| // 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/binding.h" |
| #include "third_party/blink/public/platform/modules/mediasession/media_session.mojom-blink.h" |
| #include "third_party/blink/renderer/core/execution_context/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/bindings/trace_wrapper_member.h" |
| #include "third_party/blink/renderer/platform/heap/handle.h" |
| #include "third_party/blink/renderer/platform/wtf/text/wtf_string.h" |
| |
| namespace blink { |
| |
| class ExecutionContext; |
| class ExceptionState; |
| class MediaMetadata; |
| class V8MediaSessionActionHandler; |
| |
| class MODULES_EXPORT MediaSession final |
| : public ScriptWrappable, |
| public ContextClient, |
| blink::mojom::blink::MediaSessionClient { |
| USING_GARBAGE_COLLECTED_MIXIN(MediaSession); |
| DEFINE_WRAPPERTYPEINFO(); |
| USING_PRE_FINALIZER(MediaSession, Dispose); |
| |
| public: |
| static MediaSession* Create(ExecutionContext*); |
| |
| explicit MediaSession(ExecutionContext*); |
| |
| void Dispose(); |
| |
| void setPlaybackState(const String&); |
| String playbackState(); |
| |
| void setMetadata(MediaMetadata*); |
| MediaMetadata* metadata() const; |
| |
| void setActionHandler(const String& action, |
| V8MediaSessionActionHandler*, |
| 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(blink::Visitor*) override; |
| |
| private: |
| friend class V8MediaSession; |
| friend class MediaSessionTest; |
| |
| enum class ActionChangeType { |
| kActionEnabled, |
| kActionDisabled, |
| }; |
| |
| void NotifyActionChange(const String& action, ActionChangeType); |
| |
| // blink::mojom::blink::MediaSessionClient implementation. |
| void DidReceiveAction( |
| media_session::mojom::blink::MediaSessionAction) override; |
| |
| // Returns null when the ExecutionContext is not document. |
| mojom::blink::MediaSessionService* GetService(); |
| |
| mojom::blink::MediaSessionPlaybackState playback_state_; |
| Member<MediaMetadata> metadata_; |
| HeapHashMap<String, TraceWrapperMember<V8MediaSessionActionHandler>> |
| action_handlers_; |
| mojom::blink::MediaSessionServicePtr service_; |
| mojo::Binding<blink::mojom::blink::MediaSessionClient> client_binding_; |
| }; |
| |
| } // namespace blink |
| |
| #endif // THIRD_PARTY_BLINK_RENDERER_MODULES_MEDIASESSION_MEDIA_SESSION_H_ |