1 /*
2 * Copyright (c) 1997, 2000, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation. Oracle designates this
8 * particular file as subject to the "Classpath" exception as provided
9 * by Oracle in the LICENSE file that accompanied this code.
10 *
11 * This code is distributed in the hope that it will be useful, but WITHOUT
12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
14 * version 2 for more details (a copy is included in the LICENSE file that
15 * accompanied this code).
16 *
17 * You should have received a copy of the GNU General Public License version
18 * 2 along with this work; if not, write to the Free Software Foundation,
19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
20 *
21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
22 * or visit www.oracle.com if you need additional information or have any
23 * questions.
24 */
25 package javax.swing.text;
26
27 import java.awt.Component;
28 import javax.swing.event.ChangeListener;
29 import javax.swing.event.ChangeEvent;
30
31 import java.util.Enumeration;
32 import java.util.Hashtable;
33
34
35
36 /**
37 * A collection of attributes to associate with an element in a document.
38 * Since these are typically used to associate character and paragraph
39 * styles with the element, operations for this are provided. Other
40 * customized attributes that get associated with the element will
41 * effectively be name-value pairs that live in a hierarchy and if a name
42 * (key) is not found locally, the request is forwarded to the parent.
43 * Commonly used attributes are separated out to facilitate alternative
44 * implementations that are more efficient.
45 *
46 * @author Timothy Prinzing
47 */
48 public interface Style extends MutableAttributeSet {
49
50 /**
51 * Fetches the name of the style. A style is not required to be named,
52 * so <code>null</code> is returned if there is no name
53 * associated with the style.
54 *
55 * @return the name
56 */
57 public String getName();
58
59 /**
60 * Adds a listener to track whenever an attribute
61 * has been changed.
62 *
63 * @param l the change listener
64 */
65 public void addChangeListener(ChangeListener l);
66
67 /**
68 * Removes a listener that was tracking attribute changes.
69 *
70 * @param l the change listener
71 */
72 public void removeChangeListener(ChangeListener l);
73
74
75 }
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