Hook Class Reference

Description

Simple hook mechanism to dispatch events.

Reason for using this simple mechanism rather than a big event dispather/listener infrastructure is to minimize overhead, especially when there are no listeners registered (the Reference class is used in way too many instances).

Tip: Lazy init a private hook in a public getter. Then check for null before emitting the event.

Public Member Functions
	addListener ($callback)
	Add event listener. More...
	removeListener ($index)
	Remove event listener identified by the index returned from add(). More...
	getListeners ()
	Get list of all registered listeners. More...
	emit (...$args)
	Call all registered callbacks when event happens. More...

Member Function Documentation

addListener

(

$callback

)

Add event listener.

removeListener

(

$index

)

Remove event listener identified by the index returned from add().

getListeners

(

)

Get list of all registered listeners.

emit

(

$args

)

Call all registered callbacks when event happens.