Search code examples
javaattributesstylesjtextpane

style="display: none" attribute not working in JTextPane

I am working on creating an html editor in java using JTextPane. The attribute style = "display: none" doesn't seem to be working here as expected. Help me out here. My code is:

JTextPane basePane = new JTextPane(); 
basePane.setEditorKit(JEditorPane.createEditorKitForContentType("text/html"));
basePane.setContentType("text/html");
basePane.setText("<html><body><p style=\"display: none\" >hello world!</p></body></html>");

the string "hello world!" is still being printed. I tried using the div tags and placed the style="display: none" attribute there. it does not work there too. Help me out here!

Thanks in advance! ;)

Solution

  • I think that you need to create your own view if you want to implement this. The support for CSS in JTextPane is very partial.

    Try something like this:

        //Create a view that inherites from InlineView and behave the way you want.
    //In your case, it should react to getAttributes().getAttribute(CSS.Attribute.DISPLAY);
    private class HideableView extends InlineView {
        public HideableView(Element elem) { super(elem); }
        //Implement your expected behaviour here
        @Override
        public void paint(Graphics g, Shape a){}
    }


    //Create a View Factory that will replace InlineViews by your custom View
    public static class HTMLBetterFactory extends HTMLEditorKit.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 == HTML.Tag.CONTENT) {
                if(attrs.getAttribute(CSS.Attribute.DISPLAY).toString().equals("none"))
                      return new HideableView(elem);
            }
            return super.create(elem);
        }
    }


//Create an HTMLEditorKit that will use your custom Factory
public class HTMLBetterEditorKit extends HTMLEditorKit {

    private final HTMLEditorKit.HTMLFactory factory = new HTMLBetterFactory();
        @Override
        public ViewFactory getViewFactory() {
            return factory;
        }
    }
}

//Import your HTMLEditorKit into your JTextPane
HTMLBetterEditorKit editorKit = new HTMLBetterEditorKit();
myJTextPane.setEditorKit(editorKit);

    This is for inline elements, but you can reproduce the process for other elements.