Spring Framework example source code file (CheckboxesTag.java)

This example Spring Framework source code file (CheckboxesTag.java) is included in the DevDaily.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" ^TM.

Java - Spring Framework tags/keywords

abstractmulticheckedelementtag, abstractmulticheckedelementtag, checkboxestag, checkboxestag, eval_page, eval_page, http, jspexception, servlet, string, string

The Spring Framework CheckboxesTag.java source code

/*
 * Copyright 2002-2008 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;

import org.springframework.web.bind.WebDataBinder;

/**
 * Databinding-aware JSP tag for rendering multiple HTML '<code>input'
 * elements with a '<code>type' of 'checkbox'.
 *
 * <p>Intended to be used with a Collection as the {@link #getItems()} bound value}.
 *
 * @author Thomas Risberg
 * @author Juergen Hoeller
 * @author Mark Fisher
 * @since 2.5
 */
public class CheckboxesTag extends AbstractMultiCheckedElementTag {

	protected int writeTagContent(TagWriter tagWriter) throws JspException {
		super.writeTagContent(tagWriter);

		if (!isDisabled()) {
			// Write out the 'field was present' marker.
			tagWriter.startTag("input");
			tagWriter.writeAttribute("type", "hidden");
			tagWriter.writeAttribute("name", WebDataBinder.DEFAULT_FIELD_MARKER_PREFIX + getName());
			tagWriter.writeAttribute("value", "on");
			tagWriter.endTag();
		}

		return EVAL_PAGE;
	}

	protected String getInputType() {
		return "checkbox";
	}

}