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The source code// $Id: PopupButton.java,v 1.5 2004/08/20 15:59:59 mvw Exp $ // Copyright (c) 2003-2004 The Regents of the University of California. All // Rights Reserved. Permission to use, copy, modify, and distribute this // software and its documentation without fee, and without a written // agreement is hereby granted, provided that the above copyright notice // and this paragraph appear in all copies. This software program and // documentation are copyrighted by The Regents of the University of // California. The software program and documentation are supplied "AS // IS", without any accompanying services from The Regents. The Regents // does not warrant that the operation of the program will be // uninterrupted or error-free. The end-user understands that the program // was developed for research purposes and is advised not to rely // exclusively on the program for any reason. IN NO EVENT SHALL THE // UNIVERSITY OF CALIFORNIA BE LIABLE TO ANY PARTY FOR DIRECT, INDIRECT, // SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES, INCLUDING LOST PROFITS, // ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN IF // THE UNIVERSITY OF CALIFORNIA HAS BEEN ADVISED OF THE POSSIBILITY OF // SUCH DAMAGE. THE UNIVERSITY OF CALIFORNIA SPECIFICALLY DISCLAIMS ANY // WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF // MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE // PROVIDED HEREUNDER IS ON AN "AS IS" BASIS, AND THE UNIVERSITY OF // CALIFORNIA HAS NO OBLIGATIONS TO PROVIDE MAINTENANCE, SUPPORT, // UPDATES, ENHANCEMENTS, OR MODIFICATIONS. package org.argouml.swingext; import java.awt.Component; import java.awt.Insets; import java.awt.event.ActionEvent; import javax.swing.AbstractAction; import javax.swing.Icon; import javax.swing.ImageIcon; import javax.swing.JPopupMenu; import org.tigris.toolbar.toolbutton.ModalButton; /** * A button that displays a popup when pressed. The popup can contain * any Component. * * @author Jeremy Jones */ public class PopupButton extends ModalButton { /** * The popup component. */ private Component component = null; /** * Constructs a new PopupButton with no popup assigned. */ public PopupButton() { super(null); setAction(new AbstractAction() { public void actionPerformed(ActionEvent e) { showPopup(); } }); String javaVersion = System.getProperties().getProperty( "java.specification.version"); if (javaVersion.equals("1.3")) { setBorderPainted(false); // This is needed specifically for JDK1.3 on Windows & Motif setMargin(new Insets(0, 0, 0, 0)); } } /** * Constructs a new PopupButton with the specified popup component * and button icon * * @param c the component to popup * @param icon the button icon */ public PopupButton(Component c, Icon icon) { this(); component = c; setIcon(icon); } /** * Returns the component that is displayed within the popup. * * @return the popup component */ public Component getPopupComponent() { return component; } /** * Sets the component to be displayed within the popup. * * @param c the new popup component */ public void setPopupComponent(Component c) { component = c; } /** * Sets the button icon. Overridden to automatically add a drop down icon * to the right of the icon image. * * @param icon the new button icon */ public final void setIcon(Icon icon) { if (icon instanceof ImageIcon) { super.setIcon(new DropDownIcon((ImageIcon) icon)); } else { super.setIcon(icon); } } /** * Called when the user clicks the button. This method will show the * popup component in a popup menu. Subclasses can override this * method to perform actions before the popup is shown. */ protected void showPopup() { if (component != null) { JPopupMenu popupMenu = new JPopupMenu(); popupMenu.add(component); popupMenu.pack(); popupMenu.show(this, 0, getHeight()); } } } |
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