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 15 package com.android.settings.display; 16 17 import android.content.Context; 18 import android.hardware.display.ColorDisplayManager; 19 import android.hardware.display.NightDisplayListener; 20 import android.util.AttributeSet; 21 22 import androidx.preference.SwitchPreference; 23 24 import java.time.LocalTime; 25 26 public class NightDisplayPreference extends SwitchPreference 27 implements NightDisplayListener.Callback { 28 29 private ColorDisplayManager mColorDisplayManager; 30 private NightDisplayListener mNightDisplayListener; 31 private NightDisplayTimeFormatter mTimeFormatter; 32 NightDisplayPreference(Context context, AttributeSet attrs)33 public NightDisplayPreference(Context context, AttributeSet attrs) { 34 super(context, attrs); 35 36 mColorDisplayManager = context.getSystemService(ColorDisplayManager.class); 37 mNightDisplayListener = new NightDisplayListener(context); 38 mTimeFormatter = new NightDisplayTimeFormatter(context); 39 } 40 41 @Override onAttached()42 public void onAttached() { 43 super.onAttached(); 44 45 // Listen for changes only while attached. 46 mNightDisplayListener.setCallback(this); 47 48 // Update the summary since the state may have changed while not attached. 49 updateSummary(); 50 } 51 52 @Override onDetached()53 public void onDetached() { 54 super.onDetached(); 55 56 // Stop listening for state changes. 57 mNightDisplayListener.setCallback(null); 58 } 59 60 @Override onActivated(boolean activated)61 public void onActivated(boolean activated) { 62 updateSummary(); 63 } 64 65 @Override onAutoModeChanged(int autoMode)66 public void onAutoModeChanged(int autoMode) { 67 updateSummary(); 68 } 69 70 @Override onCustomStartTimeChanged(LocalTime startTime)71 public void onCustomStartTimeChanged(LocalTime startTime) { 72 updateSummary(); 73 } 74 75 @Override onCustomEndTimeChanged(LocalTime endTime)76 public void onCustomEndTimeChanged(LocalTime endTime) { 77 updateSummary(); 78 } 79 updateSummary()80 private void updateSummary() { 81 setSummary(mTimeFormatter.getAutoModeTimeSummary(getContext(), mColorDisplayManager)); 82 } 83 } 84