Eventer is simple engine to control custom class events.

Make a class, and set the allowable events for it. Then create a class instance, and set handler to process an event as a block using 'on_...' method of the class instance, where instead ... put the name of the event. For an each of events, thou canst setup an unlimited number of handlers.

class Test
  events :event
end

t = Test.new

t.on_event do |args|
  "Matched"
end

In order to the event triggers, call 'event' method, that enumerates and calls all settled handlers. The 'event' method will return an Array, with a Hash values. The Hash will contain the pair as seen as the Proc pointer, and a result value.

t.event :event, args... # -> [{<#Proc...> => "Matched"}, ...]

Also, there is the procedure allowing to output the simple result value as an Array with values from each handler.

t.event_rs :event, args... # -> ["Matched", ...]

Thou canst clean up the handlers and even events with the methods 'purge_handlers', and 'purge_events' as follows:

t.on_event do |args|
  "Matched"
end

t.purge_handlers :event
# or:
t.purge_handlers

t.event :event # => []

and events:

t.on_event do |args|
  "Matched"
end

t.purge_events :event

t.event :event # => exception Eventer::UnknownEventError 

Copyright (c) 2011 Malo Skrylevo. See LICENSE for details.