Merge pull request #220 from AlvinRey/TimeBox

[feat]: Time box support double click to select all

src/Ursa/Controls/TimeBox.cs

@@ -72,7 +72,7 @@ public class TimeBox : TemplatedControl
     private readonly int[] _sectionLength = new[] { 2, 2, 2, 3 };
     private readonly bool[] _isShowedCaret = new[] { false, false, false, false };
     private int? _currentActiveSectionIndex;
-    private bool _isAlreadyDrag;
+    private bool _isDragging;
     private Point _pressedPosition;
     private Point? _lastDragPoint;
 
@@ -213,7 +213,8 @@ public class TimeBox : TemplatedControl
         _milliSecondText.Text = Time != null ? Time.Value.Milliseconds.ToString() : "0";
         ParseTimeSpan(ShowLeadingZero);
         
-        PointerMovedEvent.AddHandler(OnDragPanelPointerMoved, _dragPanels[0], _dragPanels[1], _dragPanels[2], _dragPanels[3]);
+        PointerMovedEvent.AddHandler(OnDragPanelPointerMoved, _dragPanels[0], _dragPanels[1], _dragPanels[2],
+            _dragPanels[3]);
     }
 
     protected override void OnKeyDown(KeyEventArgs e)
@@ -224,7 +225,8 @@ public class TimeBox : TemplatedControl
         if (keymap is not null && Match(keymap.SelectAll))
         {
             _presenters[_currentActiveSectionIndex.Value].SelectionStart = 0;
-            _presenters[_currentActiveSectionIndex.Value].SelectionEnd = _presenters[_currentActiveSectionIndex.Value].Text?.Length ?? 0;
+            _presenters[_currentActiveSectionIndex.Value].SelectionEnd =
+                _presenters[_currentActiveSectionIndex.Value].Text?.Length ?? 0;
             return;
         }
 
@@ -311,13 +313,23 @@ public class TimeBox : TemplatedControl
         _lastDragPoint = _pressedPosition;
         for (int i = 0; i < 4; ++i)
         {
-            if (_borders[i].Bounds.Contains(_pressedPosition))
-            {
-                _currentActiveSectionIndex = i;
-            }
-            else
+            if (!_borders[i].Bounds.Contains(_pressedPosition))
             {
                 LeaveSection(i);
+                continue;
+            }
+            
+            _currentActiveSectionIndex = i;
+
+            if (e.ClickCount == 2)
+            {
+                EnterSection(_currentActiveSectionIndex.Value);
+                continue;
+            }
+
+            if (!_dragPanels[_currentActiveSectionIndex.Value].IsVisible)
+            {
+                MoveCaret(_currentActiveSectionIndex.Value);
             }
         }
     }
@@ -325,16 +337,16 @@ public class TimeBox : TemplatedControl
     protected override void OnPointerReleased(PointerReleasedEventArgs e)
     {
         if (_currentActiveSectionIndex is null) return;
-        if (_isAlreadyDrag)
+        if (_isDragging)
         {
-            _isAlreadyDrag = false;
+            _isDragging = false;
+            _lastDragPoint = null;
+            return;
         }
-        else
+        if(_dragPanels[_currentActiveSectionIndex.Value].IsVisible)
         {
             EnterSection(_currentActiveSectionIndex.Value);
         }
-
-        _lastDragPoint = null;
     }
 
     protected override void OnLostFocus(RoutedEventArgs e)
@@ -424,12 +436,12 @@ public class TimeBox : TemplatedControl
         if (d > 0)
         {
             Increase();
-            _isAlreadyDrag = true;
+            _isDragging = true;
         }
         else if (d < 0)
         {
             Decrease();
-            _isAlreadyDrag = true;
+            _isDragging = true;
         }
 
         _lastDragPoint = point;
@@ -458,26 +470,33 @@ public class TimeBox : TemplatedControl
         return 0;
     }
 
+    /// <summary>
+    /// Set dragPanel IsVisible to false if AllowDrag is true, and select all text in the section
+    /// </summary>
+    /// <param name="index">The index of section that will be enter</param>
     private void EnterSection(int index)
     {
         if (index < 0 || index > 3) return;
-        if (!_isShowedCaret[index])
-        {
+
         if (AllowDrag)
             _dragPanels[index].IsVisible = false;
         _presenters[index].ShowCaret();
         _isShowedCaret[index] = true;
         _presenters[index].SelectAll();
     }
-        else
+
+    private void MoveCaret(int index)
     {
         _presenters[index].ClearSelection();
         var caretPosition =
             _pressedPosition.WithX(_pressedPosition.X - _borders[index].Bounds.X);
         _presenters[index].MoveCaretToPoint(caretPosition);
     }
-    }
     
+    /// <summary>
+    /// Set dragPanel IsVisible to true if AllowDrag is true, and clear selection in the section
+    /// </summary>
+    /// <param name="index">The index of section that will be leave</param>
     private void LeaveSection(int index)
     {
         if (index < 0 || index > 3) return;