1 /** 2 * Copyright (C) 2015 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 package com.android.server.fingerprint; 18 19 import android.content.Context; 20 import android.hardware.fingerprint.Fingerprint; 21 import android.text.TextUtils; 22 import android.util.SparseArray; 23 24 import com.android.internal.annotations.GuardedBy; 25 26 import java.util.List; 27 28 /** 29 * Utility class for dealing with fingerprints and fingerprint settings. 30 */ 31 public class FingerprintUtils { 32 33 private static final Object sInstanceLock = new Object(); 34 private static FingerprintUtils sInstance; 35 36 @GuardedBy("this") 37 private final SparseArray<FingerprintsUserState> mUsers = new SparseArray<>(); 38 39 public static FingerprintUtils getInstance() { 40 synchronized (sInstanceLock) { 41 if (sInstance == null) { 42 sInstance = new FingerprintUtils(); 43 } 44 } 45 return sInstance; 46 } 47 48 private FingerprintUtils() { 49 } 50 51 public List<Fingerprint> getFingerprintsForUser(Context ctx, int userId) { 52 return getStateForUser(ctx, userId).getFingerprints(); 53 } 54 55 public void addFingerprintForUser(Context ctx, int fingerId, int userId) { 56 getStateForUser(ctx, userId).addFingerprint(fingerId, userId); 57 } 58 59 public void removeFingerprintIdForUser(Context ctx, int fingerId, int userId) { 60 getStateForUser(ctx, userId).removeFingerprint(fingerId); 61 } 62 63 public void renameFingerprintForUser(Context ctx, int fingerId, int userId, CharSequence name) { 64 if (TextUtils.isEmpty(name)) { 65 // Don't do the rename if it's empty 66 return; 67 } 68 getStateForUser(ctx, userId).renameFingerprint(fingerId, name); 69 } 70 71 private FingerprintsUserState getStateForUser(Context ctx, int userId) { 72 synchronized (this) { 73 FingerprintsUserState state = mUsers.get(userId); 74 if (state == null) { 75 state = new FingerprintsUserState(ctx, userId); 76 mUsers.put(userId, state); 77 } 78 return state; 79 } 80 } 81 } 82 83
