SaikuUpdateMessagesTask.java

/*
 * Copyright (C) 2011 Marius Giepz
 *
 * This program is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License as published by the Free
 * Software Foundation; either version 2 of the License, or (at your option)
 * any later version.
 *
 * 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 GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License along
 * with this program; if not, write to the Free Software Foundation, Inc.,
 * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
 *
 */
package org.saiku.adhoc.service.report.tasks;

import java.util.List;

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.pentaho.reporting.engine.classic.core.AttributeNames;
import org.pentaho.reporting.engine.classic.core.Element;
import org.pentaho.reporting.engine.classic.core.ReportElement;
import org.saiku.adhoc.model.master.SaikuElementFormat;
import org.saiku.adhoc.model.master.SaikuLabel;
import org.saiku.adhoc.model.master.SaikuMasterModel;
import org.saiku.adhoc.utils.TemplateUtils;

public class SaikuUpdateMessagesTask implements UpdateTask {

	private Log log = LogFactory.getLog(SaikuUpdateMessagesTask.class);
	private List<SaikuLabel> messages;
	private String prefix;
	private SaikuMasterModel model;

	public SaikuUpdateMessagesTask(List<SaikuLabel> messages,
			String prefix, SaikuMasterModel model) {

		this.messages = messages;
		this.prefix = prefix + "0-";
		this.model = model;

	}

	@Override
	public void processElement(ReportElement e, int index) {

		Element el = (Element) e;

		final String uid = prefix + index;

		//markup the element
		if(el.getElementTypeName().equals("message") ||
				el.getElementTypeName().equals("label")||
				e.getAttribute("http://reporting.pentaho.org/namespaces/engine/attributes/wizard", "aggregation-type")!=null){		
			final String htmlClass = "saiku " + uid;
			e.setAttribute(AttributeNames.Html.NAMESPACE, AttributeNames.Html.STYLE_CLASS, htmlClass);


			SaikuLabel m = null;

			for (SaikuLabel msg : this.messages) {
				if(uid.equals(msg.getUid())){
					m = msg;
					break;
				}
			}
			if(m==null){
				m = new SaikuLabel();
				m.setElementFormat(new SaikuElementFormat());
				m.setUid(uid);
				String val =(String) e.getAttribute(AttributeNames.Core.NAMESPACE, AttributeNames.Core.VALUE);
				m.setValue(val);
				this.messages.add(m);

				m.setLayoutId(uid);
				
			}

			e.setAttribute("http://reporting.pentaho.org/namespaces/engine/attributes/wizard", "allow-metadata-styling", Boolean.FALSE);

			if(e.getAttribute("http://reporting.pentaho.org/namespaces/engine/attributes/wizard", "aggregation-type")==null){
				e.setAttribute(AttributeNames.Core.NAMESPACE, AttributeNames.Core.VALUE, m.getValue());
			}
	
			SaikuElementFormat tempFormat = (SaikuElementFormat) m.getElementFormat().clone();

			TemplateUtils.mergeElementFormats(e.getStyle(), tempFormat);

			//set a transient format
			m.getElementFormat().setTempFormat(tempFormat);

		}


	}

}