Moving host status events monitoring to a separate interface (HostStatusMonitor).

remoting/host/log_to_server.h

 // Copyright (c) 2012 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_LOG_TO_SERVER_H_
 #define REMOTING_HOST_LOG_TO_SERVER_H_
 
 #include <deque>
 #include <map>
 #include <string>
 
-#include "base/memory/ref_counted.h"
 #include "base/memory/scoped_ptr.h"
+#include "base/memory/weak_ptr.h"
 #include "base/threading/non_thread_safe.h"
 #include "remoting/host/host_status_observer.h"
 #include "remoting/host/server_log_entry.h"
 #include "remoting/jingle_glue/signal_strategy.h"
 #include "remoting/protocol/transport.h"
 
 namespace base {
 class MessageLoopProxy;
 }  // namespace base
 
 namespace buzz {
 class XmlElement;
 }  // namespace buzz
 
 namespace remoting {
 
-class ChromotingHost;
+class HostStatusMonitor;
 class IqSender;
 
 // LogToServer sends log entries to a server.
 // The contents of the log entries are described in server_log_entry.cc.
 // They do not contain any personally identifiable information.
 class LogToServer : public base::NonThreadSafe,
                     public HostStatusObserver,
                     public SignalStrategy::Listener {
  public:
-  explicit LogToServer(ChromotingHost* host,
+  explicit LogToServer(base::WeakPtr<HostStatusMonitor> monitor,
                        ServerLogEntry::Mode mode,
                        SignalStrategy* signal_strategy,
                        const std::string& directory_bot_jid);
   virtual ~LogToServer();
 
   // Logs a session state change. Currently, this is either
   // connection or disconnection.
   void LogSessionStateChange(const std::string& jid, bool connected);
 
   // SignalStrategy::Listener interface.
   virtual void OnSignalStrategyStateChange(
       SignalStrategy::State state) OVERRIDE;
   virtual bool OnSignalStrategyIncomingStanza(
       const buzz::XmlElement* stanza) OVERRIDE;
 
   // HostStatusObserver interface.
   virtual void OnClientConnected(const std::string& jid) OVERRIDE;
   virtual void OnClientDisconnected(const std::string& jid) OVERRIDE;
   virtual void OnClientRouteChange(
       const std::string& jid,
       const std::string& channel_name,
       const protocol::TransportRoute& route) OVERRIDE;
 
  private:
   void Log(const ServerLogEntry& entry);
   void SendPendingEntries();
 
-  scoped_refptr<ChromotingHost> host_;
+  base::WeakPtr<HostStatusMonitor> monitor_;
   ServerLogEntry::Mode mode_;
   SignalStrategy* signal_strategy_;
   scoped_ptr<IqSender> iq_sender_;
   std::string directory_bot_jid_;
 
   // A map from client JID to the route type of that client's connection to
   // this host.
   std::map<std::string, protocol::TransportRoute::RouteType>
       connection_route_type_;
   std::deque<ServerLogEntry> pending_entries_;
 
   DISALLOW_COPY_AND_ASSIGN(LogToServer);
 };
 
 }  // namespace remoting
 
 #endif  // REMOTING_HOST_LOG_TO_SERVER_H_