/*
* 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;
/**
* This is a NumberField that displays numbers in decimal format with a fixed
* number of decimal places.
*
* @author Douglas Brown
* @version 1.0
*/
public class DecimalField extends NumberField {
protected String defaultPattern;
/**
* Constructs a DecimalField.
*
* @param columns the number of character columns
* @param places the number of decimal places to display
*/
public DecimalField(int columns, int places) {
super(columns);
fixedPattern = fixedPatternByDefault = true;
setDecimalPlaces(places);
}
/**
* Sets the number of decimal places.
*
* @param places the number of decimal places to display
*/
public void setDecimalPlaces(int places) {
places = Math.min(places, 5);
places = Math.max(places, 1);
char d = '.';
String pattern = "0"+d; //$NON-NLS-1$
for(int i = 0; i<places; i++) {
pattern += "0"; //$NON-NLS-1$
}
defaultPattern = pattern;
if (userPattern.equals("")) { //$NON-NLS-1$
format.applyPattern(pattern);
}
}
// Override NumberField methods so pattern cannot change
public void setSigFigs(int sigfigs) {}
@Override
public void setExpectedRange(double lower, double upper) {}
@Override
public void setFixedPattern(String pattern) {
if (pattern==null) pattern = ""; //$NON-NLS-1$
pattern = pattern.trim();
if (pattern.equals(userPattern)) return;
userPattern = pattern;
if (userPattern.equals("")) { //$NON-NLS-1$
format.applyPattern(defaultPattern);
}
else {
format.applyPattern(userPattern);
}
setValue(prevValue);
}
}
/*
* 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
*/