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Contents
module RubyExt::Observable
def add_observer observer
@observable_observers ||= []
@observable_observers << observer unless @observable_observers.include? observer
end
def notify_observers method, *args
raise "Invalid usage, method must be Symbol or String!" unless method.is_a?(Symbol) or method.is_a?(String)
@observable_observers.each{|observer| observer.respond_to method, *args} if @observable_observers
end
def delete_observer observer
@observable_observers.delete observer if @observable_observers
end
def delete_observers
@observable_observers.clear if @observable_observers
end
def observers_count
@observable_observers ? @observable_observers.size : 0
end
end
Version data entries
14 entries across 14 versions & 1 rubygems