public DiagramViewportViewModel(
            IModelService modelService,
            IDiagramService diagramService,
            IDiagramShapeUiFactory diagramShapeUiFactory,
            double minZoom,
            double maxZoom,
            double initialZoom)
            : base(modelService, diagramService)
        {
            MinZoom = minZoom;
            MaxZoom = maxZoom;

            _diagramNodeToViewModelMap      = new Map <ModelNodeId, DiagramNodeViewModel>();
            _diagramConnectorToViewModelMap = new Map <ModelRelationshipId, DiagramConnectorViewModel>();

            _diagramShapeUiFactory = diagramShapeUiFactory;
            _diagramShapeUiFactory.Initialize(modelService, this);

            ViewportCalculator         = new AutoMoveViewportViewModel(modelService, diagramService, minZoom, maxZoom, initialZoom);
            DiagramNodeViewModels      = new ThreadSafeObservableCollection <DiagramNodeViewModel>();
            DiagramConnectorViewModels = new ThreadSafeObservableCollection <DiagramConnectorViewModel>();
            MiniButtonPanelViewModel   = new MiniButtonPanelViewModel();

            DiagramNodeDoubleClickedCommand = new DelegateCommand <IDiagramNode>(i => DiagramNodeInvoked?.Invoke(i));

            ViewportCalculator.TransformChanged += OnViewportTransformChanged;
            DiagramService.DiagramChanged       += OnDiagramChanged;

            AddDiagram(diagramService.LatestDiagram);
        }
 private void OnDiagramNodeInvoked(IDiagramNode diagramNode)
 {
     DiagramNodeInvoked?.Invoke(diagramNode);
 }
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        public DiagramViewportViewModel(
            [NotNull] IModelEventSource modelEventSource,
            [NotNull] IDiagramEventSource diagramEventSource,
            [NotNull] IDiagramShapeUiFactory diagramShapeUiFactory,
            [NotNull] IDecorationManager <IMiniButton, IDiagramShapeUi> miniButtonManager,
            double minZoom,
            double maxZoom,
            double initialZoom)
            : base(modelEventSource, diagramEventSource)
        {
            MinZoom = minZoom;
            MaxZoom = maxZoom;

            _diagramNodeToViewModelMap      = new Map <ModelNodeId, DiagramNodeViewModel>();
            _diagramConnectorToViewModelMap = new Map <ModelRelationshipId, DiagramConnectorViewModel>();

            DiagramShapeUiFactory    = diagramShapeUiFactory;
            MiniButtonPanelViewModel = (MiniButtonPanelViewModel)miniButtonManager;

            ViewportCalculator         = new AutoMoveViewportViewModel(modelEventSource, diagramEventSource, minZoom, maxZoom, initialZoom);
            DiagramNodeViewModels      = new ThreadSafeObservableCollection <DiagramNodeViewModel>();
            DiagramConnectorViewModels = new ThreadSafeObservableCollection <DiagramConnectorViewModel>();

            DiagramNodeDoubleClickedCommand = new DelegateCommand <IDiagramNode>(i => DiagramNodeInvoked?.Invoke(i));

            ViewportCalculator.TransformChanged += OnViewportTransformChanged;
            DiagramEventSource.DiagramChanged   += OnDiagramChanged;

            AddDiagram(diagramEventSource.LatestDiagram);
        }