/*
 *  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 groovy.swing.factory

/**
 * This returns a mutable java.util.Collection of some sort, to which items are added.  
 */
public class CollectionFactory extends AbstractFactory {
    
    public Object newInstance(FactoryBuilderSupport builder, Object name, Object value, Map attributes) throws InstantiationException, IllegalAccessException {
        FactoryBuilderSupport.checkValueIsNull(value, name);
        if (attributes.isEmpty()) {
            return new ArrayList();
        } else {
            def item = attributes.entrySet().iterator().next();
            throw new MissingPropertyException(
                "The builder element '$name' is a collections element and accepts no attributes",
                item.key as String, item.value as Class);
        }
    }

    public void setChild(FactoryBuilderSupport builder, Object parent, Object child) {
        parent.add(child)
    }
}
