支持加载 XSD

Converters/MultiBooleanConjunctionConverter.cs

@@ -0,0 +1,20 @@
+using System;
+using System.Globalization;
+using System.Linq;
+using System.Windows.Data;
+
+namespace HashCalculator.GUI.Converters
+{
+    class MultiBooleanConjunctionConverter : IMultiValueConverter
+    {
+        public object Convert(object[] values, Type targetType, object parameter, CultureInfo culture)
+        {
+            return values.Cast<bool>().Aggregate((a, b) => a && b);
+        }
+
+        public object[] ConvertBack(object value, Type[] targetTypes, object parameter, CultureInfo culture)
+        {
+            throw new NotImplementedException();
+        }
+    }
+}

Converters/MultiValueAggregateConverter.cs

@@ -0,0 +1,45 @@
+using System;
+using System.Collections.Generic;
+using System.Globalization;
+using System.Linq;
+using System.Windows.Data;
+
+namespace HashCalculator.GUI.Converters
+{
+    class MultiValueAggregateConverter : List<IValueConverter?>, IMultiValueConverter
+    {
+        public IMultiValueConverter? Converter { get; set; }
+        public IValueConverter? PostProcess { get; set; }
+
+        public object Convert(object[] values, Type targetType, object parameter, CultureInfo culture)
+        {
+            if (Converter is not { } converter)
+            {
+                throw new InvalidOperationException($"{nameof(Converter)} of {nameof(MultiValueAggregateConverter)} is null");
+            }
+            if (Count > 0)
+            {
+                values = values.ToArray(); // 复制一份
+                var length = Math.Min(Count, values.Length);
+                for (var i = 0; i < length; ++i)
+                {
+                    if (this[i] is IValueConverter c)
+                    {
+                        values[i] = c.Convert(values[i], targetType, parameter, culture);
+                    }
+                }
+            }
+            var result = converter.Convert(values, targetType, parameter, culture);
+            if (PostProcess is not { } postConverter)
+            {
+                return result;
+            }
+            return postConverter.Convert(result, targetType, parameter, culture);
+        }
+
+        public object[] ConvertBack(object value, Type[] targetTypes, object parameter, CultureInfo culture)
+        {
+            throw new NotImplementedException();
+        }
+    }
+}