From a45ff34249978a3c0d9e7b37ba5c143f6764c703 Mon Sep 17 00:00:00 2001
From: Ionite <dev@ionite.io>
Date: Thu, 7 Dec 2023 17:38:52 -0500
Subject: [PATCH] Add TernaryExtension

---
 .../MarkupExtensions/TernaryExtension.cs      | 42 +++++++++++++++++++
 1 file changed, 42 insertions(+)
 create mode 100644 StabilityMatrix.Avalonia/MarkupExtensions/TernaryExtension.cs

diff --git a/StabilityMatrix.Avalonia/MarkupExtensions/TernaryExtension.cs b/StabilityMatrix.Avalonia/MarkupExtensions/TernaryExtension.cs
new file mode 100644
index 00000000..2654cccc
--- /dev/null
+++ b/StabilityMatrix.Avalonia/MarkupExtensions/TernaryExtension.cs
@@ -0,0 +1,42 @@
+using System;
+using System.Globalization;
+using Avalonia.Data;
+using Avalonia.Data.Converters;
+using Avalonia.Markup.Xaml;
+using Avalonia.Markup.Xaml.MarkupExtensions;
+
+namespace StabilityMatrix.Avalonia.MarkupExtensions;
+
+/// <summary>
+/// https://github.com/AvaloniaUI/Avalonia/discussions/7408
+/// </summary>
+/// <example>
+/// <code>{e:Ternary SomeProperty, True=1, False=0}</code>
+/// </example>
+public class TernaryExtension : MarkupExtension
+{
+    public string Path { get; set; }
+
+    public Type Type { get; set; }
+
+    public object? True { get; set; }
+
+    public object? False { get; set; }
+
+    public override object ProvideValue(IServiceProvider serviceProvider)
+    {
+        var cultureInfo = CultureInfo.GetCultureInfo("en-US");
+        var binding = new ReflectionBindingExtension(Path)
+        {
+            Mode = BindingMode.OneWay,
+            Converter = new FuncValueConverter<bool, object?>(
+                isTrue =>
+                    isTrue
+                        ? Convert.ChangeType(True, Type, cultureInfo.NumberFormat)
+                        : Convert.ChangeType(False, Type, cultureInfo.NumberFormat)
+            )
+        };
+
+        return binding.ProvideValue(serviceProvider);
+    }
+}