/*!
* 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) 2002-2013 Pentaho Corporation.. All rights reserved.
*/
package org.pentaho.reporting.libraries.css.parser.stylehandler.content;
import java.util.ArrayList;
import org.pentaho.reporting.libraries.css.model.StyleKey;
import org.pentaho.reporting.libraries.css.parser.CSSValueFactory;
import org.pentaho.reporting.libraries.css.parser.CSSValueReadHandler;
import org.pentaho.reporting.libraries.css.values.CSSConstant;
import org.pentaho.reporting.libraries.css.values.CSSNumericType;
import org.pentaho.reporting.libraries.css.values.CSSNumericValue;
import org.pentaho.reporting.libraries.css.values.CSSValue;
import org.pentaho.reporting.libraries.css.values.CSSValueList;
import org.pentaho.reporting.libraries.css.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(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);
}
}