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_NFC_NFC_ADAPTER_FACTORY_H_ 6 #define DEVICE_NFC_NFC_ADAPTER_FACTORY_H_ 7 8 #include "base/callback.h" 9 #include "base/memory/ref_counted.h" 10 #include "device/nfc/nfc_adapter.h" 11 12 namespace device { 13 14 // NfcAdapterFactory is a class that contains static methods, which 15 // instantiate either a specific NFC adapter, or the generic "default 16 // adapter" which may change depending on availability. 17 class NfcAdapterFactory { 18 public: 19 typedef base::Callback<void(scoped_refptr<NfcAdapter>)> AdapterCallback; 20 21 // Returns true if NFC is available for the current platform. 22 static bool IsNfcAvailable(); 23 24 // Returns the shared instance of the default adapter, creating and 25 // initializing it if necessary. |callback| is called with the adapter 26 // instance passed only once the adapter is fully initialized and ready to 27 // use. 28 static void GetAdapter(const AdapterCallback& callback); 29 }; 30 31 } // namespace device 32 33 #endif // DEVICE_NFC_NFC_ADAPTER_FACTORY_H_ 34