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• RadioButtonTag.java

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org.springframework.web.servlet.tags.form.RadioButtonTag Maven / Gradle / Ivy

/*
 * Copyright 2002-2018 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
 *
 *      https://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;

/**
 * The {@code } tag renders an HTML 'input' tag with type '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.
 *
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Attribute Summary
Attribute
Required?
Runtime Expression?
Description
accesskey
false
true
HTML Standard Attribute
cssClass
false
true
HTML Optional Attribute
cssErrorClass
false
true
HTML Optional Attribute. Used when the bound field has errors.
cssStyle
false
true
HTML Optional Attribute
dir
false
true
HTML Standard Attribute
disabled
false
true
HTML Optional Attribute. Setting the value of this attribute to 'true'
 * will disable the HTML element.
htmlEscape
false
true
Enable/disable HTML escaping of rendered values.
id
false
true
HTML Standard Attribute
label
false
true
Value to be displayed as part of the tag
lang
false
true
HTML Standard Attribute
onblur
false
true
HTML Event Attribute
onchange
false
true
HTML Event Attribute
onclick
false
true
HTML Event Attribute
ondblclick
false
true
HTML Event Attribute
onfocus
false
true
HTML Event Attribute
onkeydown
false
true
HTML Event Attribute
onkeypress
false
true
HTML Event Attribute
onkeyup
false
true
HTML Event Attribute
onmousedown
false
true
HTML Event Attribute
onmousemove
false
true
HTML Event Attribute
onmouseout
false
true
HTML Event Attribute
onmouseover
false
true
HTML Event Attribute
onmouseup
false
true
HTML Event Attribute
path
true
true
Path to property for data binding
tabindex
false
true
HTML Standard Attribute
title
false
true
HTML Standard Attribute
value
false
true
HTML Optional Attribute
 *
 * @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";
	}

}