Class: Shouter::Store

Inherits:
Object
  • Object
show all
Defined in:
lib/shouter/store.rb

Constant Summary collapse

@@listeners = 
[]
@@mutex = 
Mutex.new

Class Method Summary collapse

Class Method Details

.clear ⇒ Object 



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# File 'lib/shouter/store.rb', line 30

def clear
  mutex.synchronize do
    @@listeners = []
  end
end

.inherited(subclass) ⇒ Object

Raises:



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# File 'lib/shouter/store.rb', line 14

def inherited(subclass)
  raise NoInheritanceAllowedError.new("#{self.class.to_s} is meant to be a singleton class and not to be inherited")
end

.listeners ⇒ Object 



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# File 'lib/shouter/store.rb', line 48

def listeners
  @@listeners
end

.mutex ⇒ Object 



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# File 'lib/shouter/store.rb', line 52

def mutex
  @@mutex
end

.notify(scope, event, args) ⇒ Object 



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# File 'lib/shouter/store.rb', line 36

def notify(scope, event, args)
  return if listeners.empty?

  listeners.select { |listener| listener.for?(scope) }.each do |listener|
    klass = listener.object
    klass.public_send(event, *args) if klass.respond_to?(event)
    # Serves as callback
    yield if block_given?
    unregister(klass) if listener.single?
  end
end

.register(objects, options) ⇒ Object 



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# File 'lib/shouter/store.rb', line 18

def register(objects, options)
  mutex.synchronize do
    objects.each { |object| @@listeners << Shouter::Listener.new(object, options) }
  end
end

.unregister(objects) ⇒ Object 



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# File 'lib/shouter/store.rb', line 24

def unregister(objects)
  mutex.synchronize do
    [*objects].each { |object| listeners.delete_if { |listener| listener.object == object } }
  end
end