Make IsActivated property public in Window.cs

src/Controls/src/Core/PublicAPI/net-android/PublicAPI.Unshipped.txt

@@ -222,6 +222,7 @@ Microsoft.Maui.Controls.WebViewWebResourceRequestedEventArgs.SetResponse(int cod
 Microsoft.Maui.Controls.WebViewWebResourceRequestedEventArgs.Uri.get -> System.Uri!
 Microsoft.Maui.Controls.WebViewWebResourceRequestedEventArgs.WebViewWebResourceRequestedEventArgs(Microsoft.Maui.Controls.PlatformWebViewWebResourceRequestedEventArgs! platformArgs) -> void
 Microsoft.Maui.Controls.WebViewWebResourceRequestedEventArgs.WebViewWebResourceRequestedEventArgs(System.Uri! uri, string! method) -> void
+Microsoft.Maui.Controls.Window.IsActivated.get -> bool
 Microsoft.Maui.Controls.Window.IsMaximizable.get -> bool
 Microsoft.Maui.Controls.Window.IsMaximizable.set -> void
 Microsoft.Maui.Controls.Window.IsMinimizable.get -> bool
@@ -465,6 +466,7 @@ static readonly Microsoft.Maui.Controls.Border.SafeAreaEdgesProperty -> Microsof
 ~static readonly Microsoft.Maui.Controls.TemplatedView.IsClippedToBoundsProperty -> Microsoft.Maui.Controls.BindableProperty
 ~static readonly Microsoft.Maui.Controls.TemplatedView.PaddingProperty -> Microsoft.Maui.Controls.BindableProperty
 ~static readonly Microsoft.Maui.Controls.TimePicker.IsOpenProperty -> Microsoft.Maui.Controls.BindableProperty
+static readonly Microsoft.Maui.Controls.Window.IsActivatedProperty -> Microsoft.Maui.Controls.BindableProperty!
 static readonly Microsoft.Maui.Controls.Window.IsMaximizableProperty -> Microsoft.Maui.Controls.BindableProperty!
 static readonly Microsoft.Maui.Controls.Window.IsMinimizableProperty -> Microsoft.Maui.Controls.BindableProperty!
 ~virtual Microsoft.Maui.Controls.BindableProperty.BindingPropertyChangedDelegate.Invoke(Microsoft.Maui.Controls.BindableObject bindable, object oldValue, object newValue) -> void

src/Controls/src/Core/PublicAPI/net-ios/PublicAPI.Unshipped.txt

@@ -207,6 +207,7 @@ Microsoft.Maui.Controls.WebViewWebResourceRequestedEventArgs.SetResponse(int cod
 Microsoft.Maui.Controls.WebViewWebResourceRequestedEventArgs.Uri.get -> System.Uri!
 Microsoft.Maui.Controls.WebViewWebResourceRequestedEventArgs.WebViewWebResourceRequestedEventArgs(Microsoft.Maui.Controls.PlatformWebViewWebResourceRequestedEventArgs! platformArgs) -> void
 Microsoft.Maui.Controls.WebViewWebResourceRequestedEventArgs.WebViewWebResourceRequestedEventArgs(System.Uri! uri, string! method) -> void
+Microsoft.Maui.Controls.Window.IsActivated.get -> bool
 Microsoft.Maui.Controls.Window.IsMaximizable.get -> bool
 Microsoft.Maui.Controls.Window.IsMaximizable.set -> void
 Microsoft.Maui.Controls.Window.IsMinimizable.get -> bool
@@ -453,6 +454,7 @@ static readonly Microsoft.Maui.Controls.Border.SafeAreaEdgesProperty -> Microsof
 ~static readonly Microsoft.Maui.Controls.TemplatedView.IsClippedToBoundsProperty -> Microsoft.Maui.Controls.BindableProperty
 ~static readonly Microsoft.Maui.Controls.TemplatedView.PaddingProperty -> Microsoft.Maui.Controls.BindableProperty
 ~static readonly Microsoft.Maui.Controls.TimePicker.IsOpenProperty -> Microsoft.Maui.Controls.BindableProperty
+static readonly Microsoft.Maui.Controls.Window.IsActivatedProperty -> Microsoft.Maui.Controls.BindableProperty!
 static readonly Microsoft.Maui.Controls.Window.IsMaximizableProperty -> Microsoft.Maui.Controls.BindableProperty!
 static readonly Microsoft.Maui.Controls.Window.IsMinimizableProperty -> Microsoft.Maui.Controls.BindableProperty!
 ~virtual Microsoft.Maui.Controls.BindableProperty.BindingPropertyChangedDelegate.Invoke(Microsoft.Maui.Controls.BindableObject bindable, object oldValue, object newValue) -> void

src/Controls/src/Core/PublicAPI/net-maccatalyst/PublicAPI.Unshipped.txt

@@ -207,6 +207,7 @@ Microsoft.Maui.Controls.WebViewWebResourceRequestedEventArgs.SetResponse(int cod
 Microsoft.Maui.Controls.WebViewWebResourceRequestedEventArgs.Uri.get -> System.Uri!
 Microsoft.Maui.Controls.WebViewWebResourceRequestedEventArgs.WebViewWebResourceRequestedEventArgs(Microsoft.Maui.Controls.PlatformWebViewWebResourceRequestedEventArgs! platformArgs) -> void
 Microsoft.Maui.Controls.WebViewWebResourceRequestedEventArgs.WebViewWebResourceRequestedEventArgs(System.Uri! uri, string! method) -> void
+Microsoft.Maui.Controls.Window.IsActivated.get -> bool
 Microsoft.Maui.Controls.Window.IsMaximizable.get -> bool
 Microsoft.Maui.Controls.Window.IsMaximizable.set -> void
 Microsoft.Maui.Controls.Window.IsMinimizable.get -> bool
@@ -453,6 +454,7 @@ static readonly Microsoft.Maui.Controls.Border.SafeAreaEdgesProperty -> Microsof
 ~static readonly Microsoft.Maui.Controls.TemplatedView.IsClippedToBoundsProperty -> Microsoft.Maui.Controls.BindableProperty
 ~static readonly Microsoft.Maui.Controls.TemplatedView.PaddingProperty -> Microsoft.Maui.Controls.BindableProperty
 ~static readonly Microsoft.Maui.Controls.TimePicker.IsOpenProperty -> Microsoft.Maui.Controls.BindableProperty
+static readonly Microsoft.Maui.Controls.Window.IsActivatedProperty -> Microsoft.Maui.Controls.BindableProperty!
 static readonly Microsoft.Maui.Controls.Window.IsMaximizableProperty -> Microsoft.Maui.Controls.BindableProperty!
 static readonly Microsoft.Maui.Controls.Window.IsMinimizableProperty -> Microsoft.Maui.Controls.BindableProperty!
 ~virtual Microsoft.Maui.Controls.BindableProperty.BindingPropertyChangedDelegate.Invoke(Microsoft.Maui.Controls.BindableObject bindable, object oldValue, object newValue) -> void

src/Controls/src/Core/PublicAPI/net-windows/PublicAPI.Unshipped.txt

@@ -216,6 +216,7 @@ Microsoft.Maui.Controls.WebViewWebResourceRequestedEventArgs.SetResponse(int cod
 Microsoft.Maui.Controls.WebViewWebResourceRequestedEventArgs.Uri.get -> System.Uri!
 Microsoft.Maui.Controls.WebViewWebResourceRequestedEventArgs.WebViewWebResourceRequestedEventArgs(Microsoft.Maui.Controls.PlatformWebViewWebResourceRequestedEventArgs! platformArgs) -> void
 Microsoft.Maui.Controls.WebViewWebResourceRequestedEventArgs.WebViewWebResourceRequestedEventArgs(System.Uri! uri, string! method) -> void
+Microsoft.Maui.Controls.Window.IsActivated.get -> bool
 Microsoft.Maui.Controls.Window.IsMaximizable.get -> bool
 Microsoft.Maui.Controls.Window.IsMaximizable.set -> void
 Microsoft.Maui.Controls.Window.IsMinimizable.get -> bool
@@ -456,6 +457,7 @@ static readonly Microsoft.Maui.Controls.Border.SafeAreaEdgesProperty -> Microsof
 ~static readonly Microsoft.Maui.Controls.TemplatedView.IsClippedToBoundsProperty -> Microsoft.Maui.Controls.BindableProperty
 ~static readonly Microsoft.Maui.Controls.TemplatedView.PaddingProperty -> Microsoft.Maui.Controls.BindableProperty
 ~static readonly Microsoft.Maui.Controls.TimePicker.IsOpenProperty -> Microsoft.Maui.Controls.BindableProperty
+static readonly Microsoft.Maui.Controls.Window.IsActivatedProperty -> Microsoft.Maui.Controls.BindableProperty!
 static readonly Microsoft.Maui.Controls.Window.IsMaximizableProperty -> Microsoft.Maui.Controls.BindableProperty!
 static readonly Microsoft.Maui.Controls.Window.IsMinimizableProperty -> Microsoft.Maui.Controls.BindableProperty!
 ~virtual Microsoft.Maui.Controls.BindableProperty.BindingPropertyChangedDelegate.Invoke(Microsoft.Maui.Controls.BindableObject bindable, object oldValue, object newValue) -> void

src/Controls/src/Core/PublicAPI/net/PublicAPI.Unshipped.txt

@@ -199,6 +199,7 @@ Microsoft.Maui.Controls.WebViewWebResourceRequestedEventArgs.SetResponse(int cod
 Microsoft.Maui.Controls.WebViewWebResourceRequestedEventArgs.Uri.get -> System.Uri!
 Microsoft.Maui.Controls.WebViewWebResourceRequestedEventArgs.WebViewWebResourceRequestedEventArgs(Microsoft.Maui.Controls.PlatformWebViewWebResourceRequestedEventArgs! platformArgs) -> void
 Microsoft.Maui.Controls.WebViewWebResourceRequestedEventArgs.WebViewWebResourceRequestedEventArgs(System.Uri! uri, string! method) -> void
+Microsoft.Maui.Controls.Window.IsActivated.get -> bool
 Microsoft.Maui.Controls.Window.IsMaximizable.get -> bool
 Microsoft.Maui.Controls.Window.IsMaximizable.set -> void
 Microsoft.Maui.Controls.Window.IsMinimizable.get -> bool
@@ -435,6 +436,7 @@ static readonly Microsoft.Maui.Controls.Border.SafeAreaEdgesProperty -> Microsof
 ~static readonly Microsoft.Maui.Controls.TemplatedView.IsClippedToBoundsProperty -> Microsoft.Maui.Controls.BindableProperty
 ~static readonly Microsoft.Maui.Controls.TemplatedView.PaddingProperty -> Microsoft.Maui.Controls.BindableProperty
 ~static readonly Microsoft.Maui.Controls.TimePicker.IsOpenProperty -> Microsoft.Maui.Controls.BindableProperty
+static readonly Microsoft.Maui.Controls.Window.IsActivatedProperty -> Microsoft.Maui.Controls.BindableProperty!
 static readonly Microsoft.Maui.Controls.Window.IsMaximizableProperty -> Microsoft.Maui.Controls.BindableProperty!
 static readonly Microsoft.Maui.Controls.Window.IsMinimizableProperty -> Microsoft.Maui.Controls.BindableProperty!
 ~virtual Microsoft.Maui.Controls.BindableProperty.BindingPropertyChangedDelegate.Invoke(Microsoft.Maui.Controls.BindableObject bindable, object oldValue, object newValue) -> void

src/Controls/src/Core/PublicAPI/netstandard/PublicAPI.Unshipped.txt

@@ -199,6 +199,7 @@ Microsoft.Maui.Controls.WebViewWebResourceRequestedEventArgs.SetResponse(int cod
 Microsoft.Maui.Controls.WebViewWebResourceRequestedEventArgs.Uri.get -> System.Uri!
 Microsoft.Maui.Controls.WebViewWebResourceRequestedEventArgs.WebViewWebResourceRequestedEventArgs(Microsoft.Maui.Controls.PlatformWebViewWebResourceRequestedEventArgs! platformArgs) -> void
 Microsoft.Maui.Controls.WebViewWebResourceRequestedEventArgs.WebViewWebResourceRequestedEventArgs(System.Uri! uri, string! method) -> void
+Microsoft.Maui.Controls.Window.IsActivated.get -> bool
 Microsoft.Maui.Controls.Window.IsMaximizable.get -> bool
 Microsoft.Maui.Controls.Window.IsMaximizable.set -> void
 Microsoft.Maui.Controls.Window.IsMinimizable.get -> bool
@@ -435,6 +436,7 @@ static readonly Microsoft.Maui.Controls.Border.SafeAreaEdgesProperty -> Microsof
 ~static readonly Microsoft.Maui.Controls.TemplatedView.IsClippedToBoundsProperty -> Microsoft.Maui.Controls.BindableProperty
 ~static readonly Microsoft.Maui.Controls.TemplatedView.PaddingProperty -> Microsoft.Maui.Controls.BindableProperty
 ~static readonly Microsoft.Maui.Controls.TimePicker.IsOpenProperty -> Microsoft.Maui.Controls.BindableProperty
+static readonly Microsoft.Maui.Controls.Window.IsActivatedProperty -> Microsoft.Maui.Controls.BindableProperty!
 static readonly Microsoft.Maui.Controls.Window.IsMaximizableProperty -> Microsoft.Maui.Controls.BindableProperty!
 static readonly Microsoft.Maui.Controls.Window.IsMinimizableProperty -> Microsoft.Maui.Controls.BindableProperty!
 ~virtual Microsoft.Maui.Controls.BindableProperty.BindingPropertyChangedDelegate.Invoke(Microsoft.Maui.Controls.BindableObject bindable, object oldValue, object newValue) -> void

src/Controls/src/Core/Window/Window.cs

@@ -14,6 +14,12 @@ namespace Microsoft.Maui.Controls
 	[ContentProperty(nameof(Page))]
 	public partial class Window : NavigableElement, IWindow, IToolbarElement, IMenuBarElement, IFlowDirectionController, IWindowController
 	{
+		static readonly BindablePropertyKey IsActivatedPropertyKey = 
+			BindableProperty.CreateReadOnly(nameof(IsActivated), typeof(bool), typeof(Window), false, propertyChanged: OnIsActivatedPropertyChanged);
+
+		/// <summary>Bindable property for <see cref="IsActivated"/>.</summary>
+		public static readonly BindableProperty IsActivatedProperty = IsActivatedPropertyKey.BindableProperty;
+
 		/// <summary>Bindable property for <see cref="Title"/>.</summary>
 		public static readonly BindableProperty TitleProperty = BindableProperty.Create(
 			nameof(Title), typeof(string), typeof(Window), default(string?));
@@ -76,7 +82,6 @@ public partial class Window : NavigableElement, IWindow, IToolbarElement, IMenuB
 		List<IVisualTreeElement> _visualChildren;
 		Toolbar? _toolbar;
 		MenuBarTracker _menuBarTracker;
-		bool _isActivated;
 
 		IToolbar? IToolbarElement.Toolbar => Toolbar;
 		internal Toolbar? Toolbar
@@ -117,6 +122,12 @@ public string? Title
 			set => SetValue(TitleProperty, value);
 		}
 
+		public bool IsActivated
+		{
+			get => (bool)GetValue(IsActivatedProperty);
+			private set => SetValue(IsActivatedPropertyKey, value);
+		}
+
 		string? ITitledElement.Title => Title ?? (Page as Shell)?.Title;
 
 		public Page? Page
@@ -324,24 +335,6 @@ public bool RemoveOverlay(IWindowOverlay overlay)
 		internal IMauiContext MauiContext =>
 			Handler?.MauiContext ?? throw new InvalidOperationException("MauiContext is null.");
 
-		internal bool IsActivated
-		{
-			get
-			{
-				return _isActivated;
-			}
-			private set
-			{
-				if (_isActivated == value)
-					return;
-
-				_isActivated = value;
-
-				if (value)
-					SendWindowAppearing();
-			}
-		}
-
 		internal bool IsDestroyed { get; private set; }
 		internal bool IsCreated { get; private set; }
 
@@ -634,6 +627,15 @@ static void OnPageChanging(BindableObject bindable, object oldValue, object newV
 				oldPage.SendDisappearing();
 		}
 
+		static void OnIsActivatedPropertyChanged(BindableObject bindable, object oldValue, object newValue)
+		{
+			var window = (Window)bindable;
+			if ((bool)newValue)
+			{
+				window.SendWindowAppearing();
+			}
+		}
+
 		void OnPageChanged(Page? oldPage, Page? newPage)
 		{
 			if (oldPage != null)

src/Controls/tests/Core.UnitTests/WindowsTests.cs

@@ -3,6 +3,7 @@
 using System.Collections.Generic;
 using System.Linq;
 using System.Reflection;
+using System.Threading;
 using System.Threading.Tasks;
 using Microsoft.Maui.Graphics;
 using Xunit;
@@ -649,6 +650,74 @@ public void PreviousShellDisconnectsFromWindowPropertyChanged()
 			Assert.False(fired);
 		}
 
+		[Fact]
+		public void CreateWindowKeepIsActivatedIsFalse()
+		{
+			var app = new TestApp();
+
+			var window = app.CreateWindow();
+
+			Assert.False(window.IsActivated);
+		}
+
+		[Fact]
+		public void ActivateWindowWillSetIsActiveToTrue()
+		{
+			var app = new TestApp();
+
+			var window = app.CreateWindow();
+
+			(window as IWindow).Activated();
+
+			Assert.True(window.IsActivated);
+		}
+
+		[Fact]
+		public void ActivateWindowAndDeactivateWillSetIsActiveToFalse()
+		{
+			var app = new TestApp();
+
+			var window = app.CreateWindow();
+
+			(window as IWindow).Activated();
+
+			Assert.True(window.IsActivated);
+
+			(window as IWindow).Deactivated();
+
+			Assert.False(window.IsActivated);
+		}
+
+		[Fact]
+		public async Task ActivateWindowSendAppearingOnPage()
+		{
+			var app = new TestApp();
+
+			var window = app.CreateWindow();
+
+			var page = new ContentPage();
+
+			window.Page = page;
+
+			page.SendDisappearing();
+
+			var tcs = new TaskCompletionSource<bool>();
+
+			using var cts = new CancellationTokenSource();
+			using var _ = cts.Token.Register(() => tcs.SetResult(false));
+
+			page.Appearing += (_, __) =>
+			{
+				tcs.SetResult(true);
+			};
+
+			cts.CancelAfter(TimeSpan.FromSeconds(5));
+
+			(window as IWindow).Activated();
+
+			Assert.True(await tcs.Task);
+		}
+
 		[Theory]
 		[InlineData(double.NaN, double.NaN, double.NaN, double.NaN, double.NaN, double.NaN, double.NaN, double.NaN)]
 		[InlineData(-1, -1, -1, -1, -1, -1, double.NaN, double.NaN)]
@@ -766,5 +835,34 @@ public async Task TwoKeysSameWindow()
 			Assert.Same(window, actual);
 			Assert.Empty(table);
 		}
+
+		[Fact]
+		public void BindingIsActivatedProperty()
+		{
+			var app = new TestApp();
+			var page = new ContentPage();
+			var window = app.CreateWindow();
+			window.Page = page;
+
+			var vm = new ViewModel();
+			window.BindingContext = vm;
+			window.SetBinding(Window.IsActivatedProperty, nameof(vm.IsWindowActive));
+
+			(window as IWindow).Activated();
+
+			Assert.True(vm.IsWindowActive);
+
+			(window as IWindow).Deactivated();
+
+			Assert.False(vm.IsWindowActive);
+		}
+	}
+
+	class ViewModel
+	{
+		public bool IsWindowActive
+		{
+			get; set;
+		}
 	}
 }

src/Controls/tests/DeviceTests/Elements/Window/WindowTests.cs

@@ -232,5 +232,57 @@ await firstPage.Handler.MauiContext.Services.GetRequiredService<IDispatcher>()
 
 			Assert.True(passed);
 		}
+
+		[Fact]
+		public async Task WindowIsActivedRespondToMethodsCall()
+		{
+			SetupBuilder();
+			var page = new ContentPage();
+			var window = new Window(page);
+
+			await CreateHandlerAndAddToWindow<WindowHandlerStub>(window, (h) =>
+			{
+				var w = h.VirtualView;
+
+				Assert.True(window.IsActivated);
+
+				w.Deactivated();
+
+				Assert.False(window.IsActivated);
+			});
+		}
+
+		[Fact]
+		public async Task SwitchBetweenWindowShouldTriggerIsActivated()
+		{
+			SetupBuilder();
+			var page = new ContentPage();
+			var app = ApplicationServices.GetService<IApplication>() as ApplicationStub;
+
+			var window1 = new Window(page);
+			var window2 = new Window(page);
+
+			await CreateHandlerAndAddToWindow<WindowHandlerStub>(window1, (h) =>
+			{
+				app.OpenWindow(window1);	
+				Assert.True(window1.IsActivated);
+				Assert.False(window2.IsActivated);
+			});
+
+
+			await CreateHandlerAndAddToWindow<WindowHandlerStub>(window2, (h) =>
+			{
+				app.OpenWindow(window2);
+
+				Assert.False(window1.IsActivated);
+				Assert.True(window2.IsActivated);
+			});
+
+			app.CloseWindow(window2);
+			app.CloseWindow(window1);
+
+			Assert.False(window1.IsActivated);
+			Assert.False(window2.IsActivated);
+		}
 	}
 }