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/*
* Copyright (C) 2017 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package android.nfc.dta;
import android.content.Context;
import android.nfc.INfcDta;
import android.nfc.NfcAdapter;
import android.os.RemoteException;
import android.util.Log;
import java.util.HashMap;
/**
* This class provides the primary API for DTA operations.
* @hide
*/
public final class NfcDta {
private static final String TAG = "NfcDta";
private static INfcDta sService;
private static HashMap<Context, NfcDta> sNfcDtas = new HashMap<Context, NfcDta>();
private final Context mContext;
private NfcDta(Context context, INfcDta service) {
mContext = context.getApplicationContext();
sService = service;
}
/**
* Helper to get an instance of this class.
*
* @param adapter A reference to an NfcAdapter object.
* @return
*/
public static synchronized NfcDta getInstance(NfcAdapter adapter) {
if (adapter == null) throw new NullPointerException("NfcAdapter is null");
Context context = adapter.getContext();
if (context == null) {
Log.e(TAG, "NfcAdapter context is null.");
throw new UnsupportedOperationException();
}
NfcDta manager = sNfcDtas.get(context);
if (manager == null) {
INfcDta service = adapter.getNfcDtaInterface();
if (service == null) {
Log.e(TAG, "This device does not implement the INfcDta interface.");
throw new UnsupportedOperationException();
}
manager = new NfcDta(context, service);
sNfcDtas.put(context, manager);
}
return manager;
}
/**
* Enables DTA mode
*
* @return true/false if enabling was successful
*/
public boolean enableDta() {
try {
sService.enableDta();
} catch (RemoteException e) {
return false;
}
return true;
}
/**
* Disables DTA mode
*
* @return true/false if disabling was successful
*/
public boolean disableDta() {
try {
sService.disableDta();
} catch (RemoteException e) {
return false;
}
return true;
}
/**
* Enables Server
*
* @return true/false if enabling was successful
*/
public boolean enableServer(String serviceName, int serviceSap, int miu,
int rwSize, int testCaseId) {
try {
return sService.enableServer(serviceName, serviceSap, miu, rwSize, testCaseId);
} catch (RemoteException e) {
return false;
}
}
/**
* Disables Server
*
* @return true/false if disabling was successful
*/
public boolean disableServer() {
try {
sService.disableServer();
} catch (RemoteException e) {
return false;
}
return true;
}
/**
* Enables Client
*
* @return true/false if enabling was successful
*/
public boolean enableClient(String serviceName, int miu, int rwSize,
int testCaseId) {
try {
return sService.enableClient(serviceName, miu, rwSize, testCaseId);
} catch (RemoteException e) {
return false;
}
}
/**
* Disables client
*
* @return true/false if disabling was successful
*/
public boolean disableClient() {
try {
sService.disableClient();
} catch (RemoteException e) {
return false;
}
return true;
}
/**
* Registers Message Service
*
* @return true/false if registration was successful
*/
public boolean registerMessageService(String msgServiceName) {
try {
return sService.registerMessageService(msgServiceName);
} catch (RemoteException e) {
return false;
}
}
}
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