temppopupmenu.java

精通NetBeans光盘源代码,很好很好的资料

/*
 * TempPopupMenu.java
 *
 * Created on 2006年3月31日, 下午10:14
 */

package org.netbeans.swing.menu;

import java.awt.event.MouseAdapter;
import java.awt.event.MouseEvent;
import java.awt.event.MouseListener;
import javax.swing.JPopupMenu;
import javax.swing.event.PopupMenuEvent;

/**
 *
 * @author  boyingking
 */
public class TempPopupMenu extends javax.swing.JFrame 
                  
{
    
    /** Creates new form TempPopupMenu */
    public TempPopupMenu() {
        initComponents();
        //this.addMouseListener(new PopupListener(this.jPopupMenu1));
        this.jButton1.addMouseListener(new PopupListener(this.jPopupMenu1));
    }
    
    /** This method is called from within the constructor to
     * initialize the form.
     * WARNING: Do NOT modify this code. The content of this method is
     * always regenerated by the Form Editor.
     */
    // <editor-fold defaultstate="collapsed" desc=" Generated Code ">//GEN-BEGIN:initComponents
    private void initComponents() {
        jPopupMenu1 = new javax.swing.JPopupMenu();
        jMenuItem1 = new javax.swing.JMenuItem();
        jMenuItem2 = new javax.swing.JMenuItem();
        jMenuItem3 = new javax.swing.JMenuItem();
        jMenuItem4 = new javax.swing.JMenuItem();
        jButton1 = new javax.swing.JButton();
        jLabel1 = new javax.swing.JLabel();

        jPopupMenu1.setToolTipText("");
        jPopupMenu1.setLabel("");
        jMenuItem1.setText("Item");
        jPopupMenu1.add(jMenuItem1);

        jMenuItem2.setText("Item");
        jPopupMenu1.add(jMenuItem2);

        jMenuItem3.setText("Item");
        jPopupMenu1.add(jMenuItem3);

        jMenuItem4.setText("Item");
        jPopupMenu1.add(jMenuItem4);

        setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);
        jButton1.setText("jButton1");

        jLabel1.setText("jLabel1");

        org.jdesktop.layout.GroupLayout layout = new org.jdesktop.layout.GroupLayout(getContentPane());
        getContentPane().setLayout(layout);
        layout.setHorizontalGroup(
            layout.createParallelGroup(org.jdesktop.layout.GroupLayout.LEADING)
            .add(layout.createSequentialGroup()
                .add(48, 48, 48)
                .add(jButton1)
                .add(90, 90, 90)
                .add(jLabel1)
                .addContainerGap(137, Short.MAX_VALUE))
        );
        layout.setVerticalGroup(
            layout.createParallelGroup(org.jdesktop.layout.GroupLayout.LEADING)
            .add(layout.createSequentialGroup()
                .add(76, 76, 76)
                .add(layout.createParallelGroup(org.jdesktop.layout.GroupLayout.TRAILING)
                    .add(jLabel1)
                    .add(jButton1))
                .addContainerGap(199, Short.MAX_VALUE))
        );
        pack();
    }// </editor-fold>//GEN-END:initComponents
    
    /**
     * @param args the command line arguments
     */
    public static void main(String args[]) {
        java.awt.EventQueue.invokeLater(new Runnable() {
            public void run() {
                new TempPopupMenu().setVisible(true);
            }
        });
    }
    
    // Variables declaration - do not modify//GEN-BEGIN:variables
    private javax.swing.JButton jButton1;
    private javax.swing.JLabel jLabel1;
    private javax.swing.JMenuItem jMenuItem1;
    private javax.swing.JMenuItem jMenuItem2;
    private javax.swing.JMenuItem jMenuItem3;
    private javax.swing.JMenuItem jMenuItem4;
    private javax.swing.JPopupMenu jPopupMenu1;
    // End of variables declaration//GEN-END:variables
    class PopupListener extends MouseAdapter {
        JPopupMenu popup;

        PopupListener(JPopupMenu popupMenu) {
            popup = popupMenu;
        }

        public void mousePressed(MouseEvent e) {
            maybeShowPopup(e);
        }

        public void mouseReleased(MouseEvent e) {
            maybeShowPopup(e);
        }

        private void maybeShowPopup(MouseEvent e) {
            if (e.isPopupTrigger()) {
                popup.show(e.getComponent(),
                           e.getX(), e.getY());
            }
        }
    }
}