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 org.apache.wiki.api.core.ContextEnum;
022
023import javax.servlet.jsp.JspWriter;
024import java.io.IOException;
025
026
027/**
028 * Writes a link to the upload page.  Body of the link becomes the actual text.
029 * The link is written regardless to whether the page exists or not.
030 * <P><B>Attributes</B></P>
031 * <UL>
032 * <LI>page - Page name to refer to.  Default is the current page.
033 * <LI>format - either "anchor" or "url" to output either an <A>... or just the HREF part of one.
034 * </UL>
035 *
036 * @since 2.0
037 */
038public class UploadLinkTag extends WikiLinkTag {
039
040    private static final long serialVersionUID = 0L;
041
042    @Override
043    public final int doWikiStartTag() throws IOException {
044        String pageName = m_pageName;
045        if( m_pageName == null ) {
046            if( m_wikiContext.getPage() != null ) {
047                pageName = m_wikiContext.getPage().getName();
048            } else {
049                return SKIP_BODY;
050            }
051        }
052
053        final JspWriter out = pageContext.getOut();
054        final String url = m_wikiContext.getURL( ContextEnum.PAGE_UPLOAD.getRequestContext(), pageName );
055        switch( m_format ) {
056        case ANCHOR:
057            out.print( "<a target=\"_new\" class=\"uploadlink\" href=\"" + url + "\">" );
058            break;
059        case URL:
060            out.print( url );
061            break;
062        }
063
064        return EVAL_BODY_INCLUDE;
065    }
066
067}