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| 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 virtual ~Listener() {} |
| 20 |
| 21 // Called when a message is received. Returns true iff the message was |
| 22 // handled. |
| 23 virtual bool OnMessageReceived(const Message& message) = 0; |
| 24 |
| 25 // Called when the channel is connected and we have received the internal |
| 26 // Hello message from the peer. |
| 27 virtual void OnChannelConnected(int32 peer_pid) {} |
| 28 |
| 29 // Called when an error is detected that causes the channel to close. |
| 30 // This method is not called when a channel is closed normally. |
| 31 virtual void OnChannelError() {} |
| 32 |
| 33 #if defined(OS_POSIX) |
| 34 // Called on the server side when a channel that listens for connections |
| 35 // denies an attempt to connect. |
| 36 virtual void OnChannelDenied() {} |
| 37 |
| 38 // Called on the server side when a channel that listens for connections |
| 39 // has an error that causes the listening channel to close. |
| 40 virtual void OnChannelListenError() {} |
| 41 #endif // OS_POSIX |
| 42 }; |
| 43 |
| 44 } // namespace IPC |
| 45 |
| 46 #endif // IPC_IPC_LISTENER_H_ |
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