extensions/shell/browser/shell_network_controller_chromeos.h

   1 // Copyright 2014 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 EXTENSIONS_SHELL_BROWSER_SHELL_NETWORK_CONTROLLER_CHROMEOS_H_
   6 #define EXTENSIONS_SHELL_BROWSER_SHELL_NETWORK_CONTROLLER_CHROMEOS_H_
   7
   8 #include <string>
   9
  10 #include "base/compiler_specific.h"
  11 #include "base/macros.h"
  12 #include "base/memory/scoped_ptr.h"
  13 #include "base/memory/weak_ptr.h"
  14 #include "base/timer/timer.h"
  15 #include "base/values.h"
  16 #include "chromeos/network/network_state_handler_observer.h"
  17
  18 namespace extensions {
  19
  20 // Handles network-related tasks for app_shell on Chrome OS.
  21 class ShellNetworkController : public chromeos::NetworkStateHandlerObserver {
  22  public:
  23   // This class must be instantiated after chromeos::DBusThreadManager and
  24   // destroyed before it.
  25   explicit ShellNetworkController(const std::string& preferred_network_name);
  26   ~ShellNetworkController() override;
  27
  28   // chromeos::NetworkStateHandlerObserver overrides:
  29   void NetworkListChanged() override;
  30   void NetworkConnectionStateChanged(
  31       const chromeos::NetworkState* state) override;
  32
  33   // Control whether the cellular network connection allows roaming.
  34   void SetCellularAllowRoaming(bool allow_roaming);
  35
  36  private:
  37   // State of communication with the connection manager.
  38   enum State {
  39     // No in-progress requests.
  40     STATE_IDLE = 0,
  41     // Waiting for the result of an attempt to connect to the preferred network.
  42     STATE_WAITING_FOR_PREFERRED_RESULT,
  43     // Waiting for the result of an attempt to connect to a non-preferred
  44     // network.
  45     STATE_WAITING_FOR_NON_PREFERRED_RESULT,
  46   };
  47
  48   // Returns the connected or connecting WiFi network or NULL if no network
  49   // matches that description.
  50   const chromeos::NetworkState* GetActiveWiFiNetwork();
  51
  52   // Controls whether scanning is performed periodically.
  53   void SetScanningEnabled(bool enabled);
  54
  55   // Asks the connection manager to scan for networks.
  56   void RequestScan();
  57
  58   // If not currently connected or connecting, chooses a wireless network and
  59   // asks the connection manager to connect to it. Also switches to
  60   // |preferred_network_name_| if possible.
  61   void ConnectIfUnconnected();
  62
  63   // Handles a successful or failed connection attempt.
  64   void HandleConnectionSuccess();
  65   void HandleConnectionError(const std::string& error_name,
  66                              scoped_ptr<base::DictionaryValue> error_data);
  67
  68   // Current status of communication with the chromeos::NetworkStateHandler.
  69   // This is tracked to avoid sending duplicate requests before the handler has
  70   // acknowledged the initial connection attempt.
  71   State state_;
  72
  73   // Invokes RequestScan() periodically.
  74   base::RepeatingTimer<ShellNetworkController> scan_timer_;
  75
  76   // Optionally-supplied name of the preferred network.
  77   std::string preferred_network_name_;
  78
  79   // True if the preferred network is connected or connecting.
  80   bool preferred_network_is_active_;
  81
  82   base::WeakPtrFactory<ShellNetworkController> weak_ptr_factory_;
  83
  84   DISALLOW_COPY_AND_ASSIGN(ShellNetworkController);
  85 };
  86
  87 }  // namespace extensions
  88
  89 #endif  // EXTENSIONS_SHELL_BROWSER_SHELL_NETWORK_CONTROLLER_CHROMEOS_H_