1/*
2 * Copyright (C) 2009 Google Inc. All rights reserved.
3 *
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions are
6 * met:
7 *
8 *     * Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 *     * Redistributions in binary form must reproduce the above
11 * copyright notice, this list of conditions and the following disclaimer
12 * in the documentation and/or other materials provided with the
13 * distribution.
14 *     * Neither the name of Google Inc. nor the names of its
15 * contributors may be used to endorse or promote products derived from
16 * this software without specific prior written permission.
17 *
18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
19 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
20 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
21 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
22 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
23 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
24 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
25 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
26 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
27 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
28 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
29 */
30
31#ifndef WorkerObjectProxy_h
32#define WorkerObjectProxy_h
33
34#include "core/dom/MessagePort.h"
35#include "core/workers/WorkerReportingProxy.h"
36#include "wtf/PassOwnPtr.h"
37#include "wtf/PassRefPtr.h"
38
39namespace blink {
40
41class ConsoleMessage;
42class ExecutionContext;
43class ExecutionContextTask;
44class WorkerMessagingProxy;
45
46// A proxy to talk to the worker object. This object is created on the
47// worker object thread (i.e. usually the main thread), passed on to
48// the worker thread, and used just to proxy messages to the
49// WorkerMessagingProxy on the worker object thread.
50//
51// Used only by Dedicated Worker.
52class WorkerObjectProxy FINAL : public WorkerReportingProxy {
53public:
54    static PassOwnPtr<WorkerObjectProxy> create(ExecutionContext*, WorkerMessagingProxy*);
55    virtual ~WorkerObjectProxy() { }
56
57    void postMessageToWorkerObject(PassRefPtr<SerializedScriptValue>, PassOwnPtr<MessagePortChannelArray>);
58    void postTaskToMainExecutionContext(PassOwnPtr<ExecutionContextTask>);
59    void confirmMessageFromWorkerObject(bool hasPendingActivity);
60    void reportPendingActivity(bool hasPendingActivity);
61
62    // WorkerReportingProxy overrides.
63    virtual void reportException(const String& errorMessage, int lineNumber, int columnNumber, const String& sourceURL) OVERRIDE;
64    virtual void reportConsoleMessage(PassRefPtrWillBeRawPtr<ConsoleMessage>) OVERRIDE;
65    virtual void postMessageToPageInspector(const String&) OVERRIDE;
66    virtual void updateInspectorStateCookie(const String&) OVERRIDE;
67    virtual void workerGlobalScopeStarted(WorkerGlobalScope*) OVERRIDE { }
68    virtual void workerGlobalScopeClosed() OVERRIDE;
69    virtual void workerThreadTerminated() OVERRIDE;
70    virtual void willDestroyWorkerGlobalScope() OVERRIDE { }
71
72private:
73    WorkerObjectProxy(ExecutionContext*, WorkerMessagingProxy*);
74
75    // These objects always outlive this proxy.
76    ExecutionContext* m_executionContext;
77    WorkerMessagingProxy* m_messagingProxy;
78};
79
80} // namespace blink
81
82#endif // WorkerObjectProxy_h
83