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 */ 019package org.apache.wiki.tags; 020 021import java.io.IOException; 022 023import javax.servlet.jsp.JspWriter; 024 025import org.apache.wiki.WikiContext; 026import org.apache.wiki.WikiPage; 027import org.apache.wiki.attachment.Attachment; 028 029/** 030 * Writes a link to a Wiki page. Body of the link becomes the actual text. 031 * The link is written regardless to whether the page exists or not. 032 * 033 * <P><B>Attributes</B></P> 034 * <UL> 035 * <LI>page - Page name to refer to. Default is the current page. 036 * <LI>format - either "anchor" or "url" to output either an <A>... or just the HREF part of one. 037 * <LI>template - Which template should we link to. 038 * <LI>title - Is used in page actions to display hover text (tooltip) 039 * <LI>accesskey - Set an accesskey (ALT+[Char]) 040 * </UL> 041 * 042 * @since 2.0 043 */ 044public class LinkToTag 045 extends WikiLinkTag 046{ 047 private static final long serialVersionUID = 0L; 048 049 private String m_version = null; 050 public String m_title = ""; 051 public String m_accesskey = ""; 052 053 public void initTag() 054 { 055 super.initTag(); 056 m_version = null; 057 } 058 059 public String getVersion() 060 { 061 return m_version; 062 } 063 064 public void setVersion( String arg ) 065 { 066 m_version = arg; 067 } 068 069 public void setTitle( String title ) 070 { 071 m_title = title; 072 } 073 074 public void setAccesskey( String access ) 075 { 076 m_accesskey = access; 077 } 078 079 080 public int doWikiStartTag() 081 throws IOException 082 { 083 String pageName = m_pageName; 084 boolean isattachment = false; 085 086 if( m_pageName == null ) 087 { 088 WikiPage p = m_wikiContext.getPage(); 089 090 if( p != null ) 091 { 092 pageName = p.getName(); 093 094 isattachment = p instanceof Attachment; 095 } 096 else 097 { 098 return SKIP_BODY; 099 } 100 } 101 102 JspWriter out = pageContext.getOut(); 103 String url; 104 String linkclass; 105 String forceDownload = ""; 106 107 if( isattachment ) 108 { 109 url = m_wikiContext.getURL(WikiContext.ATTACH, pageName, 110 (getVersion() != null) ? "version="+getVersion() : null ); 111 linkclass = "attachment"; 112 113 if( m_wikiContext.getEngine().getAttachmentManager().forceDownload( pageName ) ) 114 { 115 forceDownload = "download "; 116 } 117 118 } 119 else 120 { 121 StringBuilder params = new StringBuilder(); 122 if( getVersion() != null ) params.append( "version="+getVersion() ); 123 if( getTemplate() != null ) params.append( (params.length()>0?"&":"") + "skin="+getTemplate() ); 124 125 url = m_wikiContext.getURL( WikiContext.VIEW, pageName, 126 params.toString() ); 127 linkclass = "wikipage"; 128 } 129 130 switch( m_format ) 131 { 132 case ANCHOR: 133 out.print("<a class=\""+linkclass+"\" href=\""+url+"\" accesskey=\"" 134 + m_accesskey + "\" title=\"" + m_title 135 + "\" " + forceDownload + ">"); 136 break; 137 case URL: 138 out.print( url ); 139 break; 140 } 141 142 return EVAL_BODY_INCLUDE; 143 } 144 145}