def add_graph( xGraphName = nil, hOpts = {}, &block )
if xGraphName.kind_of?(Hash)
hOpts = xGraphName
xGraphName = nil
end
if xGraphName.nil?
xGraphID = String.random(11)
xGraphName = ""
else
xGraphID = xGraphName
end
@hoGraphs[xGraphID] = GraphViz::new( xGraphName, {:parent => self, :type => @oGraphType}, &block )
hOpts.each do |xKey, xValue|
@hoGraphs[xGraphID][xKey.to_s] = xValue
end
@elements_order.push( {
"type" => "graph",
"name" => xGraphName,
"value" => @hoGraphs[xGraphID]
} )
return( @hoGraphs[xGraphID] )
end