Module: RMExtensions::ObjectExtensions::Observation

Defined in:
lib/motion/observation.rb

Instance Method Summary collapse

Instance Method Details

#rmext_cleanup ⇒ Object

remove all observations and event callbacks on this object



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# File 'lib/motion/observation.rb', line 68

def rmext_cleanup
  if @rmext_observation_proxy
    @rmext_observation_proxy.cleanup
  end
end

#rmext_observation_proxy ⇒ Object 



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# File 'lib/motion/observation.rb', line 7

def rmext_observation_proxy
  @rmext_observation_proxy ||= ObservationProxy.new(self)
end

#rmext_observe(object, key, &block) ⇒ Object

like rmext_observe_passive but additionally fires the callback immediately.



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# File 'lib/motion/observation.rb', line 22

def rmext_observe(object, key, &block)
  rmext_observe_passive(object, key, &block)
  block.call(object.send(key)) unless block.nil?
end

#rmext_observe_passive(object, key, &block) ⇒ Object

observe an object.key. takes a block that will be called with the new value upon change.

rmext_observe_passive(@model, “name”) do |val|

p "name is #{val}"

end



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# File 'lib/motion/observation.rb', line 17

def rmext_observe_passive(object, key, &block)
  rmext_observation_proxy.observe(object, key, &block)
end

#rmext_off(event, &block) ⇒ Object

remove a specific callback for an event on this object



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# File 'lib/motion/observation.rb', line 47

def rmext_off(event, &block)
  if @rmext_observation_proxy
    @rmext_observation_proxy.off(event, &block)
  end
end

#rmext_off_all ⇒ Object

remove all event callbacks on this object



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# File 'lib/motion/observation.rb', line 54

def rmext_off_all
  if @rmext_observation_proxy
    @rmext_observation_proxy.off_all
  end
end

#rmext_on(event, &block) ⇒ Object

register a callback when an event is trigger on this object



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# File 'lib/motion/observation.rb', line 42

def rmext_on(event, &block)
  rmext_observation_proxy.on(event, &block)
end

#rmext_trigger(event, *args) ⇒ Object

trigger an event with args on this object



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# File 'lib/motion/observation.rb', line 61

def rmext_trigger(event, *args)
  if @rmext_observation_proxy
    @rmext_observation_proxy.trigger(event, *args)
  end
end

#rmext_unobserve(object, key) ⇒ Object

unobserve an existing observation



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# File 'lib/motion/observation.rb', line 28

def rmext_unobserve(object, key)
  if @rmext_observation_proxy
    @rmext_observation_proxy.unobserve(object, key)
  end
end

#rmext_unobserve_all ⇒ Object

unobserve all existing observations



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# File 'lib/motion/observation.rb', line 35

def rmext_unobserve_all
  if @rmext_observation_proxy
    @rmext_observation_proxy.unobserve_all
  end
end