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 17 package com.android.gallery3d.util; 18 19 // This is an array whose index ranges from min to max (inclusive). 20 public 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
