org.apache.struts2.interceptor.CheckboxInterceptor Maven / Gradle / Ivy
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* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you 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.apache.struts2.interceptor;
import com.opensymphony.xwork2.ActionInvocation;
import com.opensymphony.xwork2.interceptor.AbstractInterceptor;
import org.apache.logging.log4j.LogManager;
import org.apache.logging.log4j.Logger;
import org.apache.struts2.dispatcher.Parameter;
import org.apache.struts2.dispatcher.HttpParameters;
import java.util.HashMap;
import java.util.HashSet;
import java.util.Map;
import java.util.Set;
/**
*
*
* Looks for a hidden identification field that specifies the original value of the checkbox.
* If the checkbox isn't submitted, insert it into the parameters as if it was with the value
* of 'false'.
*
*
*
*
*
* - setUncheckedValue - The default value of an unchecked box can be overridden by setting the 'uncheckedValue' property.
*
*
*
*
*
*
*/
public class CheckboxInterceptor extends AbstractInterceptor {
/** Auto-generated serialization id */
private static final long serialVersionUID = -586878104807229585L;
private String uncheckedValue = Boolean.FALSE.toString();
private static final Logger LOG = LogManager.getLogger(CheckboxInterceptor.class);
public String intercept(ActionInvocation ai) throws Exception {
HttpParameters parameters = ai.getInvocationContext().getParameters();
Map extraParams = new HashMap<>();
Set checkboxParameters = new HashSet<>();
for (Map.Entry parameter : parameters.entrySet()) {
String name = parameter.getKey();
if (name.startsWith("__checkbox_")) {
String checkboxName = name.substring("__checkbox_".length());
Parameter value = parameter.getValue();
checkboxParameters.add(name);
if (value.isMultiple()) {
LOG.debug("Bypassing automatic checkbox detection due to multiple checkboxes of the same name: {}", name);
continue;
}
// is this checkbox checked/submitted?
if (!parameters.contains(checkboxName)) {
// if not, let's be sure to default the value to false
extraParams.put(checkboxName, new Parameter.Request(checkboxName, uncheckedValue));
}
}
}
parameters.remove(checkboxParameters);
ai.getInvocationContext().getParameters().appendAll(extraParams);
return ai.invoke();
}
/**
* Overrides the default value for an unchecked checkbox
*
* @param uncheckedValue The uncheckedValue to set
*/
public void setUncheckedValue(String uncheckedValue) {
this.uncheckedValue = uncheckedValue;
}
}