/*
* Copyright 2010 Google Inc.
*
* 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 com.google.gwt.view.client;
import java.io.Serializable;
/**
* The range of interest for a single handler.
*/
public class Range implements Serializable {
private int length;
private int start;
/**
* Construct a new {@link Range}.
*
* @param start the start index
* @param length the length
*/
public Range(int start, int length) {
this.start = start;
this.length = length;
}
/**
* Used by RPC.
*/
Range() {
}
/**
* Return true if this ranges's start end length are equal to those of
* the given object.
*/
@Override
public boolean equals(Object o) {
if (!(o instanceof Range)) {
return false;
}
Range r = (Range) o;
return start == r.getStart() && length == r.getLength();
}
/**
* Get the length of the range.
*
* @return the length
*/
public int getLength() {
return length;
}
/**
* Get the start index of the range.
*
* @return the start index
*/
public int getStart() {
return start;
}
/**
* Return a hash code based on this range's start and length.
*/
@Override
public int hashCode() {
return (length * 31) ^ start;
}
/**
* Returns a String representation for debugging.
*/
@Override
public String toString() {
return "Range(" + start + "," + length + ")";
}
}