public void Refresh()
        {
            Tabs.Clear();

            foreach (var tab in DesignerWindow.Designer.Tabs)
            {
                var tab1           = tab;
                var navigationItem = new NavigationItem()
                {
                    Icon            = "CommandIcon",
                    SpecializedIcon = null,

                    //State = DesignerWindow.Designer.CurrentTab.Graph == tab ? NavigationItemState.Current : NavigationItemState.Regular,
                    Title            = tab.Title + (tab.IsDirty ? "*" : string.Empty),
                    NavigationAction = x =>
                    {
                    },
                    CloseAction = x =>
                    {
                    }
                };

                if (DesignerWindow.Workspace != null && DesignerWindow.Workspace.CurrentGraph != null &&
                    tab.Identifier == DesignerWindow.Workspace.CurrentGraph.Identifier)
                {
                    navigationItem.State = NavigationItemState.Current;
                }
                else
                {
                    navigationItem.State = NavigationItemState.Regular;
                }

                Tabs.Add(navigationItem);
            }

            Breadcrubs.Clear();

            foreach (var filter in new[] { DiagramViewModel.GraphData.RootFilter }.Concat(this.DiagramViewModel.GraphData.GetFilterPath()))
            {
                var filter1        = filter;
                var navigationItem = new NavigationItem()
                {
                    Icon             = "CommandIcon",
                    Title            = filter.Name,
                    State            = DiagramViewModel.GraphData != null && DiagramViewModel.GraphData.CurrentFilter == filter ? NavigationItemState.Current : NavigationItemState.Regular,
                    NavigationAction = x =>
                    {
                    }
                };

                if (filter == DiagramViewModel.GraphData.RootFilter)
                {
                    navigationItem.SpecializedIcon = "RootFilterIcon";
                }

                Breadcrubs.Add(navigationItem);
            }
        }
        public void Refresh()
        {
            Tabs.Clear();

            foreach (var tab in DesignerWindow.Designer.Tabs)
            {
                var tab1           = tab;
                var navigationItem = new NavigationItem()
                {
                    Icon            = "CommandIcon",
                    SpecializedIcon = null,

                    //State = DesignerWindow.Designer.CurrentTab.Graph == tab ? NavigationItemState.Current : NavigationItemState.Regular,
                    Title            = tab.Title + (tab.IsDirty ? "*" : string.Empty),
                    NavigationAction = x =>
                    {
                        InvertApplication.Execute(new LambdaCommand("Change Current Graph", () =>
                        {
                            WorkspaceService.CurrentWorkspace.CurrentGraphId = tab1.Identifier;
                            //DesignerWindow.SwitchDiagram(WorkspaceService.CurrentWorkspace.Graphs.FirstOrDefault(p => p.Identifier == tab.Identifier));
                        }));
                    },
                    CloseAction = x =>
                    {
                        InvertApplication.Execute(new LambdaCommand("Close Graph", () =>
                        {
                            this.DiagramViewModel.CurrentRepository.RemoveAll <WorkspaceGraph>(p => p.GraphId == tab1.Identifier);
                        }));
                    }
                };

                if (DesignerWindow.Workspace != null && DesignerWindow.Workspace.CurrentGraph != null &&
                    tab.Identifier == DesignerWindow.Workspace.CurrentGraph.Identifier)
                {
                    navigationItem.State = NavigationItemState.Current;
                }
                else
                {
                    navigationItem.State = NavigationItemState.Regular;
                }

                Tabs.Add(navigationItem);
            }

            Breadcrubs.Clear();

            foreach (var filter in new[] { DiagramViewModel.GraphData.RootFilter }.Concat(this.DiagramViewModel.GraphData.GetFilterPath()))
            {
                var navigationItem = CreateNavigationItem(filter);
                if (filter == DiagramViewModel.GraphData.RootFilter)
                {
                    navigationItem.SpecializedIcon = "RootFilterIcon";
                }

                Breadcrubs.Add(navigationItem);
            }
        }