Class: RShade::EventTree

Inherits:
Object show all
Includes:
Enumerable
Defined in:
lib/rshade/event_tree.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize ⇒ EventTree

Returns a new instance of EventTree.



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# File 'lib/rshade/event_tree.rb', line 7

def initialize
  @current = @head = EventTreeNode.new(nil, 0, nil)
end

Instance Attribute Details

#current ⇒ Object (readonly)

Returns the value of attribute current.



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# File 'lib/rshade/event_tree.rb', line 5

def current
  @current
end

#head ⇒ Object (readonly)

Returns the value of attribute head.



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# File 'lib/rshade/event_tree.rb', line 5

def head
  @head
end

Instance Method Details

#add(value, level) ⇒ Object 



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# File 'lib/rshade/event_tree.rb', line 11

def add(value, level)
  if current.level + 1 == level
    current.children << EventTreeNode.new(value, level, current)
    return
  end
  if current.level + 1 < level

    last = current.children.last
    unless last
      current.children << EventTreeNode.new(nil, current.level + 1 , current)
    end
    @current = current.children.last
    add(value, level)
    return
  end

  if current.level + 1 > level
    unless current.parent
      return
    end
    @current = current.parent
    add(value, level)
  end
end

#current!(&block) ⇒ Object 



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# File 'lib/rshade/event_tree.rb', line 36

def current!(&block)
  block.call(current.children.last) if current.children.last
end

#each(&block) ⇒ Object 



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# File 'lib/rshade/event_tree.rb', line 40

def each(&block)
  @head.each(&block)
end