2 * Copyright (C) 2008 Apple Inc. All Rights Reserved.
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28 #include "core/dom/ActiveDOMObject.h"
30 #include "core/dom/ExecutionContext.h"
34 ActiveDOMObject::ActiveDOMObject(ExecutionContext* executionContext)
35 : ContextLifecycleObserver(executionContext, ActiveDOMObjectType)
36 , m_pendingActivityCount(0)
38 , m_suspendIfNeededCalled(false)
41 ASSERT(!executionContext || executionContext->isContextThread());
44 ActiveDOMObject::~ActiveDOMObject()
46 // ActiveDOMObject may be inherited by a sub-class whose life-cycle
47 // exceeds that of the associated ExecutionContext. In those cases,
48 // m_executionContext would/should have been nullified by
49 // ContextLifecycleObserver::contextDestroyed() (which we implement /
50 // inherit). Hence, we should ensure that this is not 0 before use it
52 if (!executionContext())
55 ASSERT(m_suspendIfNeededCalled);
56 ASSERT(executionContext()->isContextThread());
59 void ActiveDOMObject::suspendIfNeeded()
62 ASSERT(!m_suspendIfNeededCalled);
63 m_suspendIfNeededCalled = true;
65 if (ExecutionContext* context = executionContext())
66 context->suspendActiveDOMObjectIfNeeded(this);
69 bool ActiveDOMObject::hasPendingActivity() const
71 return m_pendingActivityCount;
74 void ActiveDOMObject::suspend()
78 void ActiveDOMObject::resume()
82 void ActiveDOMObject::stop()
86 void ActiveDOMObject::didMoveToNewExecutionContext(ExecutionContext* context)
88 observeContext(context);
90 if (context->activeDOMObjectsAreStopped()) {
95 if (context->activeDOMObjectsAreSuspended()) {
103 } // namespace WebCore