first commit

2026-09-03 04:45:36 +03:00
commit d5f52cc3d3
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+using System;
+using System.Windows;
+using System.Windows.Interactivity;
+using ICSharpCode.AvalonEdit;
+using ICSharpCode.AvalonEdit.Document;
+using ICSharpCode.AvalonEdit.Editing;
+
+namespace ClassicAssist.UI.Misc
+{
+    public class AvalonBindingBehaviour : Behavior<TextEditor>
+    {
+        public static readonly DependencyProperty DocumentBindingProperty = DependencyProperty.Register(
+            "DocumentBinding", typeof( TextDocument ), typeof( AvalonBindingBehaviour ),
+            new FrameworkPropertyMetadata( default( TextDocument ),
+                FrameworkPropertyMetadataOptions.BindsTwoWayByDefault, PropertyChangedCallback ) );
+
+        public static readonly DependencyProperty CaretBindingProperty = DependencyProperty.Register( "CaretBinding",
+            typeof( int ), typeof( AvalonBindingBehaviour ),
+            new FrameworkPropertyMetadata( default( int ), FrameworkPropertyMetadataOptions.BindsTwoWayByDefault,
+                PropertyChangedCallback ) );
+
+        public int CaretBinding
+        {
+            get => (int) GetValue( CaretBindingProperty );
+            set => SetValue( CaretBindingProperty, value );
+        }
+
+        public TextDocument DocumentBinding
+        {
+            get => (TextDocument) GetValue( DocumentBindingProperty );
+            set => SetValue( DocumentBindingProperty, value );
+        }
+
+        private static void PropertyChangedCallback( DependencyObject d, DependencyPropertyChangedEventArgs e )
+        {
+        }
+
+        protected override void OnAttached()
+        {
+            base.OnAttached();
+
+            AssociatedObject.Loaded += OnLoaded;
+            AssociatedObject.TextArea.Caret.PositionChanged += CaretOnPositionChanged;
+        }
+
+        protected override void OnDetaching()
+        {
+            base.OnDetaching();
+
+            AssociatedObject.Loaded -= OnLoaded;
+            AssociatedObject.TextArea.Caret.PositionChanged -= CaretOnPositionChanged;
+        }
+
+        private void CaretOnPositionChanged( object sender, EventArgs e )
+        {
+            if ( sender is Caret caret )
+            {
+                CaretBinding = caret.Offset;
+            }
+        }
+
+        private void OnLoaded( object sender, RoutedEventArgs args )
+        {
+            if ( sender is TextEditor textEditor )
+            {
+                DocumentBinding = textEditor.Document;
+            }
+        }
+    }
+}