73 lines
2.3 KiB
C++
73 lines
2.3 KiB
C++
/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this file,
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* You can obtain one at http://mozilla.org/MPL/2.0/. */
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#ifndef DOM_MEDIA_MEDIACONTROL_MEDIACONTROLKEYMANAGER_H_
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#define DOM_MEDIA_MEDIACONTROL_MEDIACONTROLKEYMANAGER_H_
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#include "MediaControlKeySource.h"
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#include "MediaEventSource.h"
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#include "nsIObserver.h"
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namespace mozilla::dom {
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/**
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* MediaControlKeyManager is a wrapper of MediaControlKeySource, which
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* is used to manage creating and destroying a real media keys event source.
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*
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* It monitors the amount of the media controller in MediaService, and would
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* create the event source when there is any existing controller and destroy it
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* when there is no controller.
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*/
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class MediaControlKeyManager final : public MediaControlKeySource,
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public MediaControlKeyListener {
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public:
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NS_INLINE_DECL_REFCOUNTING(MediaControlKeyManager, override)
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MediaControlKeyManager();
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// MediaControlKeySource methods
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bool Open() override;
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void Close() override;
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bool IsOpened() const override;
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void SetPlaybackState(MediaSessionPlaybackState aState) override;
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MediaSessionPlaybackState GetPlaybackState() const override;
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// MediaControlKeyListener methods
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void OnActionPerformed(const MediaControlAction& aAction) override;
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void SetMediaMetadata(const MediaMetadataBase& aMetadata) override;
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void SetSupportedMediaKeys(const MediaKeysArray& aSupportedKeys) override;
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void SetEnableFullScreen(bool aIsEnabled) override;
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void SetEnablePictureInPictureMode(bool aIsEnabled) override;
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void SetPositionState(const Maybe<PositionState>& aState) override;
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private:
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~MediaControlKeyManager();
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void Shutdown();
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class Observer final : public nsIObserver {
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public:
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NS_DECL_ISUPPORTS
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NS_DECL_NSIOBSERVER
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explicit Observer(MediaControlKeyManager* aManager);
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protected:
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virtual ~Observer() = default;
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MediaControlKeyManager* MOZ_OWNING_REF mManager;
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};
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RefPtr<Observer> mObserver;
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void OnPreferenceChange();
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bool StartMonitoringControlKeys();
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void StopMonitoringControlKeys();
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RefPtr<MediaControlKeySource> mEventSource;
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MediaMetadataBase mMetadata;
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nsTArray<MediaControlKey> mSupportedKeys;
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};
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} // namespace mozilla::dom
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#endif
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