001    /**
002     * ========================================
003     * JFreeReport : a free Java report library
004     * ========================================
005     *
006     * Project Info:  http://reporting.pentaho.org/
007     *
008     * (C) Copyright 2000-2007, by Object Refinery Limited, Pentaho Corporation and Contributors.
009     *
010     * This library is free software; you can redistribute it and/or modify it under the terms
011     * of the GNU Lesser General Public License as published by the Free Software Foundation;
012     * either version 2.1 of the License, or (at your option) any later version.
013     *
014     * This library is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
015     * without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
016     * See the GNU Lesser General Public License for more details.
017     *
018     * You should have received a copy of the GNU Lesser General Public License along with this
019     * library; if not, write to the Free Software Foundation, Inc., 59 Temple Place, Suite 330,
020     * Boston, MA 02111-1307, USA.
021     *
022     * [Java is a trademark or registered trademark of Sun Microsystems, Inc.
023     * in the United States and other countries.]
024     *
025     * ------------
026     * $Id: AutoTableItemLayoutController.java 3525 2007-10-16 11:43:48Z tmorgner $
027     * ------------
028     * (C) Copyright 2000-2005, by Object Refinery Limited.
029     * (C) Copyright 2005-2007, by Pentaho Corporation.
030     */
031    
032    package org.jfree.report.modules.misc.autotable.flow;
033    
034    import org.jfree.report.DataFlags;
035    import org.jfree.report.DataSourceException;
036    import org.jfree.report.ReportDataFactoryException;
037    import org.jfree.report.ReportProcessingException;
038    import org.jfree.report.data.ReportDataRow;
039    import org.jfree.report.flow.FlowController;
040    import org.jfree.report.flow.ReportTarget;
041    import org.jfree.report.flow.layoutprocessor.ElementLayoutController;
042    import org.jfree.report.flow.layoutprocessor.LayoutController;
043    import org.jfree.report.modules.misc.autotable.AutoTableCellContent;
044    
045    /**
046     * Creation-Date: Dec 9, 2006, 8:20:51 PM
047     *
048     * @author Thomas Morgner
049     */
050    public class AutoTableItemLayoutController extends ElementLayoutController
051    {
052    
053      public AutoTableItemLayoutController()
054      {
055      }
056    
057      protected AutoTableLayoutController findTableParent ()
058      {
059        LayoutController parent = getParent();
060        while (parent != null)
061        {
062          if (parent instanceof AutoTableLayoutController)
063          {
064            return (AutoTableLayoutController) parent;
065          }
066    
067          parent = parent.getParent();
068        }
069        return null;
070      }
071    
072      protected LayoutController processContent(final ReportTarget target)
073          throws DataSourceException, ReportProcessingException, ReportDataFactoryException
074      {
075        final AutoTableCellContent content = (AutoTableCellContent) getElement();
076        final FlowController flowController = getFlowController();
077        final ReportDataRow reportDataRow =
078            flowController.getMasterRow().getReportDataRow();
079    
080        final AutoTableLayoutController table = findTableParent();
081        if (table == null)
082        {
083          throw new ReportProcessingException("Invalid state: have no auto-table as context.");
084        }
085        final int currentColumn = table.getCurrentColumn();
086    
087        if ("name".equals(content.getItem()))
088        {
089          final String columnName = reportDataRow.getColumnName(currentColumn);
090          target.processText(columnName);
091        }
092        else if ("value".equals(content.getItem()))
093        {
094          final DataFlags flags = reportDataRow.getFlags(currentColumn);
095          target.processContent(flags);
096        }
097        else
098        {
099          throw new ReportProcessingException("Invalid definition: Content-Item with no valid type");
100        }
101    
102        final AutoTableItemLayoutController derived = (AutoTableItemLayoutController) clone();
103        derived.setProcessingState(ElementLayoutController.FINISHING);
104        derived.setFlowController(flowController);
105        return derived;
106    
107      }
108    
109      /**
110       * Joins with a delegated process flow. This is generally called from a child
111       * flow and should *not* (I mean it!) be called from outside. If you do,
112       * you'll suffer.
113       *
114       * @param flowController the flow controller of the parent.
115       * @return the joined layout controller that incorperates all changes from
116       * the delegate.
117       */
118      public LayoutController join(final FlowController flowController)
119      {
120        final AutoTableItemLayoutController derived = (AutoTableItemLayoutController) clone();
121        derived.setProcessingState(ElementLayoutController.FINISHING);
122        derived.setFlowController(flowController);
123        return derived;
124      }
125    }