1// Copyright 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 CLOUD_PRINT_GCP20_PROTOTYPE_CLOUD_PRINT_XMPP_LISTENER_H_
6#define CLOUD_PRINT_GCP20_PROTOTYPE_CLOUD_PRINT_XMPP_LISTENER_H_
7
8#include <string>
9
10#include "base/basictypes.h"
11#include "base/compiler_specific.h"
12#include "base/memory/ref_counted.h"
13#include "base/memory/scoped_ptr.h"
14#include "base/memory/weak_ptr.h"
15#include "jingle/notifier/listener/push_client_observer.h"
16
17namespace base {
18
19class SingleThreadTaskRunner;
20
21}  // namespace base
22
23namespace net {
24
25class URLRequestContextGetter;
26
27}  // namespace net
28
29namespace notifier {
30
31class PushClient;
32
33}  // namespace notifier
34
35class CloudPrintXmppListener
36    : public base::SupportsWeakPtr<CloudPrintXmppListener>,
37      public notifier::PushClientObserver {
38 public:
39  class Delegate {
40   public:
41    virtual ~Delegate() {}
42
43    // Invoked when XMPP connection was established.
44    virtual void OnXmppConnected() = 0;
45
46    // Invoked when server rejected our credentials.
47    virtual void OnXmppAuthError() = 0;
48
49    // Invoked when server is unavailable.
50    virtual void OnXmppNetworkError() = 0;
51
52    // Invoked when new printjob was received.
53    virtual void OnXmppNewPrintJob(const std::string& device_id) = 0;
54
55    // Invoked when local settings was updated.
56    virtual void OnXmppNewLocalSettings(const std::string& device_id) = 0;
57
58    // Invoked when printer was deleted from the server.
59    virtual void OnXmppDeleteNotification(const std::string& device_id) = 0;
60  };
61
62  CloudPrintXmppListener(
63      const std::string& robot_email,
64      int standard_ping_interval,
65      scoped_refptr<base::SingleThreadTaskRunner> task_runner,
66      Delegate* delegate);
67
68  virtual ~CloudPrintXmppListener();
69
70  // Connects to the server.
71  void Connect(const std::string& access_token);
72
73  // Update ping interval when new local_settings was received.
74  void set_ping_interval(int interval);
75
76 private:
77  // notifier::PushClientObserver methods:
78  virtual void OnNotificationsEnabled() OVERRIDE;
79  virtual void OnNotificationsDisabled(
80      notifier::NotificationsDisabledReason reason) OVERRIDE;
81  virtual void OnIncomingNotification(
82      const notifier::Notification& notification) OVERRIDE;
83  virtual void OnPingResponse() OVERRIDE;
84
85  // Stops listening and sending pings.
86  void Disconnect();
87
88  // Schedules ping (unless it was already scheduled).
89  void SchedulePing();
90
91  // Sends ping.
92  void SendPing();
93
94  // Checks if ping was received.
95  void OnPingTimeoutReached();
96
97  // Credentials:
98  std::string robot_email_;
99  std::string access_token_;
100
101  // Internal listener.
102  scoped_ptr<notifier::PushClient> push_client_;
103
104  // Interval between pings in regular workflow.
105  int standard_ping_interval_;
106
107  // Number of timeouts posted to MessageLoop. Is used for controlling "fake"
108  // timeout calls.
109  int ping_timeouts_posted_;
110
111  // Number of responses awaiting from XMPP server. Is used for controlling
112  // number of failed pings.
113  int ping_responses_pending_;
114
115  // Is used for preventing multiple pings at the moment.
116  bool ping_scheduled_;
117
118  scoped_refptr<net::URLRequestContextGetter> context_getter_;
119
120  Delegate* delegate_;
121
122  DISALLOW_COPY_AND_ASSIGN(CloudPrintXmppListener);
123};
124
125#endif  // CLOUD_PRINT_GCP20_PROTOTYPE_CLOUD_PRINT_XMPP_LISTENER_H_
126
127