设计了流程接口节点，能够切换本节点数据、目标节点数据，目前还有数据来源相关操作没有实现

Workbench/Converters/InvertableBooleanToVisibilityConverter.cs

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+using System;
+using System.Collections.Generic;
+using System.Globalization;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using System.Windows.Data;
+using System.Windows;
+
+namespace Serein.Workbench.Converters
+{
+    /// <summary>
+    /// 根据bool类型控制可见性
+    /// </summary>
+    [ValueConversion(typeof(bool), typeof(Visibility))]
+    public class InvertableBooleanToVisibilityConverter : IValueConverter
+    {
+        enum Parameters
+        {
+            /// <summary>
+            /// True为可见，False为不可见
+            /// </summary>
+            Normal,
+            /// <summary>
+            /// False为可见，True为不可见
+            /// </summary>
+            Inverted
+        }
+
+        public object Convert(object value, Type targetType,
+                              object parameter, CultureInfo culture)
+        {
+            var boolValue = (bool)value;
+            var direction = (Parameters)Enum.Parse(typeof(Parameters), (string)parameter);
+
+            if (direction == Parameters.Inverted)
+                return !boolValue ? Visibility.Visible : Visibility.Collapsed;
+
+            return boolValue ? Visibility.Visible : Visibility.Collapsed;
+        }
+
+        public object? ConvertBack(object value, Type targetType,
+            object parameter, CultureInfo culture)
+        {
+            return null;
+        }
+    }
+}