package org.jruby.demo;
import java.awt.BorderLayout;
import java.awt.Color;
import java.awt.Font;
import java.awt.GraphicsEnvironment;
import java.awt.Insets;
import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;
import java.io.PrintStream;
import java.util.ArrayList;
import java.util.Arrays;
import javax.swing.BorderFactory;
import javax.swing.JEditorPane;
import javax.swing.JFrame;
import javax.swing.JScrollPane;
import javax.swing.JTextPane;
import org.jruby.Ruby;
import org.jruby.RubyInstanceConfig;
import org.jruby.internal.runtime.ValueAccessor;
public class IRBConsole extends JFrame {
public IRBConsole(String title) {
super(title);
}
public static void main(final String[] args) {
final IRBConsole console = new IRBConsole("JRuby IRB Console");
console.getContentPane().setLayout(new BorderLayout());
console.setSize(700, 600);
JEditorPane text = new JTextPane();
text.setMargin(new Insets(8,8,8,8));
text.setCaretColor(new Color(0xa4, 0x00, 0x00));
text.setBackground(new Color(0xf2, 0xf2, 0xf2));
text.setForeground(new Color(0xa4, 0x00, 0x00));
Font font = console.findFont("Monospaced", Font.PLAIN, 14,
new String[] {"Monaco", "Andale Mono"});
text.setFont(font);
JScrollPane pane = new JScrollPane();
pane.setViewportView(text);
pane.setBorder(BorderFactory.createLineBorder(Color.darkGray));
console.getContentPane().add(pane);
console.validate();
final TextAreaReadline tar = new TextAreaReadline(text, " Welcome to the JRuby IRB Console \n\n");
console.addWindowListener(new WindowAdapter() {
public void windowClosing(WindowEvent e) {
tar.shutdown();
}
});
final RubyInstanceConfig config = new RubyInstanceConfig() {{
setInput(tar.getInputStream());
setOutput(new PrintStream(tar.getOutputStream()));
setError(new PrintStream(tar.getOutputStream()));
setObjectSpaceEnabled(true); // useful for code completion inside the IRB
setArgv(args);
}};
final Ruby runtime = Ruby.newInstance(config);
runtime.getGlobalVariables().defineReadonly("$$", new ValueAccessor(runtime.newFixnum(System.identityHashCode(runtime))));
runtime.getLoadService().init(new ArrayList());
tar.hookIntoRuntime(runtime);
Thread t2 = new Thread() {
public void run() {
console.setVisible(true);
runtime.evalScriptlet("require 'irb'; require 'irb/completion'; IRB.start");
}
};
t2.start();
try {
t2.join();
} catch (InterruptedException ie) {
// ignore
}
System.exit(0);
}
private Font findFont(String otherwise, int style, int size, String[] families) {
String[] fonts = GraphicsEnvironment.getLocalGraphicsEnvironment().getAvailableFontFamilyNames();
Arrays.sort(fonts);
Font font = null;
for (int i = 0; i < families.length; i++) {
if (Arrays.binarySearch(fonts, families[i]) >= 0) {
font = new Font(families[i], style, size);
break;
}
}
if (font == null)
font = new Font(otherwise, style, size);
return font;
}
/**
*
*/
private static final long serialVersionUID = 3746242973444417387L;
}