/**
* ===========================================
* LibLayout : a free Java layouting library
* ===========================================
*
* Project Info: http://reporting.pentaho.org/liblayout/
*
* (C) Copyright 2006-2007, by Pentaho Corporation and Contributors.
*
* This library is free software; you can redistribute it and/or modify it under the terms
* of the GNU Lesser General Public License as published by the Free Software Foundation;
* either version 2.1 of the License, or (at your option) any later version.
*
* This library 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.
*
* You should have received a copy of the GNU Lesser General Public License along with this
* library; if not, write to the Free Software Foundation, Inc., 59 Temple Place, Suite 330,
* Boston, MA 02111-1307, USA.
*
* [Java is a trademark or registered trademark of Sun Microsystems, Inc.
* in the United States and other countries.]
*
* ------------
* $Id: DateValueFunction.java 6653 2008-12-02 14:53:40Z tmorgner $
* ------------
* (C) Copyright 2006-2007, by Pentaho Corporation.
*/
package org.jfree.layouting.layouter.style.functions.content;
import java.text.DateFormat;
import java.util.Date;
import java.util.Locale;
import org.jfree.layouting.DocumentContextUtility;
import org.jfree.layouting.LayoutProcess;
import org.jfree.layouting.input.style.values.CSSFunctionValue;
import org.jfree.layouting.input.style.values.CSSStringValue;
import org.jfree.layouting.input.style.values.CSSValue;
import org.jfree.layouting.layouter.content.ContentToken;
import org.jfree.layouting.layouter.content.statics.FormattedContentToken;
import org.jfree.layouting.layouter.i18n.LocalizationContext;
import org.jfree.layouting.layouter.model.LayoutElement;
import org.jfree.layouting.layouter.style.functions.FunctionEvaluationException;
/**
* Creation-Date: 15.04.2006, 18:33:56
*
* @author Thomas Morgner
*/
public class DateValueFunction implements ContentFunction
{
public DateValueFunction()
{
}
public ContentToken evaluate(final LayoutProcess layoutProcess,
final LayoutElement element,
final CSSFunctionValue function)
throws FunctionEvaluationException
{
final Date date = DocumentContextUtility.getDate
(layoutProcess.getDocumentContext());
final CSSValue[] parameters = function.getParameters();
final LocalizationContext localizationContext =
DocumentContextUtility.getLocalizationContext
(layoutProcess.getDocumentContext());
final DateFormat format = getDateFormat
(parameters, localizationContext,
element.getLayoutContext().getLanguage());
return new FormattedContentToken(date, format, format.format(date));
}
private DateFormat getDateFormat(final CSSValue[] parameters,
final LocalizationContext localizationContext,
final Locale locale)
{
if (parameters.length < 1)
{
return localizationContext.getDateFormat(locale);
}
final CSSValue formatValue = parameters[0];
if (formatValue instanceof CSSStringValue == false)
{
return localizationContext.getDateFormat(locale);
}
final CSSStringValue sval = (CSSStringValue) formatValue;
final DateFormat format = localizationContext.getDateFormat
(sval.getValue(), locale);
if (format != null)
{
return format;
}
return localizationContext.getDateFormat(locale);
}
}