Grid FontIconRenderer issue

Is there an option that somone shares FontIconRenderer class that is used on renderer sample?

I tried with below and seems that there is somethiong wrong…

private class FontIconRenderer extends ClickableRenderer {
protected FontIconRenderer() {
// TODO Auto-generated constructor stub

    public FontIconRenderer(RendererClickListener listener) {

    public JsonValue encode(String value) {
        value = FontAwesome.EYE.getHtml();
        return super.encode(value);

You probably need to create client site renderer and connector. Look at ButtonRenderer as an example.

See here:!/thread/9225584/10109123