Merge pull request #193 from SISTF/fix-issue-62

Implemented by Triggering the button's flyout by simulating a click.

Author: w-ahmad

src/TableView.Properties.cs

@@ -169,6 +169,20 @@ public partial class TableView
     /// </summary>
     public static readonly DependencyProperty CurrentCellSlotProperty = DependencyProperty.Register(nameof(CurrentCellSlot), typeof(TableViewCellSlot?), typeof(TableView), new PropertyMetadata(default, OnCurrentCellSlotChanged));
 
+    /// <summary>
+    /// Identifies the UseRightClickForColumnFilter dependency property.
+    /// </summary>
+    public static readonly DependencyProperty UseRightClickForColumnFilterProperty = DependencyProperty.Register(nameof(UseRightClickForColumnFilter), typeof(bool), typeof(TableView), new PropertyMetadata(false));
+
+    /// <summary>
+    /// Gets or sets a value indicating whether opening the column filter over header right-click is enabled.
+    /// </summary>
+    public bool UseRightClickForColumnFilter
+    {
+        get => (bool)GetValue(UseRightClickForColumnFilterProperty);
+        set => SetValue(UseRightClickForColumnFilterProperty, value);
+    }
+
     /// <summary>
     /// Gets the collection view associated with the TableView.
     /// </summary>

src/TableViewColumnHeader.cs

@@ -52,6 +52,7 @@ public TableViewColumnHeader()
         DefaultStyleKey = typeof(TableViewColumnHeader);
         ManipulationMode = ManipulationModes.TranslateX;
         RegisterPropertyChangedCallback(WidthProperty, OnWidthChanged);
+        RightTapped += OnRightTapped;
     }
 
     /// <summary>
@@ -65,6 +66,25 @@ private void OnWidthChanged(DependencyObject sender, DependencyProperty dp)
         }
     }
 
+    /// <summary>
+    /// Handles the RightTapped event.
+    /// </summary>
+    private void OnRightTapped(object sender, RightTappedRoutedEventArgs e)
+    {
+        // Check if right-click is enabled via TableView or column is currently resizing
+        if (_tableView?.UseRightClickForColumnFilter != true || IsSizingCursor)
+        {
+            return;
+        }
+
+        // Shows the button's flyout if options button is available and filtering is enabled
+        if (_optionsButton is not null && CanFilter)
+        {
+            _optionsButton.Flyout?.ShowAt(_optionsButton);            
+            e.Handled = true;
+        }
+    }
+
     /// <summary>
     /// Sorts the column in the specified direction.
     /// </summary>