Provide a pop-up menu using a Frame : Menu « Swing JFC « Java






Provide a pop-up menu using a Frame

Provide a pop-up menu using a Frame
   
/*
 * Copyright (c) Ian F. Darwin, http://www.darwinsys.com/, 1996-2002.
 * All rights reserved. Software written by Ian F. Darwin and others.
 * $Id: LICENSE,v 1.8 2004/02/09 03:33:38 ian Exp $
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS''
 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS
 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 * POSSIBILITY OF SUCH DAMAGE.
 * 
 * Java, the Duke mascot, and all variants of Sun's Java "steaming coffee
 * cup" logo are trademarks of Sun Microsystems. Sun's, and James Gosling's,
 * pioneering role in inventing and promulgating (and standardizing) the Java 
 * language and environment is gratefully acknowledged.
 * 
 * The pioneering role of Dennis Ritchie and Bjarne Stroustrup, of AT&T, for
 * inventing predecessor languages C and C++ is also gratefully acknowledged.
 */

import java.awt.AWTEvent;
import java.awt.Component;
import java.awt.Dimension;
import java.awt.FlowLayout;
import java.awt.Frame;
import java.awt.MenuItem;
import java.awt.PopupMenu;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.MouseEvent;

/**
 * Provide a pop-up menu using a Frame. On most platforms, changing the mouse
 * "settings" changes how the isPopupTrigger() method behaves instantly - which
 * is as it should be!
 */
public class PopupDemo extends Frame {
  /** "main" method - for testing. */
  public static void main(String[] av) {
    new PopupDemo("Hello").setVisible(true);
  }

  /** Construct the main program */
  public PopupDemo(String title) {
    super(title);

    setLayout(new FlowLayout());
    add(new PopupContainer("Hello, and welcome to the world of Java"));
    pack();
    setVisible(true);
  }
}

/*
 * A component to demonstrate use of PopupMenu. The user has to ask for the menu
 * to popup in Java's platform-dependant way (e.g., right mouse click on X
 * Windows, MS-Windows).
 * 
 * Alternately, you could watch for keypress events and provide your own
 * platform-independant keyboard popup menu character such as M for Menu (not
 * CTRL/M; Mac's don't have a CTRL key).
 */

class PopupContainer extends Component {
  PopupMenu m;

  PopupContainer(String s) {
    m = new PopupMenu(s);
    m.add(new MenuItem("Open"));
    m.add(new MenuItem("Close"));
    MenuItem qB;
    m.add(qB = new MenuItem("Exit"));
    class Quitter implements ActionListener {
      public void actionPerformed(ActionEvent e) {
        System.exit(0);
      }
    }
    qB.addActionListener(new Quitter());

    add(m); // add Popup to Component

    enableEvents(AWTEvent.MOUSE_EVENT_MASK);
  }

  public void processMouseEvent(MouseEvent me) {
    System.err.println("MouseEvent: " + me);
    if (me.isPopupTrigger())
      m.show(this, me.getX(), me.getY());
    else
      super.processMouseEvent(me);
  };

  /** Compute our minimum size */
  public Dimension getMinimumSize() {
    return new Dimension(200, 200);
  }

  final int PREF_PAD = 10;

  /** Computer our best size */
  public Dimension getPreferredSize() {
    Dimension d = getMinimumSize();
    return new Dimension(d.width + PREF_PAD, d.height + PREF_PAD);
  }

  /** Computer our maximum allowed size */
  public Dimension getMaximumSize() {
    Dimension d = getMinimumSize();
    return new Dimension(d.width * 2, d.height * 2);
  }
}


           
         
    
    
  








Related examples in the same category

1.Simple MenusSimple Menus
2.Creating popup menus with SwingCreating popup menus with Swing
3.Create a main menu.
4.Creating a menubar
5.Creating a JMenuBar, JMenu, and JMenuItem Component
6.Submenus, checkbox menu items, swapping menus,mnemonics (shortcuts) and action commandsSubmenus, checkbox menu items, swapping menus,mnemonics (shortcuts) and action commands
7.Separating Menu Items in a Menu
8.This example create a menubar and toolbar both populated with ActionThis example create a menubar and toolbar both populated with Action
9.A simple example of JPopupMenuA simple example of JPopupMenu
10.A quick demonstration of checkbox menu itemsA quick demonstration of checkbox menu items
11.Building menus and menu items: Accelerators and mnemonicsBuilding menus and menu items: Accelerators and mnemonics
12.An example of the JPopupMenu in actionAn example of the JPopupMenu in action
13.A simple example of constructing and using menus.A simple example of constructing and using menus.
14.PopupMenu and Mouse EventPopupMenu and Mouse Event
15.Menu YMenu Y
16.Menu XMenu X
17.Action MenuAction Menu
18.Menu Action Screen Dump DemoMenu Action Screen Dump Demo
19.Toggle Menu ItemToggle Menu Item
20.CheckBox Menu SampleCheckBox Menu Sample
21.Menu Demo 4Menu Demo 4
22.Comprehensive Menu DemoComprehensive Menu Demo
23.Menu Sample 3Menu Sample 3
24.How to create customized menuHow to create customized menu
25.Radio menu itemRadio menu item
26.React to menu action and checkbox menuReact to menu action and checkbox menu
27.Menu created from property file
28.Simple Menu and Window interface - not InternationalizedSimple Menu and Window interface - not Internationalized
29.Demonstrate Menus and the MenuBar classDemonstrate Menus and the MenuBar class
30.Demonstrate JMenu shortcuts and accelerators
31.Demonstrate Cascading MenusDemonstrate Cascading Menus
32.Popup Menu DemoPopup Menu Demo
33.Menu DemoMenu Demo
34.Menu Layout DemoMenu Layout Demo
35.Actions MenuBarActions MenuBar
36.UseActions: MenuUseActions: Menu
37.PopupMenu SamplePopupMenu Sample
38.RadioButton Menu SampleRadioButton Menu Sample
39.Menu Look Demo, except the menu items actually doMenu Look Demo, except the menu items actually do
40.Menu Glue DemoMenu Glue Demo
41.Add PopupMenuAdd PopupMenu
42.Listening for Changes to the Currently Selected Menu or Menu Item
43.Menu item that can be selected or deselected
44.Place commands that hide/show various toolbars
45.Getting the Currently Selected Menu or Menu Item
46.Creating a Menu Item That Listens for Changes to Its Selection Status
47.Create a change listener and register with the menu selection manager
48.Menu Selection Manager DemoMenu Selection Manager Demo
49.Color Menu
50.MenuBar, menu item, action, icon acceleratorMenuBar, menu item, action, icon accelerator