Module: CyberarmEngine::Event

Included in:
Element
Defined in:
lib/cyberarm_engine/ui/event.rb

Overview

Gets included into Element

Instance Method Summary collapse

Instance Method Details

#event(event) ⇒ Object 



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# File 'lib/cyberarm_engine/ui/event.rb', line 35

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

#publish(event, *args) ⇒ Object

Raises:

  • (ArgumentError) 


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# File 'lib/cyberarm_engine/ui/event.rb', line 13

def publish(event, *args)
  raise ArgumentError, "#{self.class} does not handle #{event.inspect}" unless @event_handler.include?(event)

  return unless enabled?

  was_handled = false

  was_handled = true if respond_to?(event) && (send(event, self, *args) == :handled)

  @event_handler[event].reverse_each do |handler|
    if handler.call(self, *args) == :handled
      was_handled = true
      break
    end
  end

  return :handled if was_handled

  parent.publish(event, *args) if parent
  nil
end

#subscribe(event, method = nil, &block) ⇒ Object 



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# File 'lib/cyberarm_engine/ui/event.rb', line 3

def subscribe(event, method = nil, &block)
  handler = method || block
  @event_handler[event] << handler

  Subscription.new(self, event, handler)
end

#unsubscribe(subscription) ⇒ Object 



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# File 'lib/cyberarm_engine/ui/event.rb', line 10

def unsubscribe(subscription)
end