2 * Copyright (C) 2008 Apple Inc. All Rights Reserved.
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions
7 * 1. Redistributions of source code must retain the above copyright
8 * notice, this list of conditions and the following disclaimer.
9 * 2. Redistributions in binary form must reproduce the above copyright
10 * notice, this list of conditions and the following disclaimer in the
11 * documentation and/or other materials provided with the distribution.
13 * THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY
14 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
15 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
16 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE COMPUTER, INC. OR
17 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
18 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
19 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
20 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
21 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
23 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
32 #include "AtomicStringHash.h"
33 #include "ActiveDOMObject.h"
34 #include "EventListener.h"
35 #include "EventTarget.h"
36 #include "WorkerScriptLoaderClient.h"
37 #include <wtf/OwnPtr.h>
38 #include <wtf/PassRefPtr.h>
39 #include <wtf/RefCounted.h>
40 #include <wtf/RefPtr.h>
44 class ScriptExecutionContext;
46 class WorkerContextProxy;
47 class WorkerScriptLoader;
49 typedef int ExceptionCode;
51 class Worker : public RefCounted<Worker>, public ActiveDOMObject, private WorkerScriptLoaderClient, public EventTarget {
53 static PassRefPtr<Worker> create(const String& url, ScriptExecutionContext* context) { return adoptRef(new Worker(url, context)); }
56 virtual ScriptExecutionContext* scriptExecutionContext() const { return ActiveDOMObject::scriptExecutionContext(); }
58 virtual Worker* toWorker() { return this; }
60 void postMessage(const String&, ExceptionCode&);
61 void postMessage(const String&, MessagePort*, ExceptionCode&);
65 void dispatchMessage(const String&, PassRefPtr<MessagePort>);
66 void dispatchErrorEvent();
68 virtual bool canSuspend() const;
70 virtual bool hasPendingActivity() const;
72 virtual void addEventListener(const AtomicString& eventType, PassRefPtr<EventListener>, bool useCapture);
73 virtual void removeEventListener(const AtomicString& eventType, EventListener*, bool useCapture);
74 virtual bool dispatchEvent(PassRefPtr<Event>, ExceptionCode&);
76 typedef Vector<RefPtr<EventListener> > ListenerVector;
77 typedef HashMap<AtomicString, ListenerVector> EventListenersMap;
78 EventListenersMap& eventListeners() { return m_eventListeners; }
80 using RefCounted<Worker>::ref;
81 using RefCounted<Worker>::deref;
83 void setOnmessage(PassRefPtr<EventListener> eventListener) { m_onMessageListener = eventListener; }
84 EventListener* onmessage() const { return m_onMessageListener.get(); }
86 void setOnerror(PassRefPtr<EventListener> eventListener) { m_onErrorListener = eventListener; }
87 EventListener* onerror() const { return m_onErrorListener.get(); }
90 Worker(const String&, ScriptExecutionContext*);
92 virtual void notifyFinished();
94 virtual void refEventTarget() { ref(); }
95 virtual void derefEventTarget() { deref(); }
97 OwnPtr<WorkerScriptLoader> m_scriptLoader;
99 WorkerContextProxy* m_contextProxy; // The proxy outlives the worker to perform thread shutdown.
101 RefPtr<EventListener> m_onMessageListener;
102 RefPtr<EventListener> m_onErrorListener;
103 EventListenersMap m_eventListeners;
106 } // namespace WebCore
108 #endif // ENABLE(WORKERS)