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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 ScriptedIdleTaskController_h
#define ScriptedIdleTaskController_h
#include "core/dom/IdleDeadline.h"
#include "core/dom/SuspendableObject.h"
#include "platform/Timer.h"
#include "platform/heap/Handle.h"
#include "wtf/Vector.h"
namespace blink {
class ExecutionContext;
class IdleRequestCallback;
class IdleRequestOptions;
class ScriptedIdleTaskController
: public GarbageCollectedFinalized<ScriptedIdleTaskController>,
public SuspendableObject {
USING_GARBAGE_COLLECTED_MIXIN(ScriptedIdleTaskController);
public:
static ScriptedIdleTaskController* create(ExecutionContext* context) {
return new ScriptedIdleTaskController(context);
}
~ScriptedIdleTaskController();
DECLARE_TRACE();
using CallbackId = int;
int registerCallback(IdleRequestCallback*, const IdleRequestOptions&);
void cancelCallback(CallbackId);
// SuspendableObject interface.
void contextDestroyed(ExecutionContext*) override;
void suspend() override;
void resume() override;
void callbackFired(CallbackId,
double deadlineSeconds,
IdleDeadline::CallbackType);
private:
explicit ScriptedIdleTaskController(ExecutionContext*);
int nextCallbackId();
bool isValidCallbackId(int id) {
using Traits = HashTraits<CallbackId>;
return !Traits::isDeletedValue(id) &&
!WTF::isHashTraitsEmptyValue<Traits, CallbackId>(id);
}
void runCallback(CallbackId,
double deadlineSeconds,
IdleDeadline::CallbackType);
WebScheduler* m_scheduler; // Not owned.
HeapHashMap<CallbackId, Member<IdleRequestCallback>> m_callbacks;
Vector<CallbackId> m_pendingTimeouts;
CallbackId m_nextCallbackId;
bool m_suspended;
};
} // namespace blink
#endif // ScriptedIdleTaskController_h
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