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Groovy example source code file (CompoundBorderFactory.groovy)

This example Groovy source code file (CompoundBorderFactory.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

border, border, compoundborder, compoundborder, compoundborderfactory, gui, list, map, object, object, runtimeexception, runtimeexception, swing, swingborderfactory

The Groovy CompoundBorderFactory.groovy source code

 * Copyright 2007 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,
 * See the License for the specific language governing permissions and
 * limitations under the License.

package groovy.swing.factory

import javax.swing.border.Border
import javax.swing.border.CompoundBorder

class CompoundBorderFactory extends SwingBorderFactory {

    public Object newInstance(FactoryBuilderSupport builder, Object name, Object value, Map attributes) {
        builder.context.applyBorderToParent = attributes.remove('parent')

        Border border  = null
        if (value instanceof List) {
            switch (value.size()) {
                case 0:
                    throw new RuntimeException("$name does not accept an empty array as an value argument")
                case 1:
                    border = value[0]
                case 2:
                    border = new CompoundBorder(value[0], value[1])
                case 3:
                    border = new CompoundBorder(value[0], value[1])
                    border = value[2..-1].inject(border) {that, it -> new CompoundBorder(that, it) }

        if (!border && attributes) {
            if (value) {
                throw new RuntimeException("$name only accepts an array of borders as a value argument")
            def inner = attributes.remove("inner")
            def outer = attributes.remove("outer")
            if (inner instanceof Border && outer instanceof Border) {
                border = new CompoundBorder(outer, inner)

        if (!border) {
            throw new RuntimeException("$name only accepts an array of javax.swing.border.Border or an inner: and outer: attribute")

        return border

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