import com.sun.javafx.css.parser.CSSParser;
import javafx.fxml.FXMLLoader;

import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.StringReader;
import java.net.URI;
import java.net.URL;
import java.net.URLConnection;
import java.net.URLStreamHandler;
import java.net.URLStreamHandlerFactory;
import java.util.Base64;

/**
 * Created by dgrieve on 8/7/14.
 */
public class Main {
    public static void main(String[] args) {

        // parser needs fixing!
        CSSParser.getInstance().parseExpr("foo", "url(data:text/xml,<?xml version=\"1.0\" encoding=\"UTF-8\"?><?import javafx.scene.layout.Region?><Region styleClass=\"graphic\"/>);");

        try {

            URL.setURLStreamHandlerFactory(new URLStreamHandlerFactory() {
                URLStreamHandler streamHandler = new URLStreamHandler() {
                    @Override
                    protected URLConnection openConnection(URL url) throws IOException {
                        return new URLConnection(url) {

                            @Override
                            public void connect() throws IOException {
                            }

                            @Override
                            public InputStream getInputStream() throws IOException {
                                String file = url.getFile();
                                String data = file.substring(file.indexOf(',') + 1);
                                return new ByteArrayInputStream(Base64.getDecoder().decode(data));
                            }

                            @Override
                            public Object getContent() throws IOException {
                                FXMLLoader loader = new FXMLLoader(url);
                                return loader.load();
                            }
                        };
                    }
                };

                @Override
                public URLStreamHandler createURLStreamHandler(String protocol) {
                    if ("data".equals(protocol)) {
                        return streamHandler;
                    }
                    return null;
                }
            });

//                                                                  1         2         3         4         5         6         7
//                                                        01234567890123456789012345678901234567890123456789012345678901234567890
            StringReader stringReader = new StringReader("<?import javafx.scene.layout.Region?><Region styleClass=\"graphic\"/>");

            // encoding to base64 would be done in URLConverter if not already base64
            ByteArrayOutputStream byteArrayOutputStream = new ByteArrayOutputStream();
            int ch = -1;
            while((ch = stringReader.read()) != -1) {
                byteArrayOutputStream.write(ch);
            }
            String s = Base64.getEncoder().encodeToString(byteArrayOutputStream.toByteArray());
            String uriString = "data:text/xml," + s;
            URL url = URI.create(uriString).toURL();

            // for now, getContent would be called from Labeled's handling of applyStyle
            System.err.println(url.getContent());

        } catch (IOException exception ) {
            System.err.println(exception);
            System.exit(-1);
        }

    }

}