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.TextUtils; 21 import android.view.View; 22 import android.view.ViewGroup; 23 import android.widget.ArrayAdapter; 24 import android.widget.ImageView; 25 import android.widget.TextView; 26 27 import androidx.annotation.DrawableRes; 28 import androidx.annotation.NonNull; 29 import androidx.annotation.Nullable; 30 31 import com.android.settings.R; 32 33 import java.util.List; 34 35 /** 36 * An {@link ArrayAdapter} to fill the information of {@link ItemInfo} in the item view. The item 37 * view must have textview to set the title. 38 * 39 * @param <T> the type of elements in the array, inherited from {@link ItemInfo}. 40 */ 41 public class ItemInfoArrayAdapter<T extends ItemInfoArrayAdapter.ItemInfo> extends ArrayAdapter<T> { 42 ItemInfoArrayAdapter(@onNull Context context, @NonNull List<T> items)43 public ItemInfoArrayAdapter(@NonNull Context context, @NonNull List<T> items) { 44 super(context, R.layout.dialog_single_radio_choice_list_item, R.id.title, items); 45 } 46 47 @NonNull 48 @Override getView(int position, @Nullable View convertView, @NonNull ViewGroup parent)49 public View getView(int position, @Nullable View convertView, @NonNull ViewGroup parent) { 50 final View root = super.getView(position, convertView, parent); 51 52 final ItemInfo item = getItem(position); 53 final TextView title = root.findViewById(R.id.title); 54 title.setText(item.mTitle); 55 final TextView summary = root.findViewById(R.id.summary); 56 if (!TextUtils.isEmpty(item.mSummary)) { 57 summary.setVisibility(View.VISIBLE); 58 summary.setText(item.mSummary); 59 } else { 60 summary.setVisibility(View.GONE); 61 } 62 final ImageView image = root.findViewById(R.id.image); 63 if (item.mDrawableId == null) { 64 image.setVisibility(View.GONE); 65 } else { 66 image.setVisibility(View.VISIBLE); 67 image.setImageResource(item.mDrawableId); 68 if (getContext().getResources().getConfiguration().getLayoutDirection() 69 == View.LAYOUT_DIRECTION_LTR) { 70 image.setScaleType(ImageView.ScaleType.FIT_START); 71 } else { 72 image.setScaleType(ImageView.ScaleType.FIT_END); 73 } 74 } 75 return root; 76 } 77 78 /** 79 * Presents a data structure shown in the item view. 80 */ 81 public static class ItemInfo { 82 @NonNull 83 public final CharSequence mTitle; 84 @Nullable 85 public final CharSequence mSummary; 86 @Nullable 87 @DrawableRes 88 public final Integer mDrawableId; 89 ItemInfo(@onNull CharSequence title, @Nullable CharSequence summary, @Nullable @DrawableRes Integer drawableId)90 public ItemInfo(@NonNull CharSequence title, @Nullable CharSequence summary, 91 @Nullable @DrawableRes Integer drawableId) { 92 mTitle = title; 93 mSummary = summary; 94 mDrawableId = drawableId; 95 } 96 } 97 } 98