/**
* Copyright 2005-2013 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.html;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.jsp.JspException;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.apache.struts.taglib.TagUtils;
import org.apache.struts.taglib.html.HiddenTag;
import org.hdiv.dataComposer.IDataComposer;
import org.hdiv.util.HDIVUtil;
/**
* Renders an HTML <b><input></b> element of type hidden, populated from the
* specified value or the specified property of the bean associated with our current
* form. This tag is only valid when nested inside a form tag body.
*
* @author Gorka Vicente
* @see org.apache.struts.taglib.html.HiddenTag
*/
public class HiddenTagHDIV extends HiddenTag {
/**
* Universal version identifier. Deserialization uses this number to ensure that
* a loaded class corresponds exactly to a serialized object.
*/
private static final long serialVersionUID = 8200582308056745466L;
/**
* Commons logging instance
*/
private static final Log log = LogFactory.getLog(HiddenTagHDIV.class);
/**
* Generated encoded value by HDIV composer
*/
private String encodedValue = null;
/**
* Generate the required input tag, followed by the optional rendered text.
* Support for <code>write</code> property since Struts 1.1.
*
* @exception JspException if a JSP exception has occurred
* @see org.hdiv.dataComposer.IDataComposer#composeFormField(String, String, boolean, String)
*/
public int doStartTag() throws JspException {
try {
String hiddenValue = value;
Object lookupValue = null;
if (value == null) {
// locate and return the specified property of the specified bean
lookupValue = TagUtils.getInstance().lookup(pageContext, name, property, null);
if (lookupValue != null) {
hiddenValue = lookupValue.toString();
}
}
HttpServletRequest request = (HttpServletRequest) this.pageContext.getRequest();
IDataComposer dataComposer = HDIVUtil.getDataComposer(request);
this.encodedValue = dataComposer.composeFormField(prepareName(), hiddenValue, false, null);
// Render the result to the output writer
TagUtils.getInstance().write(this.pageContext, this.renderInputElement());
// Is rendering the value separately requested?
if (!write) {
return (EVAL_BODY_TAG);
}
// Calculate the value to be rendered separately
// * @since Struts 1.1
String results = null;
if (value != null) {
results = TagUtils.getInstance().filter(value);
} else {
if (lookupValue == null) {
results = "";
} else {
results = TagUtils.getInstance().filter(lookupValue.toString());
}
}
// Render the result to the output writer
TagUtils.getInstance().write(pageContext, results);
return (EVAL_BODY_TAG);
} catch (JspException e) {
log.debug(e.getMessage());
throw e;
}
}
/**
* Render the value element.
*
* @param results The StringBuffer that output will be appended to.
*/
protected void prepareValue(StringBuffer results) throws JspException {
results.append(" value=\"");
if (this.encodedValue != null) {
results.append(this.formatValue(this.encodedValue));
} else if (redisplay || !"password".equals(type)) {
Object lookupValue = TagUtils.getInstance().lookup(pageContext, name, property, null);
results.append(this.formatValue(lookupValue));
}
results.append("\"");
}
}