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AvaloniaUI / Avalonia.Controls.TreeDataGrid

A combined TreeView/DataGrid for Avalonia.
MIT License
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Keyboard navigation with Tab key crashes the app #202

Closed DmitryZhelnin closed 10 months ago

DmitryZhelnin commented 11 months ago

Some cells do not lose keyboard focus and when the navigation is cycled an app crashes when already selected cell got focus.

System.Reflection.TargetInvocationException: Exception has been thrown by the target of an invocation.
 ---> System.InvalidOperationException: The control already has a visual parent.
   at Avalonia.Visual.ValidateVisualChild(Visual c)
   at Avalonia.Collections.AvaloniaList`1.InsertRange(Int32 index, IEnumerable`1 items)
   at Avalonia.Controls.Panel.ChildrenChanged(Object sender, NotifyCollectionChangedEventArgs e)
   at Avalonia.Collections.AvaloniaList`1.NotifyAdd(T item, Int32 index)
   at Avalonia.Reactive.LightweightObservableBase`1.PublishNext(T value)
   at Avalonia.Interactivity.EventRoute.RaiseEventImpl(RoutedEventArgs e)
   at Avalonia.Interactivity.EventRoute.RaiseEvent(Interactive source, RoutedEventArgs e)
   at Avalonia.Interactivity.Interactive.RaiseEvent(RoutedEventArgs e)
   at Avalonia.Input.KeyboardDevice.SetFocusedElement(IInputElement element, NavigationMethod method, KeyModifiers keyModifiers)
   at Avalonia.Input.FocusManager.SetFocusedElement(IFocusScope scope, IInputElement element, NavigationMethod method, KeyModifiers keyModifiers)
   at Avalonia.Input.FocusManager.Focus(IInputElement control, NavigationMethod method, KeyModifiers keyModifiers)
   at Avalonia.Input.KeyboardNavigationHandler.Move(IInputElement element, NavigationDirection direction, KeyModifiers keyModifiers)
   at Avalonia.Input.KeyboardNavigationHandler.OnKeyDown(Object sender, KeyEventArgs e)
   --- End of inner exception stack trace ---
   at System.RuntimeMethodHandle.InvokeMethod(Object target, Span`1& arguments, Signature sig, Boolean constructor, Boolean wrapExceptions)
   at System.Reflection.RuntimeMethodInfo.Invoke(Object obj, BindingFlags invokeAttr, Binder binder, Object[] parameters, CultureInfo culture)
   at System.Delegate.DynamicInvokeImpl(Object[] args)
   at Avalonia.Interactivity.EventRoute.RaiseEventImpl(RoutedEventArgs e)
   at Avalonia.Interactivity.EventRoute.RaiseEvent(Interactive source, RoutedEventArgs e)
   at Avalonia.Interactivity.Interactive.RaiseEvent(RoutedEventArgs e)
   at Avalonia.Input.KeyboardDevice.ProcessRawEvent(RawInputEventArgs e)
   at Avalonia.Input.InputManager.ProcessInput(RawInputEventArgs e)
   at Avalonia.Controls.TopLevel.HandleInput(RawInputEventArgs e)
   at Avalonia.Win32.WindowImpl.AppWndProc(IntPtr hWnd, UInt32 msg, IntPtr wParam, IntPtr lParam)
   at Avalonia.Win32.WindowImpl.WndProc(IntPtr hWnd, UInt32 msg, IntPtr wParam, IntPtr lParam)
   at Avalonia.Win32.Interop.UnmanagedMethods.DispatchMessage(MSG& lpmsg)
   at Avalonia.Win32.Win32DispatcherImpl.RunLoop(CancellationToken cancellationToken)
   at Avalonia.Threading.DispatcherFrame.Run(IControlledDispatcherImpl impl)
   at Avalonia.Threading.Dispatcher.PushFrame(DispatcherFrame frame)
   at Avalonia.Threading.Dispatcher.MainLoop(CancellationToken cancellationToken)

https://github.com/AvaloniaUI/Avalonia.Controls.TreeDataGrid/assets/4993430/cd7ff1bc-a2c6-4bf7-a3ca-aa17d37513d3