/**
* 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.mahout.ga.watchmaker.travellingsalesman;
import java.awt.BorderLayout;
import java.awt.Container;
import java.awt.Font;
import java.awt.event.ActionListener;
import javax.swing.BorderFactory;
import javax.swing.JButton;
import javax.swing.JPanel;
import javax.swing.JProgressBar;
import javax.swing.JScrollPane;
import javax.swing.JTextArea;
import javax.swing.SwingUtilities;
/**
* Panel for controlling the execution of the Travelling Salesman applet. Contains controls for starting and
* stopping the route-finding algorithms and for displaying progress and results.
*
* <br>
* The original code is from <b>the Watchmaker project</b> (https://watchmaker.dev.java.net/).
*/
final class ExecutionPanel extends JPanel implements ProgressListener {
private final JButton startButton;
private final JTextArea output;
private final JScrollPane scroller;
private final JProgressBar progressBar;
ExecutionPanel() {
super(new BorderLayout());
Container controlPanel = new JPanel(new BorderLayout());
startButton = new JButton("Start");
controlPanel.add(startButton, BorderLayout.WEST);
progressBar = new JProgressBar(0, 100);
controlPanel.add(progressBar, BorderLayout.CENTER);
add(controlPanel, BorderLayout.NORTH);
output = new JTextArea();
output.setEditable(false);
output.setLineWrap(true);
output.setWrapStyleWord(true);
output.setFont(new Font("Monospaced", Font.PLAIN, 12));
scroller = new JScrollPane(output);
scroller.setBorder(BorderFactory.createTitledBorder("Results"));
add(scroller, BorderLayout.CENTER);
}
/**
* Adds logic to the start button so that something happens when it is clicked.
*
* @param actionListener
* The action to perform when the button is clicked.
*/
public void addActionListener(ActionListener actionListener) {
startButton.addActionListener(actionListener);
}
/**
* Updates the position of the progress bar.
*/
@Override
public void updateProgress(final double percentComplete) {
SwingUtilities.invokeLater(new Runnable() {
@Override
public void run() {
progressBar.setValue((int) percentComplete);
}
});
}
/**
* Appends the specified text to this panel's text area.
*
* @param text
* The text to append.
*/
public void appendOutput(String text) {
output.append(text);
}
@Override
public void setEnabled(boolean b) {
startButton.setEnabled(b);
scroller.setEnabled(b);
super.setEnabled(b);
}
}