Source code: com/opencms/flex/jsp/CmsJspTagLink.java
1 /*
2 * File : $Source: /usr/local/cvs/opencms/src/com/opencms/flex/jsp/Attic/CmsJspTagLink.java,v $
3 * Date : $Date: 2003/05/13 13:18:20 $
4 * Version: $Revision: 1.10.2.1 $
5 *
6 * This library is part of OpenCms -
7 * the Open Source Content Mananagement System
8 *
9 * Copyright (C) 2002 - 2003 Alkacon Software (http://www.alkacon.com)
10 *
11 * This library is free software; you can redistribute it and/or
12 * modify it under the terms of the GNU Lesser General Public
13 * License as published by the Free Software Foundation; either
14 * version 2.1 of the License, or (at your option) any later version.
15 *
16 * This library is distributed in the hope that it will be useful,
17 * but WITHOUT ANY WARRANTY; without even the implied warranty of
18 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
19 * Lesser General Public License for more details.
20 *
21 * For further information about Alkacon Software, please see the
22 * company website: http://www.alkacon.com
23 *
24 * For further information about OpenCms, please see the
25 * project website: http://www.opencms.org
26 *
27 * You should have received a copy of the GNU Lesser General Public
28 * License along with this library; if not, write to the Free Software
29 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
30 */
31
32 package com.opencms.flex.jsp;
33
34 import com.opencms.flex.cache.CmsFlexController;
35 import com.opencms.util.LinkSubstitution;
36
37 import javax.servlet.ServletRequest;
38 import javax.servlet.jsp.JspException;
39
40 /**
41 * Implements the <code><cms:link>[filename]</cms:link></code>
42 * tag to add OpenCms managed links to a JSP page, required for link
43 * management and the static
44 * export to work properly.<p>
45 *
46 * @author Alexander Kandzior (a.kandzior@alkacon.com)
47 * @version $Revision: 1.10.2.1 $
48 */
49 public class CmsJspTagLink extends javax.servlet.jsp.tagext.BodyTagSupport {
50
51 /**
52 * @see javax.servlet.jsp.tagext.Tag#doEndTag()
53 * @return EVAL_PAGE
54 */
55 public int doEndTag() throws JspException {
56
57 ServletRequest req = pageContext.getRequest();
58
59 // This will always be true if the page is called through OpenCms
60 if (CmsFlexController.isCmsRequest(req)) {
61 try {
62 // Get link-string from the body and reset body
63 String link = this.getBodyContent().getString();
64 this.getBodyContent().clear();
65 // Calculate the link substitution
66 String newlink = linkTagAction(link, req);
67 // Write the result back to the page
68 this.getBodyContent().print(newlink);
69 this.getBodyContent().writeOut(pageContext.getOut());
70
71 } catch (Exception ex) {
72 System.err.println("Error in Jsp 'link' tag processing: " + ex);
73 System.err.println(com.opencms.util.Utils.getStackTrace(ex));
74 throw new JspException(ex);
75 }
76 }
77 return EVAL_PAGE;
78 }
79
80 /**
81 * Internal action method.<p>
82 *
83 * Calulates a link using the OpenCms link export rules.<p>
84 *
85 * @param link the link that should be calculated, can be relative or absolute
86 * @param req the current request
87 * @return the calculated link
88 *
89 * @see com.opencms.util.LinkSubstitution#getLinkSubstitution(CmsObject, String)
90 */
91 public static String linkTagAction(String link, ServletRequest req) {
92 CmsFlexController controller = (CmsFlexController)req.getAttribute(CmsFlexController.ATTRIBUTE_NAME);
93 if (link.indexOf(':') >= 0) {
94 return LinkSubstitution.getLinkSubstitution(controller.getCmsObject(), link);
95 } else {
96 return LinkSubstitution.getLinkSubstitution(controller.getCmsObject(), controller.getCurrentRequest().toAbsolute(link));
97 }
98 }
99 }