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import java.awt.BorderLayout;
import java.awt.Rectangle;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.KeyEvent;
import javax.swing.JComponent;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JMenuItem;
import javax.swing.JPopupMenu;
import javax.swing.JTextField;
import javax.swing.KeyStroke;
import javax.swing.text.BadLocationException;
public class PopupSample {
public static void main(String args[]) {
JFrame frame = new JFrame("Popup Example");
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
final JPopupMenu popup = new JPopupMenu();
JMenuItem menuItem1 = new JMenuItem("Option 1");
popup.add(menuItem1);
JMenuItem menuItem2 = new JMenuItem("Option 2");
popup.add(menuItem2);
final JTextField textField = new JTextField();
frame.add(textField, BorderLayout.NORTH);
ActionListener actionListener = new ActionListener() {
public void actionPerformed(ActionEvent actionEvent) {
try {
int dotPosition = textField.getCaretPosition();
Rectangle popupLocation = textField.modelToView(dotPosition);
popup.show(textField, popupLocation.x, popupLocation.y);
} catch (BadLocationException badLocationException) {
System.err.println("Oops");
}
}
};
KeyStroke keystroke = KeyStroke.getKeyStroke(KeyEvent.VK_PERIOD, 0, false);
textField.registerKeyboardAction(actionListener, keystroke, JComponent.WHEN_FOCUSED);
frame.add(new JLabel("Press '.' to activate Popup menu"), BorderLayout.SOUTH);
frame.setSize(250, 150);
frame.setVisible(true);
}
}
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