| /* |
| 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 org.apache.wiki.tags; |
| |
| import org.apache.log4j.Logger; |
| import org.apache.wiki.WikiContext; |
| import org.apache.wiki.WikiEngine; |
| import org.apache.wiki.WikiPage; |
| import org.apache.wiki.api.exceptions.ProviderException; |
| import org.apache.wiki.attachment.Attachment; |
| import org.apache.wiki.attachment.AttachmentManager; |
| |
| import javax.servlet.jsp.JspWriter; |
| import javax.servlet.jsp.PageContext; |
| import java.io.IOException; |
| import java.util.List; |
| |
| |
| /** |
| * 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; |
| |
| private static final Logger log = Logger.getLogger( AttachmentsIteratorTag.class ); |
| |
| /** |
| * {@inheritDoc} |
| */ |
| @Override |
| public final int doStartTag() { |
| m_wikiContext = (WikiContext) pageContext.getAttribute( WikiTagBase.ATTR_CONTEXT, PageContext.REQUEST_SCOPE ); |
| final WikiEngine engine = m_wikiContext.getEngine(); |
| final AttachmentManager mgr = engine.getAttachmentManager(); |
| final WikiPage page; |
| |
| page = m_wikiContext.getPage(); |
| |
| if( !mgr.attachmentsEnabled() ) |
| { |
| return SKIP_BODY; |
| } |
| |
| try { |
| if( page != null && engine.getPageManager().wikiPageExists(page) ) { |
| final List< Attachment > 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() ) { |
| final Attachment att = (Attachment) m_iterator.next(); |
| final 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( final ProviderException e ) { |
| log.fatal("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 { |
| final JspWriter out = getPreviousOut(); |
| out.print(bodyContent.getString()); |
| bodyContent.clearBody(); |
| } catch( final IOException e ) { |
| log.error("Unable to get inner tag text", e); |
| // FIXME: throw something? |
| } |
| } |
| |
| if( m_iterator != null && m_iterator.hasNext() ) { |
| final Attachment att = ( Attachment )m_iterator.next(); |
| final 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; |
| } |
| |
| } |