AttributeTree.java revision 3193:3b3bea483542 
1/*
2 * Copyright (c) 2011, 2014, 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
26package com.sun.source.doctree;
27
28import java.util.List;
29import javax.lang.model.element.Name;
30
31/**
32 * A tree node for an attribute in an HTML element.
33 *
34 * @since 1.8
35 */
36public interface AttributeTree extends DocTree {
37    /**
38     * The kind of an attribute value.
39     */
40    enum ValueKind {
41        /** The attribute value is empty. */
42        EMPTY,
43        /** The attribute value is not enclosed in quotes. */
44        UNQUOTED,
45        /** The attribute value is enclosed in single quotation marks. */
46        SINGLE,
47        /** The attribute value is enclosed in double quotation marks. */
48        DOUBLE
49    }
50
51    /**
52     * Returns the name of the attribute.
53     * @return the name of the attribute
54     */
55    Name getName();
56
57    /**
58     * Returns the kind of the attribute.
59     * @return the kind of the attribute.
60     */
61    ValueKind getValueKind();
62
63    /**
64     * Returns the value of the attribute, or {@code null} if the kind is EMPTY.
65     * @return the value of the attribute.
66     */
67    List<? extends DocTree> getValue();
68}
69