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// Copyright (c) 2013 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_CHANGE_NOTIFICATION_LISTENER_H
#define REMOTING_HOST_HOST_CHANGE_NOTIFICATION_LISTENER_H
#include <string>
#include "base/compiler_specific.h"
#include "base/macros.h"
#include "base/memory/scoped_ptr.h"
#include "base/memory/weak_ptr.h"
#include "remoting/signaling/signal_strategy.h"
namespace buzz {
class XmlElement;
} // namespace buzz
namespace remoting {
// HostChangeNotificationListener listens for messages from the remoting bot
// indicating that its host entry has been changed in the directory.
// If a message is received indicating that the host was deleted, it uses the
// OnHostDeleted callback to shut down the host.
class HostChangeNotificationListener : public SignalStrategy::Listener {
public:
class Listener {
protected:
virtual ~Listener() {}
// Invoked when a notification that the host was deleted is received.
public:
virtual void OnHostDeleted() = 0;
};
// Both listener and signal_strategy are expected to outlive this object.
HostChangeNotificationListener(Listener* listener,
const std::string& host_id,
SignalStrategy* signal_strategy,
const std::string& directory_bot_jid);
~HostChangeNotificationListener() override;
// SignalStrategy::Listener interface.
void OnSignalStrategyStateChange(SignalStrategy::State state) override;
bool OnSignalStrategyIncomingStanza(const buzz::XmlElement* stanza) override;
private:
void OnHostDeleted();
Listener* listener_;
std::string host_id_;
SignalStrategy* signal_strategy_;
std::string directory_bot_jid_;
base::WeakPtrFactory<HostChangeNotificationListener> weak_factory_;
DISALLOW_COPY_AND_ASSIGN(HostChangeNotificationListener);
};
} // namespace remoting
#endif // REMOTING_HOST_HOST_CHANGE_NOTIFICATION_LISTENER_H
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