Groovy example source code file (ListFactory.groovy)

This example Groovy source code file (ListFactory.groovy) is included in the DevDaily.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" ^TM.

Java - Groovy tags/keywords

abstractfactory, collection, gui, illegalaccessexception, instantiationexception, jlist, jlist, list, list, listfactory, map, object, object, swing, vector, vector

The Groovy ListFactory.groovy source code

/*
 * Copyright 2003-2008 the original author or authors.
 *
 * Licensed 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

import javax.swing.JList
import groovy.swing.binding.JListMetaMethods

/**
 * Create a JList, and handle the optional items attribute.
 *
 * @author HuberB1
 */
public class ListFactory extends AbstractFactory {

    public Object newInstance(FactoryBuilderSupport builder, Object name, Object value, Map attributes) throws InstantiationException, IllegalAccessException {
        // FactoryBuilderSupport.checkValueIsType(value, name, JList)

        JList list
        Object items = attributes.get("items")

        if (items instanceof Vector) {
            list = new JList(attributes.remove("items"))
        } else if (items instanceof List) {
            List l = (List) attributes.remove("items")
            list = new JList(l.toArray())
        } else if (items instanceof Object[]) {
            list = new JList(attributes.remove("items"))
        } else if (value instanceof JList) {
            list = value
        } else if (value instanceof Vector) {
            list = new JList(value)
        } else if (value instanceof List) {
            List l = (List) value
            list = new JList(l.toArray())
        } else if (value instanceof Object[]) {
            list = new JList(value)
        } else {
            list = new JList()
        }

        JListMetaMethods.enhanceMetaClass(list)
        return list
    }

    public boolean onHandleNodeAttributes(FactoryBuilderSupport builder, Object node, Map attributes) {
        if (attributes.containsKey("listData")) {
            def listData = attributes.remove("listData")
            if (listData instanceof Vector || listData instanceof Object[]) {
                node.listData = listData
            } else if (listData instanceof Collection) {
                node.listData = listData.toArray()
            } else {
                // allow any iterable ??
                node.listData = listData.collect([]){it} as Object[]
            }
        }
        return true
    }
}