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.notification;
18 
19 import android.app.NotificationManager;
20 import android.content.Context;
21 import android.provider.Settings;
22 
23 import androidx.preference.Preference;
24 
25 import com.android.settings.core.PreferenceControllerMixin;
26 import com.android.settingslib.RestrictedSwitchPreference;
27 
28 public class LightsPreferenceController extends NotificationPreferenceController
29         implements PreferenceControllerMixin, Preference.OnPreferenceChangeListener {
30 
31     private static final String KEY_LIGHTS = "lights";
32 
LightsPreferenceController(Context context, NotificationBackend backend)33     public LightsPreferenceController(Context context, NotificationBackend backend) {
34         super(context, backend);
35     }
36 
37     @Override
getPreferenceKey()38     public String getPreferenceKey() {
39         return KEY_LIGHTS;
40     }
41 
42     @Override
isAvailable()43     public boolean isAvailable() {
44         if (!super.isAvailable()) {
45             return false;
46         }
47         if (mChannel == null) {
48             return false;
49         }
50         return checkCanBeVisible(NotificationManager.IMPORTANCE_DEFAULT)
51                 && canPulseLight()
52                 && !isDefaultChannel();
53     }
54 
updateState(Preference preference)55     public void updateState(Preference preference) {
56         if (mChannel != null) {
57             RestrictedSwitchPreference pref = (RestrictedSwitchPreference) preference;
58             pref.setDisabledByAdmin(mAdmin);
59             pref.setEnabled(!pref.isDisabledByAdmin());
60             pref.setChecked(mChannel.shouldShowLights());
61         }
62     }
63 
64     @Override
onPreferenceChange(Preference preference, Object newValue)65     public boolean onPreferenceChange(Preference preference, Object newValue) {
66         if (mChannel != null) {
67             final boolean lights = (Boolean) newValue;
68             mChannel.enableLights(lights);
69             saveChannel();
70         }
71         return true;
72     }
73 
canPulseLight()74     boolean canPulseLight() {
75         if (!mContext.getResources()
76                 .getBoolean(com.android.internal.R.bool.config_intrusiveNotificationLed)) {
77             return false;
78         }
79         return Settings.System.getInt(mContext.getContentResolver(),
80                 Settings.System.NOTIFICATION_LIGHT_PULSE, 0) == 1;
81     }
82 
83 }
84