Tue, 14 May 2013 10:14:54 -0700
8012175: Convert TagletOutputImpl to use ContentBuilder instead of StringBuilder
Reviewed-by: darcy
1 /*
2 * Copyright (c) 2003, 2013, 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 */
26 package com.sun.tools.doclets.internal.toolkit.taglets;
28 import com.sun.javadoc.*;
30 /**
31 * The interface for a custom tag used by Doclets. A custom
32 * tag must implement this interface. To be loaded and used by
33 * doclets at run-time, the taglet must have a static method called
34 * <code>register</code> that accepts a {@link java.util.Map} as an
35 * argument with the following signature:
36 * <pre>
37 * public void register(Map map)
38 * </pre>
39 * This method should add an instance of the custom taglet to the map
40 * with the name of the taglet as the key. If overriding a taglet,
41 * to avoid a name conflict, the overridden taglet must be deleted from
42 * the map before an instance of the new taglet is added to the map.
43 * <p>
44 * It is recommended that the taglet throw an exception when it fails
45 * to register itself. The exception that it throws is up to the user.
46 * <p>
47 * Here are two sample taglets: <br>
48 * <ul>
49 * <li><a href="{@docRoot}/ToDoTaglet.java">ToDoTaglet.java</a>
50 * - Standalone taglet</li>
51 * <li><a href="{@docRoot}/UnderlineTaglet.java">UnderlineTaglet.java</a>
52 * - Inline taglet</li>
53 * </ul>
54 * <p>
55 * For more information on how to create your own Taglets, please see the
56 * <a href="{@docRoot}/overview.html">Taglet Overview</a>.
57 *
58 * @since 1.4
59 * @author Jamie Ho
60 */
62 public interface Taglet {
64 /**
65 * Return true if this <code>Taglet</code>
66 * is used in field documentation.
67 * @return true if this <code>Taglet</code>
68 * is used in field documentation and false
69 * otherwise.
70 */
71 public abstract boolean inField();
73 /**
74 * Return true if this <code>Taglet</code>
75 * is used in constructor documentation.
76 * @return true if this <code>Taglet</code>
77 * is used in constructor documentation and false
78 * otherwise.
79 */
80 public abstract boolean inConstructor();
82 /**
83 * Return true if this <code>Taglet</code>
84 * is used in method documentation.
85 * @return true if this <code>Taglet</code>
86 * is used in method documentation and false
87 * otherwise.
88 */
89 public abstract boolean inMethod();
91 /**
92 * Return true if this <code>Taglet</code>
93 * is used in overview documentation.
94 * @return true if this <code>Taglet</code>
95 * is used in method documentation and false
96 * otherwise.
97 */
98 public abstract boolean inOverview();
100 /**
101 * Return true if this <code>Taglet</code>
102 * is used in package documentation.
103 * @return true if this <code>Taglet</code>
104 * is used in package documentation and false
105 * otherwise.
106 */
107 public abstract boolean inPackage();
109 /**
110 * Return true if this <code>Taglet</code>
111 * is used in type documentation (classes or
112 * interfaces).
113 * @return true if this <code>Taglet</code>
114 * is used in type documentation and false
115 * otherwise.
116 */
117 public abstract boolean inType();
119 /**
120 * Return true if this <code>Taglet</code>
121 * is an inline tag. Return false otherwise.
122 * @return true if this <code>Taglet</code>
123 * is an inline tag and false otherwise.
124 */
125 public abstract boolean isInlineTag();
127 /**
128 * Return the name of this custom tag.
129 * @return the name of this custom tag.
130 */
131 public abstract String getName();
133 /**
134 * Given the <code>Tag</code> representation of this custom
135 * tag, return its TagletOutput representation, which is output
136 * to the generated page.
137 * @param tag the <code>Tag</code> representation of this custom tag.
138 * @param writer a {@link TagletWriter} Taglet writer.
139 * @throws IllegalArgumentException thrown when the method is not supported by the taglet.
140 * @return the TagletOutput representation of this <code>Tag</code>.
141 */
142 public abstract TagletOutput getTagletOutput(Tag tag, TagletWriter writer) throws IllegalArgumentException;
144 /**
145 * Given a <code>Doc</code> object, check if it holds any tags of
146 * this type. If it does, return the string representing the output.
147 * If it does not, return null.
148 * @param holder a {@link Doc} object holding the custom tag.
149 * @param writer a {@link TagletWriter} Taglet writer.
150 * @throws IllegalArgumentException thrown when the method is not supported by the taglet.
151 * @return the TagletOutput representation of this <code>Tag</code>.
152 */
153 public abstract TagletOutput getTagletOutput(Doc holder, TagletWriter writer) throws IllegalArgumentException;
155 @Override
156 public abstract String toString();
157 }