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