1 /*
2 * $Source$
3 * $Revision$
4 *
5 * Copyright (C) 2000 William Chesters
6 *
7 * Part of Melati (http://melati.org), a framework for the rapid
8 * development of clean, maintainable web applications.
9 *
10 * Melati is free software; Permission is granted to copy, distribute
11 * and/or modify this software under the terms either:
12 *
13 * a) the GNU General Public License as published by the Free Software
14 * Foundation; either version 2 of the License, or (at your option)
15 * any later version,
16 *
17 * or
18 *
19 * b) any version of the Melati Software License, as published
20 * at http://melati.org
21 *
22 * You should have received a copy of the GNU General Public License and
23 * the Melati Software License along with this program;
24 * if not, write to the Free Software Foundation, Inc.,
25 * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA to obtain the
26 * GNU General Public License and visit http://melati.org to obtain the
27 * Melati Software License.
28 *
29 * Feel free to contact the Developers of Melati (http://melati.org),
30 * if you would like to work out a different arrangement than the options
31 * outlined here. It is our intention to allow Melati to be used by as
32 * wide an audience as possible.
33 *
34 * This program is distributed in the hope that it will be useful,
35 * but WITHOUT ANY WARRANTY; without even the implied warranty of
36 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
37 * GNU General Public License for more details.
38 *
39 * Contact details for copyright holder:
40 *
41 * William Chesters <williamc At paneris.org>
42 * http://paneris.org/~williamc
43 * Obrechtstraat 114, 2517VX Den Haag, The Netherlands
44 */
45
46 package org.melati.template;
47
48 import java.io.IOException;
49
50 import org.melati.poem.AccessPoemException;
51 import org.melati.util.MelatiWriter;
52 import org.melati.util.HTMLUtils;
53
54 /**
55 * An HTML based markup language suitable for markup within an
56 * attribute tag.
57 *
58 * The significant difference is that newlines are not translated into break
59 * tags.
60 */
61 public class HTMLAttributeMarkupLanguage extends HTMLMarkupLanguage
62 implements MarkupLanguage, AttributeMarkupLanguage {
63
64 /**
65 * Constructor given an HTMLMarkupLanguage.
66 * @param html the HTMLMarkupLanguage the attribute language is relevant to
67 */
68 public HTMLAttributeMarkupLanguage(HTMLMarkupLanguage html) {
69 super("html_attr", html);
70 }
71
72 /**
73 * {@inheritDoc}
74 * @see org.melati.template.AttributeMarkupLanguage#rendered(
75 * org.melati.poem.AccessPoemException)
76 */
77 public String rendered(AccessPoemException e) {
78 try {
79 melati.getWriter().write("[Access denied to ");
80 render(e.token);
81 melati.getWriter().write("]");
82 }
83 catch (Exception g) {
84 try {
85 melati.getWriter().write("[UNRENDERABLE EXCEPTION!]");
86 } catch (IOException ioe) {
87 throw new TemplateIOException(ioe);
88 }
89 }
90
91 return "";
92 }
93
94 /**
95 * Do entity substitution.
96 *
97 * @see org.melati.template.AttributeMarkupLanguage#render(java.lang.String,
98 * org.melati.util.MelatiWriter)
99 */
100 public void render(String s, MelatiWriter writer) {
101 try {
102 writer.write(HTMLUtils.entitied(s, false, melati.getEncoding(), false));
103 } catch (IOException e) {
104 throw new TemplateIOException("Problem writing " + s, e);
105 }
106 }
107
108 /**
109 * Attribute markup languages do not have templets, so don't look for one.
110 * {@inheritDoc}
111 * @see org.melati.template.AbstractMarkupLanguage#render(java.lang.Object, org.melati.util.MelatiWriter)
112 */
113 protected void render(Object o, MelatiWriter writer) {
114 render(o.toString(), writer);
115 }
116 }