JAVA - Drop Down Button

 

Daftar File

import java.awt.FlowLayout;

import java.awt.HeadlessException;

import java.awt.event.ActionEvent;

import java.awt.event.ActionListener;

import javax.swing.ImageIcon;

import javax.swing.JButton;

import javax.swing.JFrame;

import javax.swing.JMenu;

import javax.swing.JMenuBar;

import javax.swing.JMenuItem;

import javax.swing.JPopupMenu;

import javax.swing.JSeparator;

import javax.swing.JToolBar;

import javax.swing.SwingUtilities;

import javax.swing.UIManager;

import org.openide.awt.DropDownButtonFactory;

/**

 * This Swing program demonstrates how to create a drop down button.

 * @author www.codejava.net

 *

 */

public class DropDownButtonDemo extends JFrame implements ActionListener {

public DropDownButtonDemo() throws HeadlessException {

super("CodeJava - Drop Down Button Demo");

createMenuBar();

createToolbar();

setSize(360, 200);

setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

}

private void createToolbar() {

JToolBar toolbar = new JToolBar();

JButton buttonOpen = new JButton(new ImageIcon(

getClass().getResource("open.png")));

toolbar.add(buttonOpen);

toolbar.add(new JSeparator());

JButton buttonSave = new JButton(new ImageIcon(

getClass().getResource("save.png")));

toolbar.add(buttonSave);

toolbar.add(new JSeparator());

JButton dropDownButton = createDropDownButton();

toolbar.add(dropDownButton);

toolbar.add(new JSeparator());

JButton buttonRun = new JButton(new ImageIcon(

getClass().getResource("run.png")));

toolbar.add(buttonRun);

setLayout(new FlowLayout(FlowLayout.LEFT));

add(toolbar);

}

private JButton createDropDownButton() {

JPopupMenu popupMenu = createDropDownMenu();

ImageIcon icon = new ImageIcon(getClass().getResource("new.gif"));

JButton dropDownButton = DropDownButtonFactory.createDropDownButton(icon, popupMenu);

dropDownButton.addActionListener(this);

return dropDownButton;

}

private JPopupMenu createDropDownMenu() {

JPopupMenu popupMenu = new JPopupMenu();

JMenuItem menuItemCreateSpringProject = new JMenuItem("Spring Project");

popupMenu.add(menuItemCreateSpringProject);

JMenuItem menuItemCreateHibernateProject = new JMenuItem("Hibernate Project");

popupMenu.add(menuItemCreateHibernateProject);

JMenuItem menuItemCreateStrutsProject = new JMenuItem("Struts Project");

popupMenu.add(menuItemCreateStrutsProject);

menuItemCreateSpringProject.addActionListener(this);

menuItemCreateHibernateProject.addActionListener(this);

menuItemCreateStrutsProject.addActionListener(this);

return popupMenu;

}

private void createMenuBar() {

JMenuBar menuBar = new JMenuBar();

setJMenuBar(menuBar);

JMenu menuFile = new JMenu("File");

JMenuItem menuItemExit = new JMenuItem("Exit");

menuFile.add(menuItemExit);

menuBar.add(menuFile);

}

public static void main(String[] args) throws Exception {

UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName());

SwingUtilities.invokeLater(new Runnable() {

@Override

public void run() {

new DropDownButtonDemo().setVisible(true);

}

});

}

@Override

public void actionPerformed(ActionEvent evt) {

Object source = evt.getSource();

if (source instanceof JMenuItem) {

JMenuItem clickedMenuItem = (JMenuItem) source;

String menuText = clickedMenuItem.getText();

System.out.println("Create a " + menuText);

} else if (source instanceof JButton) {

System.out.println("Create a default project");

}

}

}