Module: Cura::Attributes::HasEvents

Included in:
Cura::Application, Component::Base, Window
Defined in:
lib/cura/attributes/has_events.rb

Overview

Adds an ‘event_handler` attribute as well as `callbacks` and `on_event` class methods. When subclassed, the callbacks are inherited. TODO: Rename to HasEventHandler

Defined Under Namespace

Modules: ClassMethods

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Instance Attribute Details

#event_handler ⇒ Event::Handler (readonly)

Get the event handler for this object.



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# File 'lib/cura/attributes/has_events.rb', line 59

def event_handler
  @event_handler
end

Class Method Details

.included(base) ⇒ Object 



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# File 'lib/cura/attributes/has_events.rb', line 44

def included(base)
  base.send(:extend, ClassMethods)
end

Instance Method Details

#initialize(attributes = {}) ⇒ Object 



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# File 'lib/cura/attributes/has_events.rb', line 49

def initialize(attributes={})
  @event_handler = Event::Handler.new(self)
  register_class_callbacks

  super
end

#on_event(event_name = :default, *arguments) { ... } ⇒ Proc

Register a callback for an event to this instance.

Yields:

  • The callback block.



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# File 'lib/cura/attributes/has_events.rb', line 66

def on_event(event_name=:default, *arguments, &block)
  event_handler.register(event_name, *arguments, &block)
end