Main.java Source code

Introduction

Here is the source code for Main.java
Source

import java.awt.BorderLayout;
import java.awt.Dimension;

import javax.swing.JEditorPane;
import javax.swing.JScrollPane;
import javax.swing.text.AbstractDocument;
import javax.swing.text.AttributeSet;
import javax.swing.text.Element;
import javax.swing.text.StyleConstants;
import javax.swing.text.View;
import javax.swing.text.ViewFactory;
import javax.swing.text.html.HTML;
import javax.swing.text.html.HTMLEditorKit;

public class Main extends javax.swing.JFrame {
    public Main() {
        JEditorPane editorPane = new JEditorPane();
        JScrollPane scrollPane = new JScrollPane();

        this.setPreferredSize(new Dimension(300, 300));
        setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);
        getContentPane().setLayout(new BorderLayout());
        editorPane.setEditorKit(new PreWrapHTMLEditorKit());
        editorPane.setText("" + "<html>" + "<head></head>" + "<body>"
                + "<pre>long text line long text line long text line long text line (two new lines here!)\n\n"
                + "long text line long text line long text line long text line long text line long text line</pre>"
                + "</body>" + "</html>");
        scrollPane.setViewportView(editorPane);
        getContentPane().add(scrollPane);
        pack();
    }

    public static void main(String args[]) {
        new Main().setVisible(true);
    }
}

class PreWrapHTMLEditorKit extends HTMLEditorKit {
    ViewFactory viewFactory = new HTMLFactory() {
        @Override
        public View create(Element elem) {
            AttributeSet attrs = elem.getAttributes();
            Object elementName = attrs.getAttribute(AbstractDocument.ElementNameAttribute);
            Object o = (elementName != null) ? null : attrs.getAttribute(StyleConstants.NameAttribute);
            if (o instanceof HTML.Tag) {
                HTML.Tag kind = (HTML.Tag) o;
                if (kind == HTML.Tag.IMPLIED) {
                    return new javax.swing.text.html.ParagraphView(elem);
                }
            }
            return super.create(elem);
        }
    };

    @Override
    public ViewFactory getViewFactory() {
        return this.viewFactory;
    }
}