1 /*
2  * Copyright (C) 2018 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.settings.development.featureflags;
18 
19 import android.content.Context;
20 import android.os.SystemProperties;
21 import android.text.TextUtils;
22 import android.util.FeatureFlagUtils;
23 
24 import androidx.annotation.VisibleForTesting;
25 
26 import com.android.settings.core.FeatureFlags;
27 
28 import java.util.HashSet;
29 
30 /**
31  * Helper class to get feature persistent flag information.
32  */
33 public class FeatureFlagPersistent {
34     private static final HashSet<String> PERSISTENT_FLAGS;
35     static {
36         PERSISTENT_FLAGS = new HashSet<>();
37         PERSISTENT_FLAGS.add(FeatureFlags.HEARING_AID_SETTINGS);
38     }
39 
isEnabled(Context context, String feature)40     public static boolean isEnabled(Context context, String feature) {
41         String value = SystemProperties.get(FeatureFlagUtils.PERSIST_PREFIX + feature);
42         if (!TextUtils.isEmpty(value)) {
43             return Boolean.parseBoolean(value);
44         } else {
45             return FeatureFlagUtils.isEnabled(context, feature);
46         }
47     }
48 
setEnabled(Context context, String feature, boolean enabled)49     public static void setEnabled(Context context, String feature, boolean enabled) {
50         SystemProperties.set(FeatureFlagUtils.PERSIST_PREFIX + feature, enabled ? "true" : "false");
51         FeatureFlagUtils.setEnabled(context, feature, enabled);
52     }
53 
isPersistent(String feature)54     public static boolean isPersistent(String feature) {
55         return PERSISTENT_FLAGS.contains(feature);
56     }
57 
58     /**
59      * Returns all persistent flags in their raw form.
60      */
61     @VisibleForTesting(otherwise = VisibleForTesting.NONE)
getAllPersistentFlags()62     static HashSet<String> getAllPersistentFlags() {
63         return PERSISTENT_FLAGS;
64     }
65 }
66 
67