1 /* 2 * Copyright 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 androidx.recyclerview.widget; 18 19 interface ThreadUtil<T> { 20 21 interface MainThreadCallback<T> { 22 23 void updateItemCount(int generation, int itemCount); 24 25 void addTile(int generation, TileList.Tile<T> tile); 26 27 void removeTile(int generation, int position); 28 } 29 30 interface BackgroundCallback<T> { 31 32 void refresh(int generation); 33 34 void updateRange(int rangeStart, int rangeEnd, int extRangeStart, int extRangeEnd, 35 int scrollHint); 36 37 void loadTile(int position, int scrollHint); 38 39 void recycleTile(TileList.Tile<T> tile); 40 } 41 42 MainThreadCallback<T> getMainThreadProxy(MainThreadCallback<T> callback); 43 44 BackgroundCallback<T> getBackgroundProxy(BackgroundCallback<T> callback); 45 } 46
