Data bindings - Update UI on registration changes

Data bindings - Tweaked UI tabs to handle a large amount of properties better
Color gradient property - Update data binding properties on stop add/remove

src/Artemis.Core/DefaultTypes/Properties/ColorGradientLayerProperty.cs

@@ -1,10 +1,13 @@
-using SkiaSharp;
+using System.ComponentModel;
+using SkiaSharp;
 
 namespace Artemis.Core
 {
     /// <inheritdoc />
     public class ColorGradientLayerProperty : LayerProperty<ColorGradient>
     {
+        private ColorGradient? _subscribedGradient;
+
         internal ColorGradientLayerProperty()
         {
             KeyframesSupported = false;
@@ -53,9 +56,23 @@ namespace Artemis.Core
             if (BaseValue == null)
                 BaseValue = DefaultValue ?? new ColorGradient();
 
+            if (_subscribedGradient != BaseValue)
+            {
+                if (_subscribedGradient != null) 
+                    _subscribedGradient.PropertyChanged -= SubscribedGradientOnPropertyChanged;
+                _subscribedGradient = BaseValue;
+                _subscribedGradient.PropertyChanged += SubscribedGradientOnPropertyChanged;
+            }
+            
             CreateDataBindingRegistrations();
         }
 
+        private void SubscribedGradientOnPropertyChanged(object? sender, PropertyChangedEventArgs e)
+        {
+            if (CurrentValue.Stops.Count != GetAllDataBindingRegistrations().Count)
+                CreateDataBindingRegistrations();
+        }
+
         #region Overrides of LayerProperty<ColorGradient>
 
         /// <inheritdoc />

src/Artemis.Core/Models/Profile/LayerProperties/ILayerProperty.cs

@@ -97,6 +97,16 @@ namespace Artemis.Core
         /// </summary>
         public event EventHandler<LayerPropertyEventArgs>? KeyframeRemoved;
 
+        /// <summary>
+        ///     Occurs when a data binding property has been added
+        /// </summary>
+        public event EventHandler<LayerPropertyEventArgs>? DataBindingPropertyRegistered;
+
+        /// <summary>
+        ///     Occurs when all data binding properties have been removed
+        /// </summary>
+        public event EventHandler<LayerPropertyEventArgs>? DataBindingPropertiesCleared;
+
         /// <summary>
         ///     Occurs when a data binding has been enabled
         /// </summary>

src/Artemis.Core/Models/Profile/LayerProperties/LayerProperty.cs

@@ -419,6 +419,8 @@ namespace Artemis.Core
 
             DataBindingRegistration<T, TProperty> registration = new(this, converter, getter, setter, displayName);
             _dataBindingRegistrations.Add(registration);
+
+            OnDataBindingPropertyRegistered();
             return registration;
         }
 
@@ -431,6 +433,7 @@ namespace Artemis.Core
                 throw new ObjectDisposedException("LayerProperty");
 
             _dataBindingRegistrations.Clear();
+            OnDataBindingPropertiesCleared();
         }
 
         /// <summary>
@@ -667,6 +670,12 @@ namespace Artemis.Core
         /// <inheritdoc />
         public event EventHandler<LayerPropertyEventArgs>? KeyframeRemoved;
 
+        /// <inheritdoc />
+        public event EventHandler<LayerPropertyEventArgs>? DataBindingPropertyRegistered;
+        
+        /// <inheritdoc />
+        public event EventHandler<LayerPropertyEventArgs>? DataBindingPropertiesCleared;
+
         /// <inheritdoc />
         public event EventHandler<LayerPropertyEventArgs>? DataBindingEnabled;
 
@@ -722,6 +731,22 @@ namespace Artemis.Core
             KeyframeRemoved?.Invoke(this, new LayerPropertyEventArgs(this));
         }
 
+        /// <summary>
+        ///     Invokes the <see cref="DataBindingPropertyRegistered" /> event
+        /// </summary>
+        protected virtual void OnDataBindingPropertyRegistered()
+        {
+            DataBindingPropertyRegistered?.Invoke(this, new LayerPropertyEventArgs(this));
+        }
+
+        /// <summary>
+        ///     Invokes the <see cref="DataBindingDisabled" /> event
+        /// </summary>
+        protected virtual void OnDataBindingPropertiesCleared()
+        {
+            DataBindingPropertiesCleared?.Invoke(this, new LayerPropertyEventArgs(this));
+        }
+
         /// <summary>
         ///     Invokes the <see cref="DataBindingEnabled" /> event
         /// </summary>