// /*
//  * Copyright (C) 2008 Apple Inc. All Rights Reserved.
//  *
//  * Redistribution and use in source and binary forms, with or without
//  * modification, are permitted provided that the following conditions
//  * are met:
//  * 1. Redistributions of source code must retain the above copyright
//  *    notice, this list of conditions and the following disclaimer.
//  * 2. Redistributions in binary form must reproduce the above copyright
//  *    notice, this list of conditions and the following disclaimer in the
//  *    documentation and/or other materials provided with the distribution.
//  *
//  * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
//  * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
//  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
//  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE INC. OR
//  * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
//  * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
//  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
//  * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
//  * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
//  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
//  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
//  *
//  */

// #include "config.h"
// #include "ActiveDOMObject.h"

// #include "Document.h"
// #include "Event.h"
// #include "EventLoop.h"
// #include "ScriptExecutionContext.h"

// namespace WebCore {

// static inline ScriptExecutionContext* suitableScriptExecutionContext(ScriptExecutionContext* scriptExecutionContext)
// {
//     // For detached documents, make sure we observe their context document instead.
//     // return is<Document>(scriptExecutionContext) ? &downcast<Document>(*scriptExecutionContext).contextDocument() : scriptExecutionContext;
//     return scriptExecutionContext;
// }

// inline ActiveDOMObject::ActiveDOMObject(ScriptExecutionContext* context, CheckedScriptExecutionContextType)
//     : ContextDestructionObserver(context)
// {
//     // ASSERT(!is<Document>(context) || &downcast<Document>(context)->contextDocument() == downcast<Document>(context));
//     if (!context)
//         return;

//     ASSERT(context->isContextThread());
//     context->didCreateActiveDOMObject(*this);
// }

// ActiveDOMObject::ActiveDOMObject(ScriptExecutionContext* scriptExecutionContext)
//     : ActiveDOMObject(suitableScriptExecutionContext(scriptExecutionContext), CheckedScriptExecutionContext)
// {
// }

// // ActiveDOMObject::ActiveDOMObject(Document* document)
// //     : ActiveDOMObject(document ? &document->contextDocument() : nullptr, CheckedScriptExecutionContext)
// // {
// // }

// // ActiveDOMObject::ActiveDOMObject(Document& document)
// //     : ActiveDOMObject(&document.contextDocument(), CheckedScriptExecutionContext)
// // {
// // }

// ActiveDOMObject::~ActiveDOMObject()
// {
//     ASSERT(canCurrentThreadAccessThreadLocalData(m_creationThread));

//     // ActiveDOMObject may be inherited by a sub-class whose life-cycle
//     // exceeds that of the associated ScriptExecutionContext. In those cases,
//     // m_scriptExecutionContext would/should have been nullified by
//     // ContextDestructionObserver::contextDestroyed() (which we implement /
//     // inherit). Hence, we should ensure that this is not 0 before use it
//     // here.
//     auto* context = scriptExecutionContext();
//     if (!context)
//         return;

//     ASSERT(m_suspendIfNeededWasCalled);
//     ASSERT(context->isContextThread());
//     context->willDestroyActiveDOMObject(*this);
// }

// void ActiveDOMObject::suspendIfNeeded()
// {
// #if ASSERT_ENABLED
//     ASSERT(!m_suspendIfNeededWasCalled);
//     m_suspendIfNeededWasCalled = true;
// #endif
//     if (auto* context = scriptExecutionContext())
//         context->suspendActiveDOMObjectIfNeeded(*this);
// }

// #if ASSERT_ENABLED

// void ActiveDOMObject::assertSuspendIfNeededWasCalled() const
// {
//     if (!m_suspendIfNeededWasCalled)
//         WTFLogAlways("Failed to call suspendIfNeeded() for %s", activeDOMObjectName());
//     ASSERT(m_suspendIfNeededWasCalled);
// }

// #endif // ASSERT_ENABLED

// void ActiveDOMObject::suspend(ReasonForSuspension)
// {
// }

// void ActiveDOMObject::resume()
// {
// }

// void ActiveDOMObject::stop()
// {
// }

// bool ActiveDOMObject::isContextStopped() const
// {
//     return !scriptExecutionContext() || scriptExecutionContext()->activeDOMObjectsAreStopped();
// }

// bool ActiveDOMObject::isAllowedToRunScript() const
// {
//     return scriptExecutionContext() && !scriptExecutionContext()->activeDOMObjectsAreStopped() && !scriptExecutionContext()->activeDOMObjectsAreSuspended();
// }

// void ActiveDOMObject::queueTaskInEventLoop(TaskSource source, Function<void()>&& function)
// {
//     auto* context = scriptExecutionContext();
//     if (!context)
//         return;
//     context->eventLoop().queueTask(source, WTFMove(function));
// }

// class ActiveDOMObjectEventDispatchTask : public EventLoopTask {
// public:
//     ActiveDOMObjectEventDispatchTask(TaskSource source, EventLoopTaskGroup& group, ActiveDOMObject& object, Function<void()>&& dispatchEvent)
//         : EventLoopTask(source, group)
//         , m_object(object)
//         , m_dispatchEvent(WTFMove(dispatchEvent))
//     {
//         ++m_object.m_pendingActivityInstanceCount;
//     }

//     ~ActiveDOMObjectEventDispatchTask()
//     {
//         ASSERT(m_object.m_pendingActivityInstanceCount);
//         --m_object.m_pendingActivityInstanceCount;
//     }

//     void execute() final
//     {
//         // If this task executes after the script execution context has been stopped, don't
//         // actually dispatch the event.
//         if (m_object.isAllowedToRunScript())
//             m_dispatchEvent();
//     }

// private:
//     ActiveDOMObject& m_object;
//     Function<void()> m_dispatchEvent;
// };

// void ActiveDOMObject::queueTaskToDispatchEventInternal(EventTarget& target, TaskSource source, Ref<Event>&& event)
// {
//     ASSERT(!event->target() || &target == event->target());
//     auto* context = scriptExecutionContext();
//     if (!context)
//         return;
//     auto& eventLoopTaskGroup = context->eventLoop();
//     auto task = makeUnique<ActiveDOMObjectEventDispatchTask>(source, eventLoopTaskGroup, *this, [target = Ref { target }, event = WTFMove(event)] {
//         target->dispatchEvent(event);
//     });
//     eventLoopTaskGroup.queueTask(WTFMove(task));
// }

// void ActiveDOMObject::queueCancellableTaskToDispatchEventInternal(EventTarget& target, TaskSource source, TaskCancellationGroup& cancellationGroup, Ref<Event>&& event)
// {
//     ASSERT(!event->target() || &target == event->target());
//     auto* context = scriptExecutionContext();
//     if (!context)
//         return;
//     auto& eventLoopTaskGroup = context->eventLoop();
//     auto task = makeUnique<ActiveDOMObjectEventDispatchTask>(source, eventLoopTaskGroup, *this, CancellableTask(cancellationGroup, [target = Ref { target }, event = WTFMove(event)] {
//         target->dispatchEvent(event);
//     }));
//     eventLoopTaskGroup.queueTask(WTFMove(task));
// }

// } // namespace WebCore