Class: Volt::Listener
Overview
Listeners are returned from #on on a class with Eventable included. Listeners can be stopped by calling #remove
Instance Method Summary collapse
- #call(*args) ⇒ Object
-
#initialize(klass, events, callback) ⇒ Listener
constructor
A new instance of Listener.
- #inspect ⇒ Object
-
#instance_call(instance, *args) ⇒ Object
Call the callback with self set to instance.
- #remove ⇒ Object
Constructor Details
#initialize(klass, events, callback) ⇒ Listener
Returns a new instance of Listener.
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# File 'lib/volt/reactive/eventable.rb', line 5 def initialize(klass, events, callback) @klass = klass @events = events @callback = callback end |
Instance Method Details
#call(*args) ⇒ Object
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# File 'lib/volt/reactive/eventable.rb', line 11 def call(*args) @callback.call(*args) unless @removed end |
#inspect ⇒ Object
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# File 'lib/volt/reactive/eventable.rb', line 33 def inspect "<Listener:#{object_id} events=#{@events}>" end |
#instance_call(instance, *args) ⇒ Object
Call the callback with self set to instance
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# File 'lib/volt/reactive/eventable.rb', line 16 def instance_call(instance, *args) instance.instance_exec(*args, &@callback) end |
#remove ⇒ Object
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# File 'lib/volt/reactive/eventable.rb', line 20 def remove raise "Listener has already been removed" if @removed @removed = true @events.each do |event| @klass.remove_listener(event, self) end # Make things easier on the GC @klass = nil @callback = nil end |