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 */
16package android.support.v17.leanback.widget;
17
18import android.test.AndroidTestCase;
19
20import java.io.PrintWriter;
21import java.io.StringWriter;
22
23public abstract class GridTest {
24
25    static class Provider implements Grid.Provider {
26
27        int[] mItems;
28        int mCount;
29        int[] mEdges;
30
31        Provider(int[] items) {
32            mItems = items;
33            mCount = items.length;
34            mEdges = new int[mCount];
35        }
36
37        @Override
38        public int getCount() {
39            return mCount;
40        }
41
42        @Override
43        public int createItem(int index, boolean append, Object[] item) {
44            return mItems[index];
45        }
46
47        @Override
48        public void addItem(Object item, int index, int length, int rowIndex, int edge) {
49            if (edge == Integer.MAX_VALUE || edge == Integer.MIN_VALUE) {
50                // initialize edge for first item added
51                edge = 0;
52            }
53            mEdges[index] = edge;
54        }
55
56        @Override
57        public void removeItem(int index) {
58        }
59
60        @Override
61        public int getEdge(int index) {
62            return mEdges[index];
63        }
64
65        @Override
66        public int getSize(int index) {
67            return mItems[index];
68        }
69
70        void scroll(int distance) {
71            for (int i= 0; i < mEdges.length; i++) {
72                mEdges[i] -= distance;
73            }
74        }
75    }
76
77    Provider mProvider;
78
79    static String dump(Grid grid) {
80        StringWriter w = new StringWriter();
81        grid.debugPrint(new PrintWriter(w));
82        return w.toString();
83    }
84}
85