1 /*
2  * Copyright (C) 2015 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 android.support.v7.util;
18 
19 interface ThreadUtil<T> {
20 
21     interface MainThreadCallback<T> {
22 
updateItemCount(int generation, int itemCount)23         void updateItemCount(int generation, int itemCount);
24 
addTile(int generation, TileList.Tile<T> tile)25         void addTile(int generation, TileList.Tile<T> tile);
26 
removeTile(int generation, int position)27         void removeTile(int generation, int position);
28     }
29 
30     interface BackgroundCallback<T> {
31 
refresh(int generation)32         void refresh(int generation);
33 
updateRange(int rangeStart, int rangeEnd, int extRangeStart, int extRangeEnd, int scrollHint)34         void updateRange(int rangeStart, int rangeEnd, int extRangeStart, int extRangeEnd,
35                          int scrollHint);
36 
loadTile(int position, int scrollHint)37         void loadTile(int position, int scrollHint);
38 
recycleTile(TileList.Tile<T> tile)39         void recycleTile(TileList.Tile<T> tile);
40     }
41 
getMainThreadProxy(MainThreadCallback<T> callback)42     MainThreadCallback<T> getMainThreadProxy(MainThreadCallback<T> callback);
43 
getBackgroundProxy(BackgroundCallback<T> callback)44     BackgroundCallback<T> getBackgroundProxy(BackgroundCallback<T> callback);
45 }
46