/*
* 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.jsp;
import javax.servlet.jsp.tagext.TagData;
import javax.servlet.jsp.tagext.TagExtraInfo;
/**
* This is a TagExtraInfo evaluation class that checks the attibutes of
* the <code><cms:include /></code> tag.<p>
*
* @since 6.0.0
*/
public class CmsJspTagIncludeTEI extends TagExtraInfo {
private static final String ATTR_ATTRIBUTE = "attribute";
private static final String ATTR_FILE = "file";
private static final String ATTR_PAGE = "page";
private static final String ATTR_PROPERTY = "property";
private static final String ATTR_SUFFIX = "suffix";
/**
* Returns true if the given attribute name is specified, false otherwise.<p>
*
* @param data the tag data
* @param attributeName the attribute name
* @return true if the given attribute name is specified, false otherwise
*/
public static boolean isSpecified(TagData data, String attributeName) {
return (data.getAttribute(attributeName) != null);
}
/**
* Checks the validity of the <code><cms:include /></code> attributes.<p>
*
* The logic used is:
* <pre>
* if (hasFile && (hasSuffix || hasProperty || hasAttribute)) return false;
* if (hasProperty && hasAttribute) return false;
* if (hasSuffix && !(hasProperty || hasAttribute)) return false;
* </pre>
*
* @param data the tag data
* @return true if attributes are valid, false otherwise
*/
@Override
public boolean isValid(TagData data) {
boolean hasFile = isSpecified(data, ATTR_FILE) || isSpecified(data, ATTR_PAGE);
boolean hasSuffix = isSpecified(data, ATTR_SUFFIX);
boolean hasProperty = isSpecified(data, ATTR_PROPERTY);
boolean hasAttribute = isSpecified(data, ATTR_ATTRIBUTE);
// boolean hasElement = isSpecified(data, C_ATTR_ELEMENT);
if (hasFile && (hasSuffix || hasProperty || hasAttribute)) {
return false;
}
if (hasProperty && hasAttribute) {
return false;
}
if (hasSuffix && !(hasProperty || hasAttribute)) {
return false;
}
return true;
}
}