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Groovy example source code file (BasicContentPane.groovy)

This example Groovy source code file (BasicContentPane.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, color, dimension, dimension, font, font, fontmetrics, gui, image, monospaced, monospaced, preferences, string, style, style, stylecontext, styleddocument, swing, text, vertical_split

The Groovy BasicContentPane.groovy source code

/*
 * Copyright 2003-2010 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.ui.view

import groovy.ui.ConsoleTextEditor
import groovy.ui.Console
import java.awt.*
import java.awt.image.BufferedImage
import static javax.swing.JSplitPane.VERTICAL_SPLIT
import javax.swing.text.Style
import javax.swing.text.StyleContext
import javax.swing.text.StyledDocument
import java.util.prefs.Preferences
import javax.swing.text.StyleConstants
import javax.swing.WindowConstants
import javax.swing.JSplitPane

def prefs = Preferences.userNodeForPackage(Console)
def detachedOutputFlag = prefs.getBoolean("detachedOutput", false)
outputWindow = frame(visible:false, defaultCloseOperation: WindowConstants.HIDE_ON_CLOSE) {
    blank = glue()
    blank.preferredSize = [0, 0] as Dimension
}
splitPane = splitPane(resizeWeight: 0.5, orientation: VERTICAL_SPLIT) {
    inputEditor = widget(new ConsoleTextEditor(), border:emptyBorder(0))
    buildOutputArea(prefs)
}

private def buildOutputArea(prefs) {
    scrollArea = scrollPane(border: emptyBorder(0)) {
        outputArea = textPane(
                editable: false,
                name: "outputArea",
                contentType: "text/html",
                background: new Color(255, 255, 218),
                font: new Font("Monospaced", Font.PLAIN, prefs.getInt("fontSize", 12)),
                border: emptyBorder(4)
        )
    }
}


inputArea = inputEditor.textEditor
// attach ctrl-enter to input area
// need to wrap in actions to keep it from being added as a component
actions {
    container(inputArea, name: "inputArea", font:new Font("Monospaced", Font.PLAIN, prefs.getInt("fontSize", 12)), border:emptyBorder(4)) {
        action(runAction)
        action(runSelectionAction)
        action(showOutputWindowAction)
    }
    container(outputArea, name: "outputArea") {
        action(hideOutputWindowAction1)
        action(hideOutputWindowAction2)
        action(hideOutputWindowAction3)
        action(hideOutputWindowAction4)
    }
}

// add styles to the output area, should this be moved into SwingBuilder somehow?
outputArea.font = new Font("Monospaced", outputArea.font.style, outputArea.font.size)
StyledDocument doc = outputArea.styledDocument

Style defStyle = StyleContext.defaultStyleContext.getStyle(StyleContext.DEFAULT_STYLE)

def applyStyle = {Style style, values -> values.each{k, v -> style.addAttribute(k, v)}}

Style regular = doc.addStyle("regular", defStyle)
applyStyle(regular, styles.regular)

promptStyle = doc.addStyle("prompt", regular)
applyStyle(promptStyle, styles.prompt)

commandStyle = doc.addStyle("command", regular)
applyStyle(commandStyle, styles.command)

outputStyle = doc.addStyle("output", regular)
applyStyle(outputStyle, styles.output)

resultStyle = doc.addStyle("result", regular)
applyStyle(resultStyle, styles.result)

stacktraceStyle = doc.addStyle("stacktrace", regular)
applyStyle(stacktraceStyle, styles.stacktrace)

hyperlinkStyle = doc.addStyle("hyperlink", regular)
applyStyle(hyperlinkStyle, styles.hyperlink)

// redo styles for editor
doc = inputArea.styledDocument
StyleContext styleContext = StyleContext.defaultStyleContext
styles.each {styleName, defs ->
    Style style = styleContext.getStyle(styleName)
    if (style) {
        applyStyle(style, defs)
        String family = defs[StyleConstants.FontFamily]
        if (style.name == 'default' && family) {
            inputEditor.defaultFamily = family
            inputArea.font = new Font(family, Font.PLAIN, inputArea.font.size)
        }
    }
}

// set the preferred size of the input and output areas
// this is a good enough solution, there are margins and scrollbars and such to worry about for 80x12x2
Graphics g = GraphicsEnvironment.localGraphicsEnvironment.createGraphics (new BufferedImage(100, 100, BufferedImage.TYPE_INT_RGB))
FontMetrics fm = g.getFontMetrics(outputArea.font)

outputArea.preferredSize = [
    prefs.getInt("outputAreaWidth", fm.charWidth(0x77) * 81),
    prefs.getInt("outputAreaHeight", (fm.getHeight() + fm.leading) * 12)
] as Dimension

inputEditor.preferredSize = [
    prefs.getInt("inputAreaWidth", fm.charWidth(0x77) * 81),
    prefs.getInt("inputAreaHeight", (fm.getHeight() + fm.leading) * 12)
] as Dimension

origDividerSize = -1
if (detachedOutputFlag) {
    splitPane.add(blank, JSplitPane.BOTTOM)
    origDividerSize = splitPane.dividerSize
    splitPane.dividerSize = 0
    splitPane.resizeWeight = 1.0
    outputWindow.add(scrollArea, BorderLayout.CENTER)
}

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