Introduction

Introduction – Introduction to Event_Dispatcher

Introduction to Event_Dispatcher

Event_Dispatcher acts as a notification dispatch table. It is used to notify other objects of interesting things. This information is encapsulated in Event_Notification objects.

Client objects register themselves with the Event_Dispatcher as observers of specific notifications posted by other objects. When an event occurs, an object posts an appropriate notification to the Event_Dispatcher. The Event_Dispatcher dispatches a message to each registered observer, passing the notification as the sole argument.

Event_Dispatchers allows you to use event bubbling similar to JavaScript's event management. If an event is not handled by the dispatcher that triggered the event, it may bubble up to the next dispatcher.

Event_Dispatcher (Previous) Examples for the usage of Event_Dispatcher (Next)
Last updated: Thu, 27 Nov 2014 — Download Documentation
Do you think that something on this page is wrong? Please file a bug report or add a note.
View this page in:

User Notes:

There are no user contributed notes for this page.