/**
* 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.html.RadioTag;
import org.hdiv.dataComposer.IDataComposer;
import org.hdiv.util.HDIVUtil;
/**
* <p>
* Renders an HTML <b><input></b> element of type <b>radio</b>, populated
* from the specified property of the bean associated with our current form. This tag
* is only valid when nested inside a form tag body.
* </p>
* <p>
* If an iterator is used to render a series of radio tags, the idName attribute may
* be used to specify the name of the bean exposed by the iterator. In this case, the
* value attribute is used as the name of a property on the idName bean that returns
* the value of the radio tag in this iteration.
* </p>
*
* @author Gorka Vicente
*/
public class RadioTagHDIV extends RadioTag {
/**
* Universal version identifier. Deserialization uses this number to ensure that
* a loaded class corresponds exactly to a serialized object.
*/
private static final long serialVersionUID = -3271977297872192976L;
private static final Log log = LogFactory.getLog(RadioTagHDIV.class);
/**
* Renders an HTML <input type="radio"> element.
* @param serverValue The data to be used in the tag's <code>value</code>
* attribute and sent to the server when the form is submitted.
* @param checkedValue If the serverValue equals this value the radio button
* will be checked.
* @return A radio input element.
* @throws JspException
* @see org.hdiv.dataComposer.IDataComposer#composeFormField(String, String, boolean, String)
* @since Struts 1.1
*/
protected String renderRadioElement(String serverValue, String checkedValue)
throws JspException {
String cipheredValue = null;
String preparedName = prepareName();
HttpServletRequest request = (HttpServletRequest) this.pageContext.getRequest();
IDataComposer dataComposer = HDIVUtil.getDataComposer(request);
cipheredValue = dataComposer.composeFormField(preparedName, serverValue, false, null);
StringBuffer results = new StringBuffer("<input type=\"radio\"");
renderAttribute(results, "name", preparedName);
renderAttribute(results, "accesskey", accesskey);
renderAttribute(results, "tabindex", tabindex);
renderAttribute(results, "value", cipheredValue);
if (serverValue.equals(checkedValue)) {
results.append(" checked=\"checked\"");
}
results.append(prepareEventHandlers());
results.append(prepareStyles());
results.append(getElementClose());
return results.toString();
}
/**
* Prepares an attribute if the value is not null, appending it to the the given
* StringBuffer.
* @param handlers The StringBuffer that output will be appended to.
*/
protected void renderAttribute(StringBuffer handlers, String name, Object value) {
if (value != null) {
handlers.append(" ");
handlers.append(name);
handlers.append("=\"");
handlers.append(value);
handlers.append("\"");
}
}
}