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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 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!
*
* @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;
}
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();
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 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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