How do I handle priority and propagation in an event system?

Posted by Peeter on Programmers See other posts from Programmers or by Peeter
Published on 2012-03-20T21:54:53Z Indexed on 2012/03/20 23:39 UTC
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Lets say I have a simple event system with the following syntax:

object = new Object();
object.bind("my_trigger", function()  { print "hello"; });
object.bind("my_trigger", function()  { print "hello2"; });
object.trigger("my_trigger");

How could I make sure hello2 is printed out first (I do not want my code to depend on which order the events are binded).

Ontop of that, how would I prevent my events from propagating (e.g. I want to stop every other event from being executed)

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