/**
* Copyright 2005-2016 hdiv.org
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.hdiv.taglib.nested.html;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.jsp.JspException;
import org.apache.struts.taglib.nested.NestedNameSupport;
import org.apache.struts.taglib.nested.NestedPropertyHelper;
import org.hdiv.taglib.html.LinkTagHDIV;
/**
* <p>
* This tag is an extension of the <code><html:link></code> tag.
* </p>
*
* @author Gorka Vicente
* @see org.hdiv.taglib.html.LinkTagHDIV
*/
public class NestedLinkTagHDIV extends LinkTagHDIV implements NestedNameSupport {
/**
* Universal version identifier. Deserialization uses this number to ensure that a loaded class corresponds exactly to a serialized
* object.
*/
private static final long serialVersionUID = 5398511484328451925L;
/* hold original property */
private String origName = null;
private String origProperty = null;
private String origParamProperty = null;
/**
* Overriding method of the heart of the matter. Gets the relative property and leaves the rest up to the original tag implementation.
* Sweet.
* @return int JSP continuation directive. This is in the hands of the super class.
*/
public int doStartTag() throws JspException {
origName = super.getName();
origProperty = super.getProperty();
origParamProperty = super.getParamProperty();
/* decide the incoming options. Always two there are */
boolean doProperty = (origProperty != null && origProperty.length() > 0);
boolean doParam = (origParamProperty != null && origParamProperty.length() > 0);
// request
HttpServletRequest request = (HttpServletRequest) pageContext.getRequest();
boolean hasName = (getName() != null && getName().trim().length() > 0);
String currentName;
if (hasName) {
currentName = getName();
}
else {
currentName = NestedPropertyHelper.getCurrentName(request, this);
}
// set the bean name
super.setName(currentName);
// set property details
if (doProperty && !hasName) {
super.setProperty(NestedPropertyHelper.getAdjustedProperty(request, origProperty));
}
// do the param property details
if (doParam) {
super.setName(null);
super.setParamName(currentName);
super.setParamProperty(NestedPropertyHelper.getAdjustedProperty(request, origParamProperty));
}
/* do the tag */
return super.doStartTag();
}
/**
* Complete the processing of the tag. The nested tags here will restore all the original value for the tag itself and the nesting
* context.
* @return int to describe the next step for the JSP processor
* @throws JspException for the bad things JSP's do
*/
public int doEndTag() throws JspException {
// do the super's ending part
int i = super.doEndTag();
// reset the properties
setName(origName);
setProperty(origProperty);
setParamProperty(origParamProperty);
// continue
return i;
}
/**
* Release the tag's resources and reset the values.
*/
public void release() {
super.release();
// reset the originals
origName = null;
origProperty = null;
origParamProperty = null;
}
}