1 /* 2 * Copyright (C) 2009 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.cooliris.media; 18 19 public abstract class VirtualFeed<E> { 20 protected int mLoadedBegin = 0; 21 protected int mLoadedEnd = 0; 22 protected int mLoadingBegin = 0; 23 protected int mLoadingEnd = 0; 24 protected int mLoadableBegin = Integer.MIN_VALUE; 25 protected int mLoadableEnd = Integer.MAX_VALUE; 26 protected final Deque<E> mElements = new Deque<E>(); 27 28 public VirtualFeed() { 29 } 30 31 public abstract void setLoadingRange(int begin, int end); 32 33 public final E get(int index) { 34 35 return null; 36 37 } 38 39 public final int getLoadedBegin() { 40 return mLoadedBegin; 41 } 42 43 public final int getLoadedEnd() { 44 return mLoadedEnd; 45 } 46 47 public final int getLoadingBegin() { 48 return mLoadingBegin; 49 } 50 51 public final int getLoadingEnd() { 52 return mLoadingEnd; 53 } 54 55 public final int getLoadableBegin() { 56 return mLoadableBegin; 57 } 58 59 public final int getLoadableEnd() { 60 return mLoadableEnd; 61 } 62 63 public interface RangeListener<E> { 64 void onRangeUpdated(VirtualFeed<E> array); 65 } 66 } 67
