SynchronousHTMLEditorKit.java

package gui.ava.html.image;

import javax.swing.text.Document;
import javax.swing.text.Element;
import javax.swing.text.View;
import javax.swing.text.ViewFactory;
import javax.swing.text.html.HTMLDocument;
import javax.swing.text.html.HTMLEditorKit;
import javax.swing.text.html.ImageView;

/**
 * @author Yoav Aharoni
 */
public class SynchronousHTMLEditorKit extends HTMLEditorKit {

    @Override
    public Document createDefaultDocument() {
        HTMLDocument doc = (HTMLDocument) super.createDefaultDocument();
        doc.setAsynchronousLoadPriority(-1);
        return doc;
    }

    @Override
    public ViewFactory getViewFactory() {
        return new HTMLFactory() {
            @Override
            public View create(Element elem) {
                View view = super.create(elem);
                if (view instanceof ImageView imageView) {
                    imageView.setLoadsSynchronously(true);
                }
                return view;
            }
        };
    }

}