public IVisio.Document DrawNamespacesAndClasses(IList <Type> types_)
        {
            this._client.Application.AssertApplicationAvailable();

            string segoeui_fontname      = "Segoe UI";
            string segoeuilight_fontname = "Segoe UI Light";
            string def_linecolor         = "rgb(180,180,180)";
            string def_shape_fill        = "rgb(245,245,245)";

            var doc               = this._client.Document.New(8.5, 11, null);
            var fonts             = doc.Fonts;
            var font_segoe        = fonts[segoeui_fontname];
            var font_segoelight   = fonts[segoeuilight_fontname];
            int fontid_segoe      = font_segoe.ID16;
            int fontid_segoelight = font_segoelight.ID16;

            var types = types_.Select(t => new TypeInfo(t));

            var pathbuilder = new PathTreeBuilder();

            foreach (var type in types)
            {
                pathbuilder.Add(type.Type.Namespace);
            }

            var namespaces = pathbuilder.GetPaths();

            var tree_layout = new VATREE.Drawing();

            tree_layout.LayoutOptions.Direction     = VATREE.LayoutDirection.Down;
            tree_layout.LayoutOptions.ConnectorType = VATREE.ConnectorType.PolyLine;
            var ns_node_map     = new Dictionary <string, VATREE.Node>(namespaces.Count);
            var node_to_nslabel = new Dictionary <VATREE.Node, string>(namespaces.Count);

            // create nodes for every namespace
            foreach (string ns in namespaces)
            {
                string label             = ns;
                int    index_of_last_sep = ns.LastIndexOf(pathbuilder.Separator, StringComparison.Ordinal);
                if (index_of_last_sep > 0)
                {
                    label = ns.Substring(index_of_last_sep + 1);
                }

                string ns1 = ns;
                var    types_in_namespace = types.Where(t => t.Type.Namespace == ns1)
                                            .OrderBy(t => t.Type.Name)
                                            .Select(t => t.Label);
                var node = new VATREE.Node(ns);
                node.Size = new Drawing.Size(2.0, (0.15) * (1 + 2 + types_in_namespace.Count()));


                var markup = new Text.Markup.TextElement();
                var m1     = markup.AddElement(label + "\n");
                m1.CharacterCells.Font  = fontid_segoe;
                m1.CharacterCells.Size  = "12.0pt";
                m1.CharacterCells.Style = "1"; // Bold
                var m2 = markup.AddElement();
                m2.CharacterCells.Font = fontid_segoe;
                m2.CharacterCells.Size = "8.0pt";
                m2.AddText(string.Join("\n", types_in_namespace));

                node.Text = markup;

                ns_node_map[ns]       = node;
                node_to_nslabel[node] = label;
            }

            // add children to nodes
            foreach (string ns in namespaces)
            {
                var parent_ns = pathbuilder.PathToParentPath[ns];

                if (parent_ns != null)
                {
                    // the current namespace has a parent
                    var parent_node = ns_node_map[parent_ns];
                    var child_node  = ns_node_map[ns];
                    parent_node.Children.Add(child_node);
                }
                else
                {
                    // that means this namespace is a root, forget about it
                }
            }

            if (pathbuilder.Roots.Count == 0)
            {
            }
            else if (pathbuilder.Roots.Count == 1)
            {
                // when there is exactly one root namespace, then that node will be the tree's root node
                var first_root = pathbuilder.Roots[0];
                var root_n     = ns_node_map[first_root];
                tree_layout.Root = root_n;
            }
            else
            {
                // if there are multiple root namespaces, inject an empty placeholder root
                var root_n = new VATREE.Node();
                tree_layout.Root = root_n;

                foreach (var root_ns in pathbuilder.Roots)
                {
                    var node = ns_node_map[root_ns];
                    tree_layout.Root.Children.Add(node);
                }
            }

            // format the shapes
            foreach (var node in tree_layout.Nodes)
            {
                if (node.Cells == null)
                {
                    node.Cells = new DOM.ShapeCells();
                }
                node.Cells.FillForegnd = def_shape_fill;
                //node.ShapeCells.LineWeight = "0";
                //node.ShapeCells.LinePattern = "0";
                node.Cells.LineColor           = def_linecolor;
                node.Cells.ParaHorizontalAlign = "0";
                node.Cells.VerticalAlign       = "0";
            }

            var cxn_cells = new DOM.ShapeCells();

            cxn_cells.LineColor = def_linecolor;
            tree_layout.LayoutOptions.ConnectorCells = cxn_cells;
            tree_layout.Render(doc.Application.ActivePage);

            DeveloperCommands.hide_ui_stuff(doc);

            return(doc);
        }
        public IVisio.Document DrawNamespaces(IList <Type> types)
        {
            this._client.Application.AssertApplicationAvailable();

            string def_linecolor = "rgb(140,140,140)";
            string def_fillcolor = "rgb(240,240,240)";
            string def_font      = "Segoe UI";

            var doc    = this._client.Document.New(8.5, 11, null);
            var fonts  = doc.Fonts;
            var font   = fonts[def_font];
            int fontid = font.ID16;

            var pathbuilder = new PathTreeBuilder();

            foreach (var type in types)
            {
                pathbuilder.Add(type.Namespace);
            }

            var namespaces = pathbuilder.GetPaths();

            var tree_layout = new VATREE.Drawing();

            tree_layout.LayoutOptions.Direction     = VATREE.LayoutDirection.Right;
            tree_layout.LayoutOptions.ConnectorType = VATREE.ConnectorType.CurvedBezier;
            var ns_node_map = new Dictionary <string, VATREE.Node>(namespaces.Count);

            // create nodes for every namespace
            foreach (string ns in namespaces)
            {
                string label             = ns;
                int    index_of_last_sep = ns.LastIndexOf(pathbuilder.Separator, StringComparison.Ordinal);
                if (index_of_last_sep > 0)
                {
                    label = ns.Substring(index_of_last_sep + 1);
                }

                var node = new VATREE.Node(ns);
                node.Text       = new Text.Markup.TextElement(label);
                node.Size       = new Drawing.Size(2.0, 0.25);
                ns_node_map[ns] = node;
            }

            // add children to nodes
            foreach (string ns in namespaces)
            {
                var parent_ns = pathbuilder.PathToParentPath[ns];

                if (parent_ns != null)
                {
                    // the current namespace has a parent
                    var parent_node = ns_node_map[parent_ns];
                    var child_node  = ns_node_map[ns];
                    parent_node.Children.Add(child_node);
                }
                else
                {
                    // that means this namespace is a root, forget about it
                }
            }

            if (pathbuilder.Roots.Count == 0)
            {
            }
            else if (pathbuilder.Roots.Count == 1)
            {
                // when there is exactly one root namespace, then that node will be the tree's root node
                var first_root = pathbuilder.Roots[0];
                var root_n     = ns_node_map[first_root];
                tree_layout.Root = root_n;
            }
            else
            {
                // if there are multiple root namespaces, inject an empty placeholder root
                var root_n = new VATREE.Node();
                tree_layout.Root = root_n;

                foreach (var root_ns in pathbuilder.Roots)
                {
                    var node = ns_node_map[root_ns];
                    tree_layout.Root.Children.Add(node);
                }
            }

            // format the shapes
            foreach (var node in tree_layout.Nodes)
            {
                if (node.Cells == null)
                {
                    node.Cells = new DOM.ShapeCells();
                }
                node.Cells.FillForegnd         = def_fillcolor;
                node.Cells.CharFont            = fontid;
                node.Cells.LineColor           = def_linecolor;
                node.Cells.ParaHorizontalAlign = "0";
            }

            var cxn_cells = new DOM.ShapeCells();

            cxn_cells.LineColor = def_linecolor;
            tree_layout.LayoutOptions.ConnectorCells = cxn_cells;


            tree_layout.Render(doc.Application.ActivePage);

            DeveloperCommands.hide_ui_stuff(doc);
            return(doc);
        }