VisualScripting: Fixed Preview; Added auto-fit mode

src/Artemis.Core/VisualScripting/Interfaces/INodeScript.cs

@@ -15,7 +15,10 @@ namespace Artemis.Core
         Type ResultType { get; }
 
         object? Context { get; set; }
-
+        
+        event EventHandler<INode>? NodeAdded;
+        event EventHandler<INode>? NodeRemoved;
+        
         void Run();
         void AddNode(INode node);
         void RemoveNode(INode node);

src/Artemis.Core/VisualScripting/Interfaces/IPin.cs

@@ -16,6 +16,9 @@ namespace Artemis.Core
 
         bool IsEvaluated { get; set; }
 
+        event EventHandler<IPin> PinConnected;
+        event EventHandler<IPin> PinDisconnected;
+
         void ConnectTo(IPin pin);
         void DisconnectFrom(IPin pin);
     }

src/Artemis.Core/VisualScripting/Interfaces/IPinCollection.cs

@@ -9,6 +9,9 @@ namespace Artemis.Core
         PinDirection Direction { get; }
         Type Type { get; }
 
+        event EventHandler<IPin> PinAdded;
+        event EventHandler<IPin> PinRemoved;
+
         IPin AddPin();
         bool Remove(IPin pin);
     }

src/Artemis.Core/VisualScripting/Node.cs

@@ -1,18 +1,14 @@
 using System;
 using System.Collections.Generic;
 using System.Collections.ObjectModel;
-using System.Linq;
 
 namespace Artemis.Core
 {
     public abstract class Node : CorePropertyChanged, INode
     {
-        public event EventHandler Resetting;
-
         #region Properties & Fields
 
         private string _name;
-
         public string Name
         {
             get => _name;
@@ -20,7 +16,6 @@ namespace Artemis.Core
         }
 
         private string _description;
-
         public string Description
         {
             get => _description;
@@ -28,7 +23,6 @@ namespace Artemis.Core
         }
 
         private double _x;
-
         public double X
         {
             get => _x;
@@ -36,7 +30,6 @@ namespace Artemis.Core
         }
 
         private double _y;
-
         public double Y
         {
             get => _y;
@@ -44,7 +37,6 @@ namespace Artemis.Core
         }
 
         private object? _storage;
-
         public object? Storage
         {
             get => _storage;
@@ -61,11 +53,16 @@ namespace Artemis.Core
 
         #endregion
 
+        #region Events
+
+        public event EventHandler Resetting;
+
+        #endregion
+
         #region Construtors
 
         protected Node()
-        {
-        }
+        { }
 
         protected Node(string name, string description)
         {
@@ -138,8 +135,7 @@ namespace Artemis.Core
         }
 
         public virtual void Initialize(INodeScript script)
-        {
-        }
+        { }
 
         public abstract void Evaluate();
 
@@ -154,12 +150,10 @@ namespace Artemis.Core
     public abstract class Node<T> : CustomViewModelNode where T : ICustomNodeViewModel
     {
         protected Node()
-        {
-        }
+        { }
 
         protected Node(string name, string description) : base(name, description)
-        {
-        }
+        { }
 
         public override Type CustomViewModelType => typeof(T);
         public T CustomViewModel => (T) BaseCustomViewModel!;
@@ -169,13 +163,11 @@ namespace Artemis.Core
     {
         /// <inheritdoc />
         protected CustomViewModelNode()
-        {
-        }
+        { }
 
         /// <inheritdoc />
         protected CustomViewModelNode(string name, string description) : base(name, description)
-        {
-        }
+        { }
 
         public abstract Type CustomViewModelType { get; }
         public object? BaseCustomViewModel { get; set; }

src/Artemis.Core/VisualScripting/NodeScript.cs

@@ -28,6 +28,13 @@ namespace Artemis.Core
 
         #endregion
 
+        #region Events
+
+        public event EventHandler<INode>? NodeAdded;
+        public event EventHandler<INode>? NodeRemoved;
+
+        #endregion
+
         #region Constructors
 
         public NodeScript(string name, string description, object? context = null)
@@ -67,11 +74,15 @@ namespace Artemis.Core
         public void AddNode(INode node)
         {
             _nodes.Add(node);
+
+            NodeAdded?.Invoke(this, node);
         }
 
         public void RemoveNode(INode node)
         {
             _nodes.Remove(node);
+
+            NodeRemoved?.Invoke(this, node);
         }
 
         public void Dispose()

src/Artemis.Core/VisualScripting/Pin.cs

@@ -27,6 +27,13 @@ namespace Artemis.Core
 
         #endregion
 
+        #region Events
+
+        public event EventHandler<IPin> PinConnected;
+        public event EventHandler<IPin> PinDisconnected;
+
+        #endregion
+
         #region Constructors
 
         protected Pin(INode node, string name = "")
@@ -46,18 +53,27 @@ namespace Artemis.Core
         {
             _connectedTo.Add(pin);
             OnPropertyChanged(nameof(ConnectedTo));
+
+            PinConnected?.Invoke(this, pin);
         }
 
         public void DisconnectFrom(IPin pin)
         {
             _connectedTo.Remove(pin);
             OnPropertyChanged(nameof(ConnectedTo));
+
+            PinDisconnected?.Invoke(this, pin);
         }
 
         public void DisconnectAll()
         {
+            List<IPin> connectedPins = new(_connectedTo);
+
             _connectedTo.Clear();
             OnPropertyChanged(nameof(ConnectedTo));
+
+            foreach (IPin pin in connectedPins)
+                PinDisconnected?.Invoke(this, pin);
         }
 
         private void OnNodeResetting(object sender, EventArgs e)

src/Artemis.Core/VisualScripting/PinCollection.cs

@@ -20,6 +20,13 @@ namespace Artemis.Core
 
         #endregion
 
+        #region Events
+
+        public event EventHandler<IPin> PinAdded;
+        public event EventHandler<IPin> PinRemoved;
+
+        #endregion
+
         #region Constructors
 
         protected PinCollection(INode node, string name, int initialCount)
@@ -35,14 +42,26 @@ namespace Artemis.Core
 
         #region Methods
 
+
         public IPin AddPin()
         {
             IPin pin = CreatePin();
             _pins.Add(pin);
+
+            PinAdded?.Invoke(this, pin);
+
             return pin;
         }
 
-        public bool Remove(IPin pin) => _pins.Remove(pin);
+        public bool Remove(IPin pin)
+        {
+            bool removed = _pins.Remove(pin);
+
+            if (removed)
+                PinRemoved?.Invoke(this, pin);
+
+            return removed;
+        }
 
         protected abstract IPin CreatePin();