Persist fingerprint names
Bug: 20469328
Change-Id: I8f4a988687bfb78c36cc7cf187103a9d93ed4535
diff --git a/services/core/java/com/android/server/fingerprint/FingerprintUtils.java b/services/core/java/com/android/server/fingerprint/FingerprintUtils.java
new file mode 100644
index 0000000..1e6e105
--- /dev/null
+++ b/services/core/java/com/android/server/fingerprint/FingerprintUtils.java
@@ -0,0 +1,95 @@
+/**
+ * Copyright (C) 2015 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 com.android.server.fingerprint;
+
+import android.content.Context;
+import android.hardware.fingerprint.Fingerprint;
+import android.os.Vibrator;
+import android.util.SparseArray;
+
+import com.android.internal.annotations.GuardedBy;
+
+import java.util.List;
+
+/**
+ * Utility class for dealing with fingerprints and fingerprint settings.
+ */
+public class FingerprintUtils {
+
+ private static final long[] FP_ERROR_VIBRATE_PATTERN = new long[] {0, 30, 100, 30};
+ private static final long[] FP_SUCCESS_VIBRATE_PATTERN = new long[] {0, 30};
+
+ private static final Object sInstanceLock = new Object();
+ private static FingerprintUtils sInstance;
+
+ @GuardedBy("this")
+ private final SparseArray<FingerprintsUserState> mUsers = new SparseArray<>();
+
+ public static FingerprintUtils getInstance() {
+ synchronized (sInstanceLock) {
+ if (sInstance == null) {
+ sInstance = new FingerprintUtils();
+ }
+ }
+ return sInstance;
+ }
+
+ private FingerprintUtils() {
+ }
+
+ public List<Fingerprint> getFingerprintsForUser(Context ctx, int userId) {
+ return getStateForUser(ctx, userId).getFingerprints();
+ }
+
+ public void addFingerprintForUser(Context ctx, int fingerId, int userId) {
+ getStateForUser(ctx, userId).addFingerprint(fingerId);
+ }
+
+ public void removeFingerprintIdForUser(Context ctx, int fingerId, int userId) {
+ getStateForUser(ctx, userId).removeFingerprint(fingerId);
+ }
+
+ public void renameFingerprintForUser(Context ctx, int fingerId, int userId, CharSequence name) {
+ getStateForUser(ctx, userId).renameFingerprint(fingerId, name);
+ }
+
+ public static void vibrateFingerprintError(Context context) {
+ Vibrator vibrator = context.getSystemService(Vibrator.class);
+ if (vibrator != null) {
+ vibrator.vibrate(FP_ERROR_VIBRATE_PATTERN, -1);
+ }
+ }
+
+ public static void vibrateFingerprintSuccess(Context context) {
+ Vibrator vibrator = context.getSystemService(Vibrator.class);
+ if (vibrator != null) {
+ vibrator.vibrate(FP_SUCCESS_VIBRATE_PATTERN, -1);
+ }
+ }
+
+ private FingerprintsUserState getStateForUser(Context ctx, int userId) {
+ synchronized (this) {
+ FingerprintsUserState state = mUsers.get(userId);
+ if (state == null) {
+ state = new FingerprintsUserState(ctx, userId);
+ mUsers.put(userId, state);
+ }
+ return state;
+ }
+ }
+}
+