indexing
	description: "Objects that creates simple links, simple clusters and ellipse nodes."
	author: ""
	date: "$Date$"
	revision: "$Revision$"

class
	ELLIPSE_FACTORY

inherit
	EG_FIGURE_FACTORY

feature -- Basic operations

	new_node_figure (a_node: EG_NODE): EG_LINKABLE_FIGURE is
			-- Create a node figure for `a_node'.
		do
			Result := create {ELLIPSE_NODE}.make_with_model (a_node)
		end
		
	new_cluster_figure (a_cluster: EG_CLUSTER): EG_CLUSTER_FIGURE is
			-- Create a cluster figure for `a_cluster'.
		do
			Result := create {EG_SIMPLE_CLUSTER}.make_with_model (a_cluster)
		end
		
	new_link_figure (a_link: EG_LINK): EG_LINK_FIGURE is
			-- Create a link figure for `a_link'.
		do
			Result := create {EG_SIMPLE_LINK}.make_with_model (a_link)
		end
		
	model_from_xml (node: XM_ELEMENT): EG_ITEM is
			-- Create an EG_ITEM from `node' if possible.
		local
			node_name, source_name, target_name: STRING
			a_source, a_target: EG_LINKABLE
		do
			node_name := node.name
			if node_name.is_equal ("ELLIPSE_NODE") then
				create {EG_NODE} Result
			elseif node_name.is_equal ("EG_SIMPLE_CLUSTER") then
				create {EG_CLUSTER} Result
			elseif node_name.is_equal ("EG_SIMPLE_LINK") then
				source_name := node.attribute_by_name ("SOURCE").value
				target_name := node.attribute_by_name ("TARGET").value
				
				if source_name /= Void and then target_name /= Void and then world /= Void then
					a_source := linkable_with_name (source_name)
					if a_source /= Void then
						a_target := linkable_with_name (target_name)
						if a_target /= Void then
							create {EG_LINK} Result.make_with_source_and_target (a_source, a_target)
						end
					end
				end
			end
		end

end -- class ELLIPSE_FACTORY