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   virtual ~ShellNetworkController();
  27
  28   // chromeos::NetworkStateHandlerObserver overrides:
  29   virtual void NetworkListChanged() override;
  30   virtual void NetworkConnectionStateChanged(
  31       const chromeos::NetworkState* state) override;
  32
  33  private:
  34   // State of communication with the connection manager.
  35   enum State {
  36     // No in-progress requests.
  37     STATE_IDLE = 0,
  38     // Waiting for the result of an attempt to connect to the preferred network.
  39     STATE_WAITING_FOR_PREFERRED_RESULT,
  40     // Waiting for the result of an attempt to connect to a non-preferred
  41     // network.
  42     STATE_WAITING_FOR_NON_PREFERRED_RESULT,
  43   };
  44
  45   // Returns the connected or connecting WiFi network or NULL if no network
  46   // matches that description.
  47   const chromeos::NetworkState* GetActiveWiFiNetwork();
  48
  49   // Controls whether scanning is performed periodically.
  50   void SetScanningEnabled(bool enabled);
  51
  52   // Asks the connection manager to scan for networks.
  53   void RequestScan();
  54
  55   // If not currently connected or connecting, chooses a wireless network and
  56   // asks the connection manager to connect to it. Also switches to
  57   // |preferred_network_name_| if possible.
  58   void ConnectIfUnconnected();
  59
  60   // Handles a successful or failed connection attempt.
  61   void HandleConnectionSuccess();
  62   void HandleConnectionError(const std::string& error_name,
  63                              scoped_ptr<base::DictionaryValue> error_data);
  64
  65   // Current status of communication with the chromeos::NetworkStateHandler.
  66   // This is tracked to avoid sending duplicate requests before the handler has
  67   // acknowledged the initial connection attempt.
  68   State state_;
  69
  70   // Invokes RequestScan() periodically.
  71   base::RepeatingTimer<ShellNetworkController> scan_timer_;
  72
  73   // Optionally-supplied name of the preferred network.
  74   std::string preferred_network_name_;
  75
  76   // True if the preferred network is connected or connecting.
  77   bool preferred_network_is_active_;
  78
  79   base::WeakPtrFactory<ShellNetworkController> weak_ptr_factory_;
  80
  81   DISALLOW_COPY_AND_ASSIGN(ShellNetworkController);
  82 };
  83
  84 }  // namespace extensions
  85
  86 #endif  // EXTENSIONS_SHELL_BROWSER_SHELL_NETWORK_CONTROLLER_CHROMEOS_H_