API	Package	Subpackage	Class	Method	Reference	Last reviewed	Doc status
Home	Joomla.Framework	Base	JObserver	__construct	__construct()	Never	Work in Progress

This is the class constructor. It performs two function: first, it registers itself with the subject so that the subject knows to notify this observer. Second, it sets up the subject property so that this object can reference the subject it is observing.

JObserver __construct ( &$subject )

The JEventDispatcher::register function instantiates a JObserver class (or subclass) by passing itself to the JObserver constructor:

$this->attach(new $handler($this));