1 /* 2 * Copyright (C) 2015 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 android.support.v7.preference; 18 19 import android.content.Context; 20 import android.content.res.TypedArray; 21 import android.support.v4.content.res.TypedArrayUtils; 22 import android.util.AttributeSet; 23 import android.view.View; 24 import android.view.accessibility.AccessibilityManager; 25 import android.widget.Checkable; 26 27 /** 28 * A {@link Preference} that provides checkbox widget 29 * functionality. 30 * <p> 31 * This preference will store a boolean into the SharedPreferences. 32 * 33 * @attr ref android.R.styleable#CheckBoxPreference_summaryOff 34 * @attr ref android.R.styleable#CheckBoxPreference_summaryOn 35 * @attr ref android.R.styleable#CheckBoxPreference_disableDependentsState 36 */ 37 public class CheckBoxPreference extends TwoStatePreference { 38 CheckBoxPreference(Context context, AttributeSet attrs, int defStyleAttr)39 public CheckBoxPreference(Context context, AttributeSet attrs, int defStyleAttr) { 40 this(context, attrs, defStyleAttr, 0); 41 } 42 CheckBoxPreference( Context context, AttributeSet attrs, int defStyleAttr, int defStyleRes)43 public CheckBoxPreference( 44 Context context, AttributeSet attrs, int defStyleAttr, int defStyleRes) { 45 super(context, attrs, defStyleAttr, defStyleRes); 46 47 final TypedArray a = context.obtainStyledAttributes(attrs, 48 R.styleable.CheckBoxPreference, defStyleAttr, defStyleRes); 49 50 setSummaryOn(TypedArrayUtils.getString(a, R.styleable.CheckBoxPreference_summaryOn, 51 R.styleable.CheckBoxPreference_android_summaryOn)); 52 53 setSummaryOff(TypedArrayUtils.getString(a, R.styleable.CheckBoxPreference_summaryOff, 54 R.styleable.CheckBoxPreference_android_summaryOff)); 55 56 setDisableDependentsState(TypedArrayUtils.getBoolean(a, 57 R.styleable.CheckBoxPreference_disableDependentsState, 58 R.styleable.CheckBoxPreference_android_disableDependentsState, false)); 59 60 a.recycle(); 61 } 62 CheckBoxPreference(Context context, AttributeSet attrs)63 public CheckBoxPreference(Context context, AttributeSet attrs) { 64 this(context, attrs, R.attr.checkBoxPreferenceStyle); 65 } 66 CheckBoxPreference(Context context)67 public CheckBoxPreference(Context context) { 68 this(context, null); 69 } 70 71 @Override onBindViewHolder(PreferenceViewHolder holder)72 public void onBindViewHolder(PreferenceViewHolder holder) { 73 super.onBindViewHolder(holder); 74 75 View checkboxView = holder.findViewById(R.id.checkbox); 76 if (checkboxView != null && checkboxView instanceof Checkable) { 77 ((Checkable) checkboxView).setChecked(mChecked); 78 } 79 80 syncSummaryView(holder); 81 } 82 83 /** 84 * @hide 85 */ 86 @Override performClick(View view)87 protected void performClick(View view) { 88 super.performClick(view); 89 syncViewIfAccessibilityEnabled(view); 90 } 91 syncViewIfAccessibilityEnabled(View view)92 private void syncViewIfAccessibilityEnabled(View view) { 93 AccessibilityManager accessibilityManager = (AccessibilityManager) 94 getContext().getSystemService(Context.ACCESSIBILITY_SERVICE); 95 if (!accessibilityManager.isEnabled()) { 96 return; 97 } 98 99 View checkboxView = view.findViewById(R.id.checkbox); 100 syncCheckboxView(checkboxView); 101 102 View summaryView = view.findViewById(android.R.id.summary); 103 syncSummaryView(summaryView); 104 } 105 syncCheckboxView(View view)106 private void syncCheckboxView(View view) { 107 if (view instanceof Checkable) { 108 ((Checkable) view).setChecked(mChecked); 109 } 110 } 111 } 112