1/*
2 * Copyright (C) 2013 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 WebEmbeddedWorkerImpl_h
32#define WebEmbeddedWorkerImpl_h
33
34#include "WebContentSecurityPolicy.h"
35#include "WebEmbeddedWorker.h"
36#include "WebEmbeddedWorkerStartData.h"
37#include "WebFrameClient.h"
38
39namespace WebCore {
40class WorkerScriptLoader;
41class WorkerThread;
42}
43
44namespace blink {
45
46class ServiceWorkerGlobalScopeProxy;
47class WebView;
48
49class WebEmbeddedWorkerImpl :
50    public WebEmbeddedWorker,
51    public WebFrameClient {
52    WTF_MAKE_NONCOPYABLE(WebEmbeddedWorkerImpl);
53public:
54    WebEmbeddedWorkerImpl(
55        PassOwnPtr<WebServiceWorkerContextClient>,
56        PassOwnPtr<WebWorkerPermissionClientProxy>);
57    virtual ~WebEmbeddedWorkerImpl();
58
59    // WebEmbeddedWorker overrides.
60    virtual void startWorkerContext(const WebEmbeddedWorkerStartData&) OVERRIDE;
61    virtual void terminateWorkerContext() OVERRIDE;
62
63private:
64    class Loader;
65    class LoaderProxy;
66
67    void prepareShadowPageForLoader();
68    void onScriptLoaderFinished();
69
70    // WebFrameClient overrides, for 'shadow page' loading.
71    virtual void didCreateDataSource(WebFrame*, WebDataSource*) OVERRIDE;
72
73    WebEmbeddedWorkerStartData m_workerStartData;
74
75    // These are kept until startWorkerContext is called, and then passed on
76    // to WorkerContext.
77    OwnPtr<WebServiceWorkerContextClient> m_workerContextClient;
78    OwnPtr<WebWorkerPermissionClientProxy> m_permissionClient;
79
80    // Kept around only while main script loading is ongoing.
81    OwnPtr<Loader> m_mainScriptLoader;
82
83    RefPtr<WebCore::WorkerThread> m_workerThread;
84    OwnPtr<LoaderProxy> m_loaderProxy;
85    OwnPtr<ServiceWorkerGlobalScopeProxy> m_workerGlobalScopeProxy;
86
87    // 'shadow page' - created to proxy loading requests from the worker.
88    // Both WebView and WebFrame objects are close()'ed (where they're
89    // deref'ed) when this EmbeddedWorkerImpl is destructed, therefore they
90    // are guaranteed to exist while this object is around.
91    WebView* m_webView;
92    WebFrame* m_mainFrame;
93    RefPtr<WebCore::ExecutionContext> m_loadingContext;
94
95    bool m_askedToTerminate;
96};
97
98} // namespace blink
99
100#endif // WebEmbeddedWorkerImpl_h
101