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-rw-r--r--dom/media/mediacontrol/MediaControlKeyManager.h73
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diff --git a/dom/media/mediacontrol/MediaControlKeyManager.h b/dom/media/mediacontrol/MediaControlKeyManager.h
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+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this file,
+ * You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#ifndef DOM_MEDIA_MEDIACONTROL_MEDIACONTROLKEYMANAGER_H_
+#define DOM_MEDIA_MEDIACONTROL_MEDIACONTROLKEYMANAGER_H_
+
+#include "MediaControlKeySource.h"
+#include "MediaEventSource.h"
+#include "nsIObserver.h"
+
+namespace mozilla::dom {
+
+/**
+ * MediaControlKeyManager is a wrapper of MediaControlKeySource, which
+ * is used to manage creating and destroying a real media keys event source.
+ *
+ * It monitors the amount of the media controller in MediaService, and would
+ * create the event source when there is any existing controller and destroy it
+ * when there is no controller.
+ */
+class MediaControlKeyManager final : public MediaControlKeySource,
+ public MediaControlKeyListener {
+ public:
+ NS_INLINE_DECL_REFCOUNTING(MediaControlKeyManager, override)
+
+ MediaControlKeyManager();
+
+ // MediaControlKeySource methods
+ bool Open() override;
+ void Close() override;
+ bool IsOpened() const override;
+
+ void SetPlaybackState(MediaSessionPlaybackState aState) override;
+ MediaSessionPlaybackState GetPlaybackState() const override;
+
+ // MediaControlKeyListener methods
+ void OnActionPerformed(const MediaControlAction& aAction) override;
+
+ void SetMediaMetadata(const MediaMetadataBase& aMetadata) override;
+ void SetSupportedMediaKeys(const MediaKeysArray& aSupportedKeys) override;
+ void SetEnableFullScreen(bool aIsEnabled) override;
+ void SetEnablePictureInPictureMode(bool aIsEnabled) override;
+ void SetPositionState(const PositionState& aState) override;
+
+ private:
+ ~MediaControlKeyManager();
+ void Shutdown();
+
+ class Observer final : public nsIObserver {
+ public:
+ NS_DECL_ISUPPORTS
+ NS_DECL_NSIOBSERVER
+ explicit Observer(MediaControlKeyManager* aManager);
+
+ protected:
+ virtual ~Observer() = default;
+
+ MediaControlKeyManager* MOZ_OWNING_REF mManager;
+ };
+ RefPtr<Observer> mObserver;
+ void OnPreferenceChange();
+
+ bool StartMonitoringControlKeys();
+ void StopMonitoringControlKeys();
+ RefPtr<MediaControlKeySource> mEventSource;
+ MediaMetadataBase mMetadata;
+ nsTArray<MediaControlKey> mSupportedKeys;
+};
+
+} // namespace mozilla::dom
+
+#endif