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/*************************************************************************
*
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* Copyright 2000, 2010 Oracle and/or its affiliates.
*
* OpenOffice.org - a multi-platform office productivity suite
*
* This file is part of OpenOffice.org.
*
* OpenOffice.org is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License version 3
* only, as published by the Free Software Foundation.
*
* OpenOffice.org 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 version 3 for more details
* (a copy is included in the LICENSE file that accompanied this code).
*
* You should have received a copy of the GNU Lesser General Public License
* version 3 along with OpenOffice.org. If not, see
* <http://www.openoffice.org/license.html>
* for a copy of the LGPLv3 License.
*
************************************************************************/
package com.sun.star.report.pentaho.layoutprocessor;
import com.sun.star.report.OfficeToken;
import com.sun.star.report.pentaho.OfficeNamespaces;
import com.sun.star.report.pentaho.model.FormattedTextElement;
import com.sun.star.report.pentaho.model.OfficeDocument;
import com.sun.star.report.pentaho.model.OfficeStyle;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.jfree.layouting.util.AttributeMap;
import org.jfree.report.DataFlags;
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.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!
*
* @author Thomas Morgner
* @since 05.03.2007
*/
public class FormattedTextLayoutController
extends AbstractReportElementLayoutController
{
private static final Log LOGGER = LogFactory.getLog(FormattedTextLayoutController.class);
public FormattedTextLayoutController()
{
}
private VariablesCollection getVariablesCollection()
{
LayoutController parent = getParent();
while (parent != null)
{
if (parent instanceof OfficeRepeatingStructureLayoutController)
{
final OfficeRepeatingStructureLayoutController orslc =
(OfficeRepeatingStructureLayoutController) parent;
if (orslc.isNormalFlowProcessing())
{
return null;
}
return orslc.getVariablesCollection();
}
parent = parent.getParent();
}
return null;
}
protected boolean isValueChanged()
{
try
{
final FormattedTextElement element = (FormattedTextElement) getNode();
final FormulaExpression formulaExpression = element.getValueExpression();
final Formula formula = formulaExpression.getCompiledFormula();
final LValue lValue = formula.getRootReference();
return isReferenceChanged(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();
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);
//variablesGet.setAttribute(OfficeNamespaces.TEXT_NS, "display", "value");
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 && df.getValue() instanceof String )
{
target.processContent(df);
}
}
return join(getFlowController());
}
private OfficeDocument getDocument()
{
LayoutController parent = getParent();
while (parent != null)
{
final Object node = parent.getNode();
if (node instanceof OfficeDocument)
{
return (OfficeDocument) node;
}
parent = parent.getParent();
}
return null;
}
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;
}
private String computeValueStyle()
{
final Element tce = getParentTableCell();
if (tce == null)
{
return null;
}
final String cellStyleName = (String) tce.getAttribute(OfficeNamespaces.TABLE_NS, OfficeToken.STYLE_NAME);
if (cellStyleName == null)
{
return null;
}
final OfficeDocument document = getDocument();
if (document == null)
{
return null;
}
final OfficeStyle style = document.getStylesCollection().getStyle("table-cell", cellStyleName);
return (String) style.getAttribute(OfficeNamespaces.STYLE_NS, "data-style-name");
}
private String computeValueType()
{
final Element tce = getParentTableCell();
if (tce == null)
{
// NO particular format means: Fallback to string and hope and pray ..
throw new IllegalStateException("A formatted text element must be a child of a Table-Cell.");
}
final String type = (String) tce.getAttribute(OfficeNamespaces.OFFICE_NS, FormatValueUtility.VALUE_TYPE);
if (type == null)
{
LOGGER.error("The Table-Cell does not have a office:value attribute defined. Your content will be messed up.");
return "string";
}
return type;
}
}
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