Source for org.jfree.report.modules.misc.autotable.flow.AutoTableItemLayoutController

   1: /**
   2:  * ========================================
   3:  * JFreeReport : a free Java report library
   4:  * ========================================
   5:  *
   6:  * Project Info:  http://reporting.pentaho.org/
   7:  *
   8:  * (C) Copyright 2000-2007, by Object Refinery Limited, Pentaho Corporation and Contributors.
   9:  *
  10:  * This library is free software; you can redistribute it and/or modify it under the terms
  11:  * of the GNU Lesser General Public License as published by the Free Software Foundation;
  12:  * either version 2.1 of the License, or (at your option) any later version.
  13:  *
  14:  * This library is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
  15:  * without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
  16:  * See the GNU Lesser General Public License for more details.
  17:  *
  18:  * You should have received a copy of the GNU Lesser General Public License along with this
  19:  * library; if not, write to the Free Software Foundation, Inc., 59 Temple Place, Suite 330,
  20:  * Boston, MA 02111-1307, USA.
  21:  *
  22:  * [Java is a trademark or registered trademark of Sun Microsystems, Inc.
  23:  * in the United States and other countries.]
  24:  *
  25:  * ------------
  26:  * $Id: AutoTableItemLayoutController.java 3525 2007-10-16 11:43:48Z tmorgner $
  27:  * ------------
  28:  * (C) Copyright 2000-2005, by Object Refinery Limited.
  29:  * (C) Copyright 2005-2007, by Pentaho Corporation.
  30:  */
  31: 
  32: package org.jfree.report.modules.misc.autotable.flow;
  33: 
  34: import org.jfree.report.DataFlags;
  35: import org.jfree.report.DataSourceException;
  36: import org.jfree.report.ReportDataFactoryException;
  37: import org.jfree.report.ReportProcessingException;
  38: import org.jfree.report.data.ReportDataRow;
  39: import org.jfree.report.flow.FlowController;
  40: import org.jfree.report.flow.ReportTarget;
  41: import org.jfree.report.flow.layoutprocessor.ElementLayoutController;
  42: import org.jfree.report.flow.layoutprocessor.LayoutController;
  43: import org.jfree.report.modules.misc.autotable.AutoTableCellContent;
  44: 
  45: /**
  46:  * Creation-Date: Dec 9, 2006, 8:20:51 PM
  47:  *
  48:  * @author Thomas Morgner
  49:  */
  50: public class AutoTableItemLayoutController extends ElementLayoutController
  51: {
  52: 
  53:   public AutoTableItemLayoutController()
  54:   {
  55:   }
  56: 
  57:   protected AutoTableLayoutController findTableParent ()
  58:   {
  59:     LayoutController parent = getParent();
  60:     while (parent != null)
  61:     {
  62:       if (parent instanceof AutoTableLayoutController)
  63:       {
  64:         return (AutoTableLayoutController) parent;
  65:       }
  66: 
  67:       parent = parent.getParent();
  68:     }
  69:     return null;
  70:   }
  71: 
  72:   protected LayoutController processContent(final ReportTarget target)
  73:       throws DataSourceException, ReportProcessingException, ReportDataFactoryException
  74:   {
  75:     final AutoTableCellContent content = (AutoTableCellContent) getElement();
  76:     final FlowController flowController = getFlowController();
  77:     final ReportDataRow reportDataRow =
  78:         flowController.getMasterRow().getReportDataRow();
  79: 
  80:     final AutoTableLayoutController table = findTableParent();
  81:     if (table == null)
  82:     {
  83:       throw new ReportProcessingException("Invalid state: have no auto-table as context.");
  84:     }
  85:     final int currentColumn = table.getCurrentColumn();
  86: 
  87:     if ("name".equals(content.getItem()))
  88:     {
  89:       final String columnName = reportDataRow.getColumnName(currentColumn);
  90:       target.processText(columnName);
  91:     }
  92:     else if ("value".equals(content.getItem()))
  93:     {
  94:       final DataFlags flags = reportDataRow.getFlags(currentColumn);
  95:       target.processContent(flags);
  96:     }
  97:     else
  98:     {
  99:       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: }