/**
* ===========================================
* 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: FormatValueFunction.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.Format;
import java.util.Date;
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.CSSNumericValue;
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.content.statics.StaticTextToken;
import org.jfree.layouting.layouter.context.LayoutContext;
import org.jfree.layouting.layouter.i18n.LocalizationContext;
import org.jfree.layouting.layouter.model.LayoutElement;
import org.jfree.layouting.layouter.style.functions.FunctionEvaluationException;
import org.jfree.layouting.layouter.style.functions.FunctionUtilities;
import org.jfree.layouting.layouter.style.values.CSSFormatedValue;
import org.jfree.layouting.layouter.style.values.CSSRawValue;
/**
* Creation-Date: 16.04.2006, 14:14:42
*
* @author Thomas Morgner
*/
public class FormatValueFunction implements ContentFunction
{
public FormatValueFunction()
{
}
// takes two or three parameters.
// param1: What shall we format
// param2: What data do we expect
// param3: What format string shall we use
public ContentToken evaluate(final LayoutProcess layoutProcess,
final LayoutElement element,
final CSSFunctionValue function)
throws FunctionEvaluationException
{
final CSSValue[] params = function.getParameters();
if (params.length < 2)
{
throw new FunctionEvaluationException("Illegal parameter count");
}
final CSSValue rawValue = FunctionUtilities.resolveParameter(layoutProcess, element, params[0]);
final String typeValue = FunctionUtilities.resolveString(layoutProcess, element, params[1]);
final LocalizationContext localizationContext =
DocumentContextUtility.getLocalizationContext
(layoutProcess.getDocumentContext());
final LayoutContext layoutContext = element.getLayoutContext();
if ("date".equals(typeValue))
{
if (params.length < 3)
{
return getDateValue(rawValue,
localizationContext.getDateFormat(layoutContext.getLanguage()));
}
else
{
final String format = FunctionUtilities.resolveString(layoutProcess, element, params[2]);
return getDateValue(rawValue,
localizationContext.getDateFormat(format, layoutContext.getLanguage()));
}
}
else if ("time".equals(typeValue))
{
if (params.length != 2)
{
throw new FunctionEvaluationException();
}
return getDateValue(rawValue,
localizationContext.getTimeFormat(layoutContext.getLanguage()));
}
else if ("number".equals(typeValue))
{
if (params.length < 3)
{
return getNumberValue(rawValue,
localizationContext.getDateFormat(layoutContext.getLanguage()));
}
else
{
final String format = FunctionUtilities.resolveString(layoutProcess, element, params[2]);
return getNumberValue(rawValue,
localizationContext.getNumberFormat(format, layoutContext.getLanguage()));
}
}
else if ("integer".equals(typeValue))
{
if (params.length != 2)
{
throw new FunctionEvaluationException();
}
return getNumberValue(rawValue,
localizationContext.getIntegerFormat(layoutContext.getLanguage()));
}
throw new FunctionEvaluationException("FormatType not recognized");
}
private ContentToken getNumberValue
(final CSSValue rawValue,
final Format format)
throws FunctionEvaluationException
{
final double number;
if (rawValue instanceof CSSStringValue)
{
final CSSStringValue strVal = (CSSStringValue) rawValue;
try
{
final CSSNumericValue nval = FunctionUtilities.parseNumberValue(strVal.getValue());
number = nval.getValue();
}
catch(FunctionEvaluationException fee)
{
return new StaticTextToken (strVal.getValue());
}
}
else if (rawValue instanceof CSSNumericValue)
{
final CSSNumericValue nval = (CSSNumericValue) rawValue;
number = nval.getValue();
}
else
{
// Raw-Values should not have been created for number values
throw new FunctionEvaluationException("Not a numeric value.");
}
final Double obj = new Double(number);
return new FormattedContentToken
(obj, format, format.format(obj));
}
private FormattedContentToken getDateValue
(final CSSValue rawValue,
final Format format)
throws FunctionEvaluationException
{
final Date date;
if (rawValue instanceof CSSRawValue)
{
final CSSRawValue cssRawValue = (CSSRawValue) rawValue;
final Object o = cssRawValue.getValue();
if (o instanceof Date == false)
{
throw new FunctionEvaluationException("Not a date value.");
}
date = (Date) o;
}
else if (rawValue instanceof CSSFormatedValue)
{
final CSSFormatedValue fval = (CSSFormatedValue) rawValue;
final Object o = fval.getRaw();
if (o instanceof Date == false)
{
throw new FunctionEvaluationException("Not a date value.");
}
date = (Date) o;
}
else
{
throw new FunctionEvaluationException("Not a date value.");
}
return new FormattedContentToken
(date, format, format.format(date));
}
}