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.ServletException;
024import javax.servlet.jsp.JspException;
025
026import org.apache.log4j.Logger;
027import org.apache.wiki.WikiEngine;
028import org.apache.wiki.ui.EditorManager;
029
030
031/**
032 *  Creates an editor component with all the necessary parts
033 *  to get it working.
034 *  <p>
035 *  In the future, this component should be expanded to provide
036 *  a customized version of the editor according to user preferences.
037 *
038 *  @since 2.2
039 */
040public class EditorTag extends WikiBodyTag {
041
042    private static final long serialVersionUID = 0L;
043    private static final Logger log = Logger.getLogger( EditorTag.class );
044    
045    public final int doWikiStartTag()
046        throws IOException
047    {
048        return SKIP_BODY;
049    }
050       
051    public int doEndTag() throws JspException
052    {
053        WikiEngine engine = m_wikiContext.getEngine();
054        EditorManager mgr = engine.getEditorManager();
055        
056        String editorPath = mgr.getEditorPath( m_wikiContext );
057        
058        try
059        {
060            String page = engine.getTemplateManager().findJSP( pageContext,
061                                                               m_wikiContext.getTemplate(),
062                                                               editorPath );
063            
064            if( page == null )
065            {
066                //FIXME: should be I18N ...
067                pageContext.getOut().println("Unable to find editor '"+editorPath+"'");
068            }
069            else
070            {
071                pageContext.include( page );
072            }
073        }
074        catch( ServletException e )
075        {
076            log.error("Failed to include editor",e);
077            throw new JspException("Failed to include editor: "+e.getMessage() );
078        }
079        catch( IOException e )
080        {
081            throw new JspException("Could not print Editor tag: "+e.getMessage() );
082        }
083        
084        return EVAL_PAGE;
085    }
086}