/*

 * 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.

 */

#ifndef ThreadableWebSocketChannelClientWrapper_h

#define ThreadableWebSocketChannelClientWrapper_h

#if ENABLE(WEB_SOCKETS)

#include "PlatformString.h"

#include "WebSocketChannelClient.h"

#include <wtf/PassRefPtr.h>

#include <wtf/Threading.h>

#include <wtf/Vector.h>

namespace WebCore {

class String;

class ThreadableWebSocketChannelClientWrapper : public ThreadSafeShared<ThreadableWebSocketChannelClientWrapper> {

public:

    static PassRefPtr<ThreadableWebSocketChannelClientWrapper> create(WebSocketChannelClient* client)

    {

        return adoptRef(new ThreadableWebSocketChannelClientWrapper(client));

    }

    void clearSyncMethodDone()

    {

        m_syncMethodDone = false;

    }

    void setSyncMethodDone()

    {

        m_syncMethodDone = true;

    }

    bool syncMethodDone() const

    {

        return m_syncMethodDone;

    }

    bool sent() const

    {

        return m_sent;

    }

    void setSent(bool sent)

    {

        m_sent = sent;

        m_syncMethodDone = true;

    }

    unsigned long bufferedAmount() const

    {

        return m_bufferedAmount;

    }

    void setBufferedAmount(unsigned long bufferedAmount)

    {

        m_bufferedAmount = bufferedAmount;

        m_syncMethodDone = true;

    }

    void clearClient()

    {

        m_client = 0;

    }

    void didConnect()

    {

        m_pendingConnected = true;

        if (!m_suspended)

            processPendingEvents();

    }

    void didReceiveMessage(const String& msg)

    {

        m_pendingMessages.append(msg);

        if (!m_suspended)

            processPendingEvents();

    }

    void didClose(unsigned long unhandledBufferedAmount)

    {

        m_pendingClosed = true;

        m_bufferedAmount = unhandledBufferedAmount;

        if (!m_suspended)

            processPendingEvents();

    }

    void suspend()

    {

        m_suspended = true;

    }

    void resume()

    {

        m_suspended = false;

        processPendingEvents();

    }

protected:

    ThreadableWebSocketChannelClientWrapper(WebSocketChannelClient* client)

        : m_client(client)

        , m_syncMethodDone(false)

        , m_sent(false)

        , m_bufferedAmount(0)

        , m_suspended(false)

        , m_pendingConnected(false)

        , m_pendingClosed(false)

    {

    }

    void processPendingEvents()

    {

        ASSERT(!m_suspended);

        if (m_pendingConnected) {

            m_pendingConnected = false;

            if (m_client)

                m_client->didConnect();

        }

        Vector<String> messages;

        messages.swap(m_pendingMessages);

        for (Vector<String>::const_iterator iter = messages.begin(); iter != messages.end(); ++iter) {

            if (m_client)

                m_client->didReceiveMessage(*iter);

        }

        if (m_pendingClosed) {

            m_pendingClosed = false;

            if (m_client)

                m_client->didClose(m_bufferedAmount);

        }

    }

    WebSocketChannelClient* m_client;

    bool m_syncMethodDone;

    bool m_sent;

    unsigned long m_bufferedAmount;

    bool m_suspended;

    bool m_pendingConnected;

    Vector<String> m_pendingMessages;

    bool m_pendingClosed;

};

} // namespace WebCore

#endif // ENABLE(WEB_SOCKETS)

#endif // ThreadableWebSocketChannelClientWrapper_h