Event

Events

####Overview

This is a simple event system I wrote for a UI system. Event Dispatchers can be listened to for specific events, or all events. One can listen for an event by calling addEventListener, like BatchProcess does in the Process samples:

addEventListener(ProcessEvent::PROCESS_ENDED,      // Listen for the process ended event
                this,                              // bind to this object's handleProcessEnded
                &BatchProcess::handleProcessEnded, //    (2 parameters needed for the functor)
                true);                             // after handling the event, automatically remove the listener

This listens for the process ended event, and calls handleProcessEnded when it is fired. The final parameter removes the listener after the dispatch.

####Summaries of the files in this folder

• Event.h/cpp is the base Event class. Simply subclass this to create custom events with parameters.
• EventDispatcher.h/cpp does most of the work. Add/removing listeners. Templated functions simplify functor passing for the callers.
• EventListener.h/cpp are templated functor wrapper classes. Event Dispatcher uses these to store callbacks.
• EventListenerList.h/cpp are just list variants that Event Dispatcher uses to store multiple callbacks.