willAttachRenderer method
willAttachRenderer and didAttachRenderer on WidgetElement will be called when this WidgetElement's parent is standard WebF element. If this WidgetElement's parent is another WidgetElement, WebFWidgetElementElement.mount and WebFWidgetElementElement.unmount place the equivalence altitude to the willAttachRenderer and didAttachRenderer.
Implementation
@mustCallSuper
@override
void willAttachRenderer() {
super.willAttachRenderer();
if (renderStyle.display != CSSDisplay.none && attachedAdapter == null) {
attachedAdapter = WebFWidgetElementToWidgetAdapter(child: widget, container: renderBoxModel!, widgetElement: this);
}
}