CmdPal: Replace Tapped events with generic ones (#40640)

## Summary of the Pull Request
Click event on WinUI buttons handle more than just click and is more
versatile that Tapped event. When you tap a Button with a finger or
stylus, or press a left mouse button while the pointer is over it, the
button raises the Click event. If a button has keyboard focus, pressing
the Enter key or the Spacebar key also raises the Click event.

This PR also replaces the right-tapped event on items on the list page
with context menu handling, allowing other input gestures (such as
Shift+F10) to also display the context menu.

And finally, it adds a button to the status messages badge so that the
flyout can be opened using the keyboard.

<!-- Please review the items on the PR checklist before submitting-->
## PR Checklist

- [x] **Closes:** #40616 
- [ ] **Communication:** I've discussed this with core contributors
already. If the work hasn't been agreed, this work might be rejected
- [ ] **Tests:** Added/updated and all pass
- [ ] **Localization:** All end-user-facing strings can be localized
- [ ] **Dev docs:** Added/updated
- [ ] **New binaries:** Added on the required places
- [ ] [JSON for
signing](https://github.com/microsoft/PowerToys/blob/main/.pipelines/ESRPSigning_core.json)
for new binaries
- [ ] [WXS for
installer](https://github.com/microsoft/PowerToys/blob/main/installer/PowerToysSetup/Product.wxs)
for new binaries and localization folder
- [ ] [YML for CI
pipeline](https://github.com/microsoft/PowerToys/blob/main/.pipelines/ci/templates/build-powertoys-steps.yml)
for new test projects
- [ ] [YML for signed
pipeline](https://github.com/microsoft/PowerToys/blob/main/.pipelines/release.yml)
- [ ] **Documentation updated:** If checked, please file a pull request
on [our docs
repo](https://github.com/MicrosoftDocs/windows-uwp/tree/docs/hub/powertoys)
and link it here: #xxx

<!-- Provide a more detailed description of the PR, other things fixed,
or any additional comments/features here -->
## Detailed Description of the Pull Request / Additional comments

<!-- Describe how you validated the behavior. Add automated tests
wherever possible, but list manual validation steps taken as well -->
## Validation Steps Performed

Tested on desktop with keyboard and mouse (no cats), and SB2 with touch
and pen. Input gestures seem to work as intended.

---------

Co-authored-by: Mike Griese <migrie@microsoft.com>

src/modules/cmdpal/Microsoft.CmdPal.UI/Controls/CommandBar.xaml

@@ -76,11 +76,16 @@
 
         <Grid
             x:Name="IconRoot"
-            Margin="8,0,0,0"
-            Tapped="PageIcon_Tapped"
+            Margin="3,0,-5,0"
             Visibility="{x:Bind CurrentPageViewModel.IsNested, Mode=OneWay}">
-            <InfoBadge Visibility="{x:Bind CurrentPageViewModel.HasStatusMessage, Mode=OneWay}" Value="{x:Bind CurrentPageViewModel.StatusMessages.Count, Mode=OneWay}" />
-            <Grid.ContextFlyout>
+            <Button
+                x:Name="StatusMessagesButton"
+                x:Uid="StatusMessagesButton"
+                Padding="4"
+                Style="{StaticResource SubtleButtonStyle}"
+                Visibility="{x:Bind CurrentPageViewModel.HasStatusMessage, Mode=OneWay}">
+                <InfoBadge Value="{x:Bind CurrentPageViewModel.StatusMessages.Count, Mode=OneWay}" />
+                <Button.Flyout>
                     <Flyout x:Name="StatusMessagesFlyout" Placement="TopEdgeAlignedLeft">
                         <ItemsRepeater
                             x:Name="MessagesDropdown"
@@ -89,13 +94,7 @@
                             Layout="{StaticResource VerticalStackLayout}">
                             <ItemsRepeater.ItemTemplate>
                                 <DataTemplate x:DataType="coreViewModels:StatusMessageViewModel">
-                                <StackPanel
-                                    Grid.Row="0"
-                                    Margin="0"
-                                    HorizontalAlignment="Stretch"
-                                    VerticalAlignment="Bottom"
-                                    Background="{ThemeResource ApplicationPageBackgroundThemeBrush}"
-                                    CornerRadius="0">
+                                    <StackPanel HorizontalAlignment="Stretch" VerticalAlignment="Bottom">
                                         <InfoBar
                                             CornerRadius="{ThemeResource ControlCornerRadius}"
                                             IsClosable="False"
@@ -107,13 +106,14 @@
                             </ItemsRepeater.ItemTemplate>
                         </ItemsRepeater>
                     </Flyout>
-            </Grid.ContextFlyout>
+                </Button.Flyout>
+            </Button>
         </Grid>
         <Button
             x:Name="SettingsIconButton"
             x:Uid="SettingsButton"
+            Click="SettingsIcon_Clicked"
             Style="{StaticResource SubtleButtonStyle}"
-            Tapped="SettingsIcon_Tapped"
             Visibility="{x:Bind CurrentPageViewModel.IsNested, Mode=OneWay, Converter={StaticResource BoolToInvertedVisibilityConverter}}">
             <StackPanel Orientation="Horizontal" Spacing="8">
                 <FontIcon
@@ -146,8 +146,8 @@
                 x:Load="{x:Bind IsLoaded, Mode=OneWay}"
                 AutomationProperties.Name="{x:Bind ViewModel.PrimaryCommand.Name, Mode=OneWay}"
                 Background="Transparent"
+                Click="PrimaryButton_Clicked"
                 Style="{StaticResource SubtleButtonStyle}"
-                Tapped="PrimaryButton_Tapped"
                 Visibility="{x:Bind ViewModel.HasPrimaryCommand, Mode=OneWay}">
                 <StackPanel Orientation="Horizontal" Spacing="8">
                     <TextBlock
@@ -169,8 +169,8 @@
                 Padding="6,4,4,4"
                 x:Load="{x:Bind IsLoaded, Mode=OneWay}"
                 AutomationProperties.Name="{x:Bind ViewModel.SecondaryCommand.Name, Mode=OneWay}"
+                Click="SecondaryButton_Clicked"
                 Style="{StaticResource SubtleButtonStyle}"
-                Tapped="SecondaryButton_Tapped"
                 Visibility="{x:Bind ViewModel.HasSecondaryCommand, Mode=OneWay}">
                 <StackPanel Orientation="Horizontal" Spacing="8">
                     <TextBlock
@@ -200,8 +200,8 @@
                 x:Name="MoreCommandsButton"
                 x:Uid="MoreCommandsButton"
                 Padding="4"
+                Click="MoreCommandsButton_Clicked"
                 Style="{StaticResource SubtleButtonStyle}"
-                Tapped="MoreCommandsButton_Tapped"
                 ToolTipService.ToolTip="Ctrl+K"
                 Visibility="{x:Bind ViewModel.ShouldShowContextMenu, Mode=OneWay}">
                 <StackPanel Orientation="Horizontal" Spacing="8">

src/modules/cmdpal/Microsoft.CmdPal.UI/Controls/CommandBar.xaml.cs

@@ -114,34 +114,23 @@ public sealed partial class CommandBar : UserControl,
     }
 
     [System.Diagnostics.CodeAnalysis.SuppressMessage("CodeQuality", "IDE0051:Remove unused private members", Justification = "VS has a tendency to delete XAML bound methods over-aggressively")]
-    private void PrimaryButton_Tapped(object sender, TappedRoutedEventArgs e)
+    private void PrimaryButton_Clicked(object sender, RoutedEventArgs e)
     {
         ViewModel.InvokePrimaryCommand();
     }
 
     [System.Diagnostics.CodeAnalysis.SuppressMessage("CodeQuality", "IDE0051:Remove unused private members", Justification = "VS has a tendency to delete XAML bound methods over-aggressively")]
-    private void SecondaryButton_Tapped(object sender, TappedRoutedEventArgs e)
+    private void SecondaryButton_Clicked(object sender, RoutedEventArgs e)
     {
         ViewModel.InvokeSecondaryCommand();
     }
 
-    private void PageIcon_Tapped(object sender, TappedRoutedEventArgs e)
-    {
-        if (CurrentPageViewModel?.StatusMessages.Count > 0)
-        {
-            StatusMessagesFlyout.ShowAt(
-                placementTarget: IconRoot,
-                showOptions: new FlyoutShowOptions() { ShowMode = FlyoutShowMode.Standard });
-        }
-    }
-
-    private void SettingsIcon_Tapped(object sender, TappedRoutedEventArgs e)
+    private void SettingsIcon_Clicked(object sender, RoutedEventArgs e)
     {
         WeakReferenceMessenger.Default.Send<OpenSettingsMessage>();
-        e.Handled = true;
     }
 
-    private void MoreCommandsButton_Tapped(object sender, TappedRoutedEventArgs e)
+    private void MoreCommandsButton_Clicked(object sender, RoutedEventArgs e)
     {
         WeakReferenceMessenger.Default.Send<OpenContextMenuMessage>(new OpenContextMenuMessage(null, null, null, ContextMenuFilterLocation.Bottom));
     }

src/modules/cmdpal/Microsoft.CmdPal.UI/ExtViews/ListPage.xaml

@@ -113,13 +113,14 @@
                 <ListView
                     x:Name="ItemsList"
                     Padding="0,2,0,0"
+                    ContextCanceled="ItemsList_OnContextCanceled"
+                    ContextRequested="ItemsList_OnContextRequested"
                     DoubleTapped="ItemsList_DoubleTapped"
                     IsDoubleTapEnabled="True"
                     IsItemClickEnabled="True"
                     ItemClick="ItemsList_ItemClick"
                     ItemTemplate="{StaticResource ListItemViewModelTemplate}"
                     ItemsSource="{x:Bind ViewModel.FilteredItems, Mode=OneWay}"
-                    RightTapped="ItemsList_RightTapped"
                     SelectionChanged="ItemsList_SelectionChanged">
                     <ListView.ItemContainerTransitions>
                         <TransitionCollection />

src/modules/cmdpal/Microsoft.CmdPal.UI/ExtViews/ListPage.xaml.cs

@@ -316,11 +316,24 @@ public sealed partial class ListPage : Page,
         return null;
     }
 
-    private void ItemsList_RightTapped(object sender, RightTappedRoutedEventArgs e)
+    private void ItemsList_OnContextRequested(UIElement sender, ContextRequestedEventArgs e)
     {
-        if (e.OriginalSource is FrameworkElement element &&
-            element.DataContext is ListItemViewModel item)
+        var (item, element) = e.OriginalSource switch
         {
+            // caused by keyboard shortcut (e.g. Context menu key or Shift+F10)
+            ListViewItem listViewItem => (ItemsList.ItemFromContainer(listViewItem) as ListItemViewModel, listViewItem),
+
+            // caused by right-click on the ListViewItem
+            FrameworkElement { DataContext: ListItemViewModel itemViewModel } frameworkElement => (itemViewModel, frameworkElement),
+
+            _ => (null, null),
+        };
+
+        if (item == null || element == null)
+        {
+            return;
+        }
+
         if (ItemsList.SelectedItem != item)
         {
             ItemsList.SelectedItem = item;
@@ -328,7 +341,10 @@ public sealed partial class ListPage : Page,
 
         ViewModel?.UpdateSelectedItemCommand.Execute(item);
 
-            var pos = e.GetPosition(element);
+        if (!e.TryGetPosition(element, out var pos))
+        {
+            pos = new(0, element.ActualHeight);
+        }
 
         _ = DispatcherQueue.TryEnqueue(
             () =>
@@ -340,6 +356,11 @@ public sealed partial class ListPage : Page,
                         pos,
                         ContextMenuFilterLocation.Top));
             });
-        }
+        e.Handled = true;
+    }
+
+    private void ItemsList_OnContextCanceled(UIElement sender, RoutedEventArgs e)
+    {
+        _ = DispatcherQueue.TryEnqueue(() => WeakReferenceMessenger.Default.Send<CloseContextMenuMessage>());
     }
 }

src/modules/cmdpal/Microsoft.CmdPal.UI/Pages/ShellPage.xaml

@@ -225,11 +225,11 @@
                         HorizontalAlignment="Center"
                         VerticalAlignment="Center"
                         ui:VisualExtensions.NormalizedCenterPoint="0.5,0.5"
+                        Click="BackButton_Clicked"
                         Content="{ui:FontIcon Glyph=,
                                               FontSize=14}"
                         FontSize="16"
                         Style="{StaticResource SubtleButtonStyle}"
-                        Tapped="BackButton_Tapped"
                         Visibility="{x:Bind ViewModel.CurrentPage.IsNested, Mode=OneWay}">
                         <animations:Implicit.ShowAnimations>
                             <animations:OpacityAnimation

src/modules/cmdpal/Microsoft.CmdPal.UI/Pages/ShellPage.xaml.cs

@@ -413,7 +413,7 @@ public sealed partial class ShellPage : Microsoft.UI.Xaml.Controls.Page,
         }
     }
 
-    private void BackButton_Tapped(object sender, Microsoft.UI.Xaml.Input.TappedRoutedEventArgs e) => WeakReferenceMessenger.Default.Send<NavigateBackMessage>(new());
+    private void BackButton_Clicked(object sender, Microsoft.UI.Xaml.RoutedEventArgs e) => WeakReferenceMessenger.Default.Send<NavigateBackMessage>(new());
 
     private void RootFrame_Navigated(object sender, Microsoft.UI.Xaml.Navigation.NavigationEventArgs e)
     {

src/modules/cmdpal/Microsoft.CmdPal.UI/Strings/en-us/Resources.resw

@@ -428,4 +428,10 @@ Right-click to remove the key combination, thereby deactivating the shortcut.</v
   <data name="Settings_ExtensionPage_Alias_ToggleSwitch.OffContent" xml:space="preserve">
     <value>Indirect</value>
   </data>
+  <data name="StatusMessagesButton.[using:Microsoft.UI.Xaml.Automation]AutomationProperties.Name" xml:space="preserve">
+    <value>Show status messages</value>
+  </data>
+  <data name="StatusMessagesButton.[using:Microsoft.UI.Xaml.Controls]ToolTipService.ToolTip" xml:space="preserve">
+    <value>Show status messages</value>
+  </data>
 </root>