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 static android.app.time.Capabilities.CAPABILITY_POSSESSED; 20 21 import android.app.time.TimeManager; 22 import android.app.time.TimeZoneCapabilities; 23 import android.content.Context; 24 25 import androidx.annotation.VisibleForTesting; 26 import androidx.preference.Preference; 27 28 import com.android.settings.core.PreferenceControllerMixin; 29 import com.android.settingslib.RestrictedPreference; 30 import com.android.settingslib.core.AbstractPreferenceController; 31 import com.android.settingslib.datetime.ZoneGetter; 32 33 import java.util.Calendar; 34 35 public class TimeZonePreferenceController extends AbstractPreferenceController 36 implements PreferenceControllerMixin { 37 38 private static final String KEY_TIMEZONE = "timezone"; 39 40 private final TimeManager mTimeManager; 41 TimeZonePreferenceController(Context context)42 public TimeZonePreferenceController(Context context) { 43 super(context); 44 mTimeManager = context.getSystemService(TimeManager.class); 45 } 46 47 @Override updateState(Preference preference)48 public void updateState(Preference preference) { 49 if (!(preference instanceof RestrictedPreference)) { 50 return; 51 } 52 preference.setSummary(getTimeZoneOffsetAndName()); 53 if (!((RestrictedPreference) preference).isDisabledByAdmin()) { 54 boolean enableManualTimeZoneSelection = shouldEnableManualTimeZoneSelection(); 55 preference.setEnabled(enableManualTimeZoneSelection); 56 } 57 } 58 59 @Override isAvailable()60 public boolean isAvailable() { 61 return true; 62 } 63 64 @Override getPreferenceKey()65 public String getPreferenceKey() { 66 return KEY_TIMEZONE; 67 } 68 69 @VisibleForTesting getTimeZoneOffsetAndName()70 CharSequence getTimeZoneOffsetAndName() { 71 final Calendar now = Calendar.getInstance(); 72 return ZoneGetter.getTimeZoneOffsetAndName(mContext, 73 now.getTimeZone(), now.getTime()); 74 } 75 shouldEnableManualTimeZoneSelection()76 private boolean shouldEnableManualTimeZoneSelection() { 77 TimeZoneCapabilities timeZoneCapabilities = 78 mTimeManager.getTimeZoneCapabilitiesAndConfig().getCapabilities(); 79 int suggestManualTimeZoneCapability = 80 timeZoneCapabilities.getSetManualTimeZoneCapability(); 81 return suggestManualTimeZoneCapability == CAPABILITY_POSSESSED; 82 } 83 } 84