/*
 * This library is part of OpenCms -
 * the Open Source Content Management System
 *
 * Copyright (c) Alkacon Software GmbH (http://www.alkacon.com)
 *
 * 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.
 *
 * For further information about Alkacon Software GmbH, please see the
 * company website: http://www.alkacon.com
 *
 * For further information about OpenCms, please see the
 * project website: http://www.opencms.org
 * 
 * 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
 */

package org.opencms.workplace.editors;

import org.opencms.file.CmsObject;
import org.opencms.file.CmsPropertyDefinition;
import org.opencms.main.CmsException;
import org.opencms.main.CmsLog;
import org.opencms.util.CmsStringUtil;

import org.apache.commons.logging.Log;

/**
 * A default editor CSS handler to obtain the CSS style sheet path from the template property value of the template itself.<p>
 * 
 * @since 6.9.2 
 */
public class CmsEditorCssHandlerDefault implements I_CmsEditorCssHandler {

    /** The log object for this class. */
    private static final Log LOG = CmsLog.getLog(CmsEditorCssHandlerDefault.class);

    /**
     * @see org.opencms.workplace.editors.I_CmsEditorCssHandler#getUriStyleSheet(org.opencms.file.CmsObject, java.lang.String)
     */
    public String getUriStyleSheet(CmsObject cms, String editedResourcePath) {

        String result = "";
        try {
            // determine the path of the template
            String templatePath = "";
            try {
                templatePath = cms.readPropertyObject(editedResourcePath, CmsPropertyDefinition.PROPERTY_TEMPLATE, true).getValue(
                    "");
            } catch (CmsException e) {
                if (LOG.isWarnEnabled()) {
                    LOG.warn(Messages.get().getBundle().key(Messages.LOG_READ_TEMPLATE_PROP_FAILED_0), e);
                }
            }
            if (CmsStringUtil.isNotEmpty(templatePath)) {
                // read the template property value from the template file where the absolute CSS path is (or should be) stored
                result = cms.readPropertyObject(templatePath, CmsPropertyDefinition.PROPERTY_TEMPLATE, false).getValue(
                    "");
            }
        } catch (CmsException e) {
            if (LOG.isWarnEnabled()) {
                LOG.warn(Messages.get().getBundle().key(Messages.LOG_READ_TEMPLATE_PROP_STYLESHEET_FAILED_0), e);
            }
        }
        return result;
    }

    /**
     * @see org.opencms.workplace.editors.I_CmsEditorCssHandler#matches(org.opencms.file.CmsObject, java.lang.String)
     */
    public boolean matches(CmsObject cms, String editedResourcePath) {

        // this returns always true, as it is the default CSS handler
        return true;
    }

}