Package org.apache.jetspeed.services.jsp.tags

Source Code of org.apache.jetspeed.services.jsp.tags.JetspeedPaneTag

package org.apache.jetspeed.services.jsp.tags;

/* ====================================================================
* The Apache Software License, Version 1.1
*
* Copyright (c) 2000-2001 The Apache Software Foundation.  All rights
* reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
*    notice, this list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright
*    notice, this list of conditions and the following disclaimer in
*    the documentation and/or other materials provided with the
*    distribution.
*
* 3. The end-user documentation included with the redistribution,
*    if any, must include the following acknowledgment:
*       "This product includes software developed by the
*        Apache Software Foundation (http://www.apache.org/)."
*    Alternately, this acknowledgment may appear in the software itself,
*    if and wherever such third-party acknowledgments normally appear.
*
* 4. The names "Apache" and "Apache Software Foundation" and
*     "Apache Jetspeed" must not be used to endorse or promote products
*    derived from this software without prior written permission. For
*    written permission, please contact apache@apache.org.
*
* 5. Products derived from this software may not be called "Apache" or
*    "Apache Jetspeed", nor may "Apache" appear in their name, without
*    prior written permission of the Apache Software Foundation.
*
* THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED.  IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR
* ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
* USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
* ====================================================================
*
* This software consists of voluntary contributions made by many
* individuals on behalf of the Apache Software Foundation.  For more
* information on the Apache Software Foundation, please see
* <http://www.apache.org/>.
*/

//import java.util.*;
import javax.servlet.jsp.JspException;
import javax.servlet.jsp.PageContext;
import javax.servlet.jsp.tagext.TagSupport;

// Turbine Classes
import org.apache.turbine.util.Log;
import org.apache.turbine.services.jsp.JspService;

import org.apache.ecs.ConcreteElement;

import org.apache.jetspeed.services.resources.JetspeedResources;
import org.apache.jetspeed.services.rundata.JetspeedRunData;
import org.apache.jetspeed.util.template.JetspeedTool;

/**
* Supporting class for the pane tag.
* Builds the output of a PSML config file and insert it within the
* current JSP page
*
* @author <a href="mailto:raphael@apache.org">Rapha�l Luta</a>
* @author <a href="mailto:morciuch@apache.org">Mark Orciuch</a>
* @version $Id: JetspeedPaneTag.java,v 1.4 2002/11/11 22:35:18 morciuch Exp $
*/
public class JetspeedPaneTag extends TagSupport
{
    private String name = null;

    public void setName(String name)
    {
        this.name = name;
    }
   
    public String getName()
    {
        return this.name;
    }
  
    /**
     * Method called when the tag is encountered to send attributes to the
     * output stream
     *
     * @return SKIP_BODY, as it is intended to be a single tag.
     */
    public int doStartTag() throws JspException                  
    {
        JetspeedRunData data = (JetspeedRunData) pageContext.getAttribute(JspService.RUNDATA, PageContext.REQUEST_SCOPE);
       
        // retrieve the name attribute val
        if (this.name == null)
        {
            this.name = JetspeedResources.getString("screen.homepage");
        }
           
        try
       
            pageContext.getOut().flush();

            ConcreteElement result = new ConcreteElement();

            if (data != null && data.getUser() != null)
            {
                JetspeedTool jt = new JetspeedTool(data);
                String jspeid = (String) data.getUser().getTemp("js_peid");
                if (jspeid != null)
                {
                    data.setMode(JetspeedRunData.MAXIMIZE);
                    result = jt.getPortletById(jspeid);
                }
                else
                {
                    result = jt.getPane(this.name);
                }
            }
       
            // Check whether this is an "old" screen (that returns a ConcreteElement)
            // or a "new" one that returns null.
            if (result != null)
            {
                //The ECS element must serialize in the character encoding
                // of the response
                result.setCodeSet(data.getResponse().getCharacterEncoding());

                result.output(data.getResponse().getWriter());
            }

        }
        catch (Exception e)
        {
            String message = "Error processing name '" + name + "'.";
            Log.error(message, e);
            try
            {
                data.getOut().print("Error processing ecs screen '" + name + "'. See log for more information.");
            }
            catch (java.io.IOException ioe)
            {
            }   
        }
        return SKIP_BODY;
    }
}
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