AOO410/main/reportbuilder/java/com/sun/star/report/pentaho/layoutprocessor/OfficeGroupSectionLayoutController.java

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 * 
 * 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
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 * software distributed under the License is distributed on an
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package com.sun.star.report.pentaho.layoutprocessor;

import com.sun.star.report.OfficeToken;
import com.sun.star.report.pentaho.model.OfficeGroupSection;

import org.jfree.layouting.util.AttributeMap;
import org.jfree.report.DataSourceException;
import org.jfree.report.JFreeReportInfo;
import org.jfree.report.ReportDataFactoryException;
import org.jfree.report.ReportProcessingException;
import org.jfree.report.flow.FlowController;
import org.jfree.report.flow.ReportTarget;
import org.jfree.report.flow.layoutprocessor.ElementLayoutController;
import org.jfree.report.flow.layoutprocessor.LayoutController;
import org.jfree.report.flow.layoutprocessor.SectionLayoutController;
import org.jfree.report.structure.Element;

/**
 * This layoutcontroller simply checks, whether the parent layout controller
 * is a OfficeGroupLayoutController and whether this layout controller is
 * processing the normal flow or an repeating section. If a repeating section
 * is being processed, an marker attribute is added to the element's call
 * to OutputProcessor.startElement() and OutputProcessor.endElement().
 *
 * @author Thomas Morgner
 * @since 19.03.2007
 */
public class OfficeGroupSectionLayoutController extends SectionLayoutController
{

    public OfficeGroupSectionLayoutController()
    {
    }

    protected LayoutController startElement(final ReportTarget target)
            throws DataSourceException, ReportProcessingException, ReportDataFactoryException
    {
        final OfficeGroupSection section = (OfficeGroupSection) getElement();
        if (!section.isRepeatSection())
        {
            return super.startElement(target);
        }

        final LayoutController controller = getParent();
        if (!(controller instanceof OfficeGroupLayoutController))
        {
            return super.startElement(target);
        }
        final OfficeGroupLayoutController oglc = (OfficeGroupLayoutController) controller;
        if (!oglc.isNormalFlowProcessing())
        {
            return super.startElement(target);
        }

        // Skip the processing if the section is a repeating header or footer and we are processing the normal flow ..
        final ElementLayoutController clone = (ElementLayoutController) this.clone();
        clone.setProcessingState(ElementLayoutController.FINISHED);
        return clone;
    }

    protected AttributeMap computeAttributes(final FlowController fc,
            final Element element,
            final ReportTarget target)
            throws DataSourceException
    {
        final AttributeMap attrs = super.computeAttributes(fc, element, target);
        final LayoutController controller = getParent();
        if (!(controller instanceof OfficeGroupLayoutController))
        {
            return attrs;
        }
        final OfficeGroupLayoutController oglc = (OfficeGroupLayoutController) controller;
        if (oglc.isNormalFlowProcessing())
        {
            return attrs;
        }

        final AttributeMap retval = new AttributeMap(attrs);
        retval.setAttribute(JFreeReportInfo.REPORT_NAMESPACE, "repeated-section", OfficeToken.TRUE);
        retval.makeReadOnly();
        return retval;
    }
}