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.settings.widget; 18 19 import android.content.Context; 20 import android.content.res.TypedArray; 21 import android.support.v7.preference.CheckBoxPreference; 22 import android.support.v7.preference.PreferenceViewHolder; 23 import android.util.AttributeSet; 24 import android.view.View; 25 26 /** 27 * A CheckboxPreference that can disable its checkbox separate from its text. 28 * Differs from CheckboxPreference.setDisabled() in that the text is not dimmed. 29 */ 30 public class DisabledCheckBoxPreference extends CheckBoxPreference { 31 private PreferenceViewHolder mViewHolder; 32 private View mCheckBox; 33 private boolean mEnabledCheckBox; 34 DisabledCheckBoxPreference(Context context, AttributeSet attrs, int defStyleAttr, int defStyleRes)35 public DisabledCheckBoxPreference(Context context, AttributeSet attrs, int defStyleAttr, 36 int defStyleRes) { 37 super(context, attrs, defStyleAttr, defStyleRes); 38 setupDisabledCheckBoxPreference(context, attrs, defStyleAttr, defStyleRes); 39 } 40 DisabledCheckBoxPreference(Context context, AttributeSet attrs, int defStyleAttr)41 public DisabledCheckBoxPreference(Context context, AttributeSet attrs, int defStyleAttr) { 42 super(context, attrs, defStyleAttr); 43 setupDisabledCheckBoxPreference(context, attrs, defStyleAttr, 0); 44 } 45 DisabledCheckBoxPreference(Context context, AttributeSet attrs)46 public DisabledCheckBoxPreference(Context context, AttributeSet attrs) { 47 super(context, attrs); 48 setupDisabledCheckBoxPreference(context, attrs, 0, 0); 49 } 50 DisabledCheckBoxPreference(Context context)51 public DisabledCheckBoxPreference(Context context) { 52 super(context); 53 setupDisabledCheckBoxPreference(context, null, 0, 0); 54 } 55 setupDisabledCheckBoxPreference(Context context, AttributeSet attrs, int defStyleAttr, int defStyleRes)56 private void setupDisabledCheckBoxPreference(Context context, AttributeSet attrs, 57 int defStyleAttr, int defStyleRes) { 58 final TypedArray a = context.obtainStyledAttributes( 59 attrs, com.android.internal.R.styleable.Preference, defStyleAttr, defStyleRes); 60 for (int i = a.getIndexCount() - 1; i >= 0; i--) { 61 int attr = a.getIndex(i); 62 switch (attr) { 63 case com.android.internal.R.styleable.Preference_enabled: 64 mEnabledCheckBox = a.getBoolean(attr, true); 65 break; 66 } 67 } 68 a.recycle(); 69 70 // Always tell super class this preference is enabled. 71 // We manually enable/disable checkbox using enableCheckBox. 72 super.setEnabled(true); 73 enableCheckbox(mEnabledCheckBox); 74 } 75 enableCheckbox(boolean enabled)76 public void enableCheckbox(boolean enabled) { 77 mEnabledCheckBox = enabled; 78 if (mViewHolder != null && mCheckBox != null) { 79 mCheckBox.setEnabled(mEnabledCheckBox); 80 mViewHolder.itemView.setEnabled(mEnabledCheckBox); 81 } 82 } 83 84 @Override onBindViewHolder(PreferenceViewHolder holder)85 public void onBindViewHolder(PreferenceViewHolder holder) { 86 super.onBindViewHolder(holder); 87 mViewHolder = holder; 88 mCheckBox = holder.findViewById(android.R.id.checkbox); 89 90 enableCheckbox(mEnabledCheckBox); 91 } 92 93 @Override performClick(View view)94 protected void performClick(View view) { 95 // only perform clicks if the checkbox is enabled 96 if (mEnabledCheckBox) { 97 super.performClick(view); 98 } 99 } 100 101 } 102