device/bluetooth/bluetooth_device_chromeos.h

   1 // Copyright 2013 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 DEVICE_BLUETOOTH_BLUETOOTH_DEVICE_CHROMEOS_H
   6 #define DEVICE_BLUETOOTH_BLUETOOTH_DEVICE_CHROMEOS_H
   7
   8 #include <string>
   9
  10 #include "base/memory/ref_counted.h"
  11 #include "base/memory/scoped_ptr.h"
  12 #include "base/memory/weak_ptr.h"
  13 #include "base/observer_list.h"
  14 #include "base/sequenced_task_runner.h"
  15 #include "chromeos/dbus/bluetooth_device_client.h"
  16 #include "chromeos/dbus/bluetooth_gatt_service_client.h"
  17 #include "dbus/object_path.h"
  18 #include "device/bluetooth/bluetooth_device.h"
  19
  20 namespace device {
  21 class BluetoothSocketThread;
  22 }  // namespace device
  23
  24 namespace chromeos {
  25
  26 class BluetoothAdapterChromeOS;
  27 class BluetoothPairingChromeOS;
  28
  29 // The BluetoothDeviceChromeOS class implements BluetoothDevice for the
  30 // Chrome OS platform.
  31 class BluetoothDeviceChromeOS
  32     : public device::BluetoothDevice,
  33       public BluetoothGattServiceClient::Observer {
  34  public:
  35   // BluetoothDevice override
  36   virtual void AddObserver(
  37       device::BluetoothDevice::Observer* observer) OVERRIDE;
  38   virtual void RemoveObserver(
  39       device::BluetoothDevice::Observer* observer) OVERRIDE;
  40   virtual uint32 GetBluetoothClass() const OVERRIDE;
  41   virtual std::string GetAddress() const OVERRIDE;
  42   virtual VendorIDSource GetVendorIDSource() const OVERRIDE;
  43   virtual uint16 GetVendorID() const OVERRIDE;
  44   virtual uint16 GetProductID() const OVERRIDE;
  45   virtual uint16 GetDeviceID() const OVERRIDE;
  46   virtual int GetRSSI() const OVERRIDE;
  47   virtual int GetCurrentHostTransmitPower() const OVERRIDE;
  48   virtual int GetMaximumHostTransmitPower() const OVERRIDE;
  49   virtual bool IsPaired() const OVERRIDE;
  50   virtual bool IsConnected() const OVERRIDE;
  51   virtual bool IsConnectable() const OVERRIDE;
  52   virtual bool IsConnecting() const OVERRIDE;
  53   virtual UUIDList GetUUIDs() const OVERRIDE;
  54   virtual bool ExpectingPinCode() const OVERRIDE;
  55   virtual bool ExpectingPasskey() const OVERRIDE;
  56   virtual bool ExpectingConfirmation() const OVERRIDE;
  57   virtual void Connect(
  58       device::BluetoothDevice::PairingDelegate* pairing_delegate,
  59       const base::Closure& callback,
  60       const ConnectErrorCallback& error_callback) OVERRIDE;
  61   virtual void SetPinCode(const std::string& pincode) OVERRIDE;
  62   virtual void SetPasskey(uint32 passkey) OVERRIDE;
  63   virtual void ConfirmPairing() OVERRIDE;
  64   virtual void RejectPairing() OVERRIDE;
  65   virtual void CancelPairing() OVERRIDE;
  66   virtual void Disconnect(
  67       const base::Closure& callback,
  68       const ErrorCallback& error_callback) OVERRIDE;
  69   virtual void Forget(const ErrorCallback& error_callback) OVERRIDE;
  70   virtual void ConnectToService(
  71       const device::BluetoothUUID& uuid,
  72       const ConnectToServiceCallback& callback,
  73       const ConnectToServiceErrorCallback& error_callback) OVERRIDE;
  74   virtual void CreateGattConnection(
  75       const GattConnectionCallback& callback,
  76       const ConnectErrorCallback& error_callback) OVERRIDE;
  77   virtual void StartConnectionMonitor(
  78       const base::Closure& callback,
  79       const ErrorCallback& error_callback) OVERRIDE;
  80
  81   // Creates a pairing object with the given delegate |pairing_delegate| and
  82   // establishes it as the pairing context for this device. All pairing-related
  83   // method calls will be forwarded to this object until it is released.
  84   BluetoothPairingChromeOS* BeginPairing(
  85       BluetoothDevice::PairingDelegate* pairing_delegate);
  86
  87   // Releases the current pairing object, any pairing-related method calls will
  88   // be ignored.
  89   void EndPairing();
  90
  91   // Returns the current pairing object or NULL if no pairing is in progress.
  92   BluetoothPairingChromeOS* GetPairing() const;
  93
  94   // Returns the object path of the device.
  95   const dbus::ObjectPath& object_path() const { return object_path_; }
  96
  97  protected:
  98    // BluetoothDevice override
  99   virtual std::string GetDeviceName() const OVERRIDE;
 100
 101  private:
 102   friend class BluetoothAdapterChromeOS;
 103
 104   BluetoothDeviceChromeOS(
 105       BluetoothAdapterChromeOS* adapter,
 106       const dbus::ObjectPath& object_path,
 107       scoped_refptr<base::SequencedTaskRunner> ui_task_runner,
 108       scoped_refptr<device::BluetoothSocketThread> socket_thread);
 109   virtual ~BluetoothDeviceChromeOS();
 110
 111   // BluetoothGattServiceClient::Observer overrides.
 112   virtual void GattServiceAdded(const dbus::ObjectPath& object_path) OVERRIDE;
 113   virtual void GattServiceRemoved(const dbus::ObjectPath& object_path) OVERRIDE;
 114
 115   // Internal method to initiate a connection to this device, and methods called
 116   // by dbus:: on completion of the D-Bus method call.
 117   void ConnectInternal(bool after_pairing,
 118                        const base::Closure& callback,
 119                        const ConnectErrorCallback& error_callback);
 120   void OnConnect(bool after_pairing,
 121                  const base::Closure& callback);
 122   void OnCreateGattConnection(const GattConnectionCallback& callback);
 123   void OnConnectError(bool after_pairing,
 124                       const ConnectErrorCallback& error_callback,
 125                       const std::string& error_name,
 126                       const std::string& error_message);
 127
 128   // Called by dbus:: on completion of the D-Bus method call to pair the device.
 129   void OnPair(const base::Closure& callback,
 130               const ConnectErrorCallback& error_callback);
 131   void OnPairError(const ConnectErrorCallback& error_callback,
 132                    const std::string& error_name,
 133                    const std::string& error_message);
 134
 135   // Called by dbus:: on failure of the D-Bus method call to cancel pairing,
 136   // there is no matching completion call since we don't do anything special
 137   // in that case.
 138   void OnCancelPairingError(const std::string& error_name,
 139                             const std::string& error_message);
 140
 141   // Internal method to set the device as trusted. Trusted devices can connect
 142   // to us automatically, and we can connect to them after rebooting; it also
 143   // causes the device to be remembered by the stack even if not paired.
 144   // |success| to the callback indicates whether or not the request succeeded.
 145   void SetTrusted();
 146   void OnSetTrusted(bool success);
 147
 148   // Called by dbus:: on completion of the D-Bus method call to disconnect the
 149   // device.
 150   void OnDisconnect(const base::Closure& callback);
 151   void OnDisconnectError(const ErrorCallback& error_callback,
 152                          const std::string& error_name,
 153                          const std::string& error_message);
 154
 155   // Called by dbus:: on failure of the D-Bus method call to unpair the device;
 156   // there is no matching completion call since this object is deleted in the
 157   // process of unpairing.
 158   void OnForgetError(const ErrorCallback& error_callback,
 159                      const std::string& error_name,
 160                      const std::string& error_message);
 161
 162   // Called by dbus:: on completion of the D-Bus method call to start the
 163   // connection monitor.
 164   void OnStartConnectionMonitor(const base::Closure& callback);
 165   void OnStartConnectionMonitorError(const ErrorCallback& error_callback,
 166                                      const std::string& error_name,
 167                                      const std::string& error_message);
 168
 169   // The adapter that owns this device instance.
 170   BluetoothAdapterChromeOS* adapter_;
 171
 172   // The dbus object path of the device object.
 173   dbus::ObjectPath object_path_;
 174
 175   // List of observers interested in event notifications from us.
 176   ObserverList<device::BluetoothDevice::Observer> observers_;
 177
 178   // Number of ongoing calls to Connect().
 179   int num_connecting_calls_;
 180
 181   // True if the connection monitor has been started, tracking the connection
 182   // RSSI and TX power.
 183   bool connection_monitor_started_;
 184
 185   // UI thread task runner and socket thread object used to create sockets.
 186   scoped_refptr<base::SequencedTaskRunner> ui_task_runner_;
 187   scoped_refptr<device::BluetoothSocketThread> socket_thread_;
 188
 189   // During pairing this is set to an object that we don't own, but on which
 190   // we can make method calls to request, display or confirm PIN Codes and
 191   // Passkeys. Generally it is the object that owns this one.
 192   scoped_ptr<BluetoothPairingChromeOS> pairing_;
 193
 194   // Note: This should remain the last member so it'll be destroyed and
 195   // invalidate its weak pointers before any other members are destroyed.
 196   base::WeakPtrFactory<BluetoothDeviceChromeOS> weak_ptr_factory_;
 197
 198   DISALLOW_COPY_AND_ASSIGN(BluetoothDeviceChromeOS);
 199 };
 200
 201 }  // namespace chromeos
 202
 203 #endif  // DEVICE_BLUETOOTH_BLUETOOTH_DEVICE_CHROMEOS_H