Implement initial part of WebEmbeddedWorker

Source/web/WebEmbeddedWorkerImpl.h

 /*
  * Copyright (C) 2013 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 10 matching lines @@
  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
-#ifndef WebEmbeddedWorker_h
-#define WebEmbeddedWorker_h
+#ifndef WebEmbeddedWorkerImpl_h
+#define WebEmbeddedWorkerImpl_h
 
-#include "public/platform/WebCommon.h"
+#include "WebContentSecurityPolicy.h"
+#include "WebEmbeddedWorker.h"
+#include "WebEmbeddedWorkerStartData.h"
+#include "WebFrameClient.h"
+#include "core/frame/ContentSecurityPolicyResponseHeaders.h"
+
+namespace WebCore {
+class ContentSecurityPolicyResponseHeaders;
+class WorkerScriptLoader;
+class WorkerThread;
+}
 
 namespace blink {
 
-class WebServiceWorkerContextClient;
-struct WebEmbeddedWorkerStartData;
+class WebView;
 
-// An interface to start and terminate an embedded worker.
-// All methods of this class must be called on the main thread.
-class WebEmbeddedWorker {
+class WebEmbeddedWorkerImpl :
+    public WebEmbeddedWorker,
+    public WebFrameClient {
 public:
-    // Invoked on the main thread to instantiate a WebEmbeddedWorker.
-    // The given WebWorkerContextClient and WebWorkerPermissionClientProxy are
-    // going to be passed on to the worker thread and is held by a newly
-    // created WorkerGlobalScope.
-    BLINK_EXPORT static WebEmbeddedWorker* create(
-        WebServiceWorkerContextClient*,
-        WebWorkerPermissionClientProxy*);
+    WebEmbeddedWorkerImpl(
+        PassOwnPtr<WebServiceWorkerContextClient>,
+        PassOwnPtr<WebWorkerPermissionClientProxy>);
+    virtual ~WebEmbeddedWorkerImpl();
 
-    virtual ~WebEmbeddedWorker() { }
+    // WebEmbeddedWorker overrides.
+    virtual void startWorkerContext(const WebEmbeddedWorkerStartData&) OVERRIDE;
+    virtual void terminateWorkerContext() OVERRIDE;
 
-    // Starts and terminates WorkerThread and WorkerGlobalScope.
-    virtual void startWorkerContext(const WebEmbeddedWorkerStartData&) = 0;
-    virtual void terminateWorkerContext() = 0;
+private:
+    class Loader;
+
+    void prepareShadowPageForLoader();
+    void onScriptLoaderFinished();
+
+    // WebFrameClient overrides, for 'shadow page' loading.
+    virtual void didCreateDataSource(WebFrame*, WebDataSource*) OVERRIDE;
+
+    WebEmbeddedWorkerStartData m_workerStartData;
+
+    // These are kept until startWorkerContext is called, and then passed on
+    // to WorkerContext.
+    OwnPtr<WebServiceWorkerContextClient> m_workerContextClient;
+    OwnPtr<WebWorkerPermissionClientProxy> m_permissionClient;
+
+    // Kept around only while main script loading is ongoing.
+    OwnPtr<Loader> m_mainScriptLoader;
+
+    RefPtr<WebCore::WorkerThread> m_workerThread;
+
+    // 'shadow page' - created to proxy loading requests from the worker.
+    WebView* m_webView;
+    WebFrame* m_mainFrame;

[abarth-chromium, 2013/11/25 01:45:37]

What manages the lifetime of these raw pointers?  A raw pointer to a WebView is
kind of strange...

[kinuko, 2013/11/25 03:31:48]

I added comment about the ownership/lifetime semantics.
This class manages/owns them, and it calls WebView::close() and
WebFrame::close() in its dtor. Not sure that's the best way, but it looks this
is what SharedWorker does, and also most of test code does.

+    RefPtr<WebCore::ExecutionContext> m_loadingDocument;
+
+    bool m_askedToTerminate;
 };
 
 } // namespace blink
 
-#endif // WebEmbeddedWorker_h
+#endif // WebEmbeddedWorkerImpl_h