private void NavView_ItemInvoked(Microsoft.UI.Xaml.Controls.NavigationView sender, Microsoft.UI.Xaml.Controls.NavigationViewItemInvokedEventArgs args)
{
//// Temp Workaround for WinUI Bug https://github.com/microsoft/microsoft-ui-xaml/issues/2520
var invokedItem = args.InvokedItem;
if (invokedItem is FrameworkElement fe && fe.DataContext is SampleCategory cat2)
{
invokedItem = cat2;
}
//// End Workaround - args.InvokedItem
// UNO TODO
// force materialization
FindName("SamplePickerGrid");
if (invokedItem is SampleCategory category)
{
if (SamplePickerGrid.Visibility != Visibility.Collapsed && _selectedCategory == category)
{
// The NavView fires this event twice when the current selected item is clicked
// This makes sure the event get's processed correctly
var nop = Dispatcher.RunAsync(Windows.UI.Core.CoreDispatcherPriority.Normal, () => HideSamplePicker());
}
else
{
_selectedCategory = category;
ShowSamplePicker(category.Samples, true);
// Then Focus on Picker
dispatcherQueue.EnqueueAsync(() => SamplePickerGridView.Focus(FocusState.Keyboard));
}
}
}
private void SearchBox_KeyDown(object sender, Windows.UI.Xaml.Input.KeyRoutedEventArgs e)
{
if (e.Key == Windows.System.VirtualKey.Down && SamplePickerGrid.Visibility == Windows.UI.Xaml.Visibility.Visible)
{
// If we try and navigate down out of the textbox (and there's search results), go to the search results.
DispatcherHelper.ExecuteOnUIThreadAsync(() => SamplePickerGridView.Focus(FocusState.Keyboard));
}
}
private void SamplePickerGridView_Loaded(object sender, Windows.UI.Xaml.RoutedEventArgs e)
{
SamplePickerGrid.RegisterPropertyChangedCallback(UIElement.VisibilityProperty, (s, args) =>
{
if (s is UIElement samplePicker && samplePicker.Visibility == Visibility.Visible)
{
DispatcherHelper.ExecuteOnUIThreadAsync(() => SamplePickerGridView.Focus(FocusState.Keyboard));
}
});
private void NavView_ItemInvoked(Microsoft.UI.Xaml.Controls.NavigationView sender, Microsoft.UI.Xaml.Controls.NavigationViewItemInvokedEventArgs args)
{
if (args.InvokedItem is SampleCategory category)
{
if (SamplePickerGrid.Visibility != Visibility.Collapsed && _selectedCategory == category)
{
// The NavView fires this event twice when the current selected item is clicked
// This makes sure the event get's processed correctly
var nop = Dispatcher.RunAsync(Windows.UI.Core.CoreDispatcherPriority.Normal, () => HideSamplePicker());
}
else
{
_selectedCategory = category;
ShowSamplePicker(category.Samples, true);
// Then Focus on Picker
dispatcherQueue.EnqueueAsync(() => SamplePickerGridView.Focus(FocusState.Keyboard));
}
}
}
private async void UpdateSearchSuggestions(bool focus = false)
{
if (string.IsNullOrWhiteSpace(SearchBox.Text))
{
HideSamplePicker();
return;
}
var samples = (await Samples.FindSamplesByName(SearchBox.Text)).OrderBy(s => s.Name).ToArray();
if (samples.Count() > 0)
{
ShowSamplePicker(samples);
if (focus)
{
SamplePickerGridView.Focus(FocusState.Keyboard);
}
}
else
{
HideSamplePicker();
}
}
private void NavView_ItemInvoked(Microsoft.UI.Xaml.Controls.NavigationView sender, Microsoft.UI.Xaml.Controls.NavigationViewItemInvokedEventArgs args)
{
//// Temp Workaround for WinUI Bug https://github.com/microsoft/microsoft-ui-xaml/issues/2520
var invokedItem = args.InvokedItem;
if (invokedItem is FrameworkElement fe && fe.DataContext is SampleCategory cat2)
{
invokedItem = cat2;
}
//// End Workaround - args.InvokedItem
if (invokedItem is SampleCategory category)
{
if (SamplePickerGrid.Visibility != Visibility.Collapsed && _selectedCategory == category)
{
// The NavView fires this event twice when the current selected item is clicked
// This makes sure the event get's processed correctly
var nop = Dispatcher.RunAsync(Windows.UI.Core.CoreDispatcherPriority.Normal, () => HideSamplePicker());
}
else
{
_selectedCategory = category;
ShowSamplePicker(category.Samples, true);
// Then Focus on Picker
DispatcherHelper.ExecuteOnUIThreadAsync(() => SamplePickerGridView.Focus(FocusState.Keyboard));
}
}
else if (args.IsSettingsInvoked)
{
HideSamplePicker();
if (NavigationFrame.CurrentSourcePageType != typeof(About))
{
NavigateToSample(null);
}
}
}
