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import javax.swing.SwingUtilities;
import javax.swing.JPanel;
import javax.swing.JFrame;
import javax.swing.JPopupMenu;
import javax.swing.JMenuItem;
import javax.swing.JTextField;
import javax.swing.Popup;
import java.awt.Rectangle;
import java.awt.event.MouseAdapter;
import java.awt.event.MouseEvent;
public class coller extends JFrame {
private JPanel jContentPane = null;
private JPopupMenu jPopupMenu = null;
private JMenuItem jMenuItem = null;
private JTextField jTextField = null;
private JPopupMenu getJPopupMenu() {
if (jPopupMenu == null) {
jPopupMenu = new JPopupMenu();
jPopupMenu.add(getJMenuItem());
}
return jPopupMenu;
}
private JMenuItem getJMenuItem() {
if (jMenuItem == null) {
jMenuItem = new JMenuItem();
jMenuItem.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent e) {
jTextField.paste();
}
});
}
return jMenuItem;
}
private JTextField getJTextField() {
if (jTextField == null) {
jTextField = new JTextField();
jTextField.setBounds(new Rectangle(142, 24, 100, 57));
}
return jTextField;
}
public static void main(String[] args) {
SwingUtilities.invokeLater(new Runnable() {
public void run() {
coller thisClass = new coller();
thisClass.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
thisClass.setVisible(true);
}
});
}
public coller() {
super();
PopupListener pl = new PopupListener();
addMouseListener(pl);
initialize();
}
private void initialize() {
this.setSize(300, 200);
this.setContentPane(getJContentPane());
this.setTitle("JFrame");
}
private JPanel getJContentPane() {
if (jContentPane == null) {
jContentPane = new JPanel();
jContentPane.setLayout(null);
jContentPane.add(getJTextField(), null);
}
return jContentPane;
}
}
class PopupListener extends MouseAdapter {
public void mousePressed(MouseEvent e) {
maybeShowPopup(e);
}
public void mouseReleased(MouseEvent e) {
maybeShowPopup(e);
}
private void maybeShowPopup(MouseEvent e) {
if(e.isPopupTrigger()) {
jPopupMenu.show(
e.getComponent(), e.getX(), e.getY());
}
}
} |
