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/**
*
*/
package de.fhswf.in.inf.se.notepadMinusMinus.util;
import javafx.util.StringConverter;
/**
* An {@link Integer} converter that checks the boundaries.
*
* @author Stefan Suhren
* @version 1.0
*/
public class OverLimitIntegerStringConverter extends StringConverter<Integer>
{
private int minAllowedValue;
/**
* Create and {@link OverLimitIntegerStringConverter} that uses the given
* limit.
*
* @param minAllowedValue
* The smallest values that is still valid.
*/
public OverLimitIntegerStringConverter(int minAllowedValue)
{
this.minAllowedValue = minAllowedValue;
}
/*
* (non-Javadoc)
*
* @see javafx.util.StringConverter#toString(java.lang.Object)
*/
@Override
public String toString(Integer object)
{
// If the specified value is null or not positive, return a zero-length
// String
if (object == null || object.intValue() < minAllowedValue)
{
return "";
}
return (Integer.toString(object.intValue()));
}
/*
* (non-Javadoc)
*
* @see javafx.util.StringConverter#fromString(java.lang.String)
*/
@Override
public Integer fromString(String string)
{
// If the specified value is null or zero-length, return null
if (string == null)
{
return null;
}
string = string.trim();
if (string.length() < 1)
{
return null;
}
// If the specified value is 0 or negative, return null
Integer object = Integer.valueOf(string);
if (object.intValue() < minAllowedValue)
{
return null;
}
return object;
}
}
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