Add an accessibility API for events raised outside of the web content.

chrome/browser/gtk/options/options_window_gtk.cc

 // Copyright (c) 2006-2009 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/options_window.h"
 
 #include <gtk/gtk.h>
 
 #include "app/l10n_util.h"
 #include "base/message_loop.h"
+#include "base/scoped_ptr.h"
 #include "chrome/browser/browser_list.h"
 #include "chrome/browser/browser_process.h"
 #include "chrome/browser/browser_window.h"
+#include "chrome/browser/gtk/accessible_widget_helper_gtk.h"
 #include "chrome/browser/gtk/options/advanced_page_gtk.h"
 #include "chrome/browser/gtk/options/content_page_gtk.h"
 #include "chrome/browser/gtk/options/general_page_gtk.h"
 #include "chrome/browser/profile.h"
 #include "chrome/browser/window_sizer.h"
+#include "chrome/common/accessibility_events.h"
 #include "chrome/common/gtk_util.h"
+#include "chrome/common/notification_service.h"
 #include "chrome/common/pref_member.h"
 #include "chrome/common/pref_names.h"
 #include "chrome/common/pref_service.h"
 #include "grit/chromium_strings.h"
 #include "grit/generated_resources.h"
 
 #if defined(OS_CHROMEOS)
 #include "chrome/browser/chromeos/internet_page_view.h"
 #include "chrome/browser/chromeos/system_page_view.h"
 #endif
@@ skipping 31 matching lines @@
 
   // The content page.
   ContentPageGtk content_page_;
 
   // The advanced (user data) page.
   AdvancedPageGtk advanced_page_;
 
   // The last page the user was on when they opened the Options window.
   IntegerPrefMember last_selected_page_;
 
+  scoped_ptr<AccessibleWidgetHelper> accessibility_widget_helper_;
+
   DISALLOW_COPY_AND_ASSIGN(OptionsWindowGtk);
 };
 
 // The singleton options window object.
 static OptionsWindowGtk* options_window = NULL;
 
 ///////////////////////////////////////////////////////////////////////////////
 // OptionsWindowGtk, public:
 
 OptionsWindowGtk::OptionsWindowGtk(Profile* profile)
       // Always show preferences for the original profile. Most state when off
       // the record comes from the original profile, but we explicitly use
       // the original profile to avoid potential problems.
     : profile_(profile->GetOriginalProfile()),
       general_page_(profile_),
       content_page_(profile_),
       advanced_page_(profile_) {
+
   // We don't need to observe changes in this value.
   last_selected_page_.Init(prefs::kOptionsWindowLastTabIndex,
                            g_browser_process->local_state(), NULL);
 
   dialog_ = gtk_dialog_new_with_buttons(
       l10n_util::GetStringFUTF8(IDS_OPTIONS_DIALOG_TITLE,
           WideToUTF16(l10n_util::GetString(IDS_PRODUCT_NAME))).c_str(),
       // Prefs window is shared between all browser windows.
       NULL,
       // Non-modal.
       GTK_DIALOG_NO_SEPARATOR,
       GTK_STOCK_CLOSE,
       GTK_RESPONSE_CLOSE,
       NULL);
   gtk_window_set_default_size(GTK_WINDOW(dialog_), 500, -1);
   // Allow browser windows to go in front of the options dialog in metacity.
   gtk_window_set_type_hint(GTK_WINDOW(dialog_), GDK_WINDOW_TYPE_HINT_NORMAL);
   gtk_box_set_spacing(GTK_BOX(GTK_DIALOG(dialog_)->vbox),
                       gtk_util::kContentAreaSpacing);
 
+  accessibility_widget_helper_.reset(new AccessibleWidgetHelper(
+      dialog_, profile));
+
   notebook_ = gtk_notebook_new();
 
 #if defined(OS_CHROMEOS)
   gtk_notebook_append_page(
       GTK_NOTEBOOK(notebook_),
       (new chromeos::SystemPageView(profile_))->WrapInGtkWidget(),
       gtk_label_new(
           l10n_util::GetStringUTF8(IDS_OPTIONS_SYSTEM_TAB_LABEL).c_str()));
 
   gtk_notebook_append_page(
@@ skipping 123 matching lines @@
   MessageLoop::current()->DeleteSoon(FROM_HERE, window);
 }
 
 ///////////////////////////////////////////////////////////////////////////////
 // Factory/finder method:
 
 void ShowOptionsWindow(OptionsPage page,
                        OptionsGroup highlight_group,
                        Profile* profile) {
   DCHECK(profile);
+
   // If there's already an existing options window, activate it and switch to
   // the specified page.
   if (!options_window) {
+    // Creating and initializing a bunch of controls generates a bunch of
+    // spurious events as control values change. Temporarily suppress
+    // accessibility events until the window is created.
+    profile->PauseAccessibilityEvents();
+
+    // Create the options window.
     options_window = new OptionsWindowGtk(profile);
+
+    // Resume accessibility events.
+    profile->ResumeAccessibilityEvents();
   }
   options_window->ShowOptionsPage(page, highlight_group);
+
+  std::string name = l10n_util::GetStringFUTF8(
+      IDS_OPTIONS_DIALOG_TITLE,
+      WideToUTF16(l10n_util::GetString(IDS_PRODUCT_NAME)));
+  AccessibilityWindowInfo info(profile, name);
+
+  NotificationService::current()->Notify(
+      NotificationType::ACCESSIBILITY_WINDOW_OPENED,
+      Source<Profile>(profile),
+      Details<AccessibilityWindowInfo>(&info));
 }