Add template selectors to the editor

Nodify/Editor/NodifyEditor.cs

@@ -259,8 +259,11 @@ private void ApplyRenderingOptimizations()
         public static readonly DependencyProperty BringIntoViewMaxDurationProperty = DependencyProperty.Register(nameof(BringIntoViewMaxDuration), typeof(double), typeof(NodifyEditor), new FrameworkPropertyMetadata(BoxValue.Double1));
         public static readonly DependencyProperty DisplayConnectionsOnTopProperty = DependencyProperty.Register(nameof(DisplayConnectionsOnTop), typeof(bool), typeof(NodifyEditor), new FrameworkPropertyMetadata(BoxValue.False));
         public static readonly DependencyProperty ConnectionTemplateProperty = DependencyProperty.Register(nameof(ConnectionTemplate), typeof(DataTemplate), typeof(NodifyEditor));
+        public static readonly DependencyProperty ConnectionTemplateSelectorProperty = DependencyProperty.Register(nameof(ConnectionTemplateSelector), typeof(DataTemplateSelector), typeof(NodifyEditor));
         public static readonly DependencyProperty DecoratorTemplateProperty = DependencyProperty.Register(nameof(DecoratorTemplate), typeof(DataTemplate), typeof(NodifyEditor));
+        public static readonly DependencyProperty DecoratorTemplateSelectorProperty = DependencyProperty.Register(nameof(DecoratorTemplateSelector), typeof(DataTemplateSelector), typeof(NodifyEditor));
         public static readonly DependencyProperty PendingConnectionTemplateProperty = DependencyProperty.Register(nameof(PendingConnectionTemplate), typeof(DataTemplate), typeof(NodifyEditor));
+        public static readonly DependencyProperty PendingConnectionTemplateSelectorProperty = DependencyProperty.Register(nameof(PendingConnectionTemplateSelector), typeof(DataTemplateSelector), typeof(NodifyEditor));
         public static readonly DependencyProperty DecoratorContainerStyleProperty = DependencyProperty.Register(nameof(DecoratorContainerStyle), typeof(Style), typeof(NodifyEditor));
 
         /// <summary>
@@ -300,6 +303,15 @@ public DataTemplate ConnectionTemplate
             set => SetValue(ConnectionTemplateProperty, value);
         }
 
+        /// <summary>
+        /// Gets or sets the custom logic for choosing a template for <see cref="BaseConnection"/>.
+        /// </summary>
+        public DataTemplateSelector ConnectionTemplateSelector
+        {
+            get => (DataTemplateSelector)GetValue(ConnectionTemplateSelectorProperty);
+            set => SetValue(ConnectionTemplateSelectorProperty, value);
+        }
+
         /// <summary>
         /// Gets or sets the <see cref="DataTemplate"/> to use when generating a new <see cref="DecoratorContainer"/>.
         /// </summary>
@@ -309,6 +321,15 @@ public DataTemplate DecoratorTemplate
             set => SetValue(DecoratorTemplateProperty, value);
         }
 
+        /// <summary>
+        /// Gets or sets the custom logic for choosing a template for <see cref="DecoratorContainer"/>.
+        /// </summary>
+        public DataTemplateSelector DecoratorTemplateSelector
+        {
+            get => (DataTemplateSelector)GetValue(DecoratorTemplateSelectorProperty);
+            set => SetValue(DecoratorTemplateSelectorProperty, value);
+        }
+
         /// <summary>
         /// Gets or sets the <see cref="DataTemplate"/> to use for the <see cref="PendingConnection"/>.
         /// </summary>
@@ -318,6 +339,15 @@ public DataTemplate PendingConnectionTemplate
             set => SetValue(PendingConnectionTemplateProperty, value);
         }
 
+        /// <summary>
+        /// Gets or sets the custom logic for choosing a template for <see cref="PendingConnection"/>.
+        /// </summary>
+        public DataTemplateSelector PendingConnectionTemplateSelector
+        {
+            get => (DataTemplateSelector)GetValue(PendingConnectionTemplateSelectorProperty);
+            set => SetValue(PendingConnectionTemplateSelectorProperty, value);
+        }
+
         /// <summary>
         /// Gets or sets the style to use for the <see cref="DecoratorContainer"/>.
         /// </summary>

Nodify/Themes/Styles/NodifyEditor.xaml

@@ -79,6 +79,7 @@
                                                              SelectedItems="{TemplateBinding SelectedConnections}"
                                                              CanSelectMultipleItems="{TemplateBinding CanSelectMultipleConnections}"
                                                              ItemTemplate="{TemplateBinding ConnectionTemplate}"
+                                                             ItemTemplateSelector="{TemplateBinding ConnectionTemplateSelector}"
                                                              IsTabStop="False">
                                 <local:ConnectionsMultiSelector.Style>
                                     <Style TargetType="local:ConnectionsMultiSelector">
@@ -172,6 +173,7 @@
                             <local:DecoratorsControl ItemsSource="{TemplateBinding Decorators}"
                                                      ItemContainerStyle="{TemplateBinding DecoratorContainerStyle}"
                                                      ItemTemplate="{TemplateBinding DecoratorTemplate}"
+                                                     ItemTemplateSelector="{TemplateBinding DecoratorTemplateSelector}"
                                                      IsTabStop="False">
                                 <local:DecoratorsControl.ItemsPanel>
                                     <ItemsPanelTemplate>