Merge Chromium src@r53293

Change-Id: Ia79acf8670f385cee48c45b0a75371d8e950af34

1 files changed, 636 insertions, 0 deletions

diff --git a/chrome/browser/gtk/accessibility_event_router_gtk.cc b/chrome/browser/gtk/accessibility_event_router_gtk.cc
new file mode 100644
index 0000000..606fd40
--- /dev/null
+++ b/chrome/browser/gtk/accessibility_event_router_gtk.cc
@@ -0,0 +1,636 @@
+// Copyright (c) 2010 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "chrome/browser/gtk/accessibility_event_router_gtk.h"
+
+#include "base/basictypes.h"
+#include "base/callback.h"
+#include "base/message_loop.h"
+#include "base/stl_util-inl.h"
+#include "chrome/browser/extensions/extension_accessibility_api.h"
+#include "chrome/browser/gtk/gtk_chrome_link_button.h"
+#include "chrome/browser/profile.h"
+#include "chrome/common/notification_type.h"
+
+namespace {
+
+//
+// Callbacks triggered by signals on gtk widgets.
+//
+
+gboolean OnWidgetFocused(GSignalInvocationHint *ihint,
+                         guint n_param_values,
+                         const GValue* param_values,
+                         gpointer user_data) {
+  GtkWidget* widget = GTK_WIDGET(g_value_get_object(param_values));
+  reinterpret_cast<AccessibilityEventRouterGtk*>(user_data)->
+      DispatchAccessibilityNotification(
+          widget, NotificationType::ACCESSIBILITY_CONTROL_FOCUSED);
+  return TRUE;
+}
+
+gboolean OnButtonClicked(GSignalInvocationHint *ihint,
+                         guint n_param_values,
+                         const GValue* param_values,
+                         gpointer user_data) {
+  GtkWidget* widget = GTK_WIDGET(g_value_get_object(param_values));
+  // Skip toggle buttons because we're also listening on "toggle" events.
+  if (GTK_IS_TOGGLE_BUTTON(widget))
+    return true;
+  reinterpret_cast<AccessibilityEventRouterGtk*>(user_data)->
+      DispatchAccessibilityNotification(
+          widget, NotificationType::ACCESSIBILITY_CONTROL_ACTION);
+  return TRUE;
+}
+
+gboolean OnButtonToggled(GSignalInvocationHint *ihint,
+                         guint n_param_values,
+                         const GValue* param_values,
+                         gpointer user_data) {
+  GtkWidget* widget = GTK_WIDGET(g_value_get_object(param_values));
+  bool checked = gtk_toggle_button_get_active(GTK_TOGGLE_BUTTON(widget));
+  // Skip propagating an "uncheck" event for a radio button because it's
+  // redundant; there will always be a corresponding "check" event for
+  // a different radio button the group.
+  if (GTK_IS_RADIO_BUTTON(widget) && !checked)
+    return true;
+  reinterpret_cast<AccessibilityEventRouterGtk*>(user_data)->
+      DispatchAccessibilityNotification(
+          widget, NotificationType::ACCESSIBILITY_CONTROL_ACTION);
+  return TRUE;
+}
+
+gboolean OnPageSwitched(GSignalInvocationHint *ihint,
+                        guint n_param_values,
+                        const GValue* param_values,
+                        gpointer user_data) {
+  GtkWidget* widget = GTK_WIDGET(g_value_get_object(param_values));
+  // The page hasn't switched yet, so defer calling
+  // DispatchAccessibilityNotification.
+  reinterpret_cast<AccessibilityEventRouterGtk*>(user_data)->
+      PostDispatchAccessibilityNotification(
+          widget, NotificationType::ACCESSIBILITY_CONTROL_ACTION);
+  return TRUE;
+}
+
+gboolean OnComboBoxChanged(GSignalInvocationHint *ihint,
+                           guint n_param_values,
+                           const GValue* param_values,
+                           gpointer user_data) {
+  GtkWidget* widget = GTK_WIDGET(g_value_get_object(param_values));
+  if (!GTK_IS_COMBO_BOX(widget))
+    return true;
+  reinterpret_cast<AccessibilityEventRouterGtk*>(user_data)->
+      DispatchAccessibilityNotification(
+          widget, NotificationType::ACCESSIBILITY_CONTROL_ACTION);
+  return TRUE;
+}
+
+gboolean OnTreeViewCursorChanged(GSignalInvocationHint *ihint,
+                                 guint n_param_values,
+                                 const GValue* param_values,
+                                 gpointer user_data) {
+  GtkWidget* widget = GTK_WIDGET(g_value_get_object(param_values));
+  if (!GTK_IS_TREE_VIEW(widget)) {
+    return true;
+  }
+  reinterpret_cast<AccessibilityEventRouterGtk*>(user_data)->
+      DispatchAccessibilityNotification(
+          widget, NotificationType::ACCESSIBILITY_CONTROL_ACTION);
+  return TRUE;
+}
+
+gboolean OnEntryChanged(GSignalInvocationHint *ihint,
+                        guint n_param_values,
+                        const GValue* param_values,
+                        gpointer user_data) {
+  GtkWidget* widget = GTK_WIDGET(g_value_get_object(param_values));
+  if (!GTK_IS_ENTRY(widget)) {
+    return TRUE;
+  }
+  // The text hasn't changed yet, so defer calling
+  // DispatchAccessibilityNotification.
+  reinterpret_cast<AccessibilityEventRouterGtk*>(user_data)->
+      PostDispatchAccessibilityNotification(
+          widget, NotificationType::ACCESSIBILITY_TEXT_CHANGED);
+  return TRUE;
+}
+
+gboolean OnTextBufferChanged(GSignalInvocationHint *ihint,
+                             guint n_param_values,
+                             const GValue* param_values,
+                             gpointer user_data) {
+  // The text hasn't changed yet, so defer calling
+  // DispatchAccessibilityNotification.
+  reinterpret_cast<AccessibilityEventRouterGtk*>(user_data)->
+      PostDispatchAccessibilityNotification(
+          NULL, NotificationType::ACCESSIBILITY_TEXT_CHANGED);
+  return TRUE;
+}
+
+gboolean OnTextViewChanged(GSignalInvocationHint *ihint,
+                           guint n_param_values,
+                           const GValue* param_values,
+                           gpointer user_data) {
+  GtkWidget* widget = GTK_WIDGET(g_value_get_object(param_values));
+  if (!GTK_IS_TEXT_VIEW(widget)) {
+    return TRUE;
+  }
+  // The text hasn't changed yet, so defer calling
+  // DispatchAccessibilityNotification.
+  reinterpret_cast<AccessibilityEventRouterGtk*>(user_data)->
+      PostDispatchAccessibilityNotification(
+          widget, NotificationType::ACCESSIBILITY_TEXT_CHANGED);
+  return TRUE;
+}
+
+gboolean OnMenuMoveCurrent(GSignalInvocationHint *ihint,
+                           guint n_param_values,
+                           const GValue* param_values,
+                           gpointer user_data) {
+  // Get the widget (the GtkMenu).
+  GtkWidget* widget = GTK_WIDGET(g_value_get_object(param_values));
+
+  // Moving may move us into or out of a submenu, so after the menu
+  // item moves, |widget| may not be valid anymore. To be safe, then,
+  // find the topmost ancestor of this menu and post the notification
+  // dispatch on that menu. Then the dispatcher will recurse into submenus
+  // as necessary to figure out which item is focused.
+  while (GTK_MENU_SHELL(widget)->parent_menu_shell)
+    widget = GTK_MENU_SHELL(widget)->parent_menu_shell;
+
+  // The menu item hasn't moved yet, so we want to defer calling
+  // DispatchAccessibilityNotification until after it does.
+  reinterpret_cast<AccessibilityEventRouterGtk*>(user_data)->
+      PostDispatchAccessibilityNotification(
+          widget, NotificationType::ACCESSIBILITY_CONTROL_FOCUSED);
+  return TRUE;
+}
+
+}  // anonymous namespace
+
+AccessibilityEventRouterGtk::AccessibilityEventRouterGtk()
+    : listening_(false),
+      most_recent_profile_(NULL),
+      most_recent_widget_(NULL),
+      method_factory_(this) {
+  // We don't want our event listeners to be installed if accessibility is
+  // disabled. Install listeners so we can install and uninstall them as
+  // needed, then install them now if it's currently enabled.
+  ExtensionAccessibilityEventRouter *extension_event_router =
+      ExtensionAccessibilityEventRouter::GetInstance();
+  extension_event_router->AddOnEnabledListener(
+      NewCallback(this,
+                  &AccessibilityEventRouterGtk::InstallEventListeners));
+  extension_event_router->AddOnDisabledListener(
+      NewCallback(this,
+                  &AccessibilityEventRouterGtk::RemoveEventListeners));
+  if (extension_event_router->IsAccessibilityEnabled()) {
+    InstallEventListeners();
+  }
+}
+
+AccessibilityEventRouterGtk::~AccessibilityEventRouterGtk() {
+  RemoveEventListeners();
+}
+
+// static
+AccessibilityEventRouterGtk* AccessibilityEventRouterGtk::GetInstance() {
+  return Singleton<AccessibilityEventRouterGtk>::get();
+}
+
+void AccessibilityEventRouterGtk::InstallEventListener(
+    const char* signal_name,
+    GType widget_type,
+    GSignalEmissionHook hook_func) {
+  guint signal_id = g_signal_lookup(signal_name, widget_type);
+  gulong hook_id = g_signal_add_emission_hook(
+      signal_id, 0, hook_func, reinterpret_cast<gpointer>(this), NULL);
+  installed_hooks_.push_back(InstalledHook(signal_id, hook_id));
+}
+
+void AccessibilityEventRouterGtk::InstallEventListeners() {
+  // Create and destroy each type of widget we need signals for,
+  // to ensure their modules are loaded, otherwise g_signal_lookup
+  // might fail.
+  g_object_unref(g_object_ref_sink(gtk_combo_box_new()));
+  g_object_unref(g_object_ref_sink(gtk_entry_new()));
+  g_object_unref(g_object_ref_sink(gtk_notebook_new()));
+  g_object_unref(g_object_ref_sink(gtk_toggle_button_new()));
+  g_object_unref(g_object_ref_sink(gtk_tree_view_new()));
+  g_object_unref(g_object_ref_sink(gtk_text_view_new()));
+  g_object_unref(g_object_ref_sink(gtk_text_buffer_new(NULL)));
+
+  // Add signal emission hooks for the events we're interested in.
+  InstallEventListener("clicked", GTK_TYPE_BUTTON, OnButtonClicked);
+  InstallEventListener("changed", GTK_TYPE_COMBO_BOX, OnComboBoxChanged);
+  InstallEventListener("cursor-changed", GTK_TYPE_TREE_VIEW,
+                       OnTreeViewCursorChanged);
+  InstallEventListener("changed", GTK_TYPE_ENTRY, OnEntryChanged);
+  InstallEventListener("insert-text", GTK_TYPE_ENTRY, OnEntryChanged);
+  InstallEventListener("delete-text", GTK_TYPE_ENTRY, OnEntryChanged);
+  InstallEventListener("move-cursor", GTK_TYPE_ENTRY, OnEntryChanged);
+  InstallEventListener("focus-in-event", GTK_TYPE_WIDGET, OnWidgetFocused);
+  InstallEventListener("switch-page", GTK_TYPE_NOTEBOOK, OnPageSwitched);
+  InstallEventListener("toggled", GTK_TYPE_TOGGLE_BUTTON, OnButtonToggled);
+  InstallEventListener("move-current", GTK_TYPE_MENU, OnMenuMoveCurrent);
+  InstallEventListener("changed", GTK_TYPE_TEXT_BUFFER, OnTextBufferChanged);
+  InstallEventListener("move-cursor", GTK_TYPE_TEXT_VIEW, OnTextViewChanged);
+
+  listening_ = true;
+}
+
+void AccessibilityEventRouterGtk::RemoveEventListeners() {
+  for (size_t i = 0; i < installed_hooks_.size(); i++) {
+    g_signal_remove_emission_hook(
+        installed_hooks_[i].signal_id,
+        installed_hooks_[i].hook_id);
+  }
+  installed_hooks_.clear();
+
+  listening_ = false;
+}
+
+void AccessibilityEventRouterGtk::AddRootWidget(
+    GtkWidget* root_widget, Profile* profile) {
+  root_widget_profile_map_[root_widget] = profile;
+}
+
+void AccessibilityEventRouterGtk::RemoveRootWidget(GtkWidget* root_widget) {
+  DCHECK(root_widget_profile_map_.find(root_widget) !=
+         root_widget_profile_map_.end());
+  root_widget_profile_map_.erase(root_widget);
+}
+
+void AccessibilityEventRouterGtk::IgnoreWidget(GtkWidget* widget) {
+  widget_info_map_[widget].ignore = true;
+}
+
+void AccessibilityEventRouterGtk::SetWidgetName(
+    GtkWidget* widget, std::string name) {
+  widget_info_map_[widget].name = name;
+}
+
+void AccessibilityEventRouterGtk::RemoveWidget(GtkWidget* widget) {
+  DCHECK(widget_info_map_.find(widget) != widget_info_map_.end());
+  widget_info_map_.erase(widget);
+}
+
+void AccessibilityEventRouterGtk::FindWidget(
+    GtkWidget* widget, Profile** profile, bool* is_accessible) {
+  *is_accessible = false;
+
+  // First see if it's a descendant of a root widget.
+  for (base::hash_map<GtkWidget*, Profile*>::const_iterator iter =
+           root_widget_profile_map_.begin();
+       iter != root_widget_profile_map_.end();
+       ++iter) {
+    if (gtk_widget_is_ancestor(widget, iter->first)) {
+      *is_accessible = true;
+      if (profile)
+        *profile = iter->second;
+      break;
+    }
+  }
+  if (!*is_accessible)
+    return;
+
+  // Now make sure it's not marked as a widget to be ignored.
+  base::hash_map<GtkWidget*, WidgetInfo>::const_iterator iter =
+      widget_info_map_.find(widget);
+  if (iter != widget_info_map_.end() && iter->second.ignore) {
+    *is_accessible = false;
+    return;
+  }
+}
+
+std::string AccessibilityEventRouterGtk::GetWidgetName(GtkWidget* widget) {
+  base::hash_map<GtkWidget*, WidgetInfo>::const_iterator iter =
+      widget_info_map_.find(widget);
+  if (iter != widget_info_map_.end()) {
+    return iter->second.name;
+  } else {
+    return "";
+  }
+}
+
+void AccessibilityEventRouterGtk::StartListening() {
+  listening_ = true;
+}
+
+void AccessibilityEventRouterGtk::StopListening() {
+  listening_ = false;
+}
+
+void AccessibilityEventRouterGtk::DispatchAccessibilityNotification(
+    GtkWidget* widget, NotificationType type) {
+  if (!listening_)
+    return;
+
+  Profile* profile = NULL;
+  bool is_accessible;
+
+  // Special case: when we get ACCESSIBILITY_TEXT_CHANGED, we don't get
+  // a pointer to the widget, so we try to retrieve it from the most recent
+  // widget.
+  if (widget == NULL &&
+      type == NotificationType::ACCESSIBILITY_TEXT_CHANGED &&
+      most_recent_widget_ &&
+      GTK_IS_TEXT_VIEW(most_recent_widget_)) {
+    widget = most_recent_widget_;
+  }
+
+  if (!widget)
+    return;
+
+  most_recent_widget_ = widget;
+  FindWidget(widget, &profile, &is_accessible);
+  if (profile)
+    most_recent_profile_ = profile;
+
+  // Special case: a GtkMenu isn't associated with any particular
+  // toplevel window, so menu events get routed to the profile of
+  // the most recent event that was associated with a window.
+  if (GTK_IS_MENU_SHELL(widget) && most_recent_profile_) {
+    SendMenuItemNotification(widget, type, most_recent_profile_);
+    return;
+  }
+
+  // In all other cases, return if this widget wasn't marked as accessible.
+  if (!is_accessible)
+    return;
+
+  // The order of these checks matters, because, for example, a radio button
+  // is a subclass of button, and a combo box is a composite control where
+  // the focus event goes to the button that's a child of the combo box.
+  GtkWidget* parent = gtk_widget_get_parent(widget);
+  if (parent && GTK_IS_BUTTON(widget) && GTK_IS_TREE_VIEW(parent)) {
+    // This is a list box column header.  Currently not supported.
+    return;
+  } else if (GTK_IS_COMBO_BOX(widget)) {
+    SendComboBoxNotification(widget, type, profile);
+  } else if (parent && GTK_IS_COMBO_BOX(parent)) {
+    SendComboBoxNotification(parent, type, profile);
+  } else if (GTK_IS_RADIO_BUTTON(widget)) {
+    SendRadioButtonNotification(widget, type, profile);
+  } else if (GTK_IS_TOGGLE_BUTTON(widget)) {
+    SendCheckboxNotification(widget, type, profile);
+  } else if (GTK_IS_BUTTON(widget)) {
+    SendButtonNotification(widget, type, profile);
+  } else if (GTK_IS_ENTRY(widget)) {
+    SendEntryNotification(widget, type, profile);
+  } else if (GTK_IS_TEXT_VIEW(widget)) {
+    SendTextViewNotification(widget, type, profile);
+  } else if (GTK_IS_NOTEBOOK(widget)) {
+    SendTabNotification(widget, type, profile);
+  } else if (GTK_IS_TREE_VIEW(widget)) {
+    SendListBoxNotification(widget, type, profile);
+  } else {
+    // If we have no idea what this control is, return and skip the
+    // temporary pause in event listening.
+    return;
+  }
+
+  // After this method returns, additional signal handlers will run,
+  // which will sometimes generate additional signals.  To avoid
+  // generating redundant accessibility notifications for the same
+  // initial event, stop listening to all signals generated from now
+  // until this posted task runs.
+  StopListening();
+  MessageLoop::current()->PostTask(
+      FROM_HERE, method_factory_.NewRunnableMethod(
+          &AccessibilityEventRouterGtk::StartListening));
+}
+
+void AccessibilityEventRouterGtk::PostDispatchAccessibilityNotification(
+    GtkWidget* widget, NotificationType type) {
+  MessageLoop::current()->PostTask(
+      FROM_HERE, method_factory_.NewRunnableMethod(
+          &AccessibilityEventRouterGtk::DispatchAccessibilityNotification,
+          widget,
+          type));
+}
+
+void AccessibilityEventRouterGtk::SendRadioButtonNotification(
+    GtkWidget* widget, NotificationType type, Profile* profile) {
+  // Get the radio button name
+  std::string button_name = GetWidgetName(widget);
+  if (button_name.empty() && gtk_button_get_label(GTK_BUTTON(widget)))
+    button_name = gtk_button_get_label(GTK_BUTTON(widget));
+
+  // Get its state
+  bool checked = gtk_toggle_button_get_active(GTK_TOGGLE_BUTTON(widget));
+
+  // Get the index of this radio button and the total number of
+  // radio buttons in the group.
+  int item_count = 0;
+  int item_index = -1;
+  for (GSList* group = gtk_radio_button_get_group(GTK_RADIO_BUTTON(widget));
+       group;
+       group = group->next) {
+    if (group->data == widget) {
+      item_index = item_count;
+    }
+    item_count++;
+  }
+  item_index = item_count - 1 - item_index;
+
+  AccessibilityRadioButtonInfo info(
+      profile, button_name, checked, item_index, item_count);
+  SendAccessibilityNotification(type, &info);
+}
+
+void AccessibilityEventRouterGtk::SendCheckboxNotification(
+    GtkWidget* widget, NotificationType type, Profile* profile) {
+  std::string button_name = GetWidgetName(widget);
+  if (button_name.empty() && gtk_button_get_label(GTK_BUTTON(widget)))
+    button_name = gtk_button_get_label(GTK_BUTTON(widget));
+  bool checked = gtk_toggle_button_get_active(GTK_TOGGLE_BUTTON(widget));
+  AccessibilityCheckboxInfo info(profile, button_name, checked);
+  SendAccessibilityNotification(type, &info);
+}
+
+void AccessibilityEventRouterGtk::SendButtonNotification(
+    GtkWidget* widget, NotificationType type, Profile* profile) {
+  std::string button_name = GetWidgetName(widget);
+  if (button_name.empty() && gtk_button_get_label(GTK_BUTTON(widget)))
+    button_name = gtk_button_get_label(GTK_BUTTON(widget));
+  AccessibilityButtonInfo info(profile, button_name);
+  SendAccessibilityNotification(type, &info);
+}
+
+void AccessibilityEventRouterGtk::SendEntryNotification(
+    GtkWidget* widget, NotificationType type, Profile* profile) {
+  std::string name = GetWidgetName(widget);
+  std::string value = gtk_entry_get_text(GTK_ENTRY(widget));
+  gint start_pos;
+  gint end_pos;
+  gtk_editable_get_selection_bounds(GTK_EDITABLE(widget), &start_pos, &end_pos);
+  AccessibilityTextBoxInfo info(profile, name, false);
+  info.SetValue(value, start_pos, end_pos);
+  SendAccessibilityNotification(type, &info);
+}
+
+void AccessibilityEventRouterGtk::SendTextViewNotification(
+    GtkWidget* widget, NotificationType type, Profile* profile) {
+  std::string name = GetWidgetName(widget);
+  GtkTextBuffer* buffer = gtk_text_view_get_buffer(GTK_TEXT_VIEW(widget));
+  GtkTextIter start, end;
+  gtk_text_buffer_get_bounds(buffer, &start, &end);
+  gchar* text = gtk_text_buffer_get_text(buffer, &start, &end, false);
+  std::string value = text;
+  g_free(text);
+  GtkTextIter sel_start, sel_end;
+  gtk_text_buffer_get_selection_bounds(buffer, &sel_start, &sel_end);
+  int start_pos = gtk_text_iter_get_offset(&sel_start);
+  int end_pos = gtk_text_iter_get_offset(&sel_end);
+  AccessibilityTextBoxInfo info(profile, name, false);
+  info.SetValue(value, start_pos, end_pos);
+  SendAccessibilityNotification(type, &info);
+}
+
+void AccessibilityEventRouterGtk::SendTabNotification(
+    GtkWidget* widget, NotificationType type, Profile* profile) {
+  int index = gtk_notebook_get_current_page(GTK_NOTEBOOK(widget));
+  int page_count = gtk_notebook_get_n_pages(GTK_NOTEBOOK(widget));
+  GtkWidget* page = gtk_notebook_get_nth_page(GTK_NOTEBOOK(widget), index);
+  GtkWidget* label = gtk_notebook_get_tab_label(GTK_NOTEBOOK(widget), page);
+  std::string name = GetWidgetName(widget);
+  if (name.empty() && gtk_label_get_text(GTK_LABEL(label))) {
+    name = gtk_label_get_text(GTK_LABEL(label));
+  }
+  AccessibilityTabInfo info(profile, name, index, page_count);
+  SendAccessibilityNotification(type, &info);
+}
+
+void AccessibilityEventRouterGtk::SendComboBoxNotification(
+    GtkWidget* widget, NotificationType type, Profile* profile) {
+  // Get the index of the selected item.  Will return -1 if no item is
+  // active, which matches the semantics of the extension API.
+  int index = gtk_combo_box_get_active(GTK_COMBO_BOX(widget));
+
+  // Get the number of items.
+  GtkTreeModel* model = gtk_combo_box_get_model(GTK_COMBO_BOX(widget));
+  int count = gtk_tree_model_iter_n_children(model, NULL);
+
+  // Get the value of the current item, if possible.  Note that the
+  // model behind the combo box could be arbitrarily complex in theory,
+  // but this code just handles flat lists where the first string column
+  // contains the display value.
+  std::string value;
+  int string_column_index = -1;
+  for (int i = 0; i < gtk_tree_model_get_n_columns(model); i++) {
+    if (gtk_tree_model_get_column_type(model, i) == G_TYPE_STRING) {
+      string_column_index = i;
+      break;
+    }
+  }
+  if (string_column_index) {
+    GtkTreeIter iter;
+    if (gtk_combo_box_get_active_iter(GTK_COMBO_BOX(widget), &iter)) {
+      GValue gvalue = { 0 };
+      gtk_tree_model_get_value(model, &iter, string_column_index, &gvalue);
+      const char* string_value = g_value_get_string(&gvalue);
+      if (string_value) {
+        value = string_value;
+      }
+      g_value_unset(&gvalue);
+    }
+  } else {
+    // Otherwise this must be a gtk_combo_box_text, in which case this
+    // function will return the value of the current item, instead.
+    value = gtk_combo_box_get_active_text(GTK_COMBO_BOX(widget));
+  }
+
+  // Get the name of this combo box.
+  std::string name = GetWidgetName(widget);
+
+  // Send the notification.
+  AccessibilityComboBoxInfo info(profile, name, value, index, count);
+  SendAccessibilityNotification(type, &info);
+}
+
+void AccessibilityEventRouterGtk::SendListBoxNotification(
+    GtkWidget* widget, NotificationType type, Profile* profile) {
+  // Get the number of items.
+  GtkTreeModel* model = gtk_tree_view_get_model(GTK_TREE_VIEW(widget));
+  int count = gtk_tree_model_iter_n_children(model, NULL);
+
+  // Get the current selected index and its value.
+  int index = -1;
+  std::string value;
+  GtkTreePath* path;
+  gtk_tree_view_get_cursor(GTK_TREE_VIEW(widget), &path, NULL);
+  if (path != NULL) {
+    gint* indices = gtk_tree_path_get_indices(path);
+    if (indices)
+      index = indices[0];
+
+    GtkTreeIter iter;
+    if (gtk_tree_model_get_iter(model, &iter, path)) {
+      for (int i = 0; i < gtk_tree_model_get_n_columns(model); i++) {
+        if (gtk_tree_model_get_column_type(model, i) == G_TYPE_STRING) {
+          GValue gvalue = { 0 };
+          gtk_tree_model_get_value(model, &iter, i, &gvalue);
+          const char* string_value = g_value_get_string(&gvalue);
+          if (string_value) {
+            if (!value.empty())
+              value += " ";
+            value += string_value;
+          }
+          g_value_unset(&gvalue);
+        }
+      }
+    }
+
+    gtk_tree_path_free(path);
+  }
+
+  // Get the name of this control.
+  std::string name = GetWidgetName(widget);
+
+  // Send the notification.
+  AccessibilityListBoxInfo info(profile, name, value, index, count);
+  SendAccessibilityNotification(type, &info);
+}
+
+void AccessibilityEventRouterGtk::SendMenuItemNotification(
+    GtkWidget* menu, NotificationType type, Profile* profile) {
+  // Find the focused menu item, recursing into submenus as needed.
+  GtkWidget* menu_item = GTK_MENU_SHELL(menu)->active_menu_item;
+  if (!menu_item)
+    return;
+  GtkWidget* submenu = gtk_menu_item_get_submenu(GTK_MENU_ITEM(menu_item));
+  while (submenu && GTK_MENU_SHELL(submenu)->active_menu_item) {
+    menu = submenu;
+    menu_item = GTK_MENU_SHELL(menu)->active_menu_item;
+    if (!menu_item)
+      return;
+    submenu = gtk_menu_item_get_submenu(GTK_MENU_ITEM(menu_item));
+  }
+
+  // Figure out the item index and total number of items.
+  GList* items = gtk_container_get_children(GTK_CONTAINER(menu));
+  guint count = g_list_length(items);
+  int index = g_list_index(items, static_cast<gconstpointer>(menu_item));
+
+  // Get the menu item's label.
+  std::string name;
+#if GTK_CHECK_VERSION(2, 16, 0)
+  name = gtk_menu_item_get_label(GTK_MENU_ITEM(menu_item));
+#else
+  GList* children = gtk_container_get_children(GTK_CONTAINER(menu_item));
+  for (GList* l = g_list_first(children); l != NULL; l = g_list_next(l)) {
+    GtkWidget* child = static_cast<GtkWidget*>(l->data);
+    if (GTK_IS_LABEL(child)) {
+      name = gtk_label_get_label(GTK_LABEL(child));
+      break;
+    }
+  }
+#endif
+
+  // Send the event.
+  AccessibilityMenuItemInfo info(profile, name, submenu != NULL, index, count);
+  SendAccessibilityNotification(type, &info);
+}