/*
* 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) 2006 - 2013 Pentaho Corporation and Contributors. All rights reserved.
*/
package org.pentaho.reporting.libraries.css.resolver.values.computed.content;
import org.pentaho.reporting.libraries.css.dom.DocumentContext;
import org.pentaho.reporting.libraries.css.dom.LayoutElement;
import org.pentaho.reporting.libraries.css.keys.content.ContentStyleKeys;
import org.pentaho.reporting.libraries.css.model.StyleKey;
import org.pentaho.reporting.libraries.css.resolver.values.ResolveHandler;
import org.pentaho.reporting.libraries.css.values.CSSAttrFunction;
import org.pentaho.reporting.libraries.css.values.CSSNumericValue;
import org.pentaho.reporting.libraries.css.values.CSSValue;
public class CounterIncrementResolveHandler implements ResolveHandler
{
public CounterIncrementResolveHandler()
{
}
/**
* This indirectly defines the resolve order. The higher the order, the more dependent
* is the resolver on other resolvers to be complete.
*
* @return the array of required style keys.
*/
public StyleKey[] getRequiredStyles()
{
return new StyleKey[]{
ContentStyleKeys.COUNTER_RESET,
};
}
/**
* Resolves a single property.
*/
public void resolve(final DocumentContext process,
final LayoutElement element,
final StyleKey key)
{
// todo: We have no counter-management yet
// final CSSValue value = element.getLayoutStyle().getValue(key);
// if (value instanceof CSSValueList == false)
// {
// return; // do nothing.
// }
//
// final CSSValueList valueList = (CSSValueList) value;
// for (int i = 0; i < valueList.getLength(); i++)
// {
// final CSSValue item = valueList.getItem(i);
// if (item instanceof CSSValuePair == false)
// {
// continue;
// }
// final CSSValuePair counter = (CSSValuePair) item;
// final CSSValue counterName = counter.getFirstValue();
// if (counterName instanceof CSSConstant == false)
// {
// continue;
// }
//
// final CSSValue counterValue = counter.getSecondValue();
// final int counterIntValue = parseCounterValue(counterValue, element);
// element.incrementCounter(counterName.getCSSText(), counterIntValue);
// }
}
private int parseCounterValue(final CSSValue rawValue,
final LayoutElement element)
{
if (rawValue instanceof CSSNumericValue)
{
final CSSNumericValue nval = (CSSNumericValue) rawValue;
return (int) nval.getValue();
}
if (rawValue instanceof CSSAttrFunction)
{
final CSSAttrFunction attrFunction = (CSSAttrFunction) rawValue;
final String attrName = attrFunction.getName();
final String attrNamespace = attrFunction.getNamespace();
final Object rawAttribute = element.getAttribute(attrNamespace, attrName);
if (rawAttribute instanceof Number)
{
final Number nAttr = (Number) rawAttribute;
return nAttr.intValue();
}
}
return 0;
}
}