001 /*
002 Licensed to the Apache Software Foundation (ASF) under one
003 or more contributor license agreements. See the NOTICE file
004 distributed with this work for additional information
005 regarding copyright ownership. The ASF licenses this file
006 to you under the Apache License, Version 2.0 (the
007 "License"); you may not use this file except in compliance
008 with the License. You may obtain a copy of the License at
009
010 http://www.apache.org/licenses/LICENSE-2.0
011
012 Unless required by applicable law or agreed to in writing,
013 software distributed under the License is distributed on an
014 "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
015 KIND, either express or implied. See the License for the
016 specific language governing permissions and limitations
017 under the License.
018 */
019 package org.apache.wiki.tags;
020
021 import java.io.IOException;
022 import javax.servlet.jsp.JspWriter;
023
024 import org.apache.wiki.WikiContext;
025 import org.apache.wiki.WikiPage;
026 import org.apache.wiki.attachment.Attachment;
027
028 /**
029 * Writes a link to a Wiki page. Body of the link becomes the actual text.
030 * The link is written regardless to whether the page exists or not.
031 *
032 * <P><B>Attributes</B></P>
033 * <UL>
034 * <LI>page - Page name to refer to. Default is the current page.
035 * <LI>format - either "anchor" or "url" to output either an <A>... or just the HREF part of one.
036 * <LI>template - Which template should we link to.
037 * <LI>title - Is used in page actions to display hover text (tooltip)
038 * <LI>accesskey - Set an accesskey (ALT+[Char])
039 * </UL>
040 *
041 * @since 2.0
042 */
043 public class LinkToTag
044 extends WikiLinkTag
045 {
046 private static final long serialVersionUID = 0L;
047
048 private String m_version = null;
049 public String m_title = "";
050 public String m_accesskey = "";
051
052 public void initTag()
053 {
054 super.initTag();
055 m_version = null;
056 }
057
058 public String getVersion()
059 {
060 return m_version;
061 }
062
063 public void setVersion( String arg )
064 {
065 m_version = arg;
066 }
067
068 public void setTitle( String title )
069 {
070 m_title = title;
071 }
072
073 public void setAccesskey( String access )
074 {
075 m_accesskey = access;
076 }
077
078
079 public int doWikiStartTag()
080 throws IOException
081 {
082 String pageName = m_pageName;
083 boolean isattachment = false;
084
085 if( m_pageName == null )
086 {
087 WikiPage p = m_wikiContext.getPage();
088
089 if( p != null )
090 {
091 pageName = p.getName();
092
093 isattachment = p instanceof Attachment;
094 }
095 else
096 {
097 return SKIP_BODY;
098 }
099 }
100
101 JspWriter out = pageContext.getOut();
102 String url;
103 String linkclass;
104
105 if( isattachment )
106 {
107 url = m_wikiContext.getURL(WikiContext.ATTACH,pageName,
108 (getVersion() != null) ? "version="+getVersion() : null );
109 linkclass = "attachment";
110 }
111 else
112 {
113 StringBuffer params = new StringBuffer();
114 if( getVersion() != null ) params.append( "version="+getVersion() );
115 if( getTemplate() != null ) params.append( (params.length()>0?"&":"") + "skin="+getTemplate() );
116
117 url = m_wikiContext.getURL( WikiContext.VIEW, pageName,
118 params.toString() );
119 linkclass = "wikipage";
120 }
121
122 switch( m_format )
123 {
124 case ANCHOR:
125 out.print("<a class=\""+linkclass+"\" href=\""+url+"\" accesskey=\""
126 + m_accesskey + "\" title=\"" + m_title + "\">");
127 break;
128 case URL:
129 out.print( url );
130 break;
131 }
132
133 return EVAL_BODY_INCLUDE;
134 }
135
136 }