1 /* 2 * Copyright (C) 2018 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.car.settings.common; 18 19 import android.content.Context; 20 import android.util.AttributeSet; 21 import android.view.View; 22 import android.widget.CompoundButton; 23 import android.widget.Switch; 24 25 import com.android.car.settings.R; 26 import com.android.car.ui.preference.CarUiTwoActionPreference; 27 28 /** A preference that can be clicked on one side and toggled on another. */ 29 public class MasterSwitchPreference extends CarUiTwoActionPreference { 30 31 /** 32 * Interface definition for a callback to be invoked when the switch is toggled. 33 */ 34 public interface OnSwitchToggleListener { 35 /** 36 * Called when a switch was toggled. 37 * 38 * @param preference the preference whose switch was toggled. 39 * @param isChecked the new state of the switch. 40 */ onToggle(MasterSwitchPreference preference, boolean isChecked)41 void onToggle(MasterSwitchPreference preference, boolean isChecked); 42 } 43 44 private Switch mSwitch; 45 private boolean mIsChecked; 46 private OnSwitchToggleListener mToggleListener; 47 48 private final CompoundButton.OnCheckedChangeListener mCheckedChangeListener = 49 (buttonView, isChecked) -> { 50 if (mToggleListener != null) { 51 mToggleListener.onToggle(this, isChecked); 52 } 53 }; 54 MasterSwitchPreference(Context context, AttributeSet attrs, int defStyleAttr, int defStyleRes)55 public MasterSwitchPreference(Context context, AttributeSet attrs, 56 int defStyleAttr, int defStyleRes) { 57 super(context, attrs, defStyleAttr, defStyleRes); 58 init(); 59 } 60 MasterSwitchPreference(Context context, AttributeSet attrs, int defStyleAttr)61 public MasterSwitchPreference(Context context, AttributeSet attrs, int defStyleAttr) { 62 super(context, attrs, defStyleAttr); 63 init(); 64 } 65 MasterSwitchPreference(Context context, AttributeSet attrs)66 public MasterSwitchPreference(Context context, AttributeSet attrs) { 67 super(context, attrs); 68 init(); 69 } 70 MasterSwitchPreference(Context context)71 public MasterSwitchPreference(Context context) { 72 super(context); 73 init(); 74 } 75 init()76 private void init() { 77 setWidgetLayoutResource(R.layout.master_switch_widget); 78 } 79 80 /** Sets the listener that handles the change in switch state. */ setSwitchToggleListener(OnSwitchToggleListener listener)81 public void setSwitchToggleListener(OnSwitchToggleListener listener) { 82 mToggleListener = listener; 83 } 84 85 /** Gets the listener that handles the change in switch state. */ getSwitchToggleListener()86 public OnSwitchToggleListener getSwitchToggleListener() { 87 return mToggleListener; 88 } 89 90 @Override onBindWidgetFrame(View widgetFrame)91 protected void onBindWidgetFrame(View widgetFrame) { 92 mSwitch = widgetFrame.findViewById(R.id.master_switch); 93 mSwitch.setChecked(mIsChecked); 94 mSwitch.setOnCheckedChangeListener(mCheckedChangeListener); 95 widgetFrame.setOnClickListener(v -> setSwitchChecked(!mIsChecked)); 96 } 97 98 /** 99 * Sets the state of the switch. Can be set even when it isn't visible or bound in order to set 100 * the initial state. 101 */ setSwitchChecked(boolean checked)102 public void setSwitchChecked(boolean checked) { 103 mIsChecked = checked; 104 if (!isActionShown()) { 105 return; 106 } 107 108 if (mSwitch != null) { 109 mSwitch.setChecked(checked); 110 } 111 } 112 113 /** Gets the state of the switch. */ isSwitchChecked()114 public boolean isSwitchChecked() { 115 return mIsChecked; 116 } 117 } 118