/** Copyright by Barry G. Becker, 2000-2011. Licensed under MIT License: http://www.opensource.org/licenses/MIT */
package com.barrybecker4.optimization.parameter.ui;
import com.barrybecker4.optimization.parameter.ParameterChangeListener;
import com.barrybecker4.optimization.parameter.types.Parameter;
import com.barrybecker4.optimization.parameter.types.StringParameter;
import javax.swing.*;
import java.awt.*;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
/**
* Discrete set of dropdown values.
* @author Barry Becker
*/
public class StringParameterWidget extends ParameterWidget implements ActionListener {
private JComboBox dropdown;
public StringParameterWidget(Parameter param, ParameterChangeListener listener) {
super(param, listener);
}
/**
* Create a ui widget appropriate for the parameter type.
*/
@Override
protected void addChildren() {
// create a dropdown
StringParameter sparam = (StringParameter) parameter;
dropdown = new JComboBox(sparam.getStringValues().toArray());
dropdown.setName(parameter.getName());
dropdown.setMaximumSize(new Dimension(200, 20));
dropdown.setToolTipText(parameter.getName());
dropdown.addActionListener(this);
add(dropdown, BorderLayout.CENTER);
}
/**
* Called when a ComboBox selection has changed.
* @param e the item event
*/
public void actionPerformed(ActionEvent e) {
parameter.setValue(dropdown.getSelectedIndex());
doNotification();
}
@Override
public void refreshInternal() {
dropdown.setSelectedItem(parameter.getNaturalValue());
}
@Override
protected int getMaxHeight() {
return 20;
}
}