//=============================================================================
// Copyright 2006-2010 Daniel W. Dyer
//
// Licensed 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.uncommons.watchmaker.examples.travellingsalesman;
import java.awt.BorderLayout;
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.
* @author Daniel Dyer
*/
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());
JPanel 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.
*/
public void updateProgress(final double percentComplete)
{
SwingUtilities.invokeLater(new Runnable()
{
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);
}
}