ToolTip ComboBox Example : ComboBox « Swing Components « Java
ToolTip ComboBox Example
// Example from http://www.crionics.com/products/opensource/faq/swing_ex/SwingExamples.html
/* (swing1.1.1beta2) swing#1785 */
import java.awt.Component;
import java.awt.FlowLayout;
import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;
import javax.swing.JComboBox;
import javax.swing.JFrame;
import javax.swing.JList;
import javax.swing.UIManager;
import javax.swing.plaf.basic.BasicComboBoxRenderer;
/**
* @version 1.0 06/05/99
*/
public class ToolTipComboBoxExample extends JFrame {
String[] items = { "jw", "ja", "la" };
String[] tooltips = { "Javanese ", "Japanese ", "Latin " };
public ToolTipComboBoxExample() {
super("ToolTip ComboBox Example");
JComboBox combo = new JComboBox(items);
combo.setRenderer(new MyComboBoxRenderer());
getContentPane().setLayout(new FlowLayout());
getContentPane().add(combo);
}
class MyComboBoxRenderer extends BasicComboBoxRenderer {
public Component getListCellRendererComponent(JList list, Object value,
int index, boolean isSelected, boolean cellHasFocus) {
if (isSelected) {
setBackground(list.getSelectionBackground());
setForeground(list.getSelectionForeground());
if (-1 < index) {
list.setToolTipText(tooltips[index]);
}
} else {
setBackground(list.getBackground());
setForeground(list.getForeground());
}
setFont(list.getFont());
setText((value == null) ? "" : value.toString());
return this;
}
}
public static void main(String args[]) {
try {
UIManager.setLookAndFeel("com.sun.java.swing.plaf.windows.WindowsLookAndFeel");
} catch (Exception evt) {}
ToolTipComboBoxExample frame = new ToolTipComboBoxExample();
frame.addWindowListener(new WindowAdapter() {
public void windowClosing(WindowEvent e) {
System.exit(0);
}
});
frame.setSize(200, 140);
frame.setVisible(true);
}
}
