port from perforce

intromat/NodeNetwork/ViewModels/CutLineViewModel.cs

@@ -0,0 +1,61 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using System.Windows;
+using DynamicData;
+using ReactiveUI;
+
+namespace NodeNetwork.ViewModels
+{
+    /// <summary>
+    /// Viewmodel class for the UI cutting line that is used to delete connections.
+    /// </summary>
+    public class CutLineViewModel : ReactiveObject
+    {
+        #region StartPoint
+        /// <summary>
+        /// The coordinates of the point at which the cutting line starts.
+        /// </summary>
+        public Point StartPoint
+        {
+            get => _startPoint;
+            set => this.RaiseAndSetIfChanged(ref _startPoint, value);
+        }
+        private Point _startPoint;
+        #endregion
+
+        #region EndPoint
+        /// <summary>
+        /// The coordinates of the point at which the cutting line ends.
+        /// </summary>
+        public Point EndPoint
+        {
+            get => _endPoint;
+            set => this.RaiseAndSetIfChanged(ref _endPoint, value);
+        }
+        private Point _endPoint;
+        #endregion
+
+        #region IsVisible
+        /// <summary>
+        /// If true, the cutting line is visible. If false, the cutting line is hidden.
+        /// </summary>
+        public bool IsVisible
+        {
+            get => _isVisible;
+            set => this.RaiseAndSetIfChanged(ref _isVisible, value);
+        }
+        private bool _isVisible;
+        #endregion
+
+        #region IntersectingConnections
+        /// <summary>
+        /// A list of connections that visually intersect with the cutting line.
+        /// This list is driven by the view.
+        /// </summary>
+        public ISourceList<ConnectionViewModel> IntersectingConnections { get; } = new SourceList<ConnectionViewModel>();
+        #endregion
+    }
+}