Create EventToCommand.SearchBar.SearchButtonPressed.cs

NuGet/RapidXaml.MAUI/EventToCommand/EventToCommand.SearchBar.SearchButtonPressed.cs

@@ -0,0 +1,66 @@
+using System.Windows.Input;
+
+namespace RapidXaml;
+
+public partial class EventToCommand : BindableObject
+{
+	public static ICommand GetSearchButtonPressed(BindableObject obj)
+		=> (ICommand)obj.GetValue(SearchButtonPressedProperty);
+
+	public static void SetSearchButtonPressed(BindableObject obj, ICommand value)
+		=> obj.SetValue(SearchButtonPressedProperty, value);
+
+	public static readonly BindableProperty SearchButtonPressedProperty =
+		BindableProperty.CreateAttached("SearchButtonPressed", typeof(ICommand), typeof(EventToCommand), defaultValue: null, propertyChanged: OnSearchButtonPressedChanged);
+
+	private static void OnSearchButtonPressedChanged(BindableObject bindable, object oldValue, object newValue)
+	{
+		if (bindable is SearchBar sb)
+		{
+			if (oldValue is ICommand oldCmd)
+			{
+				for (int i = sb.Behaviors.Count; i >= 0; i--)
+				{
+					if (sb.Behaviors[i] is EventToCommandSearchButtonPressedBehavior oldBehavior && oldBehavior.CommandToInvoke == oldCmd)
+					{
+						sb.Behaviors.Remove(oldBehavior);
+						break;
+					}
+				}
+			}
+
+			if (newValue is ICommand newCmd)
+			{
+				sb.Behaviors.Add(new EventToCommandSearchButtonPressedBehavior { CommandToInvoke = newCmd });
+			}
+		}
+	}
+
+	internal partial class EventToCommandSearchButtonPressedBehavior : Behavior<SearchBar>
+	{
+		public ICommand? CommandToInvoke { get; set; }
+
+		protected override void OnAttachedTo(SearchBar sb)
+		{
+			sb.SearchButtonPressed += OnSearchBarSearchButtonPressed;
+			base.OnAttachedTo(sb);
+		}
+
+		protected override void OnDetachingFrom(SearchBar sb)
+		{
+			sb.SearchButtonPressed -= OnSearchBarSearchButtonPressed;
+			base.OnDetachingFrom(sb);
+		}
+
+		private void OnSearchBarSearchButtonPressed(object? sender, EventArgs e)
+		{
+			if (this.CommandToInvoke != null)
+			{
+				if (this.CommandToInvoke.CanExecute(null))
+				{
+					this.CommandToInvoke.Execute(null);
+				}
+			}
+		}
+	}
+}