How to Add Syntax Coloring for XML in the Lobo Java Web Browser

Jose, thanks, you've answered all my questions. Can you just explain a bit more about the title? I wondered about that. What's the other method I can use? A small code snippet on this point would be very helpful. About the licensing -- I thought about that too and will try to find out what the situation is exactly in terms of Batik licensing. By the way, can you tell me exactly where the repository is where I can get all the Lobo browser sources? I'd like to download all the sources and take a look at them. Thanks for your interest in my experiments and thanks also for the browser itself.

Geertjan,

 I tried to set a custom font on the editor pane and i don't see it being applied. This is how i load that font:

            URL fontURL = classLoader.getResource("resource/VeraMono.ttf");
            InputStream streamFont = fontURL.openStream();
            Font font = Font.createFont(Font.TRUETYPE_FONT, streamFont);
            font = font.deriveFont(13.0f);

Can you try it on your machine? The font is available at http://ftp.gnome.org/pub/GNOME/sources/ttf-bitstream-vera/1.10/

Thanks
Kirill

@Geertjan

There were some improvement to the Batik XMLEditor especially in the area of extensibility, Now you can inherit from XMLContext and pass that context into the EditorKit constructor. So you do not need to always modify XMLContext, just inherit it, modify the things you are interested with and pass that into EditorKit constructor.

XMLContext also add new methods for setting syntax coloring during runtime eg:

public void setSyntaxForeground(Map<String,Color> syntaxForegroundMap)

public void setSyntaxFont(Map<String,Font> syntaxFontMap)

 

@Kirill

The font rendering is handled by JEditorPane itself, not in our code, And I think your font loading should works. If it is not working maybe you need to register that font into the GraphicsEnvironment eg:

java.awt.GraphicsEnvironment.registerFont(Font font) // as specified by Java API docs 1.6

 

KIYUT imagine, design, create ... http://www.kiyut.com

Yes I know I know in fact I was talking about integrating Batik inside Lobo to render SVG, if Lobo is relicensed to GPL3 it can include Batik (GPL3 is compatible with Apache 2).

 

  Try to contact with them, migrating to GPL3 is not a radical change.

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Hi- I am just starting to familiarize myself with Lobo and like your explanation for creating plugins that extend the browser's rendering capabilities.I decided to try using JavaEditorKit by Timothy Prinzing at Sun Microsystems.My ExtensionImpl.java looks like this:

package plugin;
import org.lobobrowser.clientlet.Clientlet;
import org.lobobrowser.clientlet.ClientletRequest;
import org.lobobrowser.clientlet.ClientletResponse;
import org.lobobrowser.clientlet.ClientletSelector;
import org.lobobrowser.ua.NavigatorExtension;
import org.lobobrowser.ua.NavigatorExtensionContext;
import org.lobobrowser.ua.NavigatorWindow;

public class ExtensionImpl extends org.lobobrowser.primary.ext.ExtensionImpl {
	private ClientletSelector selector;
	private JavaClientlet javaClient;
	@Override
	public void init(NavigatorExtensionContext ctx) {
        selector = new ClientletSelector() {

            public Clientlet select(ClientletRequest request, ClientletResponse response) {
                if (response.matches("text/java", new String[]{""})) {
                    javaClient = new JavaClientlet();
                    return javaClient;
                }
                return null;
            }

            public Clientlet lastResortSelect(ClientletRequest arg0, ClientletResponse arg1) {
                return null;
            }

    };

        ctx.addClientletSelector(selector);
}
	@Override
	public void destroy() {
		// TODO Auto-generated method stub
		
	}

	@Override
	public void windowClosing(NavigatorWindow arg0) {
		// TODO Auto-generated method stub
		
	}
	@Override
	public void windowOpening(NavigatorWindow arg0) {
		// TODO Auto-generated method stub
		
	}
}

And my clientlet, like this:

package plugin;
import java.awt.Color;
import java.awt.Font;
import java.io.IOException;
import java.io.InputStream;

import javax.swing.JScrollPane;

import jek.JavaEditorKit;
import jek.JavaEditorPane;

import org.lobobrowser.clientlet.Clientlet;
import org.lobobrowser.clientlet.ClientletContext;
import org.lobobrowser.clientlet.ClientletException;
import org.lobobrowser.util.io.IORoutines;

public class JavaClientlet implements Clientlet {
	public void process(ClientletContext context) throws ClientletException {
        try {
            InputStream in = context.getResponse().getInputStream();
            try {
                String text = IORoutines.loadAsText(in, "ISO-8859-1");
                JavaEditorPane jEditorPane = new JavaEditorPane();
                JavaEditorKit editorKit = new JavaEditorKit();
                jEditorPane.setEditorKitForContentType(editorKit.getContentType(),editorKit);
                jEditorPane.setContentType(editorKit.getContentType());
                Font defaultFont = new Font("Monospaced", Font.PLAIN, 12);
                jEditorPane.setFont(defaultFont);
                jEditorPane.setEditable(false);
                jEditorPane.setBackground(Color.WHITE);
                jEditorPane.setText(text);
                JScrollPane pane = new JScrollPane(jEditorPane);
                context.setResultingContent(pane);
            } finally {
                in.close();
            }
        } catch (IOException ioe) {
            throw new ClientletException(ioe);
        }
    }


}

I'm using Eclipse and cannot use the @Override annotation unless the class has a superclass containing the method to override.Which is why I use:

public class ExtensionImpl extends org.lobobrowser.primary.ext.ExtensionImpl

instead of :

public class ExtensionImpl implements NavigatorExtension

At this point I have not been able to make it work. Possibly because I cannot use the @annotation with eclipse in my JavaClientlet class. Any feedback would be welcome.

Nevertheless team building strategies, I found that the plugin I created overwrites, somehow, the clientlet that already handles XML files. And the priority in the properties file has nothing to do with it, because I tried all different levels with the same outcome.