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using Xamarin.Forms.CustomAttributes;
using Xamarin.Forms.Internals;
using System.Threading.Tasks;
#if UITEST
using Xamarin.UITest;
using NUnit.Framework;
#endif
// Apply the default category of "Issues" to all of the tests in this assembly
// We use this as a catch-all for tests which haven't been individually categorized
#if UITEST
[assembly: NUnit.Framework.Category("Issues")]
#endif
namespace Xamarin.Forms.Controls.Issues
{
[Preserve(AllMembers = true)]
[Issue(IssueTracker.Bugzilla, 44940, "[WinRT/UWP] ScrollView.ScrollToAsync does not return from await", PlatformAffected.WinRT)]
public class Bugzilla44940 : TestContentPage
{
Label _statusLabel;
Entry _firstEntry;
Entry _secondEntry;
StackLayout _verticalStackLayout;
ScrollView _scrollView;
protected override void Init()
{
_statusLabel = new Label
{
Text = "With focus on first Entry, hit Return key",
HorizontalOptions = LayoutOptions.CenterAndExpand,
LineBreakMode = LineBreakMode.WordWrap
};
_firstEntry = new Entry
{
HorizontalOptions = LayoutOptions.FillAndExpand,
VerticalOptions = LayoutOptions.CenterAndExpand,
};
_secondEntry = new Entry
{
HorizontalOptions = LayoutOptions.FillAndExpand,
VerticalOptions = LayoutOptions.CenterAndExpand,
};
_firstEntry.Completed += FirstEntryCompleted;
_verticalStackLayout = new StackLayout
{
HorizontalOptions = LayoutOptions.FillAndExpand,
VerticalOptions = LayoutOptions.FillAndExpand,
Padding = new Thickness(0, 0, 0, 0),
Margin = new Thickness(0, 0, 0, 0),
Spacing = 5,
Children =
{
_statusLabel,
_firstEntry,
_secondEntry
}
};
_scrollView = new ScrollView
{
Orientation = ScrollOrientation.Vertical,
HorizontalOptions = LayoutOptions.CenterAndExpand,
VerticalOptions = LayoutOptions.FillAndExpand,
Margin = new Thickness(10, 5, 10, 0),
Padding = new Thickness(0, 0, 0, 0),
Content = _verticalStackLayout
};
Content = _scrollView;
Device.BeginInvokeOnMainThread(async () =>
{
await Task.Delay(100);
_firstEntry.Focus();
});
}
async void FirstEntryCompleted(object sender, System.EventArgs e)
{
_firstEntry?.Unfocus();
_statusLabel.Text = "Attempting scroll. Return from await pending...";
await _scrollView.ScrollToAsync(_secondEntry, ScrollToPosition.MakeVisible, false);
_statusLabel.Text = "This should be visible on WinRT/UWP";
_secondEntry?.Focus();
}
}
}
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