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/*
* This file is part of the LibreOffice project.
*
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/.
*
* This file incorporates work covered by the following license notice:
*
* 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 .
*/
package org.libreoffice.report.pentaho.layoutprocessor;
import org.libreoffice.report.pentaho.OfficeNamespaces;
import org.libreoffice.report.pentaho.model.FormattedTextElement;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.jfree.report.DataFlags;
import org.jfree.report.DataSourceException;
import org.jfree.report.ReportDataFactoryException;
import org.jfree.report.ReportProcessingException;
import org.jfree.report.expressions.FormulaExpression;
import org.jfree.report.flow.ReportTarget;
import org.jfree.report.flow.layoutprocessor.LayoutController;
import org.jfree.report.structure.Element;
import org.pentaho.reporting.libraries.formula.Formula;
import org.pentaho.reporting.libraries.formula.lvalues.LValue;
import org.pentaho.reporting.libraries.formula.parser.ParseException;
/**
* Todo: Document me!
*
* @since 05.03.2007
*/
public class FormattedTextLayoutController
extends AbstractReportElementLayoutController
{
private static final Log LOGGER = LogFactory.getLog(FormattedTextLayoutController.class);
public FormattedTextLayoutController()
{
}
public boolean isValueChanged()
{
try
{
final FormattedTextElement element = (FormattedTextElement) getNode();
final FormulaExpression formulaExpression = element.getValueExpression();
if (formulaExpression.getFormulaExpression() == null)
return false;
final Formula formula = formulaExpression.getCompiledFormula();
final LValue lValue = formula.getRootReference();
return FormatValueUtility.isReferenceChanged(this, lValue);
}
catch (final ParseException e)
{
LOGGER.debug("Parse Exception", e);
return false;
}
}
protected LayoutController delegateContentGeneration(final ReportTarget target)
throws ReportProcessingException, ReportDataFactoryException,
DataSourceException
{
final FormattedTextElement element = (FormattedTextElement) getNode();
// LEM 20130812 I have absolutely no clue why it wants to go via
// a variable like that. It complicates things, is fragile
// (because the variable-set is done in *every* detail section
// again and again. This in itself is not that bad, but when
// the detail section is of height zero, the "set" is never done...
// and this whole schema fails). For now, keep the code in case
// something break. If we survive the 4.2 cycle (in its entirety)
// without regression traced to this, then remove it (for 4.4 or
// something like that).
// final VariablesCollection vc = getVariablesCollection();
// if (vc != null)
// {
// final String name = vc.addVariable(element);
// final AttributeMap variablesGet = new AttributeMap();
// variablesGet.setAttribute(JFreeReportInfo.REPORT_NAMESPACE,
// Element.TYPE_ATTRIBUTE, "variable-get");
// variablesGet.setAttribute(JFreeReportInfo.REPORT_NAMESPACE,
// Element.NAMESPACE_ATTRIBUTE, OfficeNamespaces.TEXT_NS);
// variablesGet.setAttribute(OfficeNamespaces.TEXT_NS, "name", name);
// final String dataStyleName = computeValueStyle();
// if (dataStyleName != null)
// {
// variablesGet.setAttribute(OfficeNamespaces.STYLE_NS, "data-style-name", dataStyleName);
// }
// final String valueType = computeValueType();
// variablesGet.setAttribute(OfficeNamespaces.OFFICE_NS, FormatValueUtility.VALUE_TYPE, valueType);
// target.startElement(variablesGet);
// target.endElement(variablesGet);
// }
// else
{
final DataFlags df = FormatValueUtility.computeDataFlag(element, getFlowController());
if (df != null)
{
if (df.getValue() instanceof String)
{
target.processContent(df);
}
else //@see http://qa.openoffice.org/issues/show_bug.cgi?id=108954
{
Element cell = getParentTableCell();
if (cell != null && "string".equals(cell.getAttribute(OfficeNamespaces.OFFICE_NS, FormatValueUtility.VALUE_TYPE)))
{
target.processContent(df);
}
}
}
}
return join(getFlowController());
}
private Element getParentTableCell()
{
LayoutController parent = getParent();
while (parent != null)
{
if (parent instanceof TableCellLayoutController)
{
final TableCellLayoutController cellController = (TableCellLayoutController) parent;
return cellController.getElement();
}
parent = parent.getParent();
}
return null;
}
}
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