widget/cocoa/MediaHardwareKeysEventSourceMacMediaCenter.h

   1 /* This Source Code Form is subject to the terms of the Mozilla Public
   2  * License, v. 2.0. If a copy of the MPL was not distributed with this
   3  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
   4
   5 #ifndef WIDGET_COCOA_MEDIAHARDWAREKEYSEVENTSOURCEMACMEDIACENTER_H_
   6 #define WIDGET_COCOA_MEDIAHARDWAREKEYSEVENTSOURCEMACMEDIACENTER_H_
   7
   8 #include "mozilla/dom/FetchImageHelper.h"
   9 #include "mozilla/dom/MediaControlKeySource.h"
  10
  11 #ifdef __OBJC__
  12 @class MPRemoteCommandEvent;
  13 #else
  14 typedef struct objc_object MPRemoteCommandEvent;
  15 #endif
  16 enum MPRemoteCommandHandlerStatus : long;
  17
  18 namespace mozilla {
  19 namespace widget {
  20
  21 typedef MPRemoteCommandHandlerStatus (^MediaCenterEventHandler)(
  22     MPRemoteCommandEvent* event);
  23
  24 class MediaHardwareKeysEventSourceMacMediaCenter final
  25     : public mozilla::dom::MediaControlKeySource {
  26  public:
  27   NS_INLINE_DECL_REFCOUNTING(MediaHardwareKeysEventSourceMacMediaCenter,
  28                              override)
  29   MediaHardwareKeysEventSourceMacMediaCenter();
  30
  31   MediaCenterEventHandler CreatePlayPauseHandler();
  32   MediaCenterEventHandler CreateNextTrackHandler();
  33   MediaCenterEventHandler CreatePreviousTrackHandler();
  34   MediaCenterEventHandler CreatePlayHandler();
  35   MediaCenterEventHandler CreatePauseHandler();
  36   MediaCenterEventHandler CreateChangePlaybackPositionHandler();
  37
  38   bool Open() override;
  39   void Close() override;
  40   bool IsOpened() const override;
  41   void SetPlaybackState(dom::MediaSessionPlaybackState aState) override;
  42   void SetMediaMetadata(const dom::MediaMetadataBase& aMetadata) override;
  43   void SetSupportedMediaKeys(const MediaKeysArray& aSupportedKeys) override;
  44   void SetPositionState(const Maybe<dom::PositionState>& aState) override;
  45
  46  private:
  47   ~MediaHardwareKeysEventSourceMacMediaCenter();
  48   void BeginListeningForEvents();
  49   void EndListeningForEvents();
  50   void HandleEvent(const dom::MediaControlAction& aAction);
  51   void UpdatePositionInfo();
  52
  53   bool mOpened = false;
  54   Maybe<dom::PositionState> mPositionState;
  55   dom::MediaMetadataBase mMediaMetadata;
  56
  57   // Should only be used on main thread
  58   UniquePtr<dom::FetchImageHelper> mImageFetcher;
  59   MozPromiseRequestHolder<dom::ImagePromise> mImageFetchRequest;
  60
  61   nsString mFetchingUrl;
  62   nsString mCurrentImageUrl;
  63   size_t mNextImageIndex = 0;
  64
  65   void LoadImageAtIndex(const size_t aIndex);
  66
  67   MediaCenterEventHandler mPlayPauseHandler;
  68   MediaCenterEventHandler mNextTrackHandler;
  69   MediaCenterEventHandler mPreviousTrackHandler;
  70   MediaCenterEventHandler mPauseHandler;
  71   MediaCenterEventHandler mPlayHandler;
  72   MediaCenterEventHandler mChangePlaybackPositionHandler;
  73 };
  74
  75 }  // namespace widget
  76 }  // namespace mozilla
  77
  78 #endif  // WIDGET_COCOA_MEDIAHARDWAREKEYSEVENTSOURCEMACMEDIACENTER_H_