blob: 4539c74d43eeff0a1e46d7f0b0e2d06b1da32b35 [file] [log] [blame]
/*
JSPWiki - a JSP-based WikiWiki clone.
Licensed to the Apache Software Foundation (ASF) under one
or more contributor license agreements. See the NOTICE file
distributed with this work for additional information
regarding copyright ownership. The ASF licenses this file
to you under the Apache License, Version 2.0 (the
"License"); you may not use this file except in compliance
with the License. You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing,
software distributed under the License is distributed on an
"AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
KIND, either express or implied. See the License for the
specific language governing permissions and limitations
under the License.
*/
package com.ecyrd.jspwiki.tags;
import java.io.IOException;
import java.util.Collection;
import javax.servlet.jsp.JspWriter;
import javax.servlet.jsp.PageContext;
import org.apache.jspwiki.api.WikiPage;
import com.ecyrd.jspwiki.log.Logger;
import com.ecyrd.jspwiki.log.LoggerFactory;
import com.ecyrd.jspwiki.WikiEngine;
import com.ecyrd.jspwiki.WikiContext;
import com.ecyrd.jspwiki.providers.ProviderException;
import com.ecyrd.jspwiki.attachment.AttachmentManager;
import com.ecyrd.jspwiki.attachment.Attachment;
/**
* Iterates through the list of attachments one has.
*
* <P><B>Attributes</B></P>
* <UL>
* <LI>page - Page name to refer to. Default is the current page.
* </UL>
*
* @since 2.0
*/
// FIXME: Too much in common with IteratorTag - REFACTOR
public class AttachmentsIteratorTag
extends IteratorTag
{
private static final long serialVersionUID = 0L;
static Logger log = LoggerFactory.getLogger( AttachmentsIteratorTag.class );
/**
* {@inheritDoc}
*/
@Override
public final int doStartTag()
{
m_wikiContext = (WikiContext) pageContext.getAttribute( WikiTagBase.ATTR_CONTEXT,
PageContext.REQUEST_SCOPE );
WikiEngine engine = m_wikiContext.getEngine();
AttachmentManager mgr = engine.getAttachmentManager();
WikiPage page;
page = m_wikiContext.getPage();
if( !mgr.attachmentsEnabled() )
{
return SKIP_BODY;
}
try
{
if( page != null && engine.pageExists(page) )
{
Collection atts = mgr.listAttachments( page );
if( atts == null )
{
log.debug("No attachments to display.");
// There are no attachments included
return SKIP_BODY;
}
m_iterator = atts.iterator();
if( m_iterator.hasNext() )
{
Attachment att = (Attachment) m_iterator.next();
WikiContext context = (WikiContext)m_wikiContext.clone();
context.setPage( att );
pageContext.setAttribute( WikiTagBase.ATTR_CONTEXT,
context,
PageContext.REQUEST_SCOPE );
pageContext.setAttribute( getId(), att );
}
else
{
return SKIP_BODY;
}
}
else
{
return SKIP_BODY;
}
return EVAL_BODY_BUFFERED;
}
catch( ProviderException e )
{
log.error("Provider failed while trying to iterator through history",e);
// FIXME: THrow something.
}
return SKIP_BODY;
}
/**
* {@inheritDoc}
*/
@Override
public final int doAfterBody()
{
if( bodyContent != null )
{
try
{
JspWriter out = getPreviousOut();
out.print(bodyContent.getString());
bodyContent.clearBody();
}
catch( IOException e )
{
log.error("Unable to get inner tag text", e);
// FIXME: throw something?
}
}
if( m_iterator != null && m_iterator.hasNext() )
{
Attachment att = (Attachment) m_iterator.next();
WikiContext context = (WikiContext)m_wikiContext.clone();
context.setPage( att );
pageContext.setAttribute( WikiTagBase.ATTR_CONTEXT,
context,
PageContext.REQUEST_SCOPE );
pageContext.setAttribute( getId(), att );
return EVAL_BODY_BUFFERED;
}
return SKIP_BODY;
}
}