feat: add button interaction.

src/Ursa/Controls/DateTimePicker/TimeRangePicker.cs

@@ -37,14 +37,9 @@ public class TimeRangePicker : TimePickerBase, IClearControl
         AvaloniaProperty.Register<TimeRangePicker, string?>(
             nameof(StartWatermark));
 
-    public static readonly StyledProperty<string?> EndWatermarkProperty = AvaloniaProperty.Register<TimeRangePicker, string?>(
+    public static readonly StyledProperty<string?> EndWatermarkProperty =
-        nameof(EndWatermark));
+        AvaloniaProperty.Register<TimeRangePicker, string?>(
-
+            nameof(EndWatermark));
-    public string? EndWatermark
-    {
-        get => GetValue(EndWatermarkProperty);
-        set => SetValue(EndWatermarkProperty, value);
-    }
 
     private Button? _button;
     private TimePickerPresenter? _endPresenter;
@@ -58,24 +53,15 @@ public class TimeRangePicker : TimePickerBase, IClearControl
     static TimeRangePicker()
     {
         StartTimeProperty.Changed.AddClassHandler<TimeRangePicker, TimeSpan?>((picker, args) =>
-            picker.OnSelectionChanged(args, true));
+            picker.OnSelectionChanged(args));
         EndTimeProperty.Changed.AddClassHandler<TimeRangePicker, TimeSpan?>((picker, args) =>
             picker.OnSelectionChanged(args, false));
     }
 
-    private void OnSelectionChanged(AvaloniaPropertyChangedEventArgs<TimeSpan?> args, bool start = true)
+    public string? EndWatermark
     {
-        var textBox = start ? _startTextBox : _endTextBox;
+        get => GetValue(EndWatermarkProperty);
-        if (textBox is null) return;
+        set => SetValue(EndWatermarkProperty, value);
-        var time = args.NewValue.Value;
-        if (time is null)
-        {
-            textBox.Text = null;
-            return;
-        }
-        var date = new DateTime(1, 1, 1, time.Value.Hours, time.Value.Minutes, time.Value.Seconds);
-        var text = date.ToString(DisplayFormat);
-        textBox.Text = text;
     }
 
     public string? StartWatermark
@@ -103,12 +89,29 @@ public class TimeRangePicker : TimePickerBase, IClearControl
         _endPresenter?.SetValue(TimePickerPresenter.TimeProperty, null);
     }
 
+    private void OnSelectionChanged(AvaloniaPropertyChangedEventArgs<TimeSpan?> args, bool start = true)
+    {
+        var textBox = start ? _startTextBox : _endTextBox;
+        if (textBox is null) return;
+        var time = args.NewValue.Value;
+        if (time is null)
+        {
+            textBox.Text = null;
+            return;
+        }
+
+        var date = new DateTime(1, 1, 1, time.Value.Hours, time.Value.Minutes, time.Value.Seconds);
+        var text = date.ToString(DisplayFormat);
+        textBox.Text = text;
+    }
+
     protected override void OnApplyTemplate(TemplateAppliedEventArgs e)
     {
         base.OnApplyTemplate(e);
 
         GotFocusEvent.RemoveHandler(OnTextBoxGetFocus, _startTextBox, _endTextBox);
         PointerPressedEvent.RemoveHandler(OnTextBoxPointerPressed, _startTextBox, _endTextBox);
+        Button.ClickEvent.RemoveHandler(OnButtonClick, _button);
 
         _popup = e.NameScope.Find<Popup>(PartNames.PART_Popup);
         _startTextBox = e.NameScope.Find<TextBox>(PART_StartTextBox);
@@ -118,7 +121,15 @@ public class TimeRangePicker : TimePickerBase, IClearControl
         _button = e.NameScope.Find<Button>(PART_Button);
 
         GotFocusEvent.AddHandler(OnTextBoxGetFocus, _startTextBox, _endTextBox);
-        PointerPressedEvent.AddHandler(OnTextBoxPointerPressed, RoutingStrategies.Tunnel, false, _startTextBox, _endTextBox);
+        PointerPressedEvent.AddHandler(OnTextBoxPointerPressed, RoutingStrategies.Tunnel, false, _startTextBox,
+            _endTextBox);
+        Button.ClickEvent.AddHandler(OnButtonClick, _button);
+    }
+
+    private void OnButtonClick(object sender, RoutedEventArgs e)
+    {
+        Focus(NavigationMethod.Pointer);
+        SetCurrentValue(IsDropdownOpenProperty, !IsDropdownOpen);
     }
 
     private void OnTextBoxPointerPressed(object sender, PointerPressedEventArgs e)
@@ -139,20 +150,20 @@ public class TimeRangePicker : TimePickerBase, IClearControl
             e.Handled = true;
             return;
         }
+
         if (e.Key == Key.Down)
         {
             SetCurrentValue(IsDropdownOpenProperty, true);
             e.Handled = true;
             return;
         }
+
         if (e.Key == Key.Tab)
         {
-            if (e.Source == _endTextBox)
+            if (e.Source == _endTextBox) SetCurrentValue(IsDropdownOpenProperty, false);
-            {
-                SetCurrentValue(IsDropdownOpenProperty, false);
-            }
             return;
         }
+
         base.OnKeyDown(e);
     }
 
@@ -163,4 +174,10 @@ public class TimeRangePicker : TimePickerBase, IClearControl
         SetCurrentValue(IsDropdownOpenProperty, false);
         Focus();
     }
+    
+    public void Dismiss()
+    {
+        SetCurrentValue(IsDropdownOpenProperty, false);
+        Focus();
+    }
 }