device/bluetooth/bluetooth_adapter_factory.h

   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 DEVICE_BLUETOOTH_BLUETOOTH_ADAPTER_FACTORY_H_
   6 #define DEVICE_BLUETOOTH_BLUETOOTH_ADAPTER_FACTORY_H_
   7
   8 #include <string>
   9
  10 #include "base/callback.h"
  11 #include "base/memory/ref_counted.h"
  12 #include "device/bluetooth/bluetooth_adapter.h"
  13
  14 namespace device {
  15
  16 // BluetoothAdapterFactory is a class that contains static methods, which
  17 // instantiate either a specific Bluetooth adapter, or the generic "default
  18 // adapter" which may change depending on availability.
  19 class BluetoothAdapterFactory {
  20  public:
  21   typedef base::Callback<void(scoped_refptr<BluetoothAdapter> adapter)>
  22       AdapterCallback;
  23
  24   // Returns true if the Bluetooth adapter is available for the current
  25   // platform.
  26   static bool IsBluetoothAdapterAvailable();
  27
  28   // Returns the shared instance of the default adapter, creating and
  29   // initializing it if necessary. |callback| is called with the adapter
  30   // instance passed only once the adapter is fully initialized and ready to
  31   // use.
  32   static void GetAdapter(const AdapterCallback& callback);
  33
  34   // Returns the shared instance of the adapter that has already been created,
  35   // but may or may not have been initialized.
  36   // It returns NULL if no adapter has been created at the time.
  37   static scoped_refptr<BluetoothAdapter> MaybeGetAdapter();
  38 };
  39
  40 }  // namespace device
  41
  42 #endif  // DEVICE_BLUETOOTH_BLUETOOTH_ADAPTER_FACTORY_H_