Adjust ChromeVox (spoken feedback) strings and make it possible for announcemen

chrome/browser/accessibility/accessibility_extension_api.cc

 // Copyright (c) 2012 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/accessibility/accessibility_extension_api.h"
 
 #include "base/json/json_writer.h"
 #include "base/strings/string_number_conversions.h"
 #include "base/values.h"
 #include "chrome/browser/accessibility/accessibility_extension_api_constants.h"
 #include "chrome/browser/extensions/api/tabs/tabs_constants.h"
 #include "chrome/browser/extensions/event_router.h"
+#include "chrome/browser/extensions/extension_host.h"
+#include "chrome/browser/extensions/extension_service.h"
 #include "chrome/browser/extensions/extension_system.h"
 #include "chrome/browser/extensions/extension_tab_util.h"
 #include "chrome/browser/infobars/confirm_infobar_delegate.h"
 #include "chrome/browser/infobars/infobar_delegate.h"
 #include "chrome/browser/infobars/infobar_service.h"
 #include "chrome/browser/profiles/profile.h"
 #include "chrome/common/extensions/api/experimental_accessibility.h"
+#include "chrome/common/extensions/background_info.h"
 #include "content/public/browser/browser_accessibility_state.h"
+#include "extensions/browser/lazy_background_task_queue.h"
 #include "extensions/common/error_utils.h"
 
 namespace keys = extension_accessibility_api_constants;
 namespace experimental_accessibility =
     extensions::api::experimental_accessibility;
 
 // Returns the AccessibilityControlInfo serialized into a JSON string,
 // consisting of an array of a single object of type AccessibilityObject,
 // as defined in the accessibility extension api's json schema.
 scoped_ptr<ListValue> ControlInfoToEventArguments(
@@ skipping 126 matching lines @@
 }
 
 void ExtensionAccessibilityEventRouter::OnMenuClosed(
     const AccessibilityMenuInfo* info) {
   scoped_ptr<ListValue> args(ControlInfoToEventArguments(info));
   DispatchEvent(info->profile(),
                 experimental_accessibility::OnMenuClosed::kEventName,
                 args.Pass());
 }
 
+void ExtensionAccessibilityEventRouter::OnChromeVoxLoadStateChanged(
+    Profile* profile,
+    bool loading,
+    bool make_announcements) {
+  scoped_ptr<base::ListValue> event_args(new base::ListValue());
+  event_args->Append(base::Value::CreateBooleanValue(loading));
+  event_args->Append(base::Value::CreateBooleanValue(make_announcements));
+  ExtensionAccessibilityEventRouter::DispatchEventToChromeVox(profile,
+      experimental_accessibility::OnChromeVoxLoadStateChanged::kEventName,
+      event_args.Pass());
+}
+
+// Static.
+void ExtensionAccessibilityEventRouter::DispatchEventToChromeVox(
+    Profile* profile,
+    const char* event_name,
+    scoped_ptr<base::ListValue> event_args) {
+  extensions::ExtensionSystem* system =
+      extensions::ExtensionSystem::Get(profile);
+  if (!system)
+    return;
+  scoped_ptr<extensions::Event> event(new extensions::Event(event_name,
+                                                            event_args.Pass()));
+  system->event_router()->DispatchEventToExtension(
+      extension_misc::kChromeVoxExtensionId, event.Pass());
+}
+
 void ExtensionAccessibilityEventRouter::DispatchEvent(
     Profile* profile,
     const char* event_name,
     scoped_ptr<base::ListValue> event_args) {
   if (enabled_ && profile &&
       extensions::ExtensionSystem::Get(profile)->event_router()) {
     scoped_ptr<extensions::Event> event(new extensions::Event(
         event_name, event_args.Pass()));
     extensions::ExtensionSystem::Get(profile)->event_router()->
         BroadcastEvent(event.Pass());
@@ skipping 68 matching lines @@
       DictionaryValue* alert_value = new DictionaryValue;
       const string16 message_text = confirm_infobar_delegate->GetMessageText();
       alert_value->SetString(keys::kMessageKey, message_text);
       alerts_value->Append(alert_value);
     }
   }
 
   SetResult(alerts_value);
   return true;
 }