/*
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* Android Wheel Control.
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* https://code.google.com/p/android-wheel/
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*
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* Copyright 2011 Yuri Kanivets
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package com.codbking.widget.view;
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/**
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* Range for visible items.
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*/
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public class ItemsRange {
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// First item number
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private int first;
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// Items count
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private int count;
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/**
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* Default constructor. Creates an empty range
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*/
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public ItemsRange() {
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this(0, 0);
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}
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/**
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* Constructor
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* @param first the number of first item
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* @param count the count of items
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*/
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public ItemsRange(int first, int count) {
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this.first = first;
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this.count = count;
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}
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/**
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* Gets number of first item
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* @return the number of the first item
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*/
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public int getFirst() {
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return first;
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}
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/**
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* Gets number of last item
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* @return the number of last item
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*/
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public int getLast() {
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return getFirst() + getCount() - 1;
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}
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/**
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* Get items count
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* @return the count of items
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*/
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public int getCount() {
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return count;
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}
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/**
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* Tests whether item is contained by range
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* @param index the item number
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* @return true if item is contained
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*/
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public boolean contains(int index) {
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return index >= getFirst() && index <= getLast();
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}
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}
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