1 /* 2 * Copyright (C) 2021 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.accessibility; 18 19 import android.content.Context; 20 import android.text.method.LinkMovementMethod; 21 import android.util.AttributeSet; 22 import android.widget.TextView; 23 24 import androidx.preference.PreferenceViewHolder; 25 26 import com.android.settingslib.widget.FooterPreference; 27 28 /** 29 * A custom preference acting as footer of a page. Disables the movement method by default. 30 */ 31 public final class AccessibilityFooterPreference extends FooterPreference { 32 33 private boolean mLinkEnabled; 34 AccessibilityFooterPreference(Context context, AttributeSet attrs)35 public AccessibilityFooterPreference(Context context, AttributeSet attrs) { 36 super(context, attrs); 37 } 38 AccessibilityFooterPreference(Context context)39 public AccessibilityFooterPreference(Context context) { 40 super(context); 41 } 42 43 @Override onBindViewHolder(PreferenceViewHolder holder)44 public void onBindViewHolder(PreferenceViewHolder holder) { 45 super.onBindViewHolder(holder); 46 47 final TextView title = holder.itemView.findViewById(android.R.id.title); 48 if (mLinkEnabled) { 49 // When a TextView has a movement method, it will set the view to clickable. This makes 50 // View.onTouchEvent always return true and consumes the touch event, essentially 51 // nullifying any return values of MovementMethod.onTouchEvent. 52 // To still allow propagating touch events to the parent when this view doesn't have 53 // links, we only set the movement method here if the text contains links. 54 title.setMovementMethod(LinkMovementMethod.getInstance()); 55 } else { 56 title.setMovementMethod(/* movement= */ null); 57 } 58 } 59 60 /** 61 * Sets the title field supports movement method. 62 */ setLinkEnabled(boolean enabled)63 public void setLinkEnabled(boolean enabled) { 64 if (mLinkEnabled != enabled) { 65 mLinkEnabled = enabled; 66 notifyChanged(); 67 } 68 } 69 70 /** 71 * Returns true if the title field supports movement method. 72 */ isLinkEnabled()73 public boolean isLinkEnabled() { 74 return mLinkEnabled; 75 } 76 } 77