1 // Copyright (c) 2012 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 IPC_IPC_LISTENER_H_ 6 #define IPC_IPC_LISTENER_H_ 7 8 #include "base/basictypes.h" 9 #include "build/build_config.h" 10 #include "ipc/ipc_export.h" 11 12 namespace IPC { 13 14 class Message; 15 16 // Implemented by consumers of a Channel to receive messages. 17 class IPC_EXPORT Listener { 18 public: 19 // Called when a message is received. Returns true iff the message was 20 // handled. 21 virtual bool OnMessageReceived(const Message& message) = 0; 22 23 // Called when the channel is connected and we have received the internal 24 // Hello message from the peer. 25 virtual void OnChannelConnected(int32 peer_pid) {} 26 27 // Called when an error is detected that causes the channel to close. 28 // This method is not called when a channel is closed normally. 29 virtual void OnChannelError() {} 30 31 #if defined(OS_POSIX) 32 // Called on the server side when a channel that listens for connections 33 // denies an attempt to connect. 34 virtual void OnChannelDenied() {} 35 36 // Called on the server side when a channel that listens for connections 37 // has an error that causes the listening channel to close. 38 virtual void OnChannelListenError() {} 39 #endif // OS_POSIX 40 41 protected: 42 virtual ~Listener() {} 43 }; 44 45 } // namespace IPC 46 47 #endif // IPC_IPC_LISTENER_H_ 48
