1 /* 2 * Copyright (C) 2018 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.car.settings.datetime; 18 19 import android.app.time.TimeManager; 20 import android.car.drivingstate.CarUxRestrictions; 21 import android.content.BroadcastReceiver; 22 import android.content.Context; 23 import android.content.Intent; 24 import android.content.IntentFilter; 25 import android.provider.Settings; 26 27 import androidx.preference.Preference; 28 29 import com.android.car.settings.Flags; 30 import com.android.car.settings.common.FragmentController; 31 import com.android.car.settings.common.PreferenceController; 32 import com.android.settingslib.datetime.ZoneGetter; 33 34 import java.util.Calendar; 35 36 /** 37 * Business logic for the preference that allows for changing the timezone. 38 */ 39 public class TimeZonePickerPreferenceController extends PreferenceController<Preference> { 40 41 private final IntentFilter mIntentFilter; 42 private final TimeManager mTimeManager; 43 private final BroadcastReceiver mTimeChangeReceiver = new BroadcastReceiver() { 44 @Override 45 public void onReceive(Context context, Intent intent) { 46 refreshUi(); 47 } 48 }; 49 TimeZonePickerPreferenceController(Context context, String preferenceKey, FragmentController fragmentController, CarUxRestrictions uxRestrictions)50 public TimeZonePickerPreferenceController(Context context, String preferenceKey, 51 FragmentController fragmentController, CarUxRestrictions uxRestrictions) { 52 super(context, preferenceKey, fragmentController, uxRestrictions); 53 54 // Listen to ACTION_TIME_CHANGED because it could be sent by the autoTimeZone toggle. 55 // Listen to ACTION_TIMEZONE_CHANGED because the change in timezone should update the 56 // description of the preference. 57 mIntentFilter = new IntentFilter(); 58 mIntentFilter.addAction(Intent.ACTION_TIME_CHANGED); 59 mIntentFilter.addAction(Intent.ACTION_TIMEZONE_CHANGED); 60 61 mTimeManager = context.getSystemService(TimeManager.class); 62 } 63 64 @Override getPreferenceType()65 protected Class<Preference> getPreferenceType() { 66 return Preference.class; 67 } 68 69 /** Starts the broadcast receiver which listens for time changes */ 70 @Override onStartInternal()71 protected void onStartInternal() { 72 getContext().registerReceiver(mTimeChangeReceiver, mIntentFilter, 73 Context.RECEIVER_NOT_EXPORTED); 74 } 75 76 /** Stops the broadcast receiver which listens for time changes */ 77 @Override onStopInternal()78 protected void onStopInternal() { 79 getContext().unregisterReceiver(mTimeChangeReceiver); 80 } 81 82 @Override updateState(Preference preference)83 protected void updateState(Preference preference) { 84 Calendar now = Calendar.getInstance(); 85 preference.setSummary(ZoneGetter.getTimeZoneOffsetAndName(getContext(), now.getTimeZone(), 86 now.getTime())); 87 boolean isAvailable = getAvailabilityStatus() == AVAILABLE; 88 preference.setEnabled(!autoTimezoneIsEnabled() && isAvailable); 89 setClickableWhileDisabled(preference, !isAvailable, p -> 90 DatetimeUtils.runClickableWhileDisabled(getContext(), getFragmentController())); 91 } 92 93 @Override getDefaultAvailabilityStatus()94 public int getDefaultAvailabilityStatus() { 95 return DatetimeUtils.getAvailabilityStatus(getContext()); 96 } 97 autoTimezoneIsEnabled()98 private boolean autoTimezoneIsEnabled() { 99 if (!Flags.updateDateAndTimePage()) { 100 return Settings.Global.getInt(getContext().getContentResolver(), 101 Settings.Global.AUTO_TIME_ZONE, 0) > 0; 102 } 103 return DatetimeUtils.isAutoLocalTimeDetectionEnabled(mTimeManager); 104 } 105 } 106