Home | History | Annotate | Download | only in host 
      1 // Copyright (c) 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 REMOTING_HOST_HOST_CHANGE_NOTIFICATION_LISTENER_H
      6 #define REMOTING_HOST_HOST_CHANGE_NOTIFICATION_LISTENER_H
      7 
      8 #include <string>
      9 
     10 #include "base/compiler_specific.h"
     11 #include "base/memory/scoped_ptr.h"
     12 #include "base/memory/weak_ptr.h"
     13 #include "remoting/jingle_glue/signal_strategy.h"
     14 
     15 namespace buzz {
     16 class XmlElement;
     17 }  // namespace buzz
     18 
     19 namespace remoting {
     20 
     21 // HostChangeNotificationListener listens for messages from the remoting bot
     22 // indicating that its host entry has been changed in the directory.
     23 // If a message is received indicating that the host was deleted, it uses the
     24 // OnHostDeleted callback to shut down the host.
     25 class HostChangeNotificationListener : public SignalStrategy::Listener {
     26  public:
     27   class Listener {
     28    protected:
     29     virtual ~Listener() {}
     30     // Invoked when a notification that the host was deleted is received.
     31    public:
     32     virtual void OnHostDeleted() = 0;
     33   };
     34 
     35   // Both listener and signal_strategy are expected to outlive this object.
     36   HostChangeNotificationListener(Listener* listener,
     37                                  const std::string& host_id,
     38                                  SignalStrategy* signal_strategy,
     39                                  const std::string& directory_bot_jid);
     40   virtual ~HostChangeNotificationListener();
     41 
     42   // SignalStrategy::Listener interface.
     43   virtual void OnSignalStrategyStateChange(
     44       SignalStrategy::State state) OVERRIDE;
     45   virtual bool OnSignalStrategyIncomingStanza(
     46       const buzz::XmlElement* stanza) OVERRIDE;
     47 
     48  private:
     49   void OnHostDeleted();
     50 
     51   Listener* listener_;
     52   std::string host_id_;
     53   SignalStrategy* signal_strategy_;
     54   std::string directory_bot_jid_;
     55   base::WeakPtrFactory<HostChangeNotificationListener> weak_factory_;
     56   DISALLOW_COPY_AND_ASSIGN(HostChangeNotificationListener);
     57 };
     58 
     59 }  // namespace remoting
     60 
     61 #endif  // REMOTING_HOST_HOST_CHANGE_NOTIFICATION_LISTENER_H
     62