1 // Copyright 2014 The Chromium Authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file.
5 #ifndef NullExecutionContext_h
6 #define NullExecutionContext_h
8 #include "core/dom/ExecutionContext.h"
9 #include "core/dom/SecurityContext.h"
10 #include "core/events/EventQueue.h"
11 #include "platform/heap/Handle.h"
12 #include "platform/weborigin/KURL.h"
13 #include "wtf/RefCounted.h"
17 class NullExecutionContext FINAL : public RefCountedWillBeGarbageCollectedFinalized<NullExecutionContext>, public SecurityContext, public ExecutionContext {
18 WILL_BE_USING_GARBAGE_COLLECTED_MIXIN(NullExecutionContext);
20 NullExecutionContext();
22 virtual EventQueue* eventQueue() const OVERRIDE { return m_queue.get(); }
24 virtual bool tasksNeedSuspension() OVERRIDE { return m_tasksNeedSuspension; }
25 void setTasksNeedSuspension(bool flag) { m_tasksNeedSuspension = flag; }
27 void trace(Visitor* visitor)
29 visitor->trace(m_queue);
30 ExecutionContext::trace(visitor);
33 virtual void reportBlockedScriptExecutionToInspector(const String& directiveText) OVERRIDE { }
34 virtual SecurityContext& securityContext() OVERRIDE { return *this; }
37 using RefCounted<NullExecutionContext>::ref;
38 using RefCounted<NullExecutionContext>::deref;
40 virtual void refExecutionContext() OVERRIDE { ref(); }
41 virtual void derefExecutionContext() OVERRIDE { deref(); }
45 virtual const KURL& virtualURL() const OVERRIDE { return m_dummyURL; }
46 virtual KURL virtualCompleteURL(const String&) const OVERRIDE { return m_dummyURL; }
49 bool m_tasksNeedSuspension;
50 OwnPtrWillBeMember<EventQueue> m_queue;
55 } // namespace WebCore
57 #endif // NullExecutionContext_h