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A library adding code completion and other advanced features for Java, JavaScript, Perl, and other languages to RSyntaxTextArea.
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/*
 * 03/21/2010
 *
 * Copyright (C) 2010 Robert Futrell
 * robert_futrell at users.sourceforge.net
 * http://fifesoft.com/rsyntaxtextarea
 *
 * This library is distributed under a modified BSD license.  See the included
 * RSTALanguageSupport.License.txt file for details.
 */
package org.fife.rsta.ac.demo;

import java.io.BufferedReader;
import java.io.File;
import java.io.FileReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.net.URL;
import javax.swing.*;
import javax.swing.UIManager.LookAndFeelInfo;
import javax.swing.event.*;
import javax.swing.tree.TreeNode;

import org.fife.rsta.ac.AbstractSourceTree;
import org.fife.rsta.ac.LanguageSupport;
import org.fife.rsta.ac.LanguageSupportFactory;
import org.fife.rsta.ac.java.JavaLanguageSupport;
import org.fife.rsta.ac.java.tree.JavaOutlineTree;
import org.fife.rsta.ac.js.tree.JavaScriptOutlineTree;
import org.fife.rsta.ac.xml.tree.XmlOutlineTree;
import org.fife.ui.rsyntaxtextarea.SyntaxConstants;
import org.fife.ui.rsyntaxtextarea.RSyntaxTextArea;
import org.fife.ui.rtextarea.RTextScrollPane;


/**
 * The root pane used by the demos.  This allows both the applet and the
 * stand-alone application to share the same UI. 
 *
 * @author Robert Futrell
 * @version 1.0
 */
class DemoRootPane extends JRootPane implements HyperlinkListener,
							SyntaxConstants, Actions {

	private JScrollPane treeSP;
	private AbstractSourceTree tree;
	private RTextScrollPane scrollPane;
	private RSyntaxTextArea textArea;


	public DemoRootPane() {

		LanguageSupportFactory lsf = LanguageSupportFactory.get();
		LanguageSupport support = lsf.getSupportFor(SYNTAX_STYLE_JAVA);
		JavaLanguageSupport jls = (JavaLanguageSupport)support;
		// TODO: This API will change!  It will be easier to do per-editor
		// changes to the build path.
		try {
			jls.getJarManager().addCurrentJreClassFileSource();
			//jsls.getJarManager().addClassFileSource(ji);
		} catch (IOException ioe) {
			ioe.printStackTrace();
		}
		

		textArea = createTextArea();
		setText("CExample.txt", SYNTAX_STYLE_C);
		scrollPane = new RTextScrollPane(textArea, true);
		scrollPane.setIconRowHeaderEnabled(true);
		scrollPane.getGutter().setBookmarkingEnabled(true);

		// Dummy tree keeps JViewport's "background" looking right initially
		JTree dummy = new JTree((TreeNode)null);
		treeSP = new JScrollPane(dummy);

		final JSplitPane sp = new JSplitPane(JSplitPane.HORIZONTAL_SPLIT,
										treeSP, scrollPane);
		SwingUtilities.invokeLater(new Runnable() {
			public void run() {
				sp.setDividerLocation(0.25);
			}
		});
		sp.setContinuousLayout(true);
		setContentPane(sp);

		setJMenuBar(createMenuBar());

	}


	private void addItem(Action a, ButtonGroup bg, JMenu menu) {
		JRadioButtonMenuItem item = new JRadioButtonMenuItem(a);
		bg.add(item);
		menu.add(item);
	}


	private JMenuBar createMenuBar() {

		JMenuBar mb = new JMenuBar();

		JMenu menu = new JMenu("File");
		menu.add(new JMenuItem(new OpenAction(this)));
		menu.addSeparator();
		menu.add(new JMenuItem(new ExitAction()));
		mb.add(menu);

		menu = new JMenu("Language");
		ButtonGroup bg = new ButtonGroup();
		addItem(new StyleAction(this, "C",          "CExample.txt",      SYNTAX_STYLE_C), bg, menu);
		addItem(new StyleAction(this, "Groovy",     "GroovyExample.txt", SYNTAX_STYLE_GROOVY), bg, menu);
		addItem(new StyleAction(this, "Java",       "JavaExample.txt",   SYNTAX_STYLE_JAVA), bg, menu);
		addItem(new StyleAction(this, "JavaScript", "JSExample.txt",     SYNTAX_STYLE_JAVASCRIPT), bg, menu);
		addItem(new StyleAction(this, "JSP",        "JspExample.txt",    SYNTAX_STYLE_JSP), bg, menu);
		addItem(new StyleAction(this, "Perl",       "PerlExample.txt",   SYNTAX_STYLE_PERL), bg, menu);
		addItem(new StyleAction(this, "HTML",       "HtmlExample.txt",   SYNTAX_STYLE_HTML), bg, menu);
		addItem(new StyleAction(this, "PHP",        "PhpExample.txt",    SYNTAX_STYLE_PHP), bg, menu);
		addItem(new StyleAction(this, "sh",         "ShellExample.txt",  SYNTAX_STYLE_UNIX_SHELL), bg, menu);
		addItem(new StyleAction(this, "XML",        "XMLExample.txt",    SYNTAX_STYLE_XML), bg, menu);
		menu.getItem(0).setSelected(true);
		mb.add(menu);

		menu = new JMenu("LookAndFeel");
		bg = new ButtonGroup();
		LookAndFeelInfo[] infos = UIManager.getInstalledLookAndFeels();
		for (int i=0; i