org.apache.struts2.views.java.simple.RadioHandler Maven / Gradle / Ivy
/*
* 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.views.java.simple;
import com.opensymphony.xwork2.util.ValueStack;
import org.apache.struts2.util.MakeIterator;
import org.apache.struts2.views.java.Attributes;
import org.apache.struts2.views.java.TagGenerator;
import org.apache.commons.lang3.StringUtils;
import java.io.IOException;
import java.util.Iterator;
import java.util.Map;
public class RadioHandler extends AbstractTagHandler implements TagGenerator {
public void generate() throws IOException {
Map params = context.getParameters();
Object listObj = params.get("list");
String listKey = (String) params.get("listKey");
String listValue = (String) params.get("listValue");
int cnt = 0;
ValueStack stack = this.context.getStack();
if (listObj != null) {
Iterator itt = MakeIterator.convert(listObj);
while (itt.hasNext()) {
Object item = itt.next();
stack.push(item);
// key
Object itemKey = findValue(listKey != null ? listKey : "top");
String itemKeyStr = StringUtils
.defaultString(itemKey == null ? null : itemKey
.toString());
// value
Object itemValue = findValue(listValue != null ? listValue
: "top");
String itemValueStr = StringUtils
.defaultString(itemValue == null ? null : itemValue
.toString());
// Radio button section
String id = params.get("id") + Integer.toString(cnt++);
Attributes a = new Attributes();
a.add("type", "radio")
.addDefaultToEmpty("name", params.get("name"))
.addIfTrue("checked", isChecked(params, itemKeyStr))
.addIfExists("value", itemKeyStr)
.addIfTrue("disabled", params.get("disabled"))
.addIfExists("tabindex", params.get("tabindex"))
.addIfExists("id", id);
super.start("input", a);
super.end("input");
// Label section
a = new Attributes();
a.addIfExists("for", id)
.addIfExists("class", params.get("cssClass"))
.addIfExists("style", params.get("cssStyle"))
.addIfExists("title", params.get("title"));
super.start("label", a);
if (StringUtils.isNotEmpty(itemValueStr)) {
characters(itemValueStr);
}
super.end("label");
stack.pop();
}
}
}
/**
* It's set to true if the nameValue (the value associated with the name
* which is typically set in the action is equal to the current key value.
*
* @param params
* the params
*
* @param itemKeyStr
* the item key str
*
* @return the boolean
*/
private Boolean isChecked(Map params, String itemKeyStr) {
Boolean checked = false;
if (itemKeyStr != null) {
// NameValue are the values that is provided by the name property
// in the action
Object nameValue = params.get("nameValue");
if (nameValue != null) {
Iterator itt = MakeIterator.convert(nameValue);
while (itt.hasNext()) {
String value = itt.next().toString();
if (checked = value.equalsIgnoreCase(itemKeyStr)) {
break;
}
}
}
}
return checked;
}
}