src/chrome/browser/chromeos/extensions/input_method_event_router.cc

   1 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #include "input_method_event_router.h"
   6
   7 #include <algorithm>
   8
   9 #include "base/json/json_writer.h"
  10 #include "base/values.h"
  11 #include "chrome/browser/chromeos/extensions/input_method_api.h"
  12 #include "chrome/browser/extensions/event_names.h"
  13 #include "chrome/browser/extensions/event_router.h"
  14 #include "chrome/browser/extensions/extension_system.h"
  15 #include "chrome/browser/profiles/profile_manager.h"
  16 #include "chrome/browser/profiles/profile.h"
  17
  18 namespace chromeos {
  19
  20 ExtensionInputMethodEventRouter::ExtensionInputMethodEventRouter() {
  21   input_method::InputMethodManager::Get()->AddObserver(this);
  22 }
  23
  24 ExtensionInputMethodEventRouter::~ExtensionInputMethodEventRouter() {
  25   input_method::InputMethodManager::Get()->RemoveObserver(this);
  26 }
  27
  28 void ExtensionInputMethodEventRouter::InputMethodChanged(
  29     input_method::InputMethodManager *manager,
  30     bool show_message) {
  31   Profile *profile = ProfileManager::GetDefaultProfile();
  32   extensions::EventRouter *router =
  33       extensions::ExtensionSystem::Get(profile)->event_router();
  34
  35   if (!router->HasEventListener(extensions::event_names::kOnInputMethodChanged))
  36     return;
  37
  38   scoped_ptr<ListValue> args(new ListValue());
  39   StringValue *input_method_name = new StringValue(
  40       extensions::InputMethodAPI::GetInputMethodForXkb(
  41           manager->GetCurrentInputMethod().id()));
  42   args->Append(input_method_name);
  43
  44   // The router will only send the event to extensions that are listening.
  45   scoped_ptr<extensions::Event> event(new extensions::Event(
  46       extensions::event_names::kOnInputMethodChanged, args.Pass()));
  47   event->restrict_to_profile = profile;
  48   extensions::ExtensionSystem::Get(profile)->event_router()->
  49       BroadcastEvent(event.Pass());
  50 }
  51
  52 }  // namespace chromeos