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.content.Intent; 21 import android.provider.Settings; 22 import android.text.TextUtils; 23 import android.text.format.DateFormat; 24 25 import androidx.preference.Preference; 26 import androidx.preference.SwitchPreference; 27 import androidx.preference.TwoStatePreference; 28 29 import com.android.settings.core.PreferenceControllerMixin; 30 import com.android.settingslib.core.AbstractPreferenceController; 31 32 import java.util.Calendar; 33 import java.util.Date; 34 35 public class TimeFormatPreferenceController extends AbstractPreferenceController 36 implements PreferenceControllerMixin { 37 38 static final String HOURS_12 = "12"; 39 static final String HOURS_24 = "24"; 40 41 private static final String KEY_TIME_FORMAT = "24 hour"; 42 43 // Used for showing the current date format, which looks like "12/31/2010", "2010/12/13", etc. 44 // The date value is dummy (independent of actual date). 45 private final Calendar mDummyDate; 46 private final boolean mIsFromSUW; 47 private final UpdateTimeAndDateCallback mUpdateTimeAndDateCallback; 48 TimeFormatPreferenceController(Context context, UpdateTimeAndDateCallback callback, boolean isFromSUW)49 public TimeFormatPreferenceController(Context context, UpdateTimeAndDateCallback callback, 50 boolean isFromSUW) { 51 super(context); 52 mIsFromSUW = isFromSUW; 53 mDummyDate = Calendar.getInstance(); 54 mUpdateTimeAndDateCallback = callback; 55 } 56 57 @Override isAvailable()58 public boolean isAvailable() { 59 return !mIsFromSUW; 60 } 61 62 @Override updateState(Preference preference)63 public void updateState(Preference preference) { 64 if (!(preference instanceof TwoStatePreference)) { 65 return; 66 } 67 preference.setEnabled( 68 !AutoTimeFormatPreferenceController.isAutoTimeFormatSelection(mContext)); 69 ((TwoStatePreference) preference).setChecked(is24Hour()); 70 final Calendar now = Calendar.getInstance(); 71 mDummyDate.setTimeZone(now.getTimeZone()); 72 // We use December 31st because it's unambiguous when demonstrating the date format. 73 // We use 13:00 so we can demonstrate the 12/24 hour options. 74 mDummyDate.set(now.get(Calendar.YEAR), 11, 31, 13, 0, 0); 75 final Date dummyDate = mDummyDate.getTime(); 76 preference.setSummary(DateFormat.getTimeFormat(mContext).format(dummyDate)); 77 } 78 79 @Override handlePreferenceTreeClick(Preference preference)80 public boolean handlePreferenceTreeClick(Preference preference) { 81 if (!(preference instanceof TwoStatePreference) 82 || !TextUtils.equals(KEY_TIME_FORMAT, preference.getKey())) { 83 return false; 84 } 85 final boolean is24Hour = ((SwitchPreference) preference).isChecked(); 86 update24HourFormat(mContext, is24Hour); 87 mUpdateTimeAndDateCallback.updateTimeAndDateDisplay(mContext); 88 return true; 89 } 90 91 @Override getPreferenceKey()92 public String getPreferenceKey() { 93 return KEY_TIME_FORMAT; 94 } 95 is24Hour()96 private boolean is24Hour() { 97 return DateFormat.is24HourFormat(mContext); 98 } 99 update24HourFormat(Context context, Boolean is24Hour)100 static void update24HourFormat(Context context, Boolean is24Hour) { 101 set24Hour(context, is24Hour); 102 timeUpdated(context, is24Hour); 103 } 104 timeUpdated(Context context, Boolean is24Hour)105 static void timeUpdated(Context context, Boolean is24Hour) { 106 Intent timeChanged = new Intent(Intent.ACTION_TIME_CHANGED); 107 timeChanged.addFlags(Intent.FLAG_RECEIVER_INCLUDE_BACKGROUND); 108 int timeFormatPreference; 109 if (is24Hour == null) { 110 timeFormatPreference = Intent.EXTRA_TIME_PREF_VALUE_USE_LOCALE_DEFAULT; 111 } else { 112 timeFormatPreference = is24Hour ? Intent.EXTRA_TIME_PREF_VALUE_USE_24_HOUR 113 : Intent.EXTRA_TIME_PREF_VALUE_USE_12_HOUR; 114 } 115 timeChanged.putExtra(Intent.EXTRA_TIME_PREF_24_HOUR_FORMAT, timeFormatPreference); 116 context.sendBroadcast(timeChanged); 117 } 118 set24Hour(Context context, Boolean is24Hour)119 static void set24Hour(Context context, Boolean is24Hour) { 120 String value = is24Hour == null ? null : 121 is24Hour ? HOURS_24 : HOURS_12; 122 Settings.System.putString(context.getContentResolver(), 123 Settings.System.TIME_12_24, value); 124 } 125 } 126