Module Sass::Callbacks
In: lib/sass/callbacks.rb

A lightweight infrastructure for defining and running callbacks. Callbacks are defined using \{define_callback\} at the class level, and called using `run_#{name}` at the instance level.

Clients can add callbacks by calling the generated `on_#{name}` method, and passing in a block that‘s run when the callback is activated.

@example Define a callback

  class Munger
    extend Sass::Callbacks
    define_callback :string_munged

    def munge(str)
      res = str.gsub(/[a-z]/, '\1\1')
      run_string_munged str, res
      res
    end
  end

@example Use a callback

  m = Munger.new
  m.on_string_munged {|str, res| puts "#{str} was munged into #{res}!"}
  m.munge "bar" #=> bar was munged into bbaarr!

Methods

Classes and Modules

Module Sass::Callbacks::InstanceMethods

Public Class methods

Automatically includes {InstanceMethods} when something extends this module.

@param base [Module]

Protected Instance methods

Define a callback with the given name. This will define an `on_#{name}` method that registers a block, and a `run_#{name}` method that runs that block (optionall with some arguments).

@param name [Symbol] The name of the callback @return [void]

[Validate]