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 }