/*
* $Id: AddListAttributeModel.java 1305937 2012-03-27 18:15:15Z nlebas $
*
* 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.tiles.template;
import java.io.IOException;
import java.util.Deque;
import org.apache.tiles.ListAttribute;
import org.apache.tiles.autotag.core.runtime.ModelBody;
import org.apache.tiles.request.Request;
/**
* <p>
* <strong>Declare a list that will be pass as an attribute. </strong>
* </p>
* <p>
* Declare a list that will be pass as an attribute . List elements are added
* using the tag 'addAttribute' or 'addListAttribute'. This tag can only be used
* inside 'insertTemplate', 'insertDefinition' or 'definition' tag.
* </p>
*
* @version $Rev: 1305937 $ $Date: 2012-03-27 20:15:15 +0200 (Tue, 27 Mar 2012) $
* @since 2.2.0
*/
public class AddListAttributeModel {
/**
* Executes the model.
*
* @param role The comma-separated list of roles that can use the list attribute.
* @param request The request.
* @param modelBody The body.
* @throws IOException If the body cannot be evaluated.
*/
public void execute(String role, Request request, ModelBody modelBody) throws IOException {
Deque<Object> composeStack = ComposeStackUtil.getComposeStack(request);
ListAttribute listAttribute = new ListAttribute();
listAttribute.setRole(role);
composeStack.push(listAttribute);
modelBody.evaluateWithoutWriting();
listAttribute = (ListAttribute) composeStack.pop();
ListAttribute parent = (ListAttribute) composeStack.peek();
parent.add(listAttribute);
}
}