Mixing Elemental2 with GWT Widgets

[Craig Mitchell]

I've switched to use Elemental2 for a few things.  The rest of my app still 
uses the standard GWT widgets.

I can bind directly to the Elemental2 elements from the GWT UI Binder, 
however, if I programatically want to add an Elemental2 element to a GWT 
Widget, there doesn't seem to be a direct way to do this.

Eg: How would you add the Elemental2 HTMLCanvasElement, to a 
GWT SimplePanel using its setWidget method?

To work around this, I created an "Elemental2Widget":

import com.google.gwt.dom.client.Element;
import com.google.gwt.user.client.ui.Widget;
import jsinterop.base.Js;

public class Elemental2Widget<T> extends Widget {
  public Elemental2Widget(T elemental2Widget) {
    Element element = Js.cast(elemental2Widget);
    setElement(element);
  }
  public T getElemental2Widget() {
    return Js.cast(getElement());
  }
}

Now I can call it like this:

simplePanel.setWidget(new Elemental2Widget<>(htmlCanvasElement));

Is this how people mix Elemental2 with GWT widgets?  Or is there a better 
way?

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