1/* 2 * Copyright (C) 2016 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file 5 * except in compliance with the License. You may obtain a copy of the License at 6 * 7 * http://www.apache.org/licenses/LICENSE-2.0 8 * 9 * Unless required by applicable law or agreed to in writing, software distributed under the 10 * License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY 11 * KIND, either express or implied. See the License for the specific language governing 12 * permissions and limitations under the License. 13 */ 14 15package com.android.settings.display; 16 17import android.content.Context; 18import android.support.v14.preference.SwitchPreference; 19import android.util.AttributeSet; 20 21import com.android.internal.app.NightDisplayController; 22import com.android.settings.R; 23 24import java.text.DateFormat; 25import java.time.LocalTime; 26import java.util.Calendar; 27import java.util.TimeZone; 28 29public class NightDisplayPreference extends SwitchPreference 30 implements NightDisplayController.Callback { 31 32 private NightDisplayController mController; 33 private DateFormat mTimeFormatter; 34 35 public NightDisplayPreference(Context context, AttributeSet attrs) { 36 super(context, attrs); 37 38 mController = new NightDisplayController(context); 39 mTimeFormatter = android.text.format.DateFormat.getTimeFormat(context); 40 mTimeFormatter.setTimeZone(TimeZone.getTimeZone("UTC")); 41 } 42 43 @Override 44 public void onAttached() { 45 super.onAttached(); 46 47 // Listen for changes only while attached. 48 mController.setListener(this); 49 50 // Update the summary since the state may have changed while not attached. 51 updateSummary(); 52 } 53 54 @Override 55 public void onDetached() { 56 super.onDetached(); 57 58 // Stop listening for state changes. 59 mController.setListener(null); 60 } 61 62 private String getFormattedTimeString(LocalTime localTime) { 63 final Calendar c = Calendar.getInstance(); 64 c.setTimeZone(mTimeFormatter.getTimeZone()); 65 c.set(Calendar.HOUR_OF_DAY, localTime.getHour()); 66 c.set(Calendar.MINUTE, localTime.getMinute()); 67 c.set(Calendar.SECOND, 0); 68 c.set(Calendar.MILLISECOND, 0); 69 return mTimeFormatter.format(c.getTime()); 70 } 71 72 private void updateSummary() { 73 final Context context = getContext(); 74 75 final boolean isActivated = mController.isActivated(); 76 final int autoMode = mController.getAutoMode(); 77 78 final String autoModeSummary; 79 switch (autoMode) { 80 default: 81 case NightDisplayController.AUTO_MODE_DISABLED: 82 autoModeSummary = context.getString(isActivated 83 ? R.string.night_display_summary_on_auto_mode_never 84 : R.string.night_display_summary_off_auto_mode_never); 85 break; 86 case NightDisplayController.AUTO_MODE_CUSTOM: 87 if (isActivated) { 88 autoModeSummary = context.getString( 89 R.string.night_display_summary_on_auto_mode_custom, 90 getFormattedTimeString(mController.getCustomEndTime())); 91 } else { 92 autoModeSummary = context.getString( 93 R.string.night_display_summary_off_auto_mode_custom, 94 getFormattedTimeString(mController.getCustomStartTime())); 95 } 96 break; 97 case NightDisplayController.AUTO_MODE_TWILIGHT: 98 autoModeSummary = context.getString(isActivated 99 ? R.string.night_display_summary_on_auto_mode_twilight 100 : R.string.night_display_summary_off_auto_mode_twilight); 101 break; 102 } 103 104 final int summaryFormatResId = isActivated ? R.string.night_display_summary_on 105 : R.string.night_display_summary_off; 106 setSummary(context.getString(summaryFormatResId, autoModeSummary)); 107 } 108 109 @Override 110 public void onActivated(boolean activated) { 111 updateSummary(); 112 } 113 114 @Override 115 public void onAutoModeChanged(int autoMode) { 116 updateSummary(); 117 } 118 119 @Override 120 public void onCustomStartTimeChanged(LocalTime startTime) { 121 updateSummary(); 122 } 123 124 @Override 125 public void onCustomEndTimeChanged(LocalTime endTime) { 126 updateSummary(); 127 } 128} 129