/*
 * $Id: AWTStarter.java,v 1.9 2001/09/17 13:29:52 keiron Exp $
 * Copyright (C) 2001 The Apache Software Foundation. All rights reserved.
 * For details on use and redistribution please refer to the
 * LICENSE file included with these sources.
 */

/*
 * originally contributed by
 * Juergen Verwohlt: Juergen.Verwohlt@jCatalog.com,
 * Rainer Steinkuhle: Rainer.Steinkuhle@jCatalog.com,
 * Stanislav Gorkhover: Stanislav.Gorkhover@jCatalog.com
 * Modified to use streaming API by Mark Lillywhite, mark-fop@inomial.com
 */
import org.apache.fop.viewer.*;
import org.apache.fop.render.awt.*;
import org.apache.fop.apps.Driver;
import org.apache.fop.apps.InputHandler;
import org.apache.fop.apps.XSLTInputHandler;

import javax.swing.UIManager;
import java.awt.*;

// SAX
import org.xml.sax.XMLReader;
import org.xml.sax.InputSource;
import org.xml.sax.SAXException;
import org.xml.sax.SAXParseException;

// Java
import java.io.FileReader;
import java.io.File;
import java.io.FileWriter;
import java.io.PrintWriter;
import java.io.IOException;
import java.io.FileNotFoundException;
import java.io.FileInputStream;
import java.io.InputStream;
import java.net.URL;
import java.util.*;



/**
 * initialize AWT previewer
 */
public class AWTStarter {
  //extends CommandLineStarter

    PreviewDialog frame;
    AWTRenderer renderer;
    public static String TRANSLATION_PATH = "/org/apache/fop/viewer/resources/";

    private Translator resource;

    public AWTStarter()
	  throws Exception {

    //## CommandLineOptions commandLineOptions
    //## super(commandLineOptions);
        init();
    }

    private void init() {
      String language = null;
      try {
        language = System.getProperty("user.language");
      } catch(SecurityException se) {
        // if this is running in a secure place
        System.err.println("SecurityError");
        se.printStackTrace();
      }
      resource = getResourceBundle(TRANSLATION_PATH + "resources." + language);
      UserMessage.setTranslator(getResourceBundle(TRANSLATION_PATH + "messages." + language));

      resource.setMissingEmphasized(false);
      renderer = new AWTRenderer(resource);
      frame = createPreviewDialog(renderer, resource);
//      renderer.setProgressListener(frame);
      renderer.setComponent(frame);
    }


    public void run(File xmlfile, File xsltfile) throws Exception {
        Driver driver = new Driver();
        //##driver.setLogger(log);
//        if (errorDump) {
//            driver.setErrorDump(true);
//        }

        // init parser
        frame.progress(resource.getString("Init parser") + " ...");

//      InputHandler inputHandler = new XSLTInputHandler(new File(xmlFile), new File(xslFile));
//      XMLReader parser = inputHandler.getParser();
//#      driver.setOutputStream(new FileOutputStream("lettershop.pdf"));
//      driver.render(parser, inputHandler.getInputSource());

	InputHandler inputHandler = new XSLTInputHandler(xmlfile, xsltfile);

        XMLReader parser = inputHandler.getParser();

        if (parser == null) {
            throw new Exception("Unable to create SAX parser");
        }

        setParserFeatures(parser);

        try {
            driver.setRenderer(renderer);

            // build FO tree: time
            frame.progress(resource.getString("Build FO tree") + " ...");
            driver.render(parser, inputHandler.getInputSource());

            frame.progress(resource.getString("Show"));
            frame.showPage();

        } catch (Exception e) {
            if (e instanceof Exception) {
                throw (Exception)e;
            }
            throw new Exception(e);
        }

    }

    protected PreviewDialog createPreviewDialog(AWTRenderer renderer,
            Translator res) {
        PreviewDialog frame = new PreviewDialog(renderer, res);
        frame.validate();

        // center window
        Dimension screenSize = Toolkit.getDefaultToolkit().getScreenSize();
        Dimension frameSize = frame.getSize();
        if (frameSize.height > screenSize.height)
            frameSize.height = screenSize.height;
        if (frameSize.width > screenSize.width)
            frameSize.width = screenSize.width;
        frame.setLocation((screenSize.width - frameSize.width) / 2,
                          (screenSize.height - frameSize.height) / 2);
        frame.setVisible(true);
        return frame;
    }



    private SecureResourceBundle getResourceBundle(String path) {
        InputStream in = null;

        try {
            URL url = getClass().getResource(path);
            in = url.openStream();
        } catch (Exception ex) {
	    ex.printStackTrace();
            System.err.println("Can't find URL to: <" + path + "> " + ex.getMessage());
        }
        return new SecureResourceBundle(in);
    }

    // setting the parser features
    public void setParserFeatures(XMLReader parser) throws Exception {
        try {
            parser.setFeature("http://xml.org/sax/features/namespace-prefixes", true);
        } catch (SAXException e) {
            throw new Exception("Error: You need a parser which allows the"
                   + " http://xml.org/sax/features/namespace-prefixes"
                   + " feature to be set to true to support namespaces");
        }
    }

}