chrome/browser/chromeos/extensions/media_player_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 "chrome/browser/chromeos/extensions/media_player_event_router.h"
   6
   7 #include "base/memory/singleton.h"
   8 #include "content/public/browser/browser_context.h"
   9 #include "extensions/browser/event_router.h"
  10 #include "extensions/browser/extension_system.h"
  11
  12 namespace extensions {
  13
  14 namespace {
  15
  16 void BroadcastEvent(content::BrowserContext* context,
  17                     events::HistogramValue histogram_value,
  18                     const std::string& event_name) {
  19   if (context && EventRouter::Get(context)) {
  20     scoped_ptr<base::ListValue> args(new base::ListValue());
  21     scoped_ptr<Event> event(
  22         new Event(histogram_value, event_name, args.Pass()));
  23     EventRouter::Get(context)->BroadcastEvent(event.Pass());
  24   }
  25 }
  26
  27 }  // namespace
  28
  29 MediaPlayerEventRouter::MediaPlayerEventRouter(content::BrowserContext* context)
  30     : browser_context_(context) {}
  31
  32 MediaPlayerEventRouter::~MediaPlayerEventRouter() {
  33 }
  34
  35 void MediaPlayerEventRouter::NotifyNextTrack() {
  36   BroadcastEvent(browser_context_, events::MEDIA_PLAYER_PRIVATE_ON_NEXT_TRACK,
  37                  "mediaPlayerPrivate.onNextTrack");
  38 }
  39
  40 void MediaPlayerEventRouter::NotifyPrevTrack() {
  41   BroadcastEvent(browser_context_, events::MEDIA_PLAYER_PRIVATE_ON_PREV_TRACK,
  42                  "mediaPlayerPrivate.onPrevTrack");
  43 }
  44
  45 void MediaPlayerEventRouter::NotifyTogglePlayState() {
  46   BroadcastEvent(browser_context_,
  47                  events::MEDIA_PLAYER_PRIVATE_ON_TOGGLE_PLAY_STATE,
  48                  "mediaPlayerPrivate.onTogglePlayState");
  49 }
  50
  51 }  // namespace extensions