1 /*
2  * Copyright (C) 2017 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;
18 
19 import android.content.Context;
20 import android.os.SystemProperties;
21 import android.text.TextUtils;
22 
23 import androidx.annotation.VisibleForTesting;
24 import androidx.preference.ListPreference;
25 import androidx.preference.Preference;
26 
27 import com.android.settings.R;
28 import com.android.settings.core.PreferenceControllerMixin;
29 import com.android.settingslib.development.DeveloperOptionsPreferenceController;
30 
31 public class BluetoothAvrcpVersionPreferenceController extends DeveloperOptionsPreferenceController
32         implements Preference.OnPreferenceChangeListener, PreferenceControllerMixin {
33 
34     private static final String BLUETOOTH_SELECT_AVRCP_VERSION_KEY =
35             "bluetooth_select_avrcp_version";
36 
37     @VisibleForTesting
38     static final String BLUETOOTH_AVRCP_VERSION_PROPERTY = "persist.bluetooth.avrcpversion";
39 
40     private final String[] mListValues;
41     private final String[] mListSummaries;
42 
BluetoothAvrcpVersionPreferenceController(Context context)43     public BluetoothAvrcpVersionPreferenceController(Context context) {
44         super(context);
45 
46         mListValues = context.getResources().getStringArray(R.array.bluetooth_avrcp_version_values);
47         mListSummaries = context.getResources().getStringArray(R.array.bluetooth_avrcp_versions);
48     }
49 
50     @Override
getPreferenceKey()51     public String getPreferenceKey() {
52         return BLUETOOTH_SELECT_AVRCP_VERSION_KEY;
53     }
54 
55     @Override
onPreferenceChange(Preference preference, Object newValue)56     public boolean onPreferenceChange(Preference preference, Object newValue) {
57         SystemProperties.set(BLUETOOTH_AVRCP_VERSION_PROPERTY, newValue.toString());
58         updateState(mPreference);
59         return true;
60     }
61 
62     @Override
updateState(Preference preference)63     public void updateState(Preference preference) {
64         final ListPreference listPreference = (ListPreference) preference;
65         final String currentValue = SystemProperties.get(BLUETOOTH_AVRCP_VERSION_PROPERTY);
66         int index = 0; // Defaults to AVRCP 1.4
67         for (int i = 0; i < mListValues.length; i++) {
68             if (TextUtils.equals(currentValue, mListValues[i])) {
69                 index = i;
70                 break;
71             }
72         }
73         listPreference.setValue(mListValues[index]);
74         listPreference.setSummary(mListSummaries[index]);
75     }
76 }
77