/*
* Open Source Physics software is free software as described near the bottom of this code file.
*
* For additional information and documentation on Open Source Physics please see:
* <http://www.opensourcephysics.org/>
*/
/*
* The org.opensourcephysics.media.core package defines the Open Source Physics
* media framework for working with video and other media.
*
* Copyright (c) 2014 Douglas Brown and Wolfgang Christian.
*
* This is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This software is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston MA 02111-1307 USA
* or view the license online at http://www.gnu.org/copyleft/gpl.html
*
* For additional information and documentation on Open Source Physics,
* please see <http://www.opensourcephysics.org/>.
*/
package org.opensourcephysics.media.core;
import java.awt.Toolkit;
/**
* This is a NumberField that accepts only integers.
*
* @author Douglas Brown
* @version 1.0
*/
public class IntegerField extends NumberField {
/**
* Constructs an IntegerField.
*
* @param columns the number of columns available for text characters
*/
public IntegerField(int columns) {
super(columns);
fixedPattern = fixedPatternByDefault = true;
format.setParseIntegerOnly(true);
setIntValue((int) prevValue);
}
/**
* Gets the integer value from the text field.
*
* @return the value
*/
public int getIntValue() {
int retValue;
String s = getText().trim();
// strip units, if any
if((units!=null)&&!units.equals("")) { //$NON-NLS-1$
int n = s.indexOf(units);
while(n>-1) {
s = s.substring(0, n);
n = s.indexOf(units);
}
}
if(s.equals(format.format(prevValue))) {
return(int) prevValue;
}
try {
retValue = Integer.parseInt(s);
// retValue = format.parse(s).intValue();
if((minValue!=null)&&(retValue<minValue.intValue())) {
setIntValue(minValue.intValue());
return minValue.intValue();
}
if((maxValue!=null)&&(retValue>maxValue.intValue())) {
setIntValue(maxValue.intValue());
return maxValue.intValue();
}
} catch(Exception e) {
Toolkit.getDefaultToolkit().beep();
setIntValue((int) prevValue);
return(int) prevValue;
}
return retValue;
}
/**
* Sets the integer value.
*
* @param value the value
*/
public void setIntValue(int value) {
if(minValue!=null) {
value = Math.max(value, minValue.intValue());
}
if(maxValue!=null) {
value = Math.min(value, maxValue.intValue());
}
String s = format.format(value);
if(units!=null) {
s += units;
}
if(!s.equals(getText())) {
setText(s);
}
prevValue = value;
}
}
/*
* Open Source Physics software is free software; you can redistribute
* it and/or modify it under the terms of the GNU General Public License (GPL) as
* published by the Free Software Foundation; either version 2 of the License,
* or(at your option) any later version.
* Code that uses any portion of the code in the org.opensourcephysics package
* or any subpackage (subdirectory) of this package must must also be be released
* under the GNU GPL license.
*
* This software is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston MA 02111-1307 USA
* or view the license online at http://www.gnu.org/copyleft/gpl.html
*
* Copyright (c) 2007 The Open Source Physics project
* http://www.opensourcephysics.org
*/