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1 // Copyright 2016 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_COMMON_MEDIA_CONTROLLER_H_ | |
6 #define ASH_COMMON_MEDIA_CONTROLLER_H_ | |
7 | |
8 #include "ash/public/interfaces/media.mojom.h" | |
9 #include "base/macros.h" | |
10 #include "base/observer_list.h" | |
11 #include "mojo/public/cpp/bindings/associated_binding.h" | |
12 #include "mojo/public/cpp/bindings/binding_set.h" | |
13 | |
14 namespace ash { | |
15 | |
16 // Forwards notifications from the MediaController to observers. | |
17 class MediaCaptureObserver { | |
18 public: | |
19 // Called when media capture state has changed. | |
20 virtual void OnMediaCaptureChanged( | |
21 const std::vector<mojom::MediaCaptureState>& capture_states) = 0; | |
22 | |
23 protected: | |
24 virtual ~MediaCaptureObserver() {} | |
25 }; | |
26 | |
27 // Provides the MediaController interface to the outside world. This lets a | |
28 // consumer of ash provide a MediaClient, which we will dispatch to if one has | |
29 // been provided to us. | |
30 class MediaController : public mojom::MediaController, | |
31 public mojom::MediaClient { | |
32 public: | |
33 MediaController(); | |
34 ~MediaController() override; | |
35 | |
36 void BindRequest(mojom::MediaControllerRequest request); | |
37 | |
38 void AddObserver(MediaCaptureObserver* observer); | |
39 void RemoveObserver(MediaCaptureObserver* observer); | |
40 | |
41 // mojom::MediaClient: | |
42 void HandleMediaNextTrack() override; | |
43 void HandleMediaPlayPause() override; | |
44 void HandleMediaPrevTrack() override; | |
45 void RequestCaptureState() override; | |
46 | |
47 private: | |
48 friend class MultiProfileMediaTrayItemTest; | |
49 | |
50 // mojom::MediaController: | |
51 void SetClient(mojom::MediaClientAssociatedPtrInfo client) override; | |
52 void NotifyCaptureState( | |
53 const std::vector<mojom::MediaCaptureState>& capture_states) override; | |
54 | |
55 mojo::BindingSet<mojom::MediaController> bindings_; | |
56 | |
57 mojom::MediaClientAssociatedPtr client_; | |
58 | |
59 base::ObserverList<MediaCaptureObserver> observers_; | |
60 | |
61 DISALLOW_COPY_AND_ASSIGN(MediaController); | |
62 }; | |
63 | |
64 } // namespace ash | |
65 | |
66 #endif // ASH_COMMON_MEDIA_CONTROLLER_H_ | |
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