001 /*
002 * Copyright 1998-2006 Sun Microsystems, Inc. All Rights Reserved.
003 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
004 *
005 * This code is free software; you can redistribute it and/or modify it
006 * under the terms of the GNU General Public License version 2 only, as
007 * published by the Free Software Foundation. Sun designates this
008 * particular file as subject to the "Classpath" exception as provided
009 * by Sun in the LICENSE file that accompanied this code.
010 *
011 * This code is distributed in the hope that it will be useful, but WITHOUT
012 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
013 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
014 * version 2 for more details (a copy is included in the LICENSE file that
015 * accompanied this code).
016 *
017 * You should have received a copy of the GNU General Public License version
018 * 2 along with this work; if not, write to the Free Software Foundation,
019 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
020 *
021 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
022 * CA 95054 USA or visit www.sun.com if you need additional information or
023 * have any questions.
024 */
025 package javax.swing.text.html;
026
027 import java.io.Serializable;
028 import javax.swing.text.*;
029
030 /**
031 * Value for the ListModel used to represent
032 * <option> elements. This is the object
033 * installed as items of the DefaultComboBoxModel
034 * used to represent the <select> element.
035 * <p>
036 * <strong>Warning:</strong>
037 * Serialized objects of this class will not be compatible with
038 * future Swing releases. The current serialization support is
039 * appropriate for short term storage or RMI between applications running
040 * the same version of Swing. As of 1.4, support for long term storage
041 * of all JavaBeans<sup><font size="-2">TM</font></sup>
042 * has been added to the <code>java.beans</code> package.
043 * Please see {@link java.beans.XMLEncoder}.
044 *
045 * @author Timothy Prinzing
046 * @version 1.18 05/05/07
047 */
048 public class Option implements Serializable {
049
050 /**
051 * Creates a new Option object.
052 *
053 * @param attr the attributes associated with the
054 * option element. The attributes are copied to
055 * ensure they won't change.
056 */
057 public Option(AttributeSet attr) {
058 this .attr = attr.copyAttributes();
059 selected = (attr.getAttribute(HTML.Attribute.SELECTED) != null);
060 }
061
062 /**
063 * Sets the label to be used for the option.
064 */
065 public void setLabel(String label) {
066 this .label = label;
067 }
068
069 /**
070 * Fetch the label associated with the option.
071 */
072 public String getLabel() {
073 return label;
074 }
075
076 /**
077 * Fetch the attributes associated with this option.
078 */
079 public AttributeSet getAttributes() {
080 return attr;
081 }
082
083 /**
084 * String representation is the label.
085 */
086 public String toString() {
087 return label;
088 }
089
090 /**
091 * Sets the selected state.
092 */
093 protected void setSelection(boolean state) {
094 selected = state;
095 }
096
097 /**
098 * Fetches the selection state associated with this option.
099 */
100 public boolean isSelected() {
101 return selected;
102 }
103
104 /**
105 * Convenience method to return the string associated
106 * with the <code>value</code> attribute. If the
107 * value has not been specified, the label will be
108 * returned.
109 */
110 public String getValue() {
111 String value = (String) attr.getAttribute(HTML.Attribute.VALUE);
112 if (value == null) {
113 value = label;
114 }
115 return value;
116 }
117
118 private boolean selected;
119 private String label;
120 private AttributeSet attr;
121 }
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