public void notifyGlasspaneListeners(boolean isShown) {
if (isShown) {
GlassPane.getInstance().show();
} else {
GlassPane.getInstance().hide();
}
}
private void addGlassPaneListener(JavaScriptObject obj) {
GlassPane.getInstance().addGlassPaneListener(new GlassPaneNativeListener(obj));
}