chromium/third_party/blink/renderer/core/html/media/video_wake_lock.h

// Copyright 2018 The Chromium Authors
// 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_CORE_HTML_MEDIA_VIDEO_WAKE_LOCK_H_
#define THIRD_PARTY_BLINK_RENDERER_CORE_HTML_MEDIA_VIDEO_WAKE_LOCK_H_

#include "mojo/public/cpp/bindings/remote.h"
#include "services/device/public/mojom/wake_lock.mojom-blink.h"
#include "third_party/blink/renderer/core/core_export.h"
#include "third_party/blink/renderer/core/dom/events/native_event_listener.h"
#include "third_party/blink/renderer/core/execution_context/execution_context_lifecycle_state_observer.h"
#include "third_party/blink/renderer/core/html/media/remote_playback_observer.h"
#include "third_party/blink/renderer/core/intersection_observer/intersection_observer.h"
#include "third_party/blink/renderer/core/page/page_visibility_observer.h"
#include "third_party/blink/renderer/platform/heap/collection_support/heap_vector.h"
#include "third_party/blink/renderer/platform/mojo/heap_mojo_remote.h"

namespace blink {

class HTMLVideoElement;

// This is implementing the wake lock logic related to a video element. It will
// take wake lock iif:
//  - the video is playing;
//  - the page is visible OR the video is in picture-in-picture;
//  - the video isn't being remoted;
//  - the execution context is neither paused nor destroyed.
// Each video element implements its own wake lock logic. The service will then
// merge all the requests and take the appropriate system wake lock.
// VideoWakeLock only uses "screen" related wake lock: it prevents the screen
// from locking on mobile or the lockscreen to show up on desktop.
class CORE_EXPORT VideoWakeLock final
    : public NativeEventListener,
      public PageVisibilityObserver,
      public RemotePlaybackObserver,
      public ExecutionContextLifecycleStateObserver { … };

}  // namespace blink

#endif  // THIRD_PARTY_BLINK_RENDERER_CORE_HTML_MEDIA_VIDEO_WAKE_LOCK_H_