Class AbstractEvent - list of methods

This class implements the base Event object used system-wide to offer orthogonality. Core objects such as Models, Controllers, etc create such events on-the-fly and dispatch them through the application's Dispatcher (colloquially known as the "Joomla! plugin system"). This way a suitable plugin, typically a "system" plugin, can modify the behaviour of any internal class, providing system-wide services such as tags, content versioning, comments or even low-level services such as the implementation of created/modified/locked behaviours, record hit counter etc.
You can create a new Event with something like this: $event = AbstractEvent::create('onModelBeforeSomething', $myModel, $arguments); You can access the subject object from your event Listener using $event['subject']. It is up to your listener to determine whether it should apply its functionality against the subject. This AbstractEvent class implements a mutable event which is allowed to change its arguments at runtime. This is generally unadvisable. It's best to use AbstractImmutableEvent instead and constrict all your interaction to the subject class.