input_method_event_router.cc revision a36e5920737c6adbddd3e43b760e5de8431db6e0 
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
18namespace chromeos {
19
20ExtensionInputMethodEventRouter::ExtensionInputMethodEventRouter() {
21  input_method::InputMethodManager::Get()->AddObserver(this);
22}
23
24ExtensionInputMethodEventRouter::~ExtensionInputMethodEventRouter() {
25  input_method::InputMethodManager::Get()->RemoveObserver(this);
26}
27
28void 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
53