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; 022import javax.servlet.jsp.JspWriter; 023 024import org.apache.wiki.WikiContext; 025import org.apache.wiki.WikiEngine; 026import org.apache.wiki.WikiPage; 027 028/** 029 * Writes an edit link. Body of the link becomes the link text. 030 * <P><B>Attributes</B></P> 031 * <UL> 032 * <LI>page - Page name to refer to. Default is the current page. 033 * <LI>format - Format, either "anchor" or "url". 034 * <LI>version - Version number of the page to refer to. Possible values 035 * are "this", meaning the version of the current page; or a version 036 * number. Default is always to point at the latest version of the page. 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 */ 043public class EditLinkTag 044 extends WikiLinkTag 045{ 046 private static final long serialVersionUID = 0L; 047 048 public 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 void setVersion( String vers ) 059 { 060 m_version = vers; 061 } 062 063 public void setTitle( String title ) 064 { 065 m_title = title; 066 } 067 068 public void setAccesskey( String access ) 069 { 070 m_accesskey = access; 071 } 072 073 public final int doWikiStartTag() 074 throws IOException 075 { 076 WikiEngine engine = m_wikiContext.getEngine(); 077 WikiPage page = null; 078 String versionString = ""; 079 String pageName = null; 080 081 // 082 // Determine the page and the link. 083 // 084 if( m_pageName == null ) 085 { 086 page = m_wikiContext.getPage(); 087 if( page == null ) 088 { 089 // You can't call this on the page itself anyways. 090 return SKIP_BODY; 091 } 092 093 pageName = page.getName(); 094 } 095 else 096 { 097 pageName = m_pageName; 098 } 099 100 // 101 // Determine the latest version, if the version attribute is "this". 102 // 103 if( m_version != null ) 104 { 105 if( "this".equalsIgnoreCase(m_version) ) 106 { 107 if( page == null ) 108 { 109 // No page, so go fetch according to page name. 110 page = engine.getPage( m_pageName ); 111 } 112 113 if( page != null ) 114 { 115 versionString = "version="+page.getVersion(); 116 } 117 } 118 else 119 { 120 versionString = "version="+m_version; 121 } 122 } 123 124 // 125 // Finally, print out the correct link, according to what 126 // user commanded. 127 // 128 JspWriter out = pageContext.getOut(); 129 130 switch( m_format ) 131 { 132 case ANCHOR: 133 out.print("<a href=\""+m_wikiContext.getURL(WikiContext.EDIT,pageName, versionString) 134 +"\" accesskey=\"" + m_accesskey + "\" title=\"" + m_title + "\">"); 135 break; 136 137 case URL: 138 out.print( m_wikiContext.getURL(WikiContext.EDIT,pageName,versionString) ); 139 break; 140 } 141 142 return EVAL_BODY_INCLUDE; 143 } 144}