getSubject method

PublishSubject? getSubject(Object consumer)

Called internally from Renderer widget only to subscribe to _rendererSubject and start receiving new relative UI States

Declare the consumer class as an argument to protect the function against general use.

This getter will throw an exception if the provided consumer is not of Renderer type.

Implementation

PublishSubject? getSubject(Object consumer) {
  if (consumer is! Renderer) {
    throw 'Illegal action:: Consuming getSubject() inside ${consumer.runtimeType} is forbidden.'
        ' If you\'re trying to add a state use notifyRenderers() instead';
  }
  return _rendererSubject;
}