Allow placement to be updated at run time

src/TheXamlGuy.NotificationFlyout.Uwp.UI.Controls/NotificationFlyout/NotificationFlyout.cs

@@ -30,7 +30,7 @@ namespace TheXamlGuy.NotificationFlyout.Uwp.UI.Controls
         public static readonly DependencyProperty PlacementProperty =
             DependencyProperty.Register(nameof(Placement),
                 typeof(NotificationFlyoutPlacement), typeof(NotificationFlyout),
-                new PropertyMetadata(NotificationFlyoutPlacement.Auto));
+                new PropertyMetadata(NotificationFlyoutPlacement.Auto, OnPlacementPropertyChanged));
 
         public static readonly DependencyProperty TemplateSettingsProperty =
             DependencyProperty.Register(nameof(TemplateSettings),
@@ -59,10 +59,13 @@ namespace TheXamlGuy.NotificationFlyout.Uwp.UI.Controls
 
         public event EventHandler<object> Opened;
 
-        internal event EventHandler IconSourceChanged;
+        internal event EventHandler IconSourcePropertyChanged;
 
         internal event EventHandler InteractedWith;
 
+        internal event EventHandler PlacementPropertyChanged;
+
+
         public ImageSource IconSource
         {
             get => (ImageSource)GetValue(IconSourceProperty);
@@ -121,6 +124,14 @@ namespace TheXamlGuy.NotificationFlyout.Uwp.UI.Controls
 
         internal static void SetApplication(INotificationFlyoutApplication application) => _applicationInstance = application;
 
+        internal void Close(bool shouldRespectIsLightDismissEnbabled)
+        {
+            if (!shouldRespectIsLightDismissEnbabled || IsLightDismissEnabled)
+            {
+                Close();
+            }
+        }
+
         internal void SetPlacement(double horizontalOffset, double verticalOffset, double workingAreaHeight, double workingAreaWidth, NotificationFlyoutTaskbarPlacement flyoutTaskbarPlacement)
         {
             if (_popup == null)
@@ -213,15 +224,6 @@ namespace TheXamlGuy.NotificationFlyout.Uwp.UI.Controls
                 ShowMode = FlyoutShowMode.Standard 
             });
         }
-
-        internal void Close(bool shouldRespectIsLightDismissEnbabled)
-        {
-            if (!shouldRespectIsLightDismissEnbabled || IsLightDismissEnabled)
-            {
-                Close();
-            }
-        }
-
         internal void UpdateTheme(bool isColorPrevalence) => VisualStateManager.GoToState(this, isColorPrevalence ? "ColorPrevalenceTheme" : "DefaultTheme", true);
 
         protected override void OnApplyTemplate()
@@ -259,9 +261,17 @@ namespace TheXamlGuy.NotificationFlyout.Uwp.UI.Controls
             sender?.OnIconPropertyChanged();
         }
 
+        private static void OnPlacementPropertyChanged(DependencyObject dependencyObject, DependencyPropertyChangedEventArgs args)
+        {
+            var sender = dependencyObject as NotificationFlyout;
+            sender?.OnPlacementPropertyChanged();
+        }
+
         private void OnGotFocus(object sender, RoutedEventArgs args) => InteractedWith?.Invoke(this, EventArgs.Empty);
 
-        private void OnIconPropertyChanged() => IconSourceChanged?.Invoke(this, EventArgs.Empty);
+        private void OnIconPropertyChanged() => IconSourcePropertyChanged?.Invoke(this, EventArgs.Empty);
+
+        private void OnPlacementPropertyChanged() => PlacementPropertyChanged?.Invoke(this, EventArgs.Empty);
 
         private void OnPointerPressed(object sender, PointerRoutedEventArgs args) => InteractedWith?.Invoke(this, EventArgs.Empty);
 

src/TheXamlGuy.NotificationFlyout.Wpf.UI.Controls/NotificationFlyout/NotificationFlyoutApplication.cs

@@ -49,8 +49,6 @@ namespace TheXamlGuy.NotificationFlyout.Wpf.UI.Controls
             set => SetValue(FlyoutProperty, value);
         }
 
-        public void Exit() => _notificationFlyoutXamlHost.Close();
-
         public void CloseFlyout(bool shouldRespectIsLightDismissEnbabled)
         {
             if (Flyout == null) return;
@@ -59,6 +57,7 @@ namespace TheXamlGuy.NotificationFlyout.Wpf.UI.Controls
 
         public void CloseFlyout() => CloseFlyout(false);
 
+        public void Exit() => _notificationFlyoutXamlHost.Close();
         public void OpenAsWindow<TUIElement>() where TUIElement : Windows.UI.Xaml.UIElement
         {
             var window = new XamlHost<TUIElement>();
@@ -80,6 +79,12 @@ namespace TheXamlGuy.NotificationFlyout.Wpf.UI.Controls
             sender?.OnFlyoutPropertyChanged();
         }
 
+        private void OnFlyoutIconSourcePropertyChanged(object sender, EventArgs args) => UpdateIcons();
+
+        private void OnFlyoutInteractedWith(object sender, EventArgs args) => _notificationFlyoutXamlHost.Activate();
+
+        private void OnFlyoutPlacementPropertyChanged(object sender, EventArgs args) => UpdateFlyoutPlacement();
+
         private void OnFlyoutPropertyChanged() => PrepareFlyout();
 
         private void OnIconInvoked(object sender, NotificationIconInvokedEventArgs args)
@@ -95,10 +100,6 @@ namespace TheXamlGuy.NotificationFlyout.Wpf.UI.Controls
             }
         }
 
-        private void OnFlyoutIconSourceChanged(object sender, EventArgs args) => UpdateIcons();
-
-        private void OnFlyoutInteractedWith(object sender, EventArgs args) => _notificationFlyoutXamlHost.Activate();
-
         private void OnNotificationFlyoutXamlHostClosed(object sender, EventArgs args) => _notificationIconHelper?.Dispose();
 
         private void OnNotificationFlyoutXamlHostDeactivated(object sender, EventArgs args) => CloseFlyout(true);
@@ -114,7 +115,8 @@ namespace TheXamlGuy.NotificationFlyout.Wpf.UI.Controls
         private void PrepareFlyout()
         {
             if (Flyout == null) return;
-            Flyout.IconSourceChanged += OnFlyoutIconSourceChanged;
+            Flyout.IconSourcePropertyChanged += OnFlyoutIconSourcePropertyChanged;
+            Flyout.PlacementPropertyChanged += OnFlyoutPlacementPropertyChanged;
             Flyout.InteractedWith += OnFlyoutInteractedWith;
 
             var content = _notificationFlyoutXamlHost.GetHostContent();
@@ -131,6 +133,7 @@ namespace TheXamlGuy.NotificationFlyout.Wpf.UI.Controls
             _notificationFlyoutXamlHost = new TransparentXamlHost<ContentControl>();
             _notificationFlyoutXamlHost.Closed += OnNotificationFlyoutXamlHostClosed;
             _notificationFlyoutXamlHost.Deactivated += OnNotificationFlyoutXamlHostDeactivated;
+
             var taskbarState = _taskbarHelper.GetCurrentState();
             _notificationFlyoutXamlHost.Left = taskbarState.Screen.WorkingArea.Left;
             _notificationFlyoutXamlHost.Top = taskbarState.Screen.WorkingArea.Top;