в 17:44, 31 мая 2010

2010-05-31T17:44:27Z

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2010-05-31T15:32:05Z

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== Adding Menus to and Removing Menus From Menu Bars ==

<p>If you do add or remove menus, you must then revalidate() the menu bar to display the changes.</p>



<source lang="java">
import java.awt.event.KeyEvent;
import javax.swing.JFrame;
import javax.swing.JMenu;
import javax.swing.JMenuBar;
public class AddingRemovingJMenu {
public static void main(final String args[]) {
JFrame frame = new JFrame("MenuSample Example");
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
JMenuBar menuBar = new JMenuBar();
// File Menu, F - Mnemonic
JMenu fileMenu = new JMenu("File");
fileMenu.setMnemonic(KeyEvent.VK_F);
menuBar.add(fileMenu);
JMenu editMenu = new JMenu("Edit");
menuBar.add(editMenu);

menuBar.remove(0);

menuBar.revalidate();

frame.setJMenuBar(menuBar);
frame.setSize(350, 250);
frame.setVisible(true);
}
}</source>



== Creating JMenuBar Components ==



<source lang="java">
import java.awt.event.KeyEvent;
import javax.swing.JFrame;
import javax.swing.JMenu;
import javax.swing.JMenuBar;
import javax.swing.JMenuItem;
public class MenuCreation {
public static void main(final String args[]) {
JFrame frame = new JFrame("MenuSample Example");
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
JMenuBar menuBar = new JMenuBar();
// File Menu, F - Mnemonic
JMenu fileMenu = new JMenu("File");
fileMenu.setMnemonic(KeyEvent.VK_F);
menuBar.add(fileMenu);
// File->New, N - Mnemonic
JMenuItem newMenuItem = new JMenuItem("New", KeyEvent.VK_N);
fileMenu.add(newMenuItem);
frame.setJMenuBar(menuBar);
frame.setSize(350, 250);
frame.setVisible(true);
}
}</source>



== Customize menu layout by changing the menu bar to use a top-to-bottom box layout, and the popup menu to use a left-to-right box layout ==



<source lang="java">
/*
*
* Copyright (c) 1998 Sun Microsystems, Inc. All Rights Reserved.
*
* Sun grants you ("Licensee") a non-exclusive, royalty free, license to use,
* modify and redistribute this software in source and binary code form,
* provided that i) this copyright notice and license appear on all copies of
* the software; and ii) Licensee does not utilize the software in a manner
* which is disparaging to Sun.
*
* This software is provided "AS IS," without a warranty of any kind. ALL
* EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND WARRANTIES, INCLUDING ANY
* IMPLIED WARRANTY OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE OR
* NON-INFRINGEMENT, ARE HEREBY EXCLUDED. SUN AND ITS LICENSORS SHALL NOT BE
* LIABLE FOR ANY DAMAGES SUFFERED BY LICENSEE AS A RESULT OF USING, MODIFYING
* OR DISTRIBUTING THE SOFTWARE OR ITS DERIVATIVES. IN NO EVENT WILL SUN OR ITS
* LICENSORS BE LIABLE FOR ANY LOST REVENUE, PROFIT OR DATA, OR FOR DIRECT,
* INDIRECT, SPECIAL, CONSEQUENTIAL, INCIDENTAL OR PUNITIVE DAMAGES, HOWEVER
* CAUSED AND REGARDLESS OF THE THEORY OF LIABILITY, ARISING OUT OF THE USE OF
* OR INABILITY TO USE SOFTWARE, EVEN IF SUN HAS BEEN ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGES.
*
* This software is not designed or intended for use in on-line control of
* aircraft, air traffic, aircraft navigation or aircraft communications; or in
* the design, construction, operation or maintenance of any nuclear
* facility. Licensee represents and warrants that it will not use or
* redistribute the Software for such purposes.
*/

import java.awt.BorderLayout;
import java.awt.Color;
import java.awt.Container;
import java.awt.Dimension;
import javax.swing.BorderFactory;
import javax.swing.BoxLayout;
import javax.swing.JFrame;
import javax.swing.JMenu;
import javax.swing.JMenuBar;
import javax.swing.JPopupMenu;
/**
* @author ges
* @author kwalrath
*/
/* MenuLayoutDemo.java requires no other files. */
public class MenuLayoutDemo {
public JMenuBar createMenuBar() {
JMenuBar menuBar = new JMenuBar();
menuBar.setLayout(new BoxLayout(menuBar, BoxLayout.PAGE_AXIS));
menuBar.add(createMenu("Menu 1"));
menuBar.add(createMenu("Menu 2"));
menuBar.add(createMenu("Menu 3"));
menuBar.setBorder(BorderFactory.createMatteBorder(0, 0, 0, 1, Color.BLACK));
return menuBar;
}
// used by createMenuBar
public JMenu createMenu(String title) {
JMenu m = new HorizontalMenu(title);
m.add("Menu item #1 in " + title);
m.add("Menu item #2 in " + title);
m.add("Menu item #3 in " + title);
JMenu submenu = new HorizontalMenu("Submenu");
submenu.add("Submenu item #1");
submenu.add("Submenu item #2");
m.add(submenu);
return m;
}
/**
* Create the GUI and show it. For thread safety, this method should be
* invoked from the event-dispatching thread.
*/
private static void createAndShowGUI() {
// Create and set up the window.
JFrame frame = new JFrame("MenuLayoutDemo");
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
// Create and set up the content pane.
MenuLayoutDemo demo = new MenuLayoutDemo();
Container contentPane = frame.getContentPane();
contentPane.setBackground(Color.WHITE); // contrasting bg
contentPane.add(demo.createMenuBar(), BorderLayout.LINE_START);
// Display the window.
frame.setSize(300, 150);
frame.setVisible(true);
}
public static void main(String[] args) {
// Schedule a job for the event-dispatching thread:
// creating and showing this application"s GUI.
javax.swing.SwingUtilities.invokeLater(new Runnable() {
public void run() {
createAndShowGUI();
}
});
}
class HorizontalMenu extends JMenu {
HorizontalMenu(String label) {
super(label);
JPopupMenu pm = getPopupMenu();
pm.setLayout(new BoxLayout(pm, BoxLayout.LINE_AXIS));
}
public Dimension getMinimumSize() {
return getPreferredSize();
}
public Dimension getMaximumSize() {
return getPreferredSize();
}
public void setPopupMenuVisible(boolean b) {
boolean isVisible = isPopupMenuVisible();
if (b != isVisible) {
if ((b == true) && isShowing()) {
// Set location of popupMenu (pulldown or pullright).
// Perhaps this should be dictated by L&F.
int x = 0;
int y = 0;
Container parent = getParent();
if (parent instanceof JPopupMenu) {
x = 0;
y = getHeight();
} else {
x = getWidth();
y = 0;
}
getPopupMenu().show(this, x, y);
} else {
getPopupMenu().setVisible(false);
}
}
}
}
}</source>



== Customizing JMenuBar Look and Feel ==

Property StringObject TypeMenuBar.actionMapActionMapMenuBar.backgroundColorMenuBar.borderBorderMenuBar.borderColorColorMenuBar.darkShadowColorMenuBar.fontFontMenuBar.foregroundColorMenuBar.gradientListMenuBar.highlightColorMenuBar.shadowColorMenuBar.windowBindingsObject[ ]MenuBarUIString

== Menu Accelerator ==



<source lang="java">
import java.awt.Event;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.KeyEvent;
import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JMenu;
import javax.swing.JMenuBar;
import javax.swing.JMenuItem;
import javax.swing.KeyStroke;
public class MenuAcceleratorKeyStroke extends JFrame {
public MenuAcceleratorKeyStroke() {
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
JMenuBar bar = new JMenuBar();
JMenu menu = new JMenu("File");
menu.setMnemonic("f");
bar.add(menu);
JMenuItem exit = new JMenuItem("Exit");
exit.setMnemonic("x");
exit.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
System.out.println("Exit performed");
MenuAcceleratorKeyStroke.this.dispose();
System.exit(0);
}
});
menu.add(exit);
menu = new JMenu("Edit");
menu.setMnemonic("e");
bar.add(menu);
EditListener l = new EditListener();
JMenuItem mi;
mi = menu.add(new JMenuItem("Cut", "t"));
mi.setAccelerator(KeyStroke.getKeyStroke(KeyEvent.VK_X, Event.CTRL_MASK));
mi.addActionListener(l);
mi = menu.add(new JMenuItem("Copy", "c"));
mi.setAccelerator(KeyStroke.getKeyStroke(KeyEvent.VK_C, Event.CTRL_MASK));
mi.addActionListener(l);
mi = menu.add(new JMenuItem("Paste", "p"));
mi.setAccelerator(KeyStroke.getKeyStroke(KeyEvent.VK_V, Event.CTRL_MASK));
mi.addActionListener(l);
setJMenuBar(bar);
getContentPane().add(new JLabel("A placeholder"));
pack();
setSize(300, 300);
setVisible(true);
}
private class EditListener implements ActionListener {
public void actionPerformed(ActionEvent e) {
System.out.println(e.getActionCommand());
}
}
public static void main(String arg[]) {
new MenuAcceleratorKeyStroke();
}
}</source>



== Shows how to right-align a menu in the menu bar, using a glue component ==



<source lang="java">
/*
*
* Copyright (c) 1998 Sun Microsystems, Inc. All Rights Reserved.
*
* Sun grants you ("Licensee") a non-exclusive, royalty free, license to use,
* modify and redistribute this software in source and binary code form,
* provided that i) this copyright notice and license appear on all copies of
* the software; and ii) Licensee does not utilize the software in a manner
* which is disparaging to Sun.
*
* This software is provided "AS IS," without a warranty of any kind. ALL
* EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND WARRANTIES, INCLUDING ANY
* IMPLIED WARRANTY OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE OR
* NON-INFRINGEMENT, ARE HEREBY EXCLUDED. SUN AND ITS LICENSORS SHALL NOT BE
* LIABLE FOR ANY DAMAGES SUFFERED BY LICENSEE AS A RESULT OF USING, MODIFYING
* OR DISTRIBUTING THE SOFTWARE OR ITS DERIVATIVES. IN NO EVENT WILL SUN OR ITS
* LICENSORS BE LIABLE FOR ANY LOST REVENUE, PROFIT OR DATA, OR FOR DIRECT,
* INDIRECT, SPECIAL, CONSEQUENTIAL, INCIDENTAL OR PUNITIVE DAMAGES, HOWEVER
* CAUSED AND REGARDLESS OF THE THEORY OF LIABILITY, ARISING OUT OF THE USE OF
* OR INABILITY TO USE SOFTWARE, EVEN IF SUN HAS BEEN ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGES.
*
* This software is not designed or intended for use in on-line control of
* aircraft, air traffic, aircraft navigation or aircraft communications; or in
* the design, construction, operation or maintenance of any nuclear
* facility. Licensee represents and warrants that it will not use or
* redistribute the Software for such purposes.
*/

import javax.swing.Box;
import javax.swing.JFrame;
import javax.swing.JMenu;
import javax.swing.JMenuBar;
/**
* @author ges
* @author kwalrath
*/
/* MenuGlueDemo.java requires no other files. */
public class MenuGlueDemo {
public JMenuBar createMenuBar() {
JMenuBar menuBar = new JMenuBar();
menuBar.add(createMenu("Menu 1"));
menuBar.add(createMenu("Menu 2"));
menuBar.add(Box.createHorizontalGlue());
menuBar.add(createMenu("Menu 3"));
return menuBar;
}
public JMenu createMenu(String title) {
JMenu m = new JMenu(title);
m.add("Menu item #1 in " + title);
m.add("Menu item #2 in " + title);
m.add("Menu item #3 in " + title);
return m;
}
/**
* Create the GUI and show it. For thread safety, this method should be
* invoked from the event-dispatching thread.
*/
private static void createAndShowGUI() {
// Create and set up the window.
JFrame frame = new JFrame("MenuGlueDemo");
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
// Create and set up the content pane.
MenuGlueDemo demo = new MenuGlueDemo();
frame.setContentPane(demo.createMenuBar());
// Display the window.
frame.setSize(300, 100);
frame.setVisible(true);
}
public static void main(String[] args) {
// Schedule a job for the event-dispatching thread:
// creating and showing this application"s GUI.
javax.swing.SwingUtilities.invokeLater(new Runnable() {
public void run() {
createAndShowGUI();
}
});
}
}</source>



== Vertical menu bar ==

<p>If you want a vertical menu bar, simply change the LayoutManager of
the menu bar component.</p>



<source lang="java">
import java.awt.GridLayout;
import java.awt.LayoutManager;
import java.awt.event.KeyEvent;
import javax.swing.JFrame;
import javax.swing.JMenu;
import javax.swing.JMenuBar;
class VerticalMenuBar extends JMenuBar {
private static final LayoutManager grid = new GridLayout(0,1);
public VerticalMenuBar() {
setLayout(grid);
}
}

public class VerticalMenuBarDemo {
public static void main(final String args[]) {
JFrame frame = new JFrame("MenuSample Example");
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
JMenuBar menuBar = new VerticalMenuBar();
// File Menu, F - Mnemonic
JMenu fileMenu = new JMenu("File");
fileMenu.setMnemonic(KeyEvent.VK_F);
menuBar.add(fileMenu);
JMenu editMenu = new JMenu("Edit");
menuBar.add(editMenu);

frame.setJMenuBar(menuBar);
frame.setSize(350, 250);
frame.setVisible(true);
}
}</source>

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в 17:44, 31 мая 2010

Admin: 1 версия