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
17package android.support.v7.util;
18
19interface 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