network_state_handler_observer.h revision d0247b1b59f9c528cb6df88b4f2b9afaf80d181e 
1// Copyright (c) 2012 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 CHROMEOS_NETWORK_NETWORK_STATE_HANDLER_OBSERVER_H_
6#define CHROMEOS_NETWORK_NETWORK_STATE_HANDLER_OBSERVER_H_
7
8#include <string>
9#include <vector>
10
11#include "base/basictypes.h"
12#include "chromeos/chromeos_export.h"
13
14namespace chromeos {
15
16class NetworkState;
17
18// Observer class for all network state changes, including changes to
19// active (connecting or connected) services.
20class CHROMEOS_EXPORT NetworkStateHandlerObserver {
21 public:
22  NetworkStateHandlerObserver();
23  virtual ~NetworkStateHandlerObserver();
24
25  // The list of networks changed.
26  virtual void NetworkListChanged();
27
28  // The list of devices changed, or a property changed (e.g. scanning).
29  virtual void DeviceListChanged();
30
31  // The default network changed (includes VPNs) or one of its properties
32  // changed. This won't be called if the WiFi signal strength property
33  // changes. If interested in those events, use NetworkPropertiesUpdated()
34  // below.
35  // |network| will be NULL if there is no longer a default network.
36  virtual void DefaultNetworkChanged(const NetworkState* network);
37
38  // The connection state of |network| changed.
39  virtual void NetworkConnectionStateChanged(const NetworkState* network);
40
41  // One or more properties of |network| have been updated. Note: this will get
42  // called in *addition* to NetworkConnectionStateChanged() when the
43  // connection state property changes. Use this to track properties like
44  // wifi strength.
45  virtual void NetworkPropertiesUpdated(const NetworkState* network);
46
47 private:
48  DISALLOW_COPY_AND_ASSIGN(NetworkStateHandlerObserver);
49};
50
51}  // namespace chromeos
52
53#endif  // CHROMEOS_NETWORK_NETWORK_STATE_HANDLER_OBSERVER_H_
54