|
import java.awt.Component;
import java.awt.ComponentOrientation;
import java.awt.Container;
import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;
import javax.swing.JComboBox;
import javax.swing.JFrame;
import javax.swing.JMenu;
public class JComboBoxDemo extends JFrame {
public JComboBoxDemo() {
super("JComboBoxDemo");
String[] items = { "Anthony", "Lorraine", "Marie" };
JComboBox itemsComboBox = new JComboBox(items);
itemsComboBox.setEditable(true);
itemsComboBox.setMaximumRowCount(3);
this.getContentPane().add(itemsComboBox);
applyOrientation(this, ComponentOrientation.RIGHT_TO_LEFT);
this.validate();
this.repaint();
}
public static void main(String[] args) {
JFrame frame = new JComboBoxDemo();
frame.setDefaultCloseOperation(JFrame.DISPOSE_ON_CLOSE);
frame.pack();
frame.setVisible(true);
}
private void applyOrientation(Component c, ComponentOrientation o) {
c.setComponentOrientation(o);
if (c instanceof JMenu) {
JMenu menu = (JMenu) c;
int ncomponents = menu.getMenuComponentCount();
for (int i = 0; i < ncomponents; ++i) {
applyOrientation(menu.getMenuComponent(i), o);
}
} else if (c instanceof Container) {
Container container = (Container) c;
int ncomponents = container.getComponentCount();
for (int i = 0; i < ncomponents; ++i) {
applyOrientation(container.getComponent(i), o);
}
}
}
}
|
