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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 import android.util.FeatureFlagUtils;
     23 
     24 import com.android.settings.core.FeatureFlags;
     25 import com.android.settings.core.PreferenceControllerMixin;
     26 import com.android.settings.datetime.timezone.TimeZoneSettings;
     27 import com.android.settingslib.RestrictedPreference;
     28 import com.android.settingslib.core.AbstractPreferenceController;
     29 import com.android.settingslib.datetime.ZoneGetter;
     30 
     31 import java.util.Calendar;
     32 
     33 public class TimeZonePreferenceController extends AbstractPreferenceController
     34         implements PreferenceControllerMixin {
     35 
     36     private static final String KEY_TIMEZONE = "timezone";
     37 
     38     private final AutoTimeZonePreferenceController mAutoTimeZonePreferenceController;
     39     private final boolean mZonePickerV2;
     40 
     41     public TimeZonePreferenceController(Context context,
     42             AutoTimeZonePreferenceController autoTimeZonePreferenceController) {
     43         super(context);
     44         mAutoTimeZonePreferenceController = autoTimeZonePreferenceController;
     45         mZonePickerV2 = FeatureFlagUtils.isEnabled(mContext, FeatureFlags.ZONE_PICKER_V2);
     46     }
     47 
     48     @Override
     49     public void updateState(Preference preference) {
     50         if (!(preference instanceof RestrictedPreference)) {
     51             return;
     52         }
     53         if (mZonePickerV2) {
     54             preference.setFragment(TimeZoneSettings.class.getName());
     55         }
     56         preference.setSummary(getTimeZoneOffsetAndName());
     57         if( !((RestrictedPreference) preference).isDisabledByAdmin()) {
     58             preference.setEnabled(!mAutoTimeZonePreferenceController.isEnabled());
     59         }
     60     }
     61 
     62     @Override
     63     public boolean isAvailable() {
     64         return true;
     65     }
     66 
     67     @Override
     68     public String getPreferenceKey() {
     69         return KEY_TIMEZONE;
     70     }
     71 
     72     @VisibleForTesting
     73     CharSequence getTimeZoneOffsetAndName() {
     74         final Calendar now = Calendar.getInstance();
     75         return ZoneGetter.getTimeZoneOffsetAndName(mContext,
     76                 now.getTimeZone(), now.getTime());
     77     }
     78 }
     79