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      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.NotificationChannel;
     20 import android.app.NotificationManager;
     21 import android.content.Context;
     22 import android.os.Vibrator;
     23 import android.support.v7.preference.Preference;
     24 
     25 import com.android.settings.core.PreferenceControllerMixin;
     26 import com.android.settingslib.RestrictedSwitchPreference;
     27 
     28 public class VibrationPreferenceController extends NotificationPreferenceController
     29         implements PreferenceControllerMixin, Preference.OnPreferenceChangeListener {
     30 
     31     private static final String KEY_VIBRATE = "vibrate";
     32     private final Vibrator mVibrator;
     33 
     34     public VibrationPreferenceController(Context context, NotificationBackend backend) {
     35         super(context, backend);
     36         mVibrator = (Vibrator) context.getSystemService(Context.VIBRATOR_SERVICE);
     37     }
     38 
     39     @Override
     40     public String getPreferenceKey() {
     41         return KEY_VIBRATE;
     42     }
     43 
     44     @Override
     45     public boolean isAvailable() {
     46         if (!super.isAvailable() || mChannel == null) {
     47             return false;
     48        }
     49         return checkCanBeVisible(NotificationManager.IMPORTANCE_DEFAULT)
     50                 && !isDefaultChannel()
     51                 && mVibrator != null
     52                 && mVibrator.hasVibrator();
     53     }
     54 
     55     public void updateState(Preference preference) {
     56         if (mChannel != null) {
     57             RestrictedSwitchPreference pref = (RestrictedSwitchPreference) preference;
     58             pref.setDisabledByAdmin(mAdmin);
     59             pref.setEnabled(!pref.isDisabledByAdmin() && isChannelConfigurable());
     60             pref.setChecked(mChannel.shouldVibrate());
     61         }
     62     }
     63 
     64     @Override
     65     public boolean onPreferenceChange(Preference preference, Object newValue) {
     66         if (mChannel != null) {
     67             final boolean vibrate = (Boolean) newValue;
     68             mChannel.enableVibration(vibrate);
     69             saveChannel();
     70         }
     71         return true;
     72     }
     73 }
     74