PopupMenu.java 3.8 KB

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  1. /* PopupMenu.java -- An AWT popup menu
  2. Copyright (C) 1999, 2000, 2001, 2002 Free Software Foundation, Inc.
  3. This file is part of GNU Classpath.
  4. GNU Classpath is free software; you can redistribute it and/or modify
  5. it under the terms of the GNU General Public License as published by
  6. the Free Software Foundation; either version 2, or (at your option)
  7. any later version.
  8. GNU Classpath is distributed in the hope that it will be useful, but
  9. WITHOUT ANY WARRANTY; without even the implied warranty of
  10. MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  11. General Public License for more details.
  12. You should have received a copy of the GNU General Public License
  13. along with GNU Classpath; see the file COPYING. If not, write to the
  14. Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
  15. 02111-1307 USA.
  16. Linking this library statically or dynamically with other modules is
  17. making a combined work based on this library. Thus, the terms and
  18. conditions of the GNU General Public License cover the whole
  19. combination.
  20. As a special exception, the copyright holders of this library give you
  21. permission to link this library with independent modules to produce an
  22. executable, regardless of the license terms of these independent
  23. modules, and to copy and distribute the resulting executable under
  24. terms of your choice, provided that you also meet, for each linked
  25. independent module, the terms and conditions of the license of that
  26. module. An independent module is a module which is not derived from
  27. or based on this library. If you modify this library, you may extend
  28. this exception to your version of the library, but you are not
  29. obligated to do so. If you do not wish to do so, delete this
  30. exception statement from your version. */
  31. package java.awt;
  32. import java.awt.peer.PopupMenuPeer;
  33. import java.awt.peer.MenuPeer;
  34. import java.awt.peer.MenuItemPeer;
  35. import java.awt.peer.MenuComponentPeer;
  36. /**
  37. * This class implement an AWT popup menu widget
  38. *
  39. * @author Aaron M. Renn (arenn@urbanophile.com)
  40. */
  41. public class PopupMenu extends Menu implements java.io.Serializable
  42. {
  43. /*
  44. * Static Variables
  45. */
  46. // Serialization Constant
  47. private static final long serialVersionUID = -4620452533522760060L;
  48. /*************************************************************************/
  49. /*
  50. * Constructors
  51. */
  52. /**
  53. * Initializes a new instance of <code>PopupMenu</code>.
  54. *
  55. * @exception HeadlessException If GraphicsEnvironment.isHeadless()
  56. * returns true.
  57. */
  58. public
  59. PopupMenu()
  60. {
  61. }
  62. /*************************************************************************/
  63. /**
  64. * Initializes a new instance of <code>PopupMenu</code> with the specified
  65. * label.
  66. *
  67. * @param label The label for this popup menu.
  68. *
  69. * @exception HeadlessException If GraphicsEnvironment.isHeadless()
  70. * returns true.
  71. */
  72. public
  73. PopupMenu(String label)
  74. {
  75. super(label);
  76. if (GraphicsEnvironment.isHeadless())
  77. throw new HeadlessException ();
  78. }
  79. /*************************************************************************/
  80. /*
  81. * Instance Methods
  82. */
  83. /**
  84. * Creates this object's native peer.
  85. */
  86. public void
  87. addNotify()
  88. {
  89. if (peer != null)
  90. peer = getToolkit ().createPopupMenu (this);
  91. super.addNotify ();
  92. }
  93. /*************************************************************************/
  94. /**
  95. * Displays this popup menu at the specified coordinates relative to
  96. * the specified component.
  97. *
  98. * @param component The component to which the display coordinates are relative.
  99. * @param x The X coordinate of the menu.
  100. * @param y The Y coordinate of the menu.
  101. */
  102. public void
  103. show(Component component, int x, int y)
  104. {
  105. PopupMenuPeer pmp = (PopupMenuPeer)getPeer();
  106. if (pmp != null)
  107. {
  108. /* XXX
  109. Event e = new Event (component, Event.ACTION_EVENT, component);
  110. e.x = x;
  111. e.y = y;*/
  112. pmp.show (component, x, y);
  113. }
  114. }
  115. } // class PopupMenu