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Diffstat (limited to 'libjava/java/awt/CheckboxGroup.java')
| -rw-r--r-- | libjava/java/awt/CheckboxGroup.java | 210 |
1 files changed, 153 insertions, 57 deletions
diff --git a/libjava/java/awt/CheckboxGroup.java b/libjava/java/awt/CheckboxGroup.java index d098a42..bc6ef44 100644 --- a/libjava/java/awt/CheckboxGroup.java +++ b/libjava/java/awt/CheckboxGroup.java @@ -1,66 +1,162 @@ -/* Copyright (C) 2000 Free Software Foundation +/* CheckboxGroup.java -- A grouping class for checkboxes. + Copyright (C) 1999, 2000, 2002 Free Software Foundation, Inc. - This file is part of libgcj. +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., 59 Temple Place, Suite 330, Boston, MA +02111-1307 USA. + +As a special exception, if you link this library with other files to +produce an executable, this library does not by itself cause the +resulting executable to be covered by the GNU General Public License. +This exception does not however invalidate any other reasons why the +executable file might be covered by the GNU General Public License. */ -This software is copyrighted work licensed under the terms of the -Libgcj License. Please consult the file "LIBGCJ_LICENSE" for -details. */ package java.awt; -import java.io.Serializable; +/** + * 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() +{ +} + +/*************************************************************************/ -/** This class is used to groups checkbox components. - * @author Tom Tromey <tromey@redhat.com> - * @date December 25, 2000 +/* + * Instance Methods */ -public class CheckboxGroup implements Serializable + +/** + * 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(selectedCheckbox); +} + +/*************************************************************************/ + +/** + * 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) { - // Current set checkbox. - Checkbox selectedCheckbox; - - /** Create a new instance of CheckboxGroup. */ - public CheckboxGroup () - { - } - - /** Returns the currently selected checkbox in the group. - * @deprecated - */ - public Checkbox getCurrent () - { - return getSelectedCheckbox (); - } - - /** Returns the currently selected checkbox in the group. */ - public Checkbox getSelectedCheckbox () - { - return selectedCheckbox; - } - - /** Set the selected checkbox. - * @deprecated - */ - public synchronized void setCurrent (Checkbox checkbox) - { - setSelectedCheckbox (checkbox); - } - - /** Set the selected checkbox. */ - public synchronized void setSelectedCheckbox (Checkbox checkbox) - { - if (checkbox != null && checkbox.group != this) - return; - - selectedCheckbox.setState (false); - selectedCheckbox = checkbox; - if (checkbox != null) - checkbox.setState (true); - } - - /** Return String representation of this class and current Checkbox. */ - public String toString () - { - return "[CheckboxGroup: " + selectedCheckbox + "]"; - } + if (this.selectedCheckbox != null) + { + if (this.selectedCheckbox.getCheckboxGroup() != this) + return; + + this.selectedCheckbox.setState(false); + } + + this.selectedCheckbox = selectedCheckbox; + if (selectedCheckbox != null) + selectedCheckbox.setState(true); } + +/*************************************************************************/ + +/** + * 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) +{ + setSelectedCheckbox(selectedCheckbox); +} + +/*************************************************************************/ + +/** + * 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 + |