chrome/browser/ui/webui/options/media_devices_selection_handler.h

   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 #ifndef CHROME_BROWSER_UI_WEBUI_OPTIONS_MEDIA_DEVICES_SELECTION_HANDLER_H_
   6 #define CHROME_BROWSER_UI_WEBUI_OPTIONS_MEDIA_DEVICES_SELECTION_HANDLER_H_
   7
   8 #include "chrome/browser/media/media_capture_devices_dispatcher.h"
   9 #include "chrome/browser/ui/webui/options/options_ui.h"
  10 #include "content/public/browser/web_contents.h"
  11 #include "grit/generated_resources.h"
  12
  13 namespace options {
  14
  15 // Handler for media devices selection in content settings.
  16 class MediaDevicesSelectionHandler
  17     : public MediaCaptureDevicesDispatcher::Observer,
  18       public OptionsPageUIHandler {
  19  public:
  20   MediaDevicesSelectionHandler();
  21   virtual ~MediaDevicesSelectionHandler();
  22
  23   // OptionsPageUIHandler implementation.
  24   virtual void GetLocalizedValues(base::DictionaryValue* values) OVERRIDE;
  25   virtual void InitializePage() OVERRIDE;
  26   virtual void RegisterMessages() OVERRIDE;
  27
  28   // MediaCaptureDevicesDispatcher::Observer implementation.
  29   virtual void OnUpdateAudioDevices(
  30       const content::MediaStreamDevices& devices) OVERRIDE;
  31   virtual void OnUpdateVideoDevices(
  32       const content::MediaStreamDevices& devices) OVERRIDE;
  33
  34  private:
  35   enum DeviceType {
  36     AUDIO,
  37     VIDEO,
  38   };
  39
  40   // Sets the default audio/video capture device for media. |args| includes the
  41   // media type (kAuudio/kVideo) and the unique id of the new default device
  42   // that the user has chosen.
  43   void SetDefaultCaptureDevice(const base::ListValue* args);
  44
  45   // Helpers methods to update the device menus.
  46   void UpdateDevicesMenuForType(DeviceType type);
  47   void UpdateDevicesMenu(DeviceType type,
  48                          const content::MediaStreamDevices& devices);
  49
  50   DISALLOW_COPY_AND_ASSIGN(MediaDevicesSelectionHandler);
  51 };
  52
  53 }  // namespace options
  54
  55 #endif  // CHROME_BROWSER_UI_WEBUI_OPTIONS_MEDIA_DEVICES_SELECTION_HANDLER_H_