Module: Ducktape::Hookable

Included in:
Array, BindableAttribute, Hash, String
Defined in:
lib/ducktape/hookable.rb

Defined Under Namespace

Modules: ClassMethods

Class Method Summary collapse

Instance Method Summary collapse

Class Method Details

.extended(_) ⇒ Object 



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# File 'lib/ducktape/hookable.rb', line 48

def self.extended(_)
  raise 'Cannot extend, only include.'
end

.included(base) ⇒ Object 



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# File 'lib/ducktape/hookable.rb', line 37

def self.included(base)
  base.extend(ClassMethods)
  base.def_hook :on_changed unless base.method_defined?(:on_changed)
  return unless base.is_a?(Module)
  included = base.respond_to?(:included) && base.method(:included)
  base.define_singleton_method(:included, ->(c) do
    included.(c) if included
    c.extend(ClassMethods)
  end)
end

Instance Method Details

#add_hook(event, hook = nil, &block) ⇒ Object

Raises:

  • (ArgumentError) 


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# File 'lib/ducktape/hookable.rb', line 52

def add_hook(event, hook = nil, &block)
  hook = block if block #block has precedence
  raise ArgumentError, 'no hook was passed' unless hook
  hook = hook.to_s unless hook.respond_to?(:call)
  self.hooks[event.to_s].unshift(hook)
  hook
end

#clear_hooks(event = nil) ⇒ Object 



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# File 'lib/ducktape/hookable.rb', line 65

def clear_hooks(event = nil)
  if event
    self.hooks.delete(event.to_s)
  else
    self.hooks.clear.dup
  end
end

#remove_hook(event, hook) ⇒ Object 



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# File 'lib/ducktape/hookable.rb', line 60

def remove_hook(event, hook)
  hook = hook.to_s unless hook.respond_to?(:call)
  self.hooks[event.to_s].delete(hook)
end