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      1 /*
      2  * Copyright (C) 2009 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 ThreadableWebSocketChannel_h
     32 #define ThreadableWebSocketChannel_h
     33 
     34 #if ENABLE(WEB_SOCKETS)
     35 
     36 #include <wtf/Noncopyable.h>
     37 #include <wtf/PassRefPtr.h>
     38 
     39 namespace WebCore {
     40 
     41 class KURL;
     42 class ScriptExecutionContext;
     43 class String;
     44 class WebSocketChannelClient;
     45 
     46 class ThreadableWebSocketChannel : public Noncopyable {
     47 public:
     48     static PassRefPtr<ThreadableWebSocketChannel> create(ScriptExecutionContext*, WebSocketChannelClient*, const KURL&, const String& protocol);
     49 
     50     virtual void connect() = 0;
     51     virtual bool send(const String& message) = 0;
     52     virtual unsigned long bufferedAmount() const = 0;
     53     virtual void close() = 0;
     54     virtual void disconnect() = 0; // Will suppress didClose().
     55 
     56     void ref() { refThreadableWebSocketChannel(); }
     57     void deref() { derefThreadableWebSocketChannel(); }
     58 
     59 protected:
     60     virtual ~ThreadableWebSocketChannel() { }
     61     virtual void refThreadableWebSocketChannel() = 0;
     62     virtual void derefThreadableWebSocketChannel() = 0;
     63 };
     64 
     65 } // namespace WebCore
     66 
     67 #endif // ENABLE(WEB_SOCKETS)
     68 
     69 #endif // ThreadableWebSocketChannel_h
     70