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      1 // Copyright 2013 The Chromium Authors. All rights reserved.
      2 // Use of this source code is governed by a BSD-style license that can be
      3 // found in the LICENSE file.
      4 
      5 #ifndef MOJO_SYSTEM_PROXY_MESSAGE_PIPE_ENDPOINT_H_
      6 #define MOJO_SYSTEM_PROXY_MESSAGE_PIPE_ENDPOINT_H_
      7 
      8 #include "base/macros.h"
      9 #include "base/memory/ref_counted.h"
     10 #include "mojo/system/message_in_transit.h"
     11 #include "mojo/system/message_pipe_endpoint.h"
     12 #include "mojo/system/system_impl_export.h"
     13 
     14 namespace mojo {
     15 namespace system {
     16 
     17 class ChannelEndpoint;
     18 class LocalMessagePipeEndpoint;
     19 class MessagePipe;
     20 
     21 // A |ProxyMessagePipeEndpoint| is an endpoint which delegates everything to a
     22 // |ChannelEndpoint|, which may be co-owned by a |Channel|. Like any
     23 // |MessagePipeEndpoint|, a |ProxyMessagePipeEndpoint| is owned by a
     24 // |MessagePipe|.
     25 //
     26 // For example, a |MessagePipe| with one endpoint local and the other endpoint
     27 // remote consists of a |LocalMessagePipeEndpoint| and a
     28 // |ProxyMessagePipeEndpoint|, with only the local endpoint being accessible via
     29 // a |MessagePipeDispatcher|.
     30 class MOJO_SYSTEM_IMPL_EXPORT ProxyMessagePipeEndpoint
     31     : public MessagePipeEndpoint {
     32  public:
     33   explicit ProxyMessagePipeEndpoint(ChannelEndpoint* channel_endpoint);
     34   virtual ~ProxyMessagePipeEndpoint();
     35 
     36   // |MessagePipeEndpoint| implementation:
     37   virtual Type GetType() const OVERRIDE;
     38   virtual bool OnPeerClose() OVERRIDE;
     39   virtual void EnqueueMessage(scoped_ptr<MessageInTransit> message) OVERRIDE;
     40 
     41  private:
     42   scoped_refptr<ChannelEndpoint> channel_endpoint_;
     43 
     44   DISALLOW_COPY_AND_ASSIGN(ProxyMessagePipeEndpoint);
     45 };
     46 
     47 }  // namespace system
     48 }  // namespace mojo
     49 
     50 #endif  // MOJO_SYSTEM_PROXY_MESSAGE_PIPE_ENDPOINT_H_
     51