org.springframework.web.servlet.tags.form.RadioButtonTag Maven / Gradle / Ivy
/*
* Copyright 2002-2012 the original author or authors.
*
* 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.springframework.web.servlet.tags.form;
import javax.servlet.jsp.JspException;
/**
* Databinding-aware JSP tag for rendering an HTML '{@code input}'
* element with a '{@code type}' of '{@code radio}'.
*
* Rendered elements are marked as 'checked' if the configured
* {@link #setValue(Object) value} matches the {@link #getValue bound value}.
*
*
A typical usage pattern will involved multiple tag instances bound
* to the same property but with different values.
*
* @author Rob Harrop
* @author Juergen Hoeller
* @since 2.0
*/
@SuppressWarnings("serial")
public class RadioButtonTag extends AbstractSingleCheckedElementTag {
@Override
protected void writeTagDetails(TagWriter tagWriter) throws JspException {
tagWriter.writeAttribute("type", getInputType());
Object resolvedValue = evaluate("value", getValue());
renderFromValue(resolvedValue, tagWriter);
}
@Override
protected String getInputType() {
return "radio";
}
}