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Groovy example source code file (BindingExample.groovy)

This example Groovy source code file (BindingExample.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

awt, change, change, enbled, insets, insets, margin, me, me, text, text

The Groovy BindingExample.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,
 * 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.
 */

/**
 * @author <a href="mailto:shemnon@yahoo.com">Danno Ferrin
 * @version $Revision: 11221 $
 * @since Groovy 1.1
 *
 * The real interesting part of this example are in the three properties of button:
 *
 *           text: bind(source:textField, sourceProperty:'text'),
 *           margin: bind(source:slider, sourceProperty:'value', converter:{[it, it, it, it] as Insets}),
 *           enabled: bind(source:checkBox, sourceProperty:'selected')
 *
 * This is where the real magic goes on, causing the button to react to the changes
 * in the source widgets values.
 */

import groovy.swing.SwingBuilder
import java.awt.GridBagConstraints as gb
import java.awt.Insets

sb = SwingBuilder.build() {
    frame = frame(defaultCloseOperation:javax.swing.JFrame.DISPOSE_ON_CLOSE) {
        gridBagLayout()

        label("Text:", anchor:gb.WEST, insets:[6,6,3,3] as Insets)
        textField = textField("Change Me!", fill:gb.HORIZONTAL, gridwidth:gb.REMAINDER, insets:[6,3,3,6] as Insets)

        label("Margin:", anchor:gb.WEST, insets:[3,6,3,3] as Insets)
        slider = slider(value:5, fill:gb.HORIZONTAL, gridwidth:gb.REMAINDER, insets:[3,3,3,6] as Insets)

        panel()
        checkBox = checkBox("Enbled", anchor:gb.WEST, gridwidth:gb.REMAINDER, insets:[3,3,3,6] as Insets)

        separator(fill:gb.HORIZONTAL, gridwidth:gb.REMAINDER)

        button(anchor:gb.CENTER, gridwidth:gb.REMAINDER, gridheight:gb.REMAINDER, weightx:1.0, weighty:1.0, insets:[3,6,6,6] as Insets,
            text: bind(source:textField, sourceProperty:'text'),
            margin: bind(source:slider, sourceProperty:'value', converter:{[it, it, it, it] as Insets}),
            enabled: bind(source:checkBox, sourceProperty:'selected')
        )
    }
}

frame.pack()
frame.setSize(frame.width + 100, frame.height + 200)
frame.show()

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