Class: GraphViz::Elements

Inherits:
Object show all
Defined in:
lib/graphviz/elements.rb

Instance Method Summary collapse

Constructor Details

#initialize ⇒ Elements

Returns a new instance of Elements.



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# File 'lib/graphviz/elements.rb', line 3

def initialize
  @elements = Array.new
  @elements_hash_by_type = Hash.new
end

Instance Method Details

#[](index, type = nil) ⇒ Object 



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# File 'lib/graphviz/elements.rb', line 31

def []( index, type = nil )
  if type.nil?
    return @elements[index]
  else
    return @elements_hash_by_type[type][index]
  end
end

#each(&b) ⇒ Object 



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# File 'lib/graphviz/elements.rb', line 17

def each( &b )
  @elements.each do |e|
    yield( e )
  end
end

#push(obj) ⇒ Object 



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# File 'lib/graphviz/elements.rb', line 8

def push( obj )
  @elements.push( obj )
  if @elements_hash_by_type[obj['type']].nil?
    @elements_hash_by_type[obj['type']] = Array.new
  end

  @elements_hash_by_type[obj['type']].push( obj )
end

#size_of(type) ⇒ Object 



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# File 'lib/graphviz/elements.rb', line 23

def size_of( type )
  if @elements_hash_by_type[type].nil?
    return 0
  else
    return @elements_hash_by_type[type].size
  end
end