protected override void OnPreviewMouseDown(MouseButtonEventArgs e)
{
if (Header)
{
var pt = e.GetPosition(this);
foreach (var viz in _visualChildren)
{
var v = viz as HeaderTextVisual;
if (v != null)
{
Rect rc = new Rect(v.X, v.Y, v.Size.Width, v.Size.Height);
if (rc.Contains(pt))
{
// Order: None -> Ascending -> Descending -> Ascending -> Descending -> ...
v.ToggleSortOrder();
if (Keyboard.IsKeyDown(Key.LeftShift) || Keyboard.IsKeyDown(Key.RightShift))
{
// Shift+Click adds column to the sorting set.
_sortOrder.Add(v);
}
else
{
// Clear all column sorts except the one that was clicked on.
ResetSortToPrimary(v);
_sortOrder.ResetTo(v);
}
SortOrderChanged?.Invoke(this, EventArgs.Empty);
break;
}
}
}
}
// Find out which visual is it
base.OnPreviewMouseDown(e);
}
public void ToggleSort(HeaderTextVisual v, bool add)
{
// Order: None -> Ascending -> Descending -> Ascending -> Descending -> ...
v.ToggleSortOrder();
if (add)
{
// Shift+Click adds column to the sorting set.
_sortOrder.Add(v);
}
else
{
// Clear all column sorts except the one that was clicked on.
ResetSortToPrimary(v);
_sortOrder.ResetTo(v);
}
SortOrderChanged?.Invoke(this, EventArgs.Empty);
}
protected virtual void OnSortOrderChanged()
{
SortOrderChanged.Invoke(this, EventArgs.Empty);
}
