aistudio-wpf-diagram/AIStudio.Wpf.DiagramDesigner/ViewModels/BaseViewModel/ConnectorVertexModel.cs

using AIStudio.Wpf.DiagramDesigner.Geometrys;

namespace AIStudio.Wpf.DiagramDesigner
{
    public class ConnectorVertexModel : ConnectorPointModel
    {
        public ConnectorVertexModel(ConnectorViewModel connector, PointBase? position = null)
        {
            Parent = connector;
            X = position?.X ?? 0;
            Y = position?.Y ?? 0;          
        }

        protected override void Init()
        {
            base.Init();

            DeleteVertexCommand = new SimpleCommand(DeleteVertex);
        }

        protected override void LoadDesignerItemViewModel(IDiagramViewModel root, SelectableItemBase designerbase)
        {
            base.LoadDesignerItemViewModel(root, designerbase);

        }

        public ConnectorViewModel Connector
        {
            get
            {
                return Parent as ConnectorViewModel;
            }
        }

        public override PointBase Position
        {
            get
            {
                return new PointBase(Connector.Area.Left + Left, Connector.Area.Top + Top);
            }
        }

        public override PointBase MiddlePosition => new PointBase(Connector.Area.Left + Left + ConnectorWidth / 2, Connector.Area.Top + Top + ConnectorHeight / 2);

        public SimpleCommand DeleteVertexCommand
        {
            get; set;
        }

        private void DeleteVertex(object parameter)
        {
            if (parameter is ConnectorVertexModel vertice)
            {
                Connector.Vertices.Remove(vertice);
            }
        }

    }
}