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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.FormatCondition;
import com.sun.star.report.pentaho.model.FormattedTextElement;
import com.sun.star.report.pentaho.model.ReportElement;
import org.jfree.layouting.util.AttributeMap;
import org.jfree.report.DataFlags;
import org.jfree.report.DataSourceException;
import org.jfree.report.expressions.Expression;
import org.jfree.report.expressions.FormulaExpression;
import org.jfree.report.flow.FlowController;
import org.jfree.report.flow.ReportTarget;
import org.jfree.report.flow.layoutprocessor.LayoutControllerUtil;
import org.jfree.report.flow.layoutprocessor.SectionLayoutController;
import org.jfree.report.structure.Element;
import org.jfree.report.structure.Node;
import org.jfree.report.structure.Section;
import org.pentaho.reporting.libraries.formula.Formula;
import org.pentaho.reporting.libraries.formula.lvalues.LValue;
import org.pentaho.reporting.libraries.formula.parser.ParseException;
import org.pentaho.reporting.libraries.base.util.ObjectUtilities;
/**
* Before writing the table cell, we have to evaluate the children of the cell. The cell itself can either be empty or it
* has a one ore more paragraphs inside. The paragraph contains a single report element, but may contain additional
* other content.
*
* @noinspection CloneableClassWithoutClone
* @since 05.03.2007
*/
public class TableCellLayoutController extends SectionLayoutController
{
public TableCellLayoutController()
{
}
protected AttributeMap computeAttributes(final FlowController fc,
final Element element,
final ReportTarget target)
throws DataSourceException
{
final AttributeMap attributeMap = new AttributeMap(super.computeAttributes(fc, element, target));
final String definedStyle = (String) attributeMap.getAttribute(OfficeNamespaces.TABLE_NS, OfficeToken.STYLE_NAME);
attributeMap.setAttribute(OfficeNamespaces.TABLE_NS, OfficeToken.STYLE_NAME, getDisplayStyleName((Section) element, definedStyle));
try
{
final DataFlags value = computeValue(attributeMap);
final String valueType = (String) attributeMap.getAttribute(OfficeNamespaces.OFFICE_NS, FormatValueUtility.VALUE_TYPE);
if (value != null)
{
FormatValueUtility.applyValueForCell(value.getValue(), attributeMap, valueType);
}
else if ( "float".equals(valueType))
{
attributeMap.setAttribute(OfficeNamespaces.OFFICE_NS,
FormatValueUtility.VALUE, "NaN");
}
// #i114108#: except on form elements, the only value-type that can
// occur without an accomanying value attribute is "string"
else if (!"string".equals(valueType))
{
attributeMap.setAttribute(OfficeNamespaces.OFFICE_NS,
FormatValueUtility.VALUE_TYPE, "string");
}
}
catch (Exception e)
{
// ignore ..
}
attributeMap.makeReadOnly();
return attributeMap;
}
private DataFlags computeValue(final AttributeMap attributeMap) throws DataSourceException
{
// Search for the first FormattedTextElement
final Section cell = (Section) getElement();
final FormattedTextElement element = findFormattedTextElement(cell);
if (element == null)
{
return null;
}
if (!FormatValueUtility.shouldPrint(this, element))
{
attributeMap.setAttribute(OfficeNamespaces.OFFICE_NS,
FormatValueUtility.VALUE_TYPE, "string");
return null;
}
return FormatValueUtility.computeDataFlag(element, getFlowController());
}
public boolean isValueChanged()
{
try
{
final Section cell = (Section) getElement();
final FormattedTextElement element = findFormattedTextElement(cell);
if (element == null)
return false;
else
{
final FormulaExpression formulaExpression = element.getValueExpression();
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;
}
}
private FormattedTextElement findFormattedTextElement(final Section section)
{
final Node[] nodeArray = section.getNodeArray();
for (int i = 0; i < nodeArray.length; i++)
{
final Node node = nodeArray[i];
if (node instanceof FormattedTextElement)
{
return (FormattedTextElement) node;
}
else if (node instanceof Section)
{
final FormattedTextElement retval = findFormattedTextElement((Section) node);
if (retval != null)
{
return retval;
}
}
}
return null;
}
private String getDisplayStyleName(final Section section,
final String defaultStyle)
{
if (!section.isEnabled() || section.getNodeCount() == 0)
{
return defaultStyle;
}
final Node[] nodes = section.getNodeArray();
for (int i = 0; i < nodes.length; i++)
{
final Node child = nodes[i];
if (child instanceof ReportElement && child.isEnabled())
{
final ReportElement element = (ReportElement) child;
if (element.getFormatConditionCount() > 0)
{
final Expression displayCond = element.getDisplayCondition();
if (displayCond != null)
{
try
{
if (Boolean.FALSE.equals(LayoutControllerUtil.evaluateExpression(getFlowController(), element, displayCond)))
{
continue;
}
}
catch (DataSourceException e)
{
// ignore silently ..
}
}
final FormatCondition[] conditions = element.getFormatConditions();
for (int j = 0; j < conditions.length; j++)
{
final FormatCondition formCond = conditions[j];
if (formCond.isEnabled())
{
try
{
final Object o = LayoutControllerUtil.evaluateExpression(getFlowController(), element, formCond.getFormula());
if (Boolean.TRUE.equals(o))
{
return formCond.getStyleName();
}
}
catch (DataSourceException e)
{
// ignore silently ..
}
}
}
}
}
if (child instanceof Section)
{
final String childFormatCondition =
getDisplayStyleName((Section) child, defaultStyle);
if (!ObjectUtilities.equal(childFormatCondition, defaultStyle))
{
return childFormatCondition;
}
}
}
return defaultStyle;
}
}
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