/*
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
*
* Copyright 1997-2007 Sun Microsystems, Inc. All rights reserved.
*
* Portions Copyright Apache Software Foundation.
*
* The contents of this file are subject to the terms of either the GNU
* General Public License Version 2 only ("GPL") or the Common Development
* and Distribution License("CDDL") (collectively, the "License"). You
* may not use this file except in compliance with the License. You can obtain
* a copy of the License at https://glassfish.dev.java.net/public/CDDL+GPL.html
* or glassfish/bootstrap/legal/LICENSE.txt. See the License for the specific
* language governing permissions and limitations under the License.
*
* When distributing the software, include this License Header Notice in each
* file and include the License file at glassfish/bootstrap/legal/LICENSE.txt.
* Sun designates this particular file as subject to the "Classpath" exception
* as provided by Sun in the GPL Version 2 section of the License file that
* accompanied this code. If applicable, add the following below the License
* Header, with the fields enclosed by brackets [] replaced by your own
* identifying information: "Portions Copyrighted [year]
* [name of copyright owner]"
*
* Contributor(s):
*
* If you wish your version of this file to be governed by only the CDDL or
* only the GPL Version 2, indicate your decision by adding "[Contributor]
* elects to include this software in this distribution under the [CDDL or GPL
* Version 2] license." If you don't indicate a single choice of license, a
* recipient has the option to distribute your version of this file under
* either the CDDL, the GPL Version 2 or to extend the choice of license to
* its licensees as provided above. However, if you add GPL Version 2 code
* and therefore, elected the GPL Version 2 license, then the option applies
* only if the new code is made subject to such option by the copyright
* holder.
*/
package org.apache.taglibs.standard.tag.common.xml;
import javax.servlet.jsp.JspException;
import javax.servlet.jsp.JspTagException;
import javax.servlet.jsp.tagext.BodyTagSupport;
import javax.servlet.jsp.tagext.Tag;
import org.apache.taglibs.standard.resources.Resources;
/**
* <p>Support for tag handlers for <param>, the XML parameter
* subtag for <transformt<.</p>
*
* @see TransformSupport
* @author Shawn Bayern
*/
public abstract class ParamSupport extends BodyTagSupport {
//*********************************************************************
// Protected state
protected String name; // 'name' attribute
protected Object value; // 'value' attribute
//*********************************************************************
// Constructor and initialization
public ParamSupport() {
super();
init();
}
private void init() {
name = null;
value = null;
}
//*********************************************************************
// Tag logic
// simply send our name and value to our parent <transform> tag
public int doEndTag() throws JspException {
Tag t = findAncestorWithClass(this, TransformSupport.class);
if (t == null)
throw new JspTagException(
Resources.getMessage("PARAM_OUTSIDE_TRANSFORM"));
TransformSupport parent = (TransformSupport) t;
Object value = this.value;
if (value == null) {
if (bodyContent == null || bodyContent.getString() == null)
value = "";
else
value = bodyContent.getString().trim();
}
parent.addParameter(name, value);
return EVAL_PAGE;
}
// Releases any resources we may have (or inherit)
public void release() {
init();
}
}