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module Netzke::Core
# This module can be included in a component class to allows delegating the configuration options for a component into the level of the component's class.
# For example:
#
# class SomeComponentBase < Netzke::Base
# delegates_to_dsl :title, :html
# end
#
# This will provide its children with class (DSL) methods +title+ and +html+:
#
# class SomeComponent < SomeComponentBase
# title "Some component"
# html "HTML set in DSL"
# end
#
# ... which would be equivalent to:
#
# class SomeComponent < SomeComponentBase
# def configure(c)
# c.title = "Some component"
# c.html = "HTML set in DSL"
# super
# end
# end
#
# This may be handy when a frequently-inherited class implements some common options.
module ConfigToDslDelegator
extend ActiveSupport::Concern
included do
class_attribute :delegated_options
self.delegated_options = []
class_attribute :delegated_defaults
self.delegated_defaults = {}
end
def configure(c)
c.merge! delegated_defaults
super
end
module ClassMethods
# Delegates specified configuration options to the class level
def delegates_to_dsl(*option_names)
self.delegated_options |= option_names
end
def inherited(inherited_class)
super
properties = self.delegated_options
properties.each do |property|
inherited_class.class.send(:define_method, property, lambda { |value|
self.delegated_defaults = self.delegated_defaults.dup if self.superclass.respond_to?(:delegated_defaults) && self.delegated_defaults == self.superclass.delegated_defaults
self.delegated_defaults[property.to_sym] = value
})
end
end
end
end
end
Version data entries
16 entries across 16 versions & 1 rubygems