Class: ActiveScaffold::DataStructures::Actions

Inherits:
Object
  • Object
show all
Includes:
Enumerable
Defined in:
lib/active_scaffold/data_structures/actions.rb

Instance Method Summary collapse

Constructor Details

#initialize(*args) ⇒ Actions

Returns a new instance of Actions.


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# File 'lib/active_scaffold/data_structures/actions.rb', line 4

def initialize(*args)
  @set = []
  add(*args)
end

Instance Method Details

#add(*args) ⇒ Object Also known as: <<


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# File 'lib/active_scaffold/data_structures/actions.rb', line 14

def add(*args)
  args.each { |arg| @set << arg.to_sym unless @set.include? arg.to_sym }
end

#eachObject


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# File 'lib/active_scaffold/data_structures/actions.rb', line 19

def each
  @set.each { |item| yield item }
end

#exclude(*args) ⇒ Object


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# File 'lib/active_scaffold/data_structures/actions.rb', line 9

def exclude(*args)
  args.collect!(&:to_sym) # symbolize the args
  @set.reject! { |m| args.include? m } # reject all actions specified
end

#include?(val) ⇒ Boolean

Returns:

  • (Boolean)

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# File 'lib/active_scaffold/data_structures/actions.rb', line 23

def include?(val)
  val.is_a?(Symbol) ? super : @set.any? { |item| item.to_s == val.to_s }
end

#swap(one, two) ⇒ Object

swaps one element in the list with the other. accepts arguments in any order. it just figures out which one is in the list and which one is not.


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# File 'lib/active_scaffold/data_structures/actions.rb', line 29

def swap(one, two)
  if include? one
    exclude one
    add two
  else
    exclude two
    add one
  end
end