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.format.DateFormat; 23 24 import androidx.preference.Preference; 25 26 import com.android.settings.R; 27 import com.android.settings.core.TogglePreferenceController; 28 29 import java.util.Calendar; 30 import java.util.Date; 31 32 public class TimeFormatPreferenceController extends TogglePreferenceController { 33 34 static final String HOURS_12 = "12"; 35 static final String HOURS_24 = "24"; 36 37 // Used for showing the current date format, which looks like "12/31/2010", "2010/12/13", etc. 38 // The date value is stubs (independent of actual date). 39 private final Calendar mDummyDate; 40 private boolean mIsFromSUW; 41 private UpdateTimeAndDateCallback mUpdateTimeAndDateCallback; 42 TimeFormatPreferenceController(Context context, String key)43 public TimeFormatPreferenceController(Context context, String key) { 44 super(context, key); 45 mDummyDate = Calendar.getInstance(); 46 // This is a no-op implementation of UpdateTimeAndDateCallback to avoid a NPE when 47 // setTimeAndDateCallback() isn't called, e.g. for slices and other cases where the 48 // controller is instantiated outside of the context of the real Date & Time settings 49 // screen. 50 mUpdateTimeAndDateCallback = (c) -> {}; 51 } 52 53 /** 54 * Set the Time and Date callback 55 */ setTimeAndDateCallback( UpdateTimeAndDateCallback callback)56 public TimeFormatPreferenceController setTimeAndDateCallback( 57 UpdateTimeAndDateCallback callback) { 58 mUpdateTimeAndDateCallback = callback; 59 return this; 60 } 61 62 /** 63 * Set if current fragment is launched via SUW 64 */ setFromSUW(boolean isFromSUW)65 public TimeFormatPreferenceController setFromSUW(boolean isFromSUW) { 66 mIsFromSUW = isFromSUW; 67 return this; 68 } 69 70 @Override getAvailabilityStatus()71 public int getAvailabilityStatus() { 72 if (mIsFromSUW) { 73 return DISABLED_DEPENDENT_SETTING; 74 } 75 return AVAILABLE; 76 } 77 78 @Override updateState(Preference preference)79 public void updateState(Preference preference) { 80 super.updateState(preference); 81 preference.setEnabled(getAvailabilityStatus() == AVAILABLE); 82 refreshSummary(preference); 83 } 84 85 @Override isChecked()86 public boolean isChecked() { 87 return is24Hour(); 88 } 89 90 @Override setChecked(boolean isChecked)91 public boolean setChecked(boolean isChecked) { 92 update24HourFormat(mContext, isChecked); 93 mUpdateTimeAndDateCallback.updateTimeAndDateDisplay(mContext); 94 return true; 95 } 96 97 @Override getSummary()98 public CharSequence getSummary() { 99 final Calendar now = Calendar.getInstance(); 100 mDummyDate.setTimeZone(now.getTimeZone()); 101 // We use December 31st because it's unambiguous when demonstrating the date format. 102 // We use 13:00 so we can demonstrate the 12/24 hour options. 103 mDummyDate.set(now.get(Calendar.YEAR), 11, 31, 13, 0, 0); 104 final Date dummyDate = mDummyDate.getTime(); 105 return DateFormat.getTimeFormat(mContext).format(dummyDate); 106 } 107 108 @Override getSliceHighlightMenuRes()109 public int getSliceHighlightMenuRes() { 110 return R.string.menu_key_system; 111 } 112 is24Hour()113 private boolean is24Hour() { 114 return DateFormat.is24HourFormat(mContext); 115 } 116 update24HourFormat(Context context, Boolean is24Hour)117 private static void update24HourFormat(Context context, Boolean is24Hour) { 118 set24Hour(context, is24Hour); 119 timeUpdated(context, is24Hour); 120 } 121 timeUpdated(Context context, Boolean is24Hour)122 private static void timeUpdated(Context context, Boolean is24Hour) { 123 Intent timeChanged = new Intent(Intent.ACTION_TIME_CHANGED); 124 timeChanged.addFlags(Intent.FLAG_RECEIVER_INCLUDE_BACKGROUND); 125 int timeFormatPreference; 126 if (is24Hour == null) { 127 timeFormatPreference = Intent.EXTRA_TIME_PREF_VALUE_USE_LOCALE_DEFAULT; 128 } else { 129 timeFormatPreference = is24Hour ? Intent.EXTRA_TIME_PREF_VALUE_USE_24_HOUR 130 : Intent.EXTRA_TIME_PREF_VALUE_USE_12_HOUR; 131 } 132 timeChanged.putExtra(Intent.EXTRA_TIME_PREF_24_HOUR_FORMAT, timeFormatPreference); 133 context.sendBroadcast(timeChanged); 134 } 135 set24Hour(Context context, boolean is24Hour)136 private static void set24Hour(Context context, boolean is24Hour) { 137 String value = is24Hour ? HOURS_24 : HOURS_12; 138 Settings.System.putString(context.getContentResolver(), 139 Settings.System.TIME_12_24, value); 140 } 141 } 142