Add project files.

2022-11-01 15:26:08 +00:00
parent daa7b59f22
commit 7e4f880821
408 changed files with 16863 additions and 0 deletions
@@ -0,0 +1,71 @@
+using System.Reflection;
+using System.Windows.Markup;
+using System.Windows;
+using System.Xaml;
+
+namespace TheXamlGuy.UI.WPF;
+
+[MarkupExtensionReturnType(typeof(Delegate))]
+public class TriggerExtension : MarkupExtension
+{
+    public DependencyObject? TargetObject { get; protected set; }
+
+    protected object? TargetInvoke { get; private set; }
+
+    public void Invoke(object sender, EventArgs args)
+    {
+        OnInvoked(sender, args);
+    }
+
+    public override object ProvideValue(IServiceProvider serviceProvider)
+    {
+        if (serviceProvider.GetService(typeof(IProvideValueTarget)) is IProvideValueTarget target)
+        {
+            if (TargetObject is null)
+            {
+                if (target.TargetObject is DependencyObject dependencyObject)
+                {
+                    TargetObject = dependencyObject;
+                }
+                else if (serviceProvider.GetService(typeof(IRootObjectProvider)) is IRootObjectProvider root)
+                {
+                    TargetObject = (DependencyObject)root.RootObject;
+                }
+            }
+
+            TargetInvoke = target.TargetProperty;
+
+            MethodInfo invokeMethod = GetType().GetMethod("Invoke", BindingFlags.Instance | BindingFlags.Public)!;
+            if (invokeMethod is null)
+            {
+                return this;
+            }
+
+            switch (TargetInvoke)
+            {
+                case EventInfo info:
+                    return Delegate.CreateDelegate(info.EventHandlerType!, this, invokeMethod);
+                case MethodInfo methodInfo:
+                    {
+                        if (methodInfo.GetParameters() is ParameterInfo[] methodParameters && methodParameters is { Length: 2 })
+                        {
+                            return Delegate.CreateDelegate(methodParameters[1].ParameterType, this, invokeMethod);
+                        }
+
+                        break;
+                    }
+
+                default:
+                    break;
+            }
+
+        }
+
+        return this;
+    }
+
+    protected virtual void OnInvoked(object sender, EventArgs args)
+    {
+
+    }
+}