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+/*************************************************************************
+ *
+ * OpenOffice.org - a multi-platform office productivity suite
+ *
+ * $RCSfile: VariablesDeclarationLayoutController.java,v $
+ *
+ * $Revision: 1.2 $
+ *
+ * last change: $Author: rt $ $Date: 2007-07-09 11:56:06 $
+ *
+ * The Contents of this file are made available subject to
+ * the terms of GNU Lesser General Public License Version 2.1.
+ *
+ *
+ * GNU Lesser General Public License Version 2.1
+ * =============================================
+ * Copyright 2007 by Sun Microsystems, Inc.
+ * 901 San Antonio Road, Palo Alto, CA 94303, USA
+ * Copyright 2007 by Pentaho Corporation
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License version 2.1, as published by the Free Software Foundation.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ *
+ ************************************************************************/
+
+
+package com.sun.star.report.pentaho.layoutprocessor;
+
+import com.sun.star.report.pentaho.OfficeNamespaces;
+import com.sun.star.report.pentaho.model.FormattedTextElement;
+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.expressions.FormulaExpression;
+import org.jfree.report.flow.FlowController;
+import org.jfree.report.flow.ReportTarget;
+import org.jfree.report.flow.layoutprocessor.AbstractLayoutController;
+import org.jfree.report.flow.layoutprocessor.LayoutController;
+import org.jfree.report.flow.layoutprocessor.LayoutControllerUtil;
+import org.jfree.report.structure.Element;
+
+/**
+ * Writes a full variables-declaration section.
+ *
+ * @author Thomas Morgner
+ * @since 20.03.2007
+ */
+public class VariablesDeclarationLayoutController
+ extends AbstractLayoutController
+{
+ private boolean processed;
+
+ public VariablesDeclarationLayoutController()
+ {
+ }
+
+ private OfficeRepeatingStructureLayoutController getRepeatingParent()
+ {
+ LayoutController parent = getParent();
+ while (parent != null)
+ {
+ if (parent instanceof OfficeRepeatingStructureLayoutController)
+ {
+ return (OfficeRepeatingStructureLayoutController) parent;
+ }
+ parent = parent.getParent();
+ }
+ return null;
+ }
+
+ /**
+ * Advances the processing position.
+ *
+ * @param target the report target that receives generated events.
+ * @return the new layout controller instance representing the new state.
+ *
+ * @throws org.jfree.report.DataSourceException
+ * if there was a problem reading data from the datasource.
+ * @throws org.jfree.report.ReportProcessingException
+ * if there was a general problem during the report processing.
+ * @throws org.jfree.report.ReportDataFactoryException
+ * if a query failed.
+ */
+ public LayoutController advance(final ReportTarget target)
+ throws DataSourceException, ReportDataFactoryException,
+ ReportProcessingException
+ {
+ if (processed)
+ {
+ throw new IllegalStateException("Already processed.");
+ }
+
+ final VariablesDeclarationLayoutController vlc =
+ (VariablesDeclarationLayoutController) clone();
+ vlc.processed = true;
+
+ final OfficeRepeatingStructureLayoutController orslc = getRepeatingParent();
+ if (orslc == null)
+ {
+ // There is no repeating parent. What the heck are we doing here ..
+ return vlc;
+ }
+
+ final VariablesCollection collection = orslc.getVariablesCollection();
+ if (collection.getVariablesCount() == 0)
+ {
+ // no processing necessary, as the header or footer contain no variables at all ..
+ return vlc;
+ }
+
+
+ final Element node = (Element) getNode();
+ final AttributeMap vdSection = node.getAttributeMap();
+ target.startElement(vdSection);
+
+ final FormattedTextElement[] variables = collection.getVariables();
+ for (int i = 0; i < variables.length; i++)
+ {
+ final FormattedTextElement variable = variables[i];
+ final String varName = collection.getNamePrefix() + (i + 1);
+ final AttributeMap map = generateVariableSetSection(variable);
+ map.setAttribute(OfficeNamespaces.TEXT_NS, "name", varName);
+ target.startElement(map);
+ target.endElement(map);
+
+ }
+ target.endElement(vdSection);
+ return vlc;
+ }
+
+ private AttributeMap generateVariableSetSection(final FormattedTextElement variable)
+ throws DataSourceException
+ {
+ final AttributeMap variableSection = new AttributeMap();
+ variableSection.setAttribute(JFreeReportInfo.REPORT_NAMESPACE, Element.NAMESPACE_ATTRIBUTE, OfficeNamespaces.TEXT_NS);
+ variableSection.setAttribute(JFreeReportInfo.REPORT_NAMESPACE, Element.TYPE_ATTRIBUTE, "variable-set");
+ variableSection.setAttribute(OfficeNamespaces.TEXT_NS, "display", "none");
+
+ final FormulaExpression valueExpression = variable.getValueExpression();
+ final Object value = LayoutControllerUtil.evaluateExpression(getFlowController(), variable, valueExpression);
+ FormatValueUtility.applyValueForVariable(value, variableSection);
+ variableSection.setAttribute(OfficeNamespaces.TEXT_NS, "formula", "ooow:" + String.valueOf(value));
+ return variableSection;
+ }
+
+ /**
+ * Checks, whether the layout controller would be advanceable. If this method
+ * returns true, it is generally safe to call the 'advance()' method.
+ *
+ * @return true, if the layout controller is advanceable, false otherwise.
+ */
+ public boolean isAdvanceable()
+ {
+ return processed == false;
+ }
+
+ /**
+ * Joins with a delegated process flow. This is generally called from a child
+ * flow and should *not* (I mean it!) be called from outside. If you do,
+ * you'll suffer.
+ *
+ * @param flowController the flow controller of the parent.
+ * @return the joined layout controller that incorperates all changes from the
+ * delegate.
+ */
+ public LayoutController join(final FlowController flowController)
+ throws DataSourceException, ReportDataFactoryException,
+ ReportProcessingException
+ {
+ throw new UnsupportedOperationException
+ ("Join is not supported in this layout controller");
+ }
+}