6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
|
# File 'lib/freightrain/signals/signal_host.rb', line 6
def self.extended(klass)
klass.class_eval do
def fire(signal, *args)
@signals[signal.to_sym].fire(*args)
end
def signals
return @signals
end
def create_signals
@signals = {}
signals = self.class.instance_variable_get(:@signals)
signals ||= {}
signals.keys.each do |signal|
create_forward_method(signals[signal][:forwards], signal) if signals[signal]
@signals[signal] = FreightSignal.new
end
end
def create_forward_method(target_description, signal)
target = target_description.split(".")[0]
event = target_description.split(".")[1]
self.class.send(:define_method, "#{target}_on_#{event}") do
fire signal.to_sym
end
end
def hook_to_signals(host, prefix = nil)
@signals.each do |signal_key, signal|
method_name = "on_#{signal_key}"
method_name = "#{prefix}_#{method_name}" if prefix
signal.connect(host.method(method_name)) if host.respond_to?(method_name)
end
end
end
end
|