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Groovy example source code file (View.groovy)

This example Groovy source code file (View.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, bean, both, both, east, greet, gui, horizontal, horizontal, javabean, listcellrenderer, login, object, propertychangelistener, remainder, remainder, string, string, swing

The Groovy View.groovy source code

/**
 * Created by IntelliJ IDEA.
 * User: Danno.Ferrin
 * Date: Apr 26, 2008
 * Time: 8:31:21 AM
 */
package swing.greet

import java.awt.Cursor
import java.beans.PropertyChangeListener
import javax.swing.*

lookAndFeel('nimbus', 'mac', ['metal', [boldFonts: false]])

actions() {
    loginAction = action(
        name: 'Login',
        enabled: bind(source: controller, sourceProperty: 'allowLogin'),
        closure: controller.&login
    )

    filterTweets = action(
        name: 'Filter',
        enabled: bind(source: controller, sourceProperty: 'allowSelection'),
        closure: controller.&filterTweets
    )

    userSelected = action(
        name: 'Select User',
        enabled: bind(source: controller, sourceProperty: 'allowSelection'),
        closure: controller.&userSelected
    )

    tweetAction = action(
        name: 'Update',
        enabled: bind(source: controller, sourceProperty: 'allowTweet'),
        closure: controller.&tweet
    )
}

tweetLineFont = new java.awt.Font("Ariel", 0, 12)
tweetLine = panel(border: emptyBorder(3), preferredSize:[250,84]) {
    gridBagLayout()
    tweetIcon = label(verticalTextPosition:SwingConstants.BOTTOM,
        horizontalTextPosition:SwingConstants.CENTER,
        //anchor: BASELINE, insets: [3, 3, 3, 3])
        anchor: CENTER, insets: [3, 3, 3, 3])
    tweetText = textArea(rows: 4, lineWrap: true, wrapStyleWord: true,
        opaque: false, editable: false, font: tweetLineFont,
        gridwidth: REMAINDER, weightx: 1.0, fill: BOTH, insets: [3, 3, 3, 3])
}
tweetRenderer = {list, tweet, index, isSelected, isFocused ->
    if (tweet?.user as String) {
        tweetIcon.icon = controller.api.imageMap[tweet.user.profile_image_url as String]
        tweetIcon.text = tweet.user.screen_name
        tweetText.text = tweet.text
    } else if (tweet?.text as String) {
        tweetIcon.icon = controller.api.imageMap[tweet.parent().profile_image_url as String]
        tweetIcon.text = tweet.parent().screen_name
        tweetText.text = tweet.text
    } else {
        tweetIcon.icon = null
        tweetIcon.text = null
        tweetText.text = null
    }
    tweetLine
} as ListCellRenderer


userCell = label(border: emptyBorder(3))
userCellRenderer = {list, user, index, isSelected, isFocused ->
    if (user) {
        userCell.icon = controller.api.imageMap[user.profile_image_url as String]
        userCell.text = "<html>$user.screen_name
$user.name
$user.location
"
    } else {
        userCell.icon = null
        userCell.text = null
    }
    userCell
} as ListCellRenderer

greetFrame = frame(title: "Greet - A Groovy Twitter Client",
    defaultCloseOperation: javax.swing.JFrame.DISPOSE_ON_CLOSE, size: [320, 480],
    locationByPlatform:true)
{
    panel(cursor: bind(source: controller, sourceProperty: 'allowSelection',
        converter: {it ? null : Cursor.getPredefinedCursor(Cursor.WAIT_CURSOR)})
    ) {

        gridBagLayout()
        users = comboBox(renderer: userCellRenderer, action: userSelected,
            gridwidth: REMAINDER, insets: [6, 6, 3, 6], fill: HORIZONTAL)
        label('Search:', insets: [3, 6, 3, 3])
        searchField = textField(columns: 20, action: filterTweets,
            insets: [3, 3, 3, 3], weightx: 1.0, fill: BOTH)
        button(action: filterTweets,
            gridwidth: REMAINDER, insets: [3, 3, 3, 6], fill:HORIZONTAL)
        tabbedPane(gridwidth: REMAINDER, weighty: 1.0, fill: BOTH) {
            scrollPane(title: 'Timeline') {
                timelineList = list(visibleRowCount: 20, cellRenderer: tweetRenderer)
            }
            scrollPane(title: 'Tweets') {
                tweetList = list(visibleRowCount: 20, cellRenderer: tweetRenderer)
            }
            scrollPane(title: 'Statuses') {
                statusList = list(visibleRowCount: 20, cellRenderer: tweetRenderer)
            }
            // add data change listeners
            [timeline:timelineList, tweets:tweetList, statuses:statusList].each {p, w ->
                controller.addPropertyChangeListener(p,
                    {evt -> w.listData = evt.newValue as Object[]} as PropertyChangeListener
                )
            }
        }
        separator(fill: HORIZONTAL, gridwidth: REMAINDER)
        tweetBox = textField(action:tweetAction,
            fill:BOTH, weightx:1.0, insets:[3,3,3,3], gridwidth:2)
        tweetButton = button(tweetAction,
            enabled:bind(source:tweetBox, sourceProperty:'text', converter:{it.length() < 140}),
            gridwidth:REMAINDER, insets:[3,3,3,3])
        separator(fill: HORIZONTAL, gridwidth: REMAINDER)
        statusLine = label(text: bind(source: controller.api, sourceProperty: 'status'),
            gridwidth: REMAINDER, insets: [3, 6, 3, 6], anchor: WEST
        )
    }


    loginDialog = dialog(
        title: "Login to Greet", pack: true, resizable: false,
        defaultCloseOperation: WindowConstants.DISPOSE_ON_CLOSE,
        locationByPlatform:true)
    {
        panel(border: emptyBorder(3),
            cursor: bind(source: controller, sourceProperty: 'allowLogin',
                converter: {it ? null : Cursor.getPredefinedCursor(Cursor.WAIT_CURSOR)})
        ) {
            gridBagLayout()
            label("Username:",
                anchor: EAST, insets: [3, 3, 3, 3])
            twitterNameField = textField(action:loginAction, columns: 20,
                gridwidth: REMAINDER, insets: [3, 3, 3, 3])
            label("Password:",
                anchor: EAST, insets: [3, 3, 3, 3])
            twitterPasswordField = passwordField(action:loginAction, columns: 20,
                gridwidth: REMAINDER, insets: [3, 3, 3, 3])
            panel()
            button(loginAction, defaultButton: true,
                anchor: EAST, insets: [3, 3, 3, 3])
        }
    }
}

controller.addPropertyChangeListener("friends", {evt ->
    view.edt { users.model = new DefaultComboBoxModel(evt.newValue as Object[]) }
} as PropertyChangeListener)

new Timer(120000, filterTweets).start()

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