| // Copyright 2018 The Chromium Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #ifndef ASH_MEDIA_MEDIA_NOTIFICATION_CONTROLLER_H_ |
| #define ASH_MEDIA_MEDIA_NOTIFICATION_CONTROLLER_H_ |
| |
| #include <map> |
| #include <memory> |
| #include <string> |
| |
| #include "ash/ash_export.h" |
| #include "ash/media/media_notification_item.h" |
| #include "base/macros.h" |
| #include "mojo/public/cpp/bindings/binding.h" |
| #include "services/media_session/public/mojom/audio_focus.mojom.h" |
| #include "services/media_session/public/mojom/media_controller.mojom.h" |
| |
| namespace service_manager { |
| class Connector; |
| } // namespace service_manager |
| |
| namespace ash { |
| |
| class MediaNotificationItem; |
| class MediaNotificationView; |
| |
| // MediaNotificationController will show/hide media notifications when media |
| // sessions are active. These notifications will show metadata and playback |
| // controls. |
| class ASH_EXPORT MediaNotificationController |
| : public media_session::mojom::AudioFocusObserver { |
| public: |
| // The name of the histogram used to record the number of concurrent media |
| // notifications. |
| static const char kCountHistogramName[]; |
| |
| explicit MediaNotificationController(service_manager::Connector* connector); |
| ~MediaNotificationController() override; |
| |
| // media_session::mojom::AudioFocusObserver: |
| void OnFocusGained( |
| media_session::mojom::AudioFocusRequestStatePtr session) override; |
| void OnFocusLost( |
| media_session::mojom::AudioFocusRequestStatePtr session) override; |
| |
| void SetView(const std::string& id, MediaNotificationView* view); |
| |
| MediaNotificationItem* GetItem(const std::string& id) { |
| auto it = notifications_.find(id); |
| DCHECK(it != notifications_.end()); |
| return &it->second; |
| } |
| |
| // Called by |MediaNotificationItem| when it displays a new media |
| // notification. It will record the concurrent number of media notifications |
| // displayed. |
| void RecordConcurrentNotificationCount(); |
| |
| private: |
| media_session::mojom::MediaControllerManagerPtr controller_manager_ptr_; |
| |
| mojo::Binding<media_session::mojom::AudioFocusObserver> |
| audio_focus_observer_binding_{this}; |
| |
| // Stores a |MediaNotificationItem| for each media session keyed by its |
| // |request_id| in string format. |
| std::map<const std::string, MediaNotificationItem> notifications_; |
| |
| DISALLOW_COPY_AND_ASSIGN(MediaNotificationController); |
| }; |
| |
| } // namespace ash |
| |
| #endif // ASH_MEDIA_MEDIA_NOTIFICATION_CONTROLLER_H_ |