001/*
002 * Copyright 2002-2018 the original author or authors.
003 *
004 * Licensed under the Apache License, Version 2.0 (the "License");
005 * you may not use this file except in compliance with the License.
006 * You may obtain a copy of the License at
007 *
008 *      https://www.apache.org/licenses/LICENSE-2.0
009 *
010 * Unless required by applicable law or agreed to in writing, software
011 * distributed under the License is distributed on an "AS IS" BASIS,
012 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
013 * See the License for the specific language governing permissions and
014 * limitations under the License.
015 */
016
017package org.springframework.web.servlet.tags.form;
018
019import javax.servlet.jsp.JspException;
020
021import org.springframework.web.bind.WebDataBinder;
022
023/**
024 * Databinding-aware JSP tag for rendering multiple HTML '{@code input}'
025 * elements with a '{@code type}' of '{@code checkbox}'.
026 *
027 * <p>Intended to be used with a Collection as the {@link #getItems()} bound value}.
028 *
029 * @author Thomas Risberg
030 * @author Juergen Hoeller
031 * @author Mark Fisher
032 * @since 2.5
033 */
034@SuppressWarnings("serial")
035public class CheckboxesTag extends AbstractMultiCheckedElementTag {
036
037        @Override
038        protected int writeTagContent(TagWriter tagWriter) throws JspException {
039                super.writeTagContent(tagWriter);
040
041                if (!isDisabled()) {
042                        // Write out the 'field was present' marker.
043                        tagWriter.startTag("input");
044                        tagWriter.writeAttribute("type", "hidden");
045                        String name = WebDataBinder.DEFAULT_FIELD_MARKER_PREFIX + getName();
046                        tagWriter.writeAttribute("name", name);
047                        tagWriter.writeAttribute("value", processFieldValue(name, "on", "hidden"));
048                        tagWriter.endTag();
049                }
050
051                return SKIP_BODY;
052        }
053
054        @Override
055        protected String getInputType() {
056                return "checkbox";
057        }
058
059}