Simplify SharedWorkerRepository code

Source/web/SharedWorkerRepository.cpp

Index: Source/web/SharedWorkerRepository.cpp
diff --git a/Source/web/SharedWorkerRepository.cpp b/Source/web/SharedWorkerRepository.cpp
deleted file mode 100644
index 5e8e5543beb2cd486b112f33ca23ec789b8f1f68..0000000000000000000000000000000000000000
--- a/Source/web/SharedWorkerRepository.cpp
+++ /dev/null
@@ -1,257 +0,0 @@
-/*
- * Copyright (C) 2009 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
- * copyright notice, this list of conditions and the following disclaimer
- * in the documentation and/or other materials provided with the
- * distribution.
- *     * Neither the name of Google Inc. nor the names of its
- * contributors may be used to endorse or promote products derived from
- * this software without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
- * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
- * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
- * 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.
- */
-
-#include "config.h"
-#include "core/workers/SharedWorkerRepository.h"
-
-#include "WebContentSecurityPolicy.h"
-#include "WebFrameClient.h"
-#include "WebFrameImpl.h"
-#include "WebKit.h"
-#include "WebSharedWorker.h"
-#include "WebSharedWorkerRepository.h"
-#include "bindings/v8/ExceptionMessages.h"
-#include "bindings/v8/ExceptionState.h"
-#include "core/dom/ExceptionCode.h"
-#include "core/dom/ExecutionContext.h"
-#include "core/dom/MessagePortChannel.h"
-#include "core/events/Event.h"
-#include "core/events/ThreadLocalEventNames.h"
-#include "core/frame/ContentSecurityPolicy.h"
-#include "core/inspector/InspectorInstrumentation.h"
-#include "core/workers/SharedWorker.h"
-#include "core/workers/WorkerScriptLoader.h"
-#include "core/workers/WorkerScriptLoaderClient.h"
-#include "platform/network/ResourceResponse.h"
-#include "public/platform/Platform.h"
-#include "public/platform/WebMessagePortChannel.h"
-#include "public/platform/WebString.h"
-#include "public/platform/WebURL.h"
-
-namespace WebKit {
-
-WebSharedWorkerRepository* s_sharedWorkerRepository = 0;
-
-void setSharedWorkerRepository(WebSharedWorkerRepository* repository)
-{
-    s_sharedWorkerRepository = repository;
-}
-
-static WebSharedWorkerRepository* sharedWorkerRepository()
-{
-    // Will only be non-zero if the embedder has set the shared worker repository upon initialization. Nothing in WebKit sets this.
-    return s_sharedWorkerRepository;
-}
-
-}
-
-namespace WebCore {
-
-class Document;
-using WebKit::WebFrameImpl;
-using WebKit::WebMessagePortChannel;
-using WebKit::WebSharedWorker;
-using WebKit::WebSharedWorkerRepository;
-
-// Callback class that keeps the SharedWorker and WebSharedWorker objects alive while loads are potentially happening, and also translates load errors into error events on the worker.
-class SharedWorkerScriptLoader : private WorkerScriptLoaderClient, private WebSharedWorker::ConnectListener {
-public:
-    SharedWorkerScriptLoader(PassRefPtr<SharedWorker> worker, const KURL& url, const String& name, PassRefPtr<MessagePortChannel> channel, PassOwnPtr<WebSharedWorker> webWorker)
-        : m_worker(worker)
-        , m_url(url)
-        , m_name(name)
-        , m_webWorker(webWorker)
-        , m_channel(channel)
-        , m_scriptLoader(WorkerScriptLoader::create())
-        , m_loading(false)
-        , m_responseAppCacheID(0)
-    {
-        m_scriptLoader->setTargetType(ResourceRequest::TargetIsSharedWorker);
-    }
-
-    ~SharedWorkerScriptLoader();
-    void load();
-    static void stopAllLoadersForContext(ExecutionContext*);
-
-private:
-    // WorkerScriptLoaderClient callbacks
-    virtual void didReceiveResponse(unsigned long identifier, const ResourceResponse&);
-    virtual void notifyFinished();
-
-    virtual void connected();
-
-    const ExecutionContext* loadingContext() { return m_worker->executionContext(); }
-
-    void sendConnect();
-
-    RefPtr<SharedWorker> m_worker;
-    KURL m_url;
-    String m_name;
-    OwnPtr<WebSharedWorker> m_webWorker;
-    RefPtr<MessagePortChannel> m_channel;
-    RefPtr<WorkerScriptLoader> m_scriptLoader;
-    bool m_loading;
-    long long m_responseAppCacheID;
-};
-
-static Vector<SharedWorkerScriptLoader*>& pendingLoaders()
-{
-    AtomicallyInitializedStatic(Vector<SharedWorkerScriptLoader*>&, loaders = *new Vector<SharedWorkerScriptLoader*>);
-    return loaders;
-}
-
-void SharedWorkerScriptLoader::stopAllLoadersForContext(ExecutionContext* context)
-{
-    // Walk our list of pending loaders and shutdown any that belong to this context.
-    Vector<SharedWorkerScriptLoader*>& loaders = pendingLoaders();
-    for (unsigned i = 0; i < loaders.size(); ) {
-        SharedWorkerScriptLoader* loader = loaders[i];
-        if (context == loader->loadingContext()) {
-            loaders.remove(i);
-            delete loader;
-        } else
-            i++;
-    }
-}
-
-SharedWorkerScriptLoader::~SharedWorkerScriptLoader()
-{
-    if (m_loading)
-        m_worker->unsetPendingActivity(m_worker.get());
-}
-
-void SharedWorkerScriptLoader::load()
-{
-    ASSERT(!m_loading);
-    // If the shared worker is not yet running, load the script resource for it, otherwise just send it a connect event.
-    if (m_webWorker->isStarted())
-        sendConnect();
-    else {
-        // Keep the worker + JS wrapper alive until the resource load is complete in case we need to dispatch an error event.
-        m_worker->setPendingActivity(m_worker.get());
-        m_loading = true;
-
-        m_scriptLoader->loadAsynchronously(m_worker->executionContext(), m_url, DenyCrossOriginRequests, this);
-    }
-}
-
-void SharedWorkerScriptLoader::didReceiveResponse(unsigned long identifier, const ResourceResponse& response)
-{
-    m_responseAppCacheID = response.appCacheID();
-    InspectorInstrumentation::didReceiveScriptResponse(m_worker->executionContext(), identifier);
-}
-
-void SharedWorkerScriptLoader::notifyFinished()
-{
-    if (m_scriptLoader->failed()) {
-        m_worker->dispatchEvent(Event::createCancelable(EventTypeNames::error));
-        delete this;
-    } else {
-        InspectorInstrumentation::scriptImported(m_worker->executionContext(), m_scriptLoader->identifier(), m_scriptLoader->script());
-        // Pass the script off to the worker, then send a connect event.
-        m_webWorker->startWorkerContext(m_url, m_name, m_worker->executionContext()->userAgent(m_url), m_scriptLoader->script(), m_worker->executionContext()->contentSecurityPolicy()->deprecatedHeader(), static_cast<WebKit::WebContentSecurityPolicyType>(m_worker->executionContext()->contentSecurityPolicy()->deprecatedHeaderType()), m_responseAppCacheID);
-        sendConnect();
-    }
-}
-
-void SharedWorkerScriptLoader::sendConnect()
-{
-    WebMessagePortChannel* webChannel = m_channel->webChannelRelease();
-    m_channel.clear();
-    // Send the connect event off, and linger until it is done sending.
-    m_webWorker->connect(webChannel, this);
-}
-
-void SharedWorkerScriptLoader::connected()
-{
-    // Connect event has been sent, so free ourselves (this releases the SharedWorker so it can be freed as well if unreferenced).
-    delete this;
-}
-
-bool SharedWorkerRepository::isAvailable()
-{
-    return WebKit::sharedWorkerRepository();
-}
-
-static WebSharedWorkerRepository::DocumentID getId(void* document)
-{
-    ASSERT(document);
-    return reinterpret_cast<WebSharedWorkerRepository::DocumentID>(document);
-}
-
-void SharedWorkerRepository::connect(PassRefPtr<SharedWorker> worker, PassRefPtr<MessagePortChannel> port, const KURL& url, const String& name, ExceptionState& es)
-{
-    WebKit::WebSharedWorkerRepository* repository = WebKit::sharedWorkerRepository();
-
-    // This should not be callable unless there's a SharedWorkerRepository for
-    // this context (since isAvailable() should have returned null).
-    ASSERT(repository);
-
-    // No nested workers (for now) - connect() should only be called from document context.
-    ASSERT(worker->executionContext()->isDocument());
-    Document* document = toDocument(worker->executionContext());
-    WebFrameImpl* webFrame = WebFrameImpl::fromFrame(document->frame());
-    OwnPtr<WebSharedWorker> webWorker;
-    webWorker = adoptPtr(webFrame->client()->createSharedWorker(webFrame, url, name, getId(document)));
-
-    if (!webWorker) {
-        // Existing worker does not match this url, so return an error back to the caller.
-        es.throwDOMException(URLMismatchError, ExceptionMessages::failedToConstruct("SharedWorker", "The location of the SharedWorker named '" + name + "' does not exactly match the provided URL ('" + url.elidedString() + "')."));
-        return;
-    }
-
-    repository->addSharedWorker(webWorker.get(), getId(document));
-
-    // The loader object manages its own lifecycle (and the lifecycles of the two worker objects).
-    // It will free itself once loading is completed.
-    SharedWorkerScriptLoader* loader = new SharedWorkerScriptLoader(worker, url, name, port, webWorker.release());
-    loader->load();
-}
-
-void SharedWorkerRepository::documentDetached(Document* document)
-{
-    WebKit::WebSharedWorkerRepository* repository = WebKit::sharedWorkerRepository();
-
-    if (repository)
-        repository->documentDetached(getId(document));
-
-    // Stop the creation of any pending SharedWorkers for this context.
-    // FIXME: Need a way to invoke this for WorkerGlobalScopes as well when we support for nested workers.
-    SharedWorkerScriptLoader::stopAllLoadersForContext(document);
-}
-
-bool SharedWorkerRepository::hasSharedWorkers(Document* document)
-{
-    WebKit::WebSharedWorkerRepository* repository = WebKit::sharedWorkerRepository();
-
-    return repository && repository->hasSharedWorkers(getId(document));
-}
-
-} // namespace WebCore