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Versions: 9
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Contents
module BubbleWrap
module Reactor
# A simple mixin that adds events to your object.
module Eventable
# When `event` is triggered the block will execute
# and be passed the arguments that are passed to
# `trigger`.
def on(event, method = nil, &blk)
events = _events_for_key(event)
method_or_block = method ? method : blk
events.push method_or_block
end
# When `event` is triggered, do not call the given
# block any more
def off(event, method = nil, &blk)
events = _events_for_key(event)
if method
events.delete_if { |m| m.receiver == method.receiver and m.name == method.name }
elsif blk
events.delete_if { |b| b == blk }
else
__events__[event] = Array.new
end
blk
end
# Trigger an event
def trigger(event, *args)
blks = _events_for_key(event).clone
blks.map do |blk|
blk.call(*args)
end
end
private
def __events__
@__events__ ||= Hash.new
end
def _events_for_key(event)
__events__[event] ||= Array.new
end
end
end
end
Version data entries
9 entries across 9 versions & 1 rubygems