feat: commit content which I don't know when I create them

BallanceTasEditor/Converters/GenericConverter.cs

@@ -4,20 +4,20 @@ using System.Globalization;
 using System.Linq;
 using System.Text;
 using System.Threading.Tasks;
+using System.Windows;
 using System.Windows.Data;
 
 namespace BallanceTasEditor.Converters {
-    public class GenericConverter<TIn, TOut> : IValueConverter {
-
-        private readonly Func<TIn, TOut> converter;
-
-        public GenericConverter(Func<TIn, TOut> converter) { this.converter = converter; }
+    [ValueConversion(typeof(int), typeof(string))]
+    public class FpsConverter : IValueConverter {
+        public static FpsConverter Instance = new FpsConverter();
 
         public object Convert(object value, Type targetType, object parameter, CultureInfo culture) {
-            if (value is TIn t) {
-                return converter(t);
+            if (value is int tv) {
+                if (tv <= 0) return DependencyProperty.UnsetValue;
+                else return Utils.FpsConverter.ToDelta(tv).ToString();
             } else {
-                return Binding.DoNothing;
+                return DependencyProperty.UnsetValue;
             }
         }
 
@@ -26,8 +26,25 @@ namespace BallanceTasEditor.Converters {
         }
     }
 
-    public static class ConverterWarehouse {
-        public static readonly GenericConverter<int, string> FpsConverter =
-            new GenericConverter<int, string>((v) => Utils.FpsConverter.ToDelta(v).ToString());
+    /// <summary>
+    /// 将IsEnable转换为Visibility。
+    /// </summary>
+    [ValueConversion(typeof(bool), typeof(Visibility))]
+    public class VisibilityConverter : IValueConverter {
+        public static VisibilityConverter Instance = new VisibilityConverter();
+
+        public object Convert(object value, Type targetType, object parameter, CultureInfo culture) {
+            if (value is bool bv) {
+                if (bv) return Visibility.Visible;
+                else return Visibility.Collapsed;
+            } else {
+                return DependencyProperty.UnsetValue;
+            }
+        }
+
+        public object ConvertBack(object value, Type targetType, object parameter, CultureInfo culture) {
+            return Binding.DoNothing;
+        }
     }
+
 }

BallanceTasEditor/Converters/StringifyConverter.cs

@@ -0,0 +1,35 @@
+using System;
+using System.Collections.Generic;
+using System.Globalization;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using System.Windows;
+using System.Windows.Data;
+
+namespace BallanceTasEditor.Converters {
+
+    [ValueConversion(typeof(int?), typeof(string))]
+    public class StringifyIntegerConverter : IValueConverter {
+        public static StringifyIntegerConverter Instance = new StringifyIntegerConverter();
+
+        public object Convert(object value, Type targetType, object parameter, CultureInfo culture) {
+            if (value is null) {
+                return "";
+            } else if (value is int iv) {
+                return iv.ToString();
+            } else {
+                return DependencyProperty.UnsetValue;
+            }
+        }
+
+        public object ConvertBack(object value, Type targetType, object parameter, CultureInfo culture) {
+            if (value is string s) {
+                if (int.TryParse(s, out int iv)) return iv;
+                else return null;
+            } else {
+                return DependencyProperty.UnsetValue;
+            }
+        }
+    }
+}