Class: Frill::List::Node

Inherits:
Object
  • Object
show all
Defined in:
lib/frill/frill.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(label) ⇒ Node

Returns a new instance of Node.



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# File 'lib/frill/frill.rb', line 142

def initialize(label)
  @label  = label
  @next = nil
  @previous  = nil
end

Instance Attribute Details

#label ⇒ Object (readonly)

Returns the value of attribute label.



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# File 'lib/frill/frill.rb', line 140

def label
  @label
end

#next ⇒ Object

Returns the value of attribute next.



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# File 'lib/frill/frill.rb', line 139

def next
  @next
end

#previous ⇒ Object

Returns the value of attribute previous.



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# File 'lib/frill/frill.rb', line 139

def previous
  @previous
end

Instance Method Details

#first ⇒ Object 



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# File 'lib/frill/frill.rb', line 156

def first
  first_node = self
  first_node = first_node.previous while first_node.previous
  first_node
end

#last ⇒ Object 



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# File 'lib/frill/frill.rb', line 162

def last
  last_node = self
  last_node = last_node.next while last_node.next
  last_node
end

#move_before(node) ⇒ Object 



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# File 'lib/frill/frill.rb', line 148

def move_before node
  next_node = node.first
  previous_node = self.last

  previous_node.next = next_node
  next_node.previous = previous_node
end