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Java > Open Source Codes > javax > swing > text > Style


1 /*
2  * @(#)Style.java 1.21 03/12/19
3  *
4  * Copyright 2004 Sun Microsystems, Inc. All rights reserved.
5  * SUN PROPRIETARY/CONFIDENTIAL. Use is subject to license terms.
6  */
7 package javax.swing.text;
8
9 import java.awt.Component JavaDoc;
10 import javax.swing.event.ChangeListener JavaDoc;
11 import javax.swing.event.ChangeEvent JavaDoc;
12
13 import java.util.Enumeration JavaDoc;
14 import java.util.Hashtable JavaDoc;
15
16
17
18 /**
19  * A collection of attributes to associate with an element in a document.
20  * Since these are typically used to associate character and paragraph
21  * styles with the element, operations for this are provided. Other
22  * customized attributes that get associated with the element will
23  * effectively be name-value pairs that live in a hierarchy and if a name
24  * (key) is not found locally, the request is forwarded to the parent.
25  * Commonly used attributes are separated out to facilitate alternative
26  * implementations that are more efficient.
27  *
28  * @author Timothy Prinzing
29  * @version 1.21 12/19/03
30  */
31 public interface Style extends MutableAttributeSet JavaDoc {
32
33     /**
34      * Fetches the name of the style. A style is not required to be named,
35      * so <code>null</code> is returned if there is no name
36      * associated with the style.
37      *
38      * @return the name
39      */
40     public String JavaDoc getName();
41
42     /**
43      * Adds a listener to track whenever an attribute
44      * has been changed.
45      *
46      * @param l the change listener
47      */
48     public void addChangeListener(ChangeListener JavaDoc l);
49
50     /**
51      * Removes a listener that was tracking attribute changes.
52      *
53      * @param l the change listener
54      */
55     public void removeChangeListener(ChangeListener JavaDoc l);
56
57
58 }
59
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