| /* CheckboxGroup.java -- A grouping class for checkboxes. |
| Copyright (C) 1999, 2000, 2002, 2005 Free Software Foundation, Inc. |
| |
| This file is part of GNU Classpath. |
| |
| GNU Classpath is free software; you can redistribute it and/or modify |
| it under the terms of the GNU General Public License as published by |
| the Free Software Foundation; either version 2, or (at your option) |
| any later version. |
| |
| GNU Classpath is distributed in the hope that it will be useful, but |
| WITHOUT ANY WARRANTY; without even the implied warranty of |
| MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| General Public License for more details. |
| |
| You should have received a copy of the GNU General Public License |
| along with GNU Classpath; see the file COPYING. If not, write to the |
| Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA |
| 02110-1301 USA. |
| |
| Linking this library statically or dynamically with other modules is |
| making a combined work based on this library. Thus, the terms and |
| conditions of the GNU General Public License cover the whole |
| combination. |
| |
| As a special exception, the copyright holders of this library give you |
| permission to link this library with independent modules to produce an |
| executable, regardless of the license terms of these independent |
| modules, and to copy and distribute the resulting executable under |
| terms of your choice, provided that you also meet, for each linked |
| independent module, the terms and conditions of the license of that |
| module. An independent module is a module which is not derived from |
| or based on this library. If you modify this library, you may extend |
| this exception to your version of the library, but you are not |
| obligated to do so. If you do not wish to do so, delete this |
| exception statement from your version. */ |
| |
| |
| package java.awt; |
| |
| /** |
| * This class if for combining checkboxes into groups so that only |
| * one checkbox in the group can be selected at any one time. |
| * |
| * @author Aaron M. Renn (arenn@urbanophile.com) |
| * @author Tom Tromey (tromey@redhat.com) |
| */ |
| public class CheckboxGroup implements java.io.Serializable |
| { |
| |
| /* |
| * Static Variables |
| */ |
| |
| // Serialization constant |
| private static final long serialVersionUID = 3729780091441768983L; |
| |
| /*************************************************************************/ |
| |
| /* |
| * Instance Variables |
| */ |
| |
| /** |
| * @serial The currently selected checkbox. |
| */ |
| private Checkbox selectedCheckbox; |
| |
| /*************************************************************************/ |
| |
| /* |
| * Constructors |
| */ |
| |
| /** |
| * Initializes a new instance of <code>CheckboxGroup</code>. |
| */ |
| public |
| CheckboxGroup() |
| { |
| } |
| |
| /*************************************************************************/ |
| |
| /* |
| * Instance Methods |
| */ |
| |
| /** |
| * Returns the currently selected checkbox, or <code>null</code> if none |
| * of the checkboxes in this group are selected. |
| * |
| * @return The selected checkbox. |
| */ |
| public Checkbox |
| getSelectedCheckbox() |
| { |
| return getCurrent (); |
| } |
| |
| /*************************************************************************/ |
| |
| /** |
| * Returns the currently selected checkbox, or <code>null</code> if none |
| * of the checkboxes in this group are selected. |
| * |
| * @return The selected checkbox. |
| * |
| * @deprecated This method is deprecated in favor of |
| * <code>getSelectedCheckbox()</code>. |
| */ |
| public Checkbox |
| getCurrent() |
| { |
| return(selectedCheckbox); |
| } |
| |
| /*************************************************************************/ |
| |
| /** |
| * This method sets the specified checkbox to be the selected on in this |
| * group, and unsets all others. |
| * |
| * @param selectedCheckbox The new selected checkbox. |
| */ |
| public void |
| setSelectedCheckbox(Checkbox selectedCheckbox) |
| { |
| setCurrent (selectedCheckbox); |
| } |
| |
| /*************************************************************************/ |
| |
| /** |
| * This method sets the specified checkbox to be the selected on in this |
| * group, and unsets all others. |
| * |
| * @param selectedCheckbox The new selected checkbox. |
| * |
| * @deprecated This method is deprecated in favor of |
| * <code>setSelectedCheckbox()</code>. |
| */ |
| public void |
| setCurrent(Checkbox selectedCheckbox) |
| { |
| if (this.selectedCheckbox != null) |
| { |
| if (this.selectedCheckbox.getCheckboxGroup() != this) |
| return; |
| |
| this.selectedCheckbox.setState(false); |
| } |
| |
| this.selectedCheckbox = selectedCheckbox; |
| if (selectedCheckbox != null) |
| selectedCheckbox.setState(true); |
| } |
| |
| /*************************************************************************/ |
| |
| /** |
| * Returns a string representation of this checkbox group. |
| * |
| * @return A string representation of this checkbox group. |
| */ |
| public String |
| toString() |
| { |
| return(getClass().getName() + "[selectedCheckbox=" + selectedCheckbox + "]"); |
| } |
| |
| } // class CheckboxGroup |
| |