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      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 ASH_SYSTEM_CHROMEOS_NETWORK_NETWORK_STATE_NOTIFIER_H_
      6 #define ASH_SYSTEM_CHROMEOS_NETWORK_NETWORK_STATE_NOTIFIER_H_
      7 
      8 #include <set>
      9 
     10 #include "ash/ash_export.h"
     11 #include "base/basictypes.h"
     12 #include "base/compiler_specific.h"
     13 #include "base/memory/scoped_ptr.h"
     14 #include "base/memory/weak_ptr.h"
     15 #include "base/time/time.h"
     16 #include "chromeos/network/network_state_handler_observer.h"
     17 
     18 namespace base {
     19 class DictionaryValue;
     20 }
     21 
     22 namespace chromeos {
     23 class NetworkState;
     24 }
     25 
     26 namespace ash {
     27 
     28 // This class has two purposes:
     29 // 1. ShowNetworkConnectError() gets called after any user initiated connect
     30 //    failure. This will handle displaying an error notification.
     31 //    TODO(stevenjb): convert this class to use the new MessageCenter
     32 //    notification system.
     33 // 2. It observes NetworkState changes to generate notifications when a
     34 //    Cellular network is out of credits.
     35 class ASH_EXPORT NetworkStateNotifier :
     36       public chromeos::NetworkStateHandlerObserver {
     37  public:
     38   NetworkStateNotifier();
     39   virtual ~NetworkStateNotifier();
     40 
     41   // NetworkStateHandlerObserver
     42   virtual void DefaultNetworkChanged(
     43       const chromeos::NetworkState* network) OVERRIDE;
     44   virtual void NetworkPropertiesUpdated(
     45       const chromeos::NetworkState* network) OVERRIDE;
     46 
     47   // Show a connection error notification. If |error_name| matches an error
     48   // defined in NetworkConnectionHandler for connect, configure, or activation
     49   // failed, then the associated message is shown; otherwise use the last_error
     50   // value for the network or a Shill property if available.
     51   void ShowNetworkConnectError(const std::string& error_name,
     52                                const std::string& service_path);
     53 
     54  private:
     55   void ConnectErrorPropertiesSucceeded(
     56       const std::string& error_name,
     57       const std::string& service_path,
     58       const base::DictionaryValue& shill_properties);
     59   void ConnectErrorPropertiesFailed(
     60       const std::string& error_name,
     61       const std::string& service_path,
     62       const std::string& shill_connect_error,
     63       scoped_ptr<base::DictionaryValue> shill_error_data);
     64   void ShowConnectErrorNotification(
     65       const std::string& error_name,
     66       const std::string& service_path,
     67       const base::DictionaryValue& shill_properties);
     68 
     69   // Returns true if the default network changed.
     70   bool UpdateDefaultNetwork(const chromeos::NetworkState* network);
     71 
     72   // Helper methods to update state and check for notifications.
     73   void UpdateCellularOutOfCredits(const chromeos::NetworkState* cellular);
     74   void UpdateCellularActivating(const chromeos::NetworkState* cellular);
     75 
     76   std::string last_default_network_;
     77   bool did_show_out_of_credits_;
     78   base::Time out_of_credits_notify_time_;
     79   std::set<std::string> cellular_activating_;
     80   base::WeakPtrFactory<NetworkStateNotifier> weak_ptr_factory_;
     81 
     82   DISALLOW_COPY_AND_ASSIGN(NetworkStateNotifier);
     83 };
     84 
     85 }  // namespace ash
     86 
     87 #endif  // ASH_SYSTEM_CHROMEOS_NETWORK_NETWORK_STATE_NOTIFIER_H_
     88