ash/media_delegate.h

   1 // Copyright 2013 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 #ifndef ASH_MEDIA_DELEGATE_H_
   6 #define ASH_MEDIA_DELEGATE_H_
   7
   8 namespace content {
   9 class BrowserContext;
  10 }
  11
  12 namespace ash {
  13
  14 enum MediaCaptureState {
  15   MEDIA_CAPTURE_NONE = 0,
  16   MEDIA_CAPTURE_AUDIO = 1 << 0,
  17   MEDIA_CAPTURE_VIDEO = 1 << 1,
  18   MEDIA_CAPTURE_AUDIO_VIDEO = MEDIA_CAPTURE_AUDIO | MEDIA_CAPTURE_VIDEO,
  19 };
  20
  21 // A delegate class to control media playback.
  22 class MediaDelegate {
  23  public:
  24   virtual ~MediaDelegate() {}
  25
  26   // Handles the Next Track Media shortcut key.
  27   virtual void HandleMediaNextTrack() = 0;
  28
  29   // Handles the Play/Pause Toggle Media shortcut key.
  30   virtual void HandleMediaPlayPause() = 0;
  31
  32   // Handles the Previous Track Media shortcut key.
  33   virtual void HandleMediaPrevTrack() = 0;
  34
  35   // Returns the current media recording state of web contents
  36   // that belongs to the |context|.
  37   virtual MediaCaptureState GetMediaCaptureState(
  38       content::BrowserContext* context) = 0;
  39 };
  40
  41 }  // namespace ash
  42
  43 #endif  // ASH_MEDIA_DELEGATE_H_