/* ===============================================================================
*
* Part of the InfoGlue Content Management Platform (www.infoglue.org)
*
* ===============================================================================
*
* Copyright (C)
*
* This program is free software; you can redistribute it and/or modify it under
* the terms of the GNU General Public License version 2, as published by the
* Free Software Foundation. See the file LICENSE.html for more information.
*
* This program is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY, including the implied warranty of MERCHANTABILITY or FITNESS
* FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along with
* this program; if not, write to the Free Software Foundation, Inc. / 59 Temple
* Place, Suite 330 / Boston, MA 02111-1307 / USA.
*
* ===============================================================================
*/
package org.infoglue.cms.util.css;
import java.io.InputStreamReader;
import java.io.Reader;
import java.net.URL;
import java.util.ArrayList;
import java.util.List;
import org.apache.log4j.Logger;
import org.w3c.css.sac.InputSource;
import org.w3c.dom.css.CSSRule;
import org.w3c.dom.css.CSSRuleList;
import org.w3c.dom.css.CSSStyleSheet;
import com.steadystate.css.parser.CSSOMParser;
/**
* @author mattias
*
* This class helps us read and handle CSS-files.
*/
public class CSSHelper
{
private final static Logger logger = Logger.getLogger(CSSHelper.class.getName());
private String cssUrl = null;
public static CSSHelper getHelper()
{
return new CSSHelper();
}
public void setCSSUrl(String url)
{
this.cssUrl = url;
}
public List getCSSRules()
{
List list = new ArrayList();
try
{
Reader r = new InputStreamReader(new URL(this.cssUrl).openStream());
CSSOMParser parser = new CSSOMParser();
InputSource is = new InputSource(r);
CSSStyleSheet stylesheet = parser.parseStyleSheet(is);
CSSRuleList rules = stylesheet.getCssRules();
for (int i = 0; i < rules.getLength(); i++) {
CSSRule rule = rules.item(i);
list.add(rule);
}
}
catch(Exception e)
{
logger.warn("An error occurred when reading css-rules: " + e.getMessage(), e);
}
return list;
}
}