  }
+
+  return FocusMgr()->HasDOMFocus(mContent);
+}
+
+bool XULComboboxAccessible::AreItemsOperable() const {
+  nsCOMPtr<nsIDOMXULMenuListElement> menuListElm = Elm()->AsXULMenuList();
+  if (menuListElm) {
+    bool isOpen = false;
+    menuListElm->GetOpen(&isOpen);
+    return isOpen;
+  }
+
+  return false;
+}