ash/system/chromeos/bluetooth/bluetooth_notification_controller.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 ASH_SYSTEM_CHROMEOS_BLUETOOTH_BLUETOOTH_NOTIFICATION_CONTROLLER_H_
   6 #define ASH_SYSTEM_CHROMEOS_BLUETOOTH_BLUETOOTH_NOTIFICATION_CONTROLLER_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/ref_counted.h"
  14 #include "base/memory/weak_ptr.h"
  15 #include "base/strings/string16.h"
  16 #include "device/bluetooth/bluetooth_adapter.h"
  17 #include "device/bluetooth/bluetooth_device.h"
  18
  19 namespace ash {
  20
  21 // The BluetoothNotificationController receives incoming pairing requests from
  22 // the BluetoothAdapter, and notifications of changes to the adapter state and
  23 // set of paired devices. It presents incoming pairing requests in the form of
  24 // rich notifications that the user can interact with to approve the request.
  25 class ASH_EXPORT BluetoothNotificationController
  26     : public device::BluetoothAdapter::Observer,
  27       public device::BluetoothDevice::PairingDelegate {
  28  public:
  29   BluetoothNotificationController();
  30   ~BluetoothNotificationController() override;
  31
  32   // device::BluetoothAdapter::Observer override.
  33   void AdapterDiscoverableChanged(device::BluetoothAdapter* adapter,
  34                                   bool discoverable) override;
  35   void DeviceAdded(device::BluetoothAdapter* adapter,
  36                    device::BluetoothDevice* device) override;
  37   void DeviceChanged(device::BluetoothAdapter* adapter,
  38                      device::BluetoothDevice* device) override;
  39   void DeviceRemoved(device::BluetoothAdapter* adapter,
  40                      device::BluetoothDevice* device) override;
  41
  42   // device::BluetoothDevice::PairingDelegate override.
  43   void RequestPinCode(device::BluetoothDevice* device) override;
  44   void RequestPasskey(device::BluetoothDevice* device) override;
  45   void DisplayPinCode(device::BluetoothDevice* device,
  46                       const std::string& pincode) override;
  47   void DisplayPasskey(device::BluetoothDevice* device, uint32 passkey) override;
  48   void KeysEntered(device::BluetoothDevice* device, uint32 entered) override;
  49   void ConfirmPasskey(device::BluetoothDevice* device, uint32 passkey) override;
  50   void AuthorizePairing(device::BluetoothDevice* device) override;
  51
  52  private:
  53   // Internal method called by BluetoothAdapterFactory to provide the adapter
  54   // object.
  55   void OnGetAdapter(scoped_refptr<device::BluetoothAdapter> adapter);
  56
  57   // Presents a notification to the user when the adapter becomes discoverable
  58   // to other nearby devices.
  59   void NotifyAdapterDiscoverable();
  60
  61   // Presents a notification to the user that a device |device| is making a
  62   // pairing request. The exact message to display is given in |message| and
  63   // should include all relevant instructions, if |with_buttons| is true then
  64   // the notification will have Accept and Reject buttons, if false only the
  65   // usual cancel/dismiss button will be present on the notification.
  66   void NotifyPairing(device::BluetoothDevice* device,
  67                      const base::string16& message,
  68                      bool with_buttons);
  69
  70   // Clears any shown pairing notification now that the device has been paired.
  71   void NotifyPairedDevice(device::BluetoothDevice* device);
  72
  73   // Reference to the underlying BluetoothAdapter object, holding this reference
  74   // ensures we stay around as the pairing delegate for that adapter.
  75   scoped_refptr<device::BluetoothAdapter> adapter_;
  76
  77   // Set of currently paired devices, stored by Bluetooth address, used to
  78   // filter out property changes for devices that were previously paired.
  79   std::set<std::string> paired_devices_;
  80
  81   // Note: This should remain the last member so it'll be destroyed and
  82   // invalidate its weak pointers before any other members are destroyed.
  83   base::WeakPtrFactory<BluetoothNotificationController> weak_ptr_factory_;
  84
  85   DISALLOW_COPY_AND_ASSIGN(BluetoothNotificationController);
  86 };
  87
  88 }  // namespace ash
  89
  90 #endif  // ASH_SYSTEM_CHROMEOS_BLUETOOTH_BLUETOOTH_NOTIFICATION_CONTROLLER_H_