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/**
* ===========================================
* 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: CounterModificationReadHandler.java 3524 2007-10-16 11:26:31Z tmorgner $
* ------------
* (C) Copyright 2006-2007, by Pentaho Corporation.
*/
package org.jfree.layouting.input.style.parser.stylehandler.content;
import java.util.ArrayList;
import org.jfree.layouting.input.style.StyleKey;
import org.jfree.layouting.input.style.parser.CSSValueFactory;
import org.jfree.layouting.input.style.parser.CSSValueReadHandler;
import org.jfree.layouting.input.style.values.CSSConstant;
import org.jfree.layouting.input.style.values.CSSNumericType;
import org.jfree.layouting.input.style.values.CSSNumericValue;
import org.jfree.layouting.input.style.values.CSSValue;
import org.jfree.layouting.input.style.values.CSSValueList;
import org.jfree.layouting.input.style.values.CSSValuePair;
import org.w3c.css.sac.LexicalUnit;
/**
* Handles both the counter-increment and the counter-reset
*
* @author Thomas Morgner
*/
public class CounterModificationReadHandler implements CSSValueReadHandler
{
public static final CSSNumericValue ZERO =
CSSNumericValue.createValue(CSSNumericType.NUMBER, 0);
public CounterModificationReadHandler()
{
}
public CSSValue createValue(final StyleKey name, LexicalUnit value)
{
if (value.getLexicalUnitType() != LexicalUnit.SAC_IDENT)
{
return null;
}
final String mayBeNone = value.getStringValue();
if ("none".equalsIgnoreCase(mayBeNone))
{
return new CSSConstant("none");
}
final ArrayList counterSpecs = new ArrayList();
while (value != null)
{
if (value.getLexicalUnitType() != LexicalUnit.SAC_IDENT)
{
return null;
}
final String identifier = value.getStringValue();
value = value.getNextLexicalUnit();
CSSValue counterValue = ZERO;
if (value != null)
{
if (value.getLexicalUnitType() == LexicalUnit.SAC_INTEGER)
{
counterValue = CSSNumericValue.createValue
(CSSNumericType.NUMBER, value.getIntegerValue());
value = value.getNextLexicalUnit();
}
else if (value.getLexicalUnitType() == LexicalUnit.SAC_ATTR)
{
counterValue = CSSValueFactory.parseAttrFunction(value);
value = value.getNextLexicalUnit();
}
else if (CSSValueFactory.isFunctionValue(value))
{
counterValue = CSSValueFactory.parseFunction(value);
value = value.getNextLexicalUnit();
}
}
counterSpecs.add(new CSSValuePair
(new CSSConstant(identifier), counterValue));
}
return new CSSValueList(counterSpecs);
}
}
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