Mega Code Archive
Regex Formatter with a JFormattedTextField
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/*
*
* Copyright (c) 1998 Sun Microsystems, Inc. All Rights Reserved.
*
* Sun grants you ("Licensee") a non-exclusive, royalty free, license to use,
* modify and redistribute this software in source and binary code form,
* provided that i) this copyright notice and license appear on all copies of
* the software; and ii) Licensee does not utilize the software in a manner
* which is disparaging to Sun.
*
* This software is provided "AS IS," without a warranty of any kind. ALL
* EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND WARRANTIES, INCLUDING ANY
* IMPLIED WARRANTY OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE OR
* NON-INFRINGEMENT, ARE HEREBY EXCLUDED. SUN AND ITS LICENSORS SHALL NOT BE
* LIABLE FOR ANY DAMAGES SUFFERED BY LICENSEE AS A RESULT OF USING, MODIFYING
* OR DISTRIBUTING THE SOFTWARE OR ITS DERIVATIVES. IN NO EVENT WILL SUN OR ITS
* LICENSORS BE LIABLE FOR ANY LOST REVENUE, PROFIT OR DATA, OR FOR DIRECT,
* INDIRECT, SPECIAL, CONSEQUENTIAL, INCIDENTAL OR PUNITIVE DAMAGES, HOWEVER
* CAUSED AND REGARDLESS OF THE THEORY OF LIABILITY, ARISING OUT OF THE USE OF
* OR INABILITY TO USE SOFTWARE, EVEN IF SUN HAS BEEN ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGES.
*
* This software is not designed or intended for use in on-line control of
* aircraft, air traffic, aircraft navigation or aircraft communications; or in
* the design, construction, operation or maintenance of any nuclear
* facility. Licensee represents and warrants that it will not use or
* redistribute the Software for such purposes.
*/
import java.text.ParseException;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
import java.util.regex.PatternSyntaxException;
import javax.swing.JFormattedTextField;
import javax.swing.JFrame;
import javax.swing.JTextField;
import javax.swing.text.DefaultFormatter;
/**
* A regular expression based implementation of AbstractFormatter.
*/
class RegexFormatter extends DefaultFormatter {
private Pattern pattern;
private Matcher matcher;
public RegexFormatter() {
super();
}
/**
* Creates a regular expression based AbstractFormatter.
* pattern specifies the regular expression that will be used
* to determine if a value is legal.
*/
public RegexFormatter(String pattern) throws PatternSyntaxException {
this();
setPattern(Pattern.compile(pattern));
}
/**
* Creates a regular expression based AbstractFormatter.
* pattern specifies the regular expression that will be used
* to determine if a value is legal.
*/
public RegexFormatter(Pattern pattern) {
this();
setPattern(pattern);
}
/**
* Sets the pattern that will be used to determine if a value is legal.
*/
public void setPattern(Pattern pattern) {
this.pattern = pattern;
}
/**
* Returns the Pattern used to determine if a value is legal.
*/
public Pattern getPattern() {
return pattern;
}
/**
* Sets the Matcher used in the most recent test if a value is
* legal.
*/
protected void setMatcher(Matcher matcher) {
this.matcher = matcher;
}
/**
* Returns the Matcher from the most test.
*/
protected Matcher getMatcher() {
return matcher;
}
/**
* Parses text returning an arbitrary Object. Some formatters
* may return null.
*
* If a Pattern has been specified and the text completely
* matches the regular expression this will invoke setMatcher.
*
* @throws ParseException
* if there is an error in the conversion
* @param text
* String to convert
* @return Object representation of text
*/
public Object stringToValue(String text) throws ParseException {
Pattern pattern = getPattern();
if (pattern != null) {
Matcher matcher = pattern.matcher(text);
if (matcher.matches()) {
setMatcher(matcher);
return super.stringToValue(text);
}
throw new ParseException("Pattern did not match", 0);
}
return text;
}
}
public class UsingRegexFormatter {
public static void main(String[] a){
JFrame frame = new JFrame();
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
JFormattedTextField formattedField = new JFormattedTextField(new RegexFormatter("\\(\\d{3}\\)\\d{3}-\\d{4}"));
frame.add(formattedField,"North");
frame.add(new JTextField(),"South");
frame.setSize(300, 200);
frame.setVisible(true);
}
}
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