blobNodeFor static method

BlobNode? blobNodeFor(BuildContext context)

Returns the BlobNode that most closely corresponds to a given BuildContext.

If the context is not a remote widget and has no ancestor remote widget, then this function returns null.

The BlobNode is typically either a WidgetDeclaration (whose WidgetDeclaration.root argument is a ConstructorCall or a Switch that resolves to a ConstructorCall), indicating the BuildContext maps to a remote widget, or a ConstructorCall directly, in the case where it maps to a local widget. Widgets that correspond to render objects (i.e. anything that might be found by hit testing on the screen) are always local widgets.

Implementation

static BlobNode? blobNodeFor(BuildContext context) {
  if (context.widget is! _Widget) {
    context.visitAncestorElements((Element element) {
      if (element.widget is _Widget) {
        context = element;
        return false;
      }
      return true;
    });
  }
  if (context.widget is! _Widget) {
    return null;
  }
  return (context.widget as _Widget).curriedWidget;
}