| /* |
| * Copyright 2017 The Android Open Source Project |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| package androidx.car.widget; |
| |
| import java.util.List; |
| |
| /** |
| * Supplies data as {@link ListItem}. |
| */ |
| public abstract class ListItemProvider { |
| |
| /** |
| * Returns {@link ListItem} at requested position. |
| */ |
| public abstract ListItem get(int position); |
| |
| /** |
| * @return number of total items. |
| */ |
| public abstract int size(); |
| |
| /** |
| * A simple provider that wraps around a list. |
| */ |
| public static class ListProvider extends ListItemProvider { |
| private final List<ListItem> mItems; |
| |
| public ListProvider(List<ListItem> items) { |
| mItems = items; |
| } |
| |
| @Override |
| public ListItem get(int position) { |
| return mItems.get(position); |
| } |
| |
| @Override |
| public int size() { |
| return mItems.size(); |
| } |
| } |
| } |