1/*
2 * Copyright (C) 2012 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 com.android.gallery3d.util;
18
19// This is an array whose index ranges from min to max (inclusive).
20public class RangeArray<T> {
21    private T[] mData;
22    private int mOffset;
23
24    public RangeArray(int min, int max) {
25        mData = (T[]) new Object[max - min + 1];
26        mOffset = min;
27    }
28
29    // Wraps around an existing array
30    public RangeArray(T[] src, int min, int max) {
31        if (max - min + 1 != src.length) {
32            throw new AssertionError();
33        }
34        mData = src;
35        mOffset = min;
36    }
37
38    public void put(int i, T object) {
39        mData[i - mOffset] = object;
40    }
41
42    public T get(int i) {
43        return mData[i - mOffset];
44    }
45
46    public int indexOf(T object) {
47        for (int i = 0; i < mData.length; i++) {
48            if (mData[i] == object) return i + mOffset;
49        }
50        return Integer.MAX_VALUE;
51    }
52}
53