Remove IsTextSearchEnabled implemenetation from ComboBox

src/Avalonia.Controls/ComboBox.cs

@@ -77,14 +77,6 @@ namespace Avalonia.Controls
         public static readonly StyledProperty<VerticalAlignment> VerticalContentAlignmentProperty =
             ContentControl.VerticalContentAlignmentProperty.AddOwner<ComboBox>();
 
-        /// <summary>
-        /// Defines the <see cref="IsTextSearchEnabled"/> property.
-        /// </summary>
-        public static readonly StyledProperty<bool> IsTextSearchEnabledProperty =
-            AvaloniaProperty.Register<ComboBox, bool>(nameof(IsTextSearchEnabled), true);
-
-        private string _textSearchTerm = string.Empty;
-        private DispatcherTimer _textSearchTimer;
         private bool _isDropDownOpen;
         private Popup _popup;
         private object _selectionBoxItem;
@@ -173,15 +165,6 @@ namespace Avalonia.Controls
             set { SetValue(VerticalContentAlignmentProperty, value); }
         }
 
-        /// <summary>
-        /// Gets or sets a value that specifies whether a user can jump to a value by typing.
-        /// </summary>
-        public bool IsTextSearchEnabled
-        {
-            get { return GetValue(IsTextSearchEnabledProperty); }
-            set { SetValue(IsTextSearchEnabledProperty, value); }
-        }
-
         /// <inheritdoc/>
         protected override IItemContainerGenerator CreateItemContainerGenerator()
         {
@@ -247,32 +230,6 @@ namespace Avalonia.Controls
             }
         }
 
-        /// <inheritdoc />
-        protected override void OnTextInput(TextInputEventArgs e)
-        {
-            if (!IsTextSearchEnabled || e.Handled)
-                return;
-
-            StopTextSearchTimer();
-
-            _textSearchTerm += e.Text;
-
-            bool match(ItemContainerInfo info) => 
-                info.ContainerControl is IContentControl control &&
-                control.Content?.ToString()?.StartsWith(_textSearchTerm, StringComparison.OrdinalIgnoreCase) == true;
-
-            var info = ItemContainerGenerator.Containers.FirstOrDefault(match);
-
-            if (info != null)
-            {
-                SelectedIndex = info.Index;
-            }
-
-            StartTextSearchTimer();
-
-            e.Handled = true;
-        }
-
         /// <inheritdoc/>
         protected override void OnPointerWheelChanged(PointerWheelEventArgs e)
         {
@@ -470,31 +427,5 @@ namespace Avalonia.Controls
 
             SelectedIndex = prev;
         }
-
-        private void StartTextSearchTimer()
-        {
-            _textSearchTimer = new DispatcherTimer { Interval = TimeSpan.FromSeconds(1) };
-            _textSearchTimer.Tick += TextSearchTimer_Tick;
-            _textSearchTimer.Start();
-        }
-
-        private void StopTextSearchTimer()
-        {
-            if (_textSearchTimer == null)
-            {
-                return;
-            }
-
-            _textSearchTimer.Stop();
-            _textSearchTimer.Tick -= TextSearchTimer_Tick;
-
-            _textSearchTimer = null;
-        }
-
-        private void TextSearchTimer_Tick(object sender, EventArgs e)
-        {
-            _textSearchTerm = string.Empty;
-            StopTextSearchTimer();
-        }
     }
 }