ZK - Check if an element has focus

Question

Does ZK support checking if an element has focus?

HtmlBasedComponent has both focus() and setFocus(boolean) to set the focus.. but I don't see any getFocus().

Specifically, I am interested in checking the user's focus on an InputElement, a Bandbox; I want to know if the user is ready to type in the textbox part.

Answer 1

There is no method like isFocus() or getFocus(), but a workaround.
InputElement has two events, onFocus and onBlur

public class MyInputElem extends InputElement{

  private boolean focus = false;

  @Listen("onFocus")
  public void focus(){
    focus = true;
  }

  @Listen("onBlur")
  public void blur(){
    focus = flase;
  }

  public boolean isFocus(){
    return focus;
  }
}

So if you extend from a InputElement like this, it should keep
the focus information up to date.