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Versions: 59
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Contents
# -*- coding: utf-8 -*-
#
# Copyright 2013 whiteleaf. All rights reserved.
#
module Narou::Eventable
EVENTS_CONTAINER = {}
def self.included(base)
super
base.extend(ClassMethods)
EVENTS_CONTAINER[base] = {}
end
class NonBlockError < StandardError; end
module ClassMethods
def add_event_listener(event_name, &block)
raise NonBlockError unless block_given?
stack = EVENTS_CONTAINER[self][event_name] ||= []
stack.push(block)
end
def trigger_event(event_name, *argv)
stack = EVENTS_CONTAINER[self][event_name]
return unless stack
stack.each do |block|
block.call(*argv)
end
end
end
def add_event_listener(event_name, once = false, &block)
raise NonBlockError unless block_given?
@__events_container ||= {}
stack = @__events_container[event_name] ||= []
stack.push([block, once])
end
def remove_event_listener(event_name, &block)
@__events_container ||= {}
if block_given?
events = @__events_container[event_name]
if events
events.reject! do |values|
values[0] == block
end
end
else
@__events_container.delete(event_name)
end
end
def trigger_event(event_name, *argv)
@__events_container ||= {}
stack = @__events_container[event_name]
return unless stack
stack.reject! do |block, once|
block.call(*argv)
once
end
end
alias :on :add_event_listener
alias :off :remove_event_listener
alias :trigger :trigger_event
def one(event_name, &block)
add_event_listener(event_name, true, &block)
end
end
Version data entries
59 entries across 59 versions & 1 rubygems