/*
* This program 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.
*
* You should have received a copy of the GNU Lesser General Public License along with this
* program; if not, you can obtain a copy at http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html
* or from the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*
* This program 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.
*
* Copyright (c) 2001 - 2013 Object Refinery Ltd, Pentaho Corporation and Contributors.. All rights reserved.
*/
package org.pentaho.reporting.engine.classic.core.filter.types;
import java.util.Locale;
import org.pentaho.reporting.engine.classic.core.AttributeNames;
import org.pentaho.reporting.engine.classic.core.MetaAttributeNames;
import org.pentaho.reporting.engine.classic.core.ReportElement;
import org.pentaho.reporting.engine.classic.core.function.ExpressionRuntime;
import org.pentaho.reporting.engine.classic.core.metadata.ElementType;
import org.pentaho.reporting.engine.classic.core.wizard.DataAttributes;
import org.pentaho.reporting.engine.classic.core.wizard.DefaultDataAttributeContext;
public class LabelType extends AbstractElementType
{
public static final ElementType INSTANCE = new LabelType();
public LabelType()
{
super("label");
}
/**
* Returns the current value for the data source.
*
* @param runtime the expression runtime that is used to evaluate formulas and expressions when computing the value of
* this filter.
* @param element
* @return the value.
*/
public Object getValue(final ExpressionRuntime runtime, final ReportElement element)
{
if (runtime == null)
{
throw new NullPointerException("Runtime must never be null.");
}
if (element == null)
{
throw new NullPointerException("Element must never be null.");
}
final Object retval = ElementTypeUtils.queryStaticValue(element);
if (retval == null)
{
return element.getAttribute(AttributeNames.Core.NAMESPACE, AttributeNames.Core.NULL_VALUE);
}
return String.valueOf(retval);
}
public Object getDesignValue(final ExpressionRuntime runtime, final ReportElement element)
{
if (Boolean.TRUE.equals(element.getAttribute
(AttributeNames.Wizard.NAMESPACE, AttributeNames.Wizard.ALLOW_METADATA_ATTRIBUTES)))
{
final Object labelFor = element.getAttribute
(AttributeNames.Wizard.NAMESPACE, AttributeNames.Wizard.LABEL_FOR);
if (labelFor instanceof String)
{
final String labelForText = (String) labelFor;
final DataAttributes attributes = runtime.getDataSchema().getAttributes(labelForText);
if (attributes != null)
{
final DefaultDataAttributeContext context = new DefaultDataAttributeContext
(runtime.getProcessingContext().getOutputProcessorMetaData(),
runtime.getResourceBundleFactory().getLocale());
final Object o = attributes.getMetaAttribute
(MetaAttributeNames.Formatting.NAMESPACE, MetaAttributeNames.Formatting.LABEL, String.class, context);
if (o != null)
{
return o;
}
}
}
}
final Object retval = ElementTypeUtils.queryStaticValue(element);
if (retval == null)
{
return "Label";
}
return String.valueOf(retval);
}
public void configureDesignTimeDefaults(final ReportElement element, final Locale locale)
{
element.setAttribute(AttributeNames.Core.NAMESPACE, AttributeNames.Core.VALUE, "Label");
}
}