/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You 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 org.apache.oodt.cas.pushpull.util;
//AWT Imports
import java.awt.BorderLayout;
import java.awt.Color;
import java.awt.Dimension;
import java.awt.GridLayout;
import java.awt.Toolkit;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
//Swing Imports
import javax.swing.BorderFactory;
import javax.swing.JButton;
import javax.swing.JFormattedTextField;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.SwingUtilities;
/**
*
* @author bfoster
* @version $Revision$
*
* <p>Use to evaluate whether your regular expressions are
* accepting the correct strings
* </p>.
*/
public class ExpressionValidator extends JPanel {
private static final long serialVersionUID = -2840589940304298547L;
private JLabel exprLabel;
private JLabel validateLabel;
private JLabel resultLabel;
private JFormattedTextField exprField;
private JFormattedTextField validateField;
private JFormattedTextField resultField;
public ExpressionValidator() {
super(new BorderLayout());
exprLabel = new JLabel("Regular Expression: ");
validateLabel = new JLabel("Validate String: ");
resultLabel = new JLabel("Result: ");
exprField = new JFormattedTextField();
exprField.setColumns(60);
validateField = new JFormattedTextField();
validateField.setColumns(60);
resultField = new JFormattedTextField();
resultField.setColumns(60);
resultField.setEditable(false);
resultField.setForeground(Color.red);
exprLabel.setLabelFor(exprField);
validateLabel.setLabelFor(validateField);
resultLabel.setLabelFor(resultField);
JPanel labelPane = new JPanel(new GridLayout(0, 1));
labelPane.add(exprLabel);
labelPane.add(validateLabel);
labelPane.add(resultLabel);
JPanel fieldPane = new JPanel(new GridLayout(0, 1));
fieldPane.add(exprField);
fieldPane.add(validateField);
fieldPane.add(resultField);
JPanel buttonPane = new JPanel(new BorderLayout());
JButton validate = new JButton("Validate");
validate.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent event) {
try {
boolean value = ((String) validateField.getText()).matches((String) exprField.getText());
resultField.setText(value + "");
}catch (Exception e) {
e.printStackTrace();
}
}
});
buttonPane.add(validate, BorderLayout.EAST);
setBorder(BorderFactory.createEmptyBorder(20, 20, 20, 20));
add(labelPane, BorderLayout.WEST);
add(fieldPane, BorderLayout.CENTER);
add(buttonPane, BorderLayout.EAST);
}
public static void main(String[] args) {
SwingUtilities.invokeLater(new Runnable() {
public void run() {
Dimension dim = Toolkit.getDefaultToolkit().getScreenSize();
JFrame frame = new JFrame("Regular Expression Evaluator");
frame.setSize(dim.width / 2, dim.height / 2);
frame.setLocation(dim.width / 3, dim.height / 3);
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.add(new ExpressionValidator());
frame.pack();
frame.setVisible(true);
}
});
}
}