Module: StickyBlox::ClassMethods

Defined in:
lib/sticky_blox/behavior.rb

Instance Method Summary collapse

Instance Method Details

#my_meta_class ⇒ Object 



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# File 'lib/sticky_blox/behavior.rb', line 25

def my_meta_class
  class << self; self; end
end

#stick(name, replace = false, &block) ⇒ Object 



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# File 'lib/sticky_blox/behavior.rb', line 77

def stick(name, replace=false, &block)
  my_methods = stuck_methods
  if replace && my_methods.has_key?(name)
    my_methods.delete(name)
  end
  (my_methods[name] ||= BindingArray.new) << block

  my_methods = my_methods[name]
  self.class.class_eval do
    define_method name do
      my_methods
    end
  end
end

#stick_to(binding) ⇒ Object

Defines methods on the class identified by “binding” for each method in @stuck_methods that will call the block associated with that method name, passing any arguments that are defined at runtime



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# File 'lib/sticky_blox/behavior.rb', line 40

def stick_to( binding )
  my_meta_class.instance_eval do
    clz = self
    @stuck_methods.each_pair do |method_name, binding_array|
      binding.class_eval do
        define_method method_name do | *args |
          binding_array.bind(self).call(*args)
        end
      end
    end
  end
end

#stuck_methods ⇒ Object 



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# File 'lib/sticky_blox/behavior.rb', line 29

def stuck_methods
  my_meta_class.instance_eval do
    @stuck_methods ||= {}
    @stuck_methods
  end
end

#unstick_all_from(binding, ignore_errors = true) ⇒ Object 



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# File 'lib/sticky_blox/behavior.rb', line 73

def unstick_all_from( binding, ignore_errors=true )
  unstick_from( binding => my_meta_class.instance_variable_get("@stuck_methods").keys, :ignore_errors => ignore_errors )
end

#unstick_from(options = {}) ⇒ Object 



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# File 'lib/sticky_blox/behavior.rb', line 53

def unstick_from( options={} )
  ignore_errors = options.delete(:ignore_errors)
  options.each_pair do |binding, method_names|
    method_names = [method_names].flatten
    method_names.each do |method_name|
      binding.class_eval do
        begin
          # remove_method removes it from a specific class, but not its parent
          # Do we want to use undef_method which will remove it from the whole
          # inheritance chain?
          remove_method method_name
        rescue NoMethodError => e
          # unless told otherwise, ignore the error -- if we don't respond to the method, no harm done.
          raise e unless ignore_errors
        end
      end if binding.instance_methods.detect{|e| e.to_s == method_name.to_s}
    end
  end
end