Module: Nuklear::UI::Events

Included in:
Base
Defined in:
lib/nuklear/ui/events.rb

Instance Method Summary collapse

Instance Method Details

#event_listeners_for(event) ⇒ Object 



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# File 'lib/nuklear/ui/events.rb', line 10

def event_listeners_for(event)
  @event_listeners ||= {}
  @event_listeners[event] ||= []
end

#on(*events, &block) ⇒ Object 



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# File 'lib/nuklear/ui/events.rb', line 4

def on(*events, &block)
  events.each do |event|
    event_listeners_for(event) << block
  end
end

#trigger(event) ⇒ Object 



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# File 'lib/nuklear/ui/events.rb', line 15

def trigger(event)
  if event != @last_event # prevent triggering every frame
    event_listeners_for(event).each { |listener| listener.call event }
    @last_event = event
  end
end