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// Copyright 2015 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 THIRD_PARTY_BLINK_RENDERER_MODULES_MEDIASESSION_MEDIA_SESSION_H_
#define THIRD_PARTY_BLINK_RENDERER_MODULES_MEDIASESSION_MEDIA_SESSION_H_
#include <memory>
#include "mojo/public/cpp/bindings/remote.h"
#include "third_party/blink/public/mojom/mediasession/media_session.mojom-blink.h"
#include "third_party/blink/renderer/core/execution_context/execution_context_lifecycle_observer.h"
#include "third_party/blink/renderer/modules/modules_export.h"
#include "third_party/blink/renderer/platform/bindings/script_wrappable.h"
#include "third_party/blink/renderer/platform/heap/handle.h"
#include "third_party/blink/renderer/platform/mojo/heap_mojo_receiver.h"
#include "third_party/blink/renderer/platform/mojo/heap_mojo_wrapper_mode.h"
#include "third_party/blink/renderer/platform/wtf/text/wtf_string.h"
namespace base {
class TickClock;
} // namespace base
namespace blink {
class ExecutionContext;
class ExceptionState;
class MediaMetadata;
class MediaPositionState;
class V8MediaSessionActionHandler;
class MODULES_EXPORT MediaSession final
: public ScriptWrappable,
public ExecutionContextClient,
public blink::mojom::blink::MediaSessionClient {
USING_GARBAGE_COLLECTED_MIXIN(MediaSession);
DEFINE_WRAPPERTYPEINFO();
public:
explicit MediaSession(ExecutionContext*);
void setPlaybackState(const String&);
String playbackState();
void setMetadata(MediaMetadata*);
MediaMetadata* metadata() const;
void setActionHandler(const String& action,
V8MediaSessionActionHandler*,
ExceptionState&);
void setPositionState(MediaPositionState*, ExceptionState&);
// Called by the MediaMetadata owned by |this| when it has updates. Also used
// internally when a new MediaMetadata object is set.
void OnMetadataChanged();
void Trace(Visitor*) override;
private:
friend class V8MediaSession;
friend class MediaSessionTest;
enum class ActionChangeType {
kActionEnabled,
kActionDisabled,
};
void NotifyActionChange(const String& action, ActionChangeType);
base::TimeDelta GetPositionNow() const;
void RecalculatePositionState(bool was_set);
// blink::mojom::blink::MediaSessionClient implementation.
void DidReceiveAction(media_session::mojom::blink::MediaSessionAction,
mojom::blink::MediaSessionActionDetailsPtr) override;
// Returns null when the ExecutionContext is not document.
mojom::blink::MediaSessionService* GetService();
const base::TickClock* clock_ = nullptr;
mojom::blink::MediaSessionPlaybackState playback_state_;
media_session::mojom::blink::MediaPositionPtr position_state_;
double declared_playback_rate_ = 0.0;
Member<MediaMetadata> metadata_;
HeapHashMap<String, Member<V8MediaSessionActionHandler>> action_handlers_;
mojo::Remote<mojom::blink::MediaSessionService> service_;
HeapMojoReceiver<blink::mojom::blink::MediaSessionClient,
MediaSession,
HeapMojoWrapperMode::kWithoutContextObserver>
client_receiver_;
};
} // namespace blink
#endif // THIRD_PARTY_BLINK_RENDERER_MODULES_MEDIASESSION_MEDIA_SESSION_H_
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