/*

 * 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 "WebSharedWorkerImpl.h"

#include "CrossThreadTask.h"

#include "KURL.h"

#include "MessageEvent.h"

#include "MessagePortChannel.h"

#include "PlatformMessagePortChannel.h"

#include "ScriptExecutionContext.h"

#include "SharedWorkerContext.h"

#include "SharedWorkerThread.h"

#include "WebMessagePortChannel.h"

#include "WebString.h"

#include "WebURL.h"

using namespace WebCore;

namespace WebKit {

#if ENABLE(SHARED_WORKERS)

WebSharedWorkerImpl::WebSharedWorkerImpl(WebCommonWorkerClient* client)

    : m_client(client)

{

}

WebSharedWorkerImpl::~WebSharedWorkerImpl()

{

}

bool WebSharedWorkerImpl::isStarted()

{

    // Should not ever be called from the worker thread (this API is only called on WebSharedWorkerProxy on the renderer thread).

    ASSERT_NOT_REACHED();

    return workerThread();

}

void WebSharedWorkerImpl::connect(WebMessagePortChannel* webChannel, ConnectListener* listener)

{

    // Convert the WebMessagePortChanel to a WebCore::MessagePortChannel.

    RefPtr<PlatformMessagePortChannel> platform_channel =

        PlatformMessagePortChannel::create(webChannel);

    webChannel->setClient(platform_channel.get());

    OwnPtr<MessagePortChannel> channel =

        MessagePortChannel::create(platform_channel);

    workerThread()->runLoop().postTask(

        createCallbackTask(&connectTask, this, channel.release()));

    if (listener)

        listener->connected();

}

void WebSharedWorkerImpl::connectTask(ScriptExecutionContext* context, WebSharedWorkerImpl* worker, PassOwnPtr<MessagePortChannel> channel)

{

    // Wrap the passed-in channel in a MessagePort, and send it off via a connect event.

    RefPtr<MessagePort> port = MessagePort::create(*context);

    port->entangle(channel);

    ASSERT(context->isWorkerContext());

    WorkerContext* workerContext = static_cast<WorkerContext*>(context);

    ASSERT(workerContext->isSharedWorkerContext());

    workerContext->toSharedWorkerContext()->dispatchEvent(createConnectEvent(port));

}

void WebSharedWorkerImpl::startWorkerContext(const WebURL& url, const WebString& name, const WebString& userAgent, const WebString& sourceCode, long long)

{

    initializeLoader(url);

    setWorkerThread(SharedWorkerThread::create(name, url, userAgent, sourceCode, *this, *this));

    workerThread()->start();

}

void WebSharedWorkerImpl::terminateWorkerContext()

{

    stopWorkerThread();

}

void WebSharedWorkerImpl::clientDestroyed()

{

    m_client = 0;

}

WebWorkerClient* WebSharedWorkerImpl::client()

{

    // We should never be asked for a WebWorkerClient (only dedicated workers have an associated WebWorkerClient).

    // It should not be possible for SharedWorkerContext to generate an API call outside those supported by WebCommonWorkerClient.

    ASSERT_NOT_REACHED();

    return 0;

}

WebSharedWorker* WebSharedWorker::create(WebCommonWorkerClient* client)

{

    return new WebSharedWorkerImpl(client);

}

#endif // ENABLE(SHARED_WORKERS)

} // namespace WebKit