/*!
* 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.border;
import java.util.ArrayList;
import org.pentaho.reporting.libraries.css.keys.border.BackgroundSize;
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.CSSAutoValue;
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.w3c.css.sac.LexicalUnit;
/**
* Creation-Date: 26.11.2005, 18:29:10
*
* @author Thomas Morgner
*/
public class BackgroundSizeReadHandler implements CSSValueReadHandler
{
public BackgroundSizeReadHandler()
{
}
private CSSValueList createList(final CSSValue first,
final CSSValue second,
final CSSValue third)
{
return new CSSValueList(new CSSValue[]{first, second, third});
}
public CSSValue createValue(StyleKey name, LexicalUnit value)
{
ArrayList values = new ArrayList();
while (value != null)
{
CSSValue firstValue;
if (value.getLexicalUnitType() == LexicalUnit.SAC_IDENT)
{
if (value.getStringValue().equalsIgnoreCase("round"))
{
values.add(createList(CSSAutoValue.getInstance(),
CSSAutoValue.getInstance(),
BackgroundSize.ROUND));
value = CSSValueFactory.parseComma(value);
continue;
}
if (value.getStringValue().equalsIgnoreCase("auto"))
{
firstValue = CSSAutoValue.getInstance();
}
else
{
return null;
}
}
else if (value.getLexicalUnitType() == LexicalUnit.SAC_PERCENTAGE)
{
firstValue = CSSNumericValue.createValue(CSSNumericType.PERCENTAGE, value.getFloatValue());
}
else
{
firstValue = CSSValueFactory.createLengthValue(value);
if (firstValue == null)
{
return null;
}
}
value = value.getNextLexicalUnit();
if (value == null)
{
values.add(createList(firstValue,
CSSAutoValue.getInstance(),
BackgroundSize.ROUND));
continue;
}
CSSValue secondValue;
if (value.getLexicalUnitType() == LexicalUnit.SAC_IDENT)
{
if (value.getStringValue().equalsIgnoreCase("round"))
{
values.add(createList(firstValue,
CSSAutoValue.getInstance(),
BackgroundSize.ROUND));
value = CSSValueFactory.parseComma(value);
continue;
}
else if (value.getStringValue().equalsIgnoreCase("auto"))
{
secondValue = CSSAutoValue.getInstance();
}
else
{
return null;
}
}
else if (value.getLexicalUnitType() == LexicalUnit.SAC_OPERATOR_COMMA)
{
values.add(createList(firstValue,
CSSAutoValue.getInstance(),
BackgroundSize.ROUND));
value = value.getNextLexicalUnit();
continue;
}
else if (value.getLexicalUnitType() == LexicalUnit.SAC_PERCENTAGE)
{
secondValue = CSSNumericValue.createValue(CSSNumericType.PERCENTAGE, value.getFloatValue());
}
else
{
secondValue = CSSValueFactory.createLengthValue(value);
if (secondValue == null)
{
return null;
}
}
value = value.getNextLexicalUnit();
if (value == null)
{
values.add(createList(firstValue,
secondValue,
BackgroundSize.NO_ROUND));
}
else if (value.getLexicalUnitType() == LexicalUnit.SAC_OPERATOR_COMMA)
{
values.add(createList(firstValue,
secondValue,
BackgroundSize.NO_ROUND));
value = value.getNextLexicalUnit();
}
else if (value.getLexicalUnitType() == LexicalUnit.SAC_IDENT)
{
if (value.getStringValue().equalsIgnoreCase("round") == false)
{
return null;
}
values.add(createList(firstValue,
secondValue,
BackgroundSize.ROUND));
value = CSSValueFactory.parseComma(value);
}
else
{
return null;
}
}
return new CSSValueList(values);
}
}