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Groups > comp.lang.java.programmer > #19232
| Newsgroups | comp.lang.java.programmer |
|---|---|
| Date | 2012-10-10 12:41 -0700 |
| Message-ID | <f8e072b4-0c3c-4aac-9ded-83c5962cab9a@googlegroups.com> (permalink) |
| Subject | Combobox Project: How to put 4 text items in the combobox |
| From | christopher.m.lusardi@gmail.com |
How do I change the below project, so that it has the following text as the 4 items of the combobox: Apples, Cars, Shrimp, Moon.
package colorcomboboxeditor;
import java.awt.BorderLayout;
import java.awt.Color;
import java.awt.Component;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import javax.swing.ComboBoxEditor;
import javax.swing.JButton;
import javax.swing.JColorChooser;
import javax.swing.JComboBox;
import javax.swing.JFrame;
import javax.swing.event.EventListenerList;
class ColorComboBoxEditor implements ComboBoxEditor
{
final protected JButton editor;
protected EventListenerList listenerList = new EventListenerList();
public ColorComboBoxEditor(Color initialColor)
{
editor = new JButton("");
editor.setBackground(initialColor);
ActionListener actionListener = new ActionListener()
{
public void actionPerformed(ActionEvent e)
{
Color currentBackground = editor.getBackground();
Color color = JColorChooser.showDialog(editor, "Color Chooser", currentBackground);
if ( (color != null) && (currentBackground != color) )
{
editor.setBackground(color);
fireActionEvent(color);
}
}
};
editor.addActionListener(actionListener);
}
public void addActionListener(ActionListener l)
{
listenerList.add(ActionListener.class, l);
}
public Component getEditorComponent()
{
return editor;
}
public Object getItem()
{
return editor.getBackground();
}
public void removeActionListener(ActionListener l)
{
listenerList.remove(ActionListener.class, l);
}
public void selectAll()
{
// Ignore
}
public void setItem(Object newValue)
{
if ( newValue instanceof Color )
{
Color color = (Color) newValue;
editor.setBackground(color);
}
else
{
try
{
Color color = Color.decode(newValue.toString());
editor.setBackground(color);
}
catch (NumberFormatException e)
{
}
}
}
protected void fireActionEvent(Color color)
{
Object listeners[] = listenerList.getListenerList();
for (int i = listeners.length - 2; i >= 0; i -= 2)
{
if ( listeners[i] == ActionListener.class )
{
ActionEvent actionEvent = new ActionEvent(editor, ActionEvent.ACTION_PERFORMED, color.toString());
((ActionListener) listeners[i + 1]).actionPerformed(actionEvent);
}
}
}
}
//-----------
/*
* To change this template, choose Tools | Templates
* and open the template in the editor.
*/
package colorcomboboxeditor;
import java.awt.BorderLayout;
import java.awt.Color;
import javax.swing.JComboBox;
import javax.swing.JFrame;
public class ColorComboBoxEditorDemo
{
public static void main(String args[])
{
Color colors[] = {Color.WHITE, Color.BLACK, Color.RED, Color.BLUE};
JFrame frame = new JFrame("Editable JComboBox");
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
final JComboBox comboBox = new JComboBox(colors);
comboBox.setEditable(true);
comboBox.setEditor(new ColorComboBoxEditor(Color.RED));
frame.add(comboBox, BorderLayout.NORTH);
frame.setSize(300, 100);
frame.setVisible(true);
}
}
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Combobox Project: How to put 4 text items in the combobox christopher.m.lusardi@gmail.com - 2012-10-10 12:41 -0700
Re: Combobox Project: How to put 4 text items in the combobox Knute Johnson <nospam@knutejohnson.com> - 2012-10-10 13:31 -0700
Re: Combobox Project: How to put 4 text items in the combobox clusardi2k@aol.com - 2012-10-10 14:35 -0700
Re: Combobox Project: How to put 4 text items in the combobox Knute Johnson <nospam@knutejohnson.com> - 2012-10-10 16:30 -0700
Re: Combobox Project: How to put 4 text items in the combobox markspace <-@.> - 2012-10-10 16:53 -0700
Re: Combobox Project: How to put 4 text items in the combobox Roedy Green <see_website@mindprod.com.invalid> - 2012-10-11 14:29 -0700
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