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 "content/public/browser/browser_context.h"
13#include "extensions/browser/event_router.h"
14#include "extensions/browser/extension_system.h"
15
16namespace chromeos {
17
18ExtensionInputMethodEventRouter::ExtensionInputMethodEventRouter(
19    content::BrowserContext* context)
20    : context_(context) {
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  extensions::EventRouter* router = extensions::EventRouter::Get(context_);
32
33  if (!router->HasEventListener(
34          extensions::InputMethodAPI::kOnInputMethodChanged)) {
35    return;
36  }
37
38  scoped_ptr<base::ListValue> args(new base::ListValue());
39  base::StringValue* input_method_name =
40      new base::StringValue(extensions::InputMethodAPI::GetInputMethodForXkb(
41          manager->GetActiveIMEState()->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::InputMethodAPI::kOnInputMethodChanged, args.Pass()));
47  event->restrict_to_browser_context = context_;
48  router->BroadcastEvent(event.Pass());
49}
50
51}  // namespace chromeos
52