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// Copyright 2019 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_MODULES_WAKE_LOCK_WAKE_LOCK_SENTINEL_H_
#define THIRD_PARTY_BLINK_RENDERER_MODULES_WAKE_LOCK_WAKE_LOCK_SENTINEL_H_
#include "base/gtest_prod_util.h"
#include "third_party/blink/renderer/bindings/core/v8/active_script_wrappable.h"
#include "third_party/blink/renderer/bindings/core/v8/script_promise.h"
#include "third_party/blink/renderer/bindings/modules/v8/v8_wake_lock_type.h"
#include "third_party/blink/renderer/core/dom/events/event_target.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/modules/wake_lock/wake_lock_type.h"
#include "third_party/blink/renderer/platform/heap/garbage_collected.h"
#include "third_party/blink/renderer/platform/wtf/text/atomic_string.h"
namespace blink {
class ExecutionContext;
class ScriptState;
class WakeLockManager;
class MODULES_EXPORT WakeLockSentinel final
: public EventTarget,
public ActiveScriptWrappable<WakeLockSentinel>,
public ExecutionContextLifecycleObserver {
DEFINE_WRAPPERTYPEINFO();
public:
WakeLockSentinel(ScriptState* script_state,
V8WakeLockType::Enum type,
WakeLockManager* manager);
~WakeLockSentinel() override;
// Web-exposed interfaces
DEFINE_ATTRIBUTE_EVENT_LISTENER(release, kRelease)
ScriptPromise<IDLUndefined> release(ScriptState*);
bool released() const;
V8WakeLockType type() const;
// EventTarget overrides.
ExecutionContext* GetExecutionContext() const override;
const AtomicString& InterfaceName() const override;
void Trace(Visitor*) const override;
// ActiveScriptWrappable overrides.
bool HasPendingActivity() const override;
// ExecutionContextLifecycleObserver overrides.
void ContextDestroyed() override;
private:
friend class WakeLockManager;
// This function, which only has any effect once, detaches this sentinel from
// its |manager_|, and fires a "release" event.
// It is implemented separately from release() itself so that |manager_| can
// call it without triggering the creation of a new ScriptPromise, as
// it is not relevant to |manager_| and this function may be called from a
// context where |script_state_|'s context is no longer valid.
void DoRelease();
Member<WakeLockManager> manager_;
bool released_ = false;
const V8WakeLockType::Enum type_;
FRIEND_TEST_ALL_PREFIXES(WakeLockSentinelTest, MultipleReleaseCalls);
};
} // namespace blink
#endif // THIRD_PARTY_BLINK_RENDERER_MODULES_WAKE_LOCK_WAKE_LOCK_SENTINEL_H_
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