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