| // Copyright 2014 The Chromium Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #ifndef REMOTING_HOST_HOST_EXTENSION_H_ |
| #define REMOTING_HOST_HOST_EXTENSION_H_ |
| |
| #include <string> |
| |
| #include "base/memory/scoped_ptr.h" |
| |
| namespace remoting { |
| |
| class ClientSession; |
| class HostExtensionSession; |
| |
| // Extends |ChromotingHost| with new functionality, and can use extension |
| // messages to communicate with the client. |
| class HostExtension { |
| public: |
| virtual ~HostExtension() {} |
| |
| // Returns a space-separated list of capabilities provided by this extension. |
| // Capabilities may be used to inform the client of the availability of an |
| // extension. They are merged into the capabilities the host reports to the |
| // client. |
| virtual std::string GetCapabilities() = 0; |
| |
| // Creates an extension session, which can handle extension messages for a |
| // client session. |
| // NULL may be returned if |client_session| cannot support this |
| // extension. |
| // |client_session| must outlive the resulting |HostExtensionSession|. |
| virtual scoped_ptr<HostExtensionSession> CreateExtensionSession( |
| ClientSession* client_session) = 0; |
| }; |
| |
| } // namespace remoting |
| |
| #endif // REMOTING_HOST_HOST_EXTENSION_H_ |