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      1 /*
      2  * Copyright (C) 2016 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.datetime;
     18 
     19 import android.content.Context;
     20 import android.support.annotation.VisibleForTesting;
     21 import android.support.v7.preference.Preference;
     22 
     23 import com.android.settings.core.PreferenceController;
     24 import com.android.settingslib.datetime.ZoneGetter;
     25 
     26 import java.util.Calendar;
     27 
     28 public class TimeZonePreferenceController extends PreferenceController {
     29 
     30     private static final String KEY_TIMEZONE = "timezone";
     31 
     32     private final AutoTimeZonePreferenceController mAutoTimeZonePreferenceController;
     33 
     34     public TimeZonePreferenceController(Context context,
     35             AutoTimeZonePreferenceController autoTimeZonePreferenceController) {
     36         super(context);
     37         mAutoTimeZonePreferenceController = autoTimeZonePreferenceController;
     38     }
     39 
     40     @Override
     41     public void updateState(Preference preference) {
     42         preference.setSummary(getTimeZoneOffsetAndName());
     43         preference.setEnabled(!mAutoTimeZonePreferenceController.isEnabled());
     44     }
     45 
     46     @Override
     47     public boolean isAvailable() {
     48         return true;
     49     }
     50 
     51     @Override
     52     public String getPreferenceKey() {
     53         return KEY_TIMEZONE;
     54     }
     55 
     56     @VisibleForTesting
     57     CharSequence getTimeZoneOffsetAndName() {
     58         final Calendar now = Calendar.getInstance();
     59         return ZoneGetter.getTimeZoneOffsetAndName(mContext,
     60                 now.getTimeZone(), now.getTime());
     61     }
     62 }
     63