private void PreselectItem([NotNull] object sender, [NotNull] MouseButtonEventArgs e)
{
Debug.ArgumentNotNull(sender, nameof(sender));
Debug.ArgumentNotNull(e, nameof(e));
var treeViewItem = TreeViewItemExtensions.VisualUpwardSearch <TreeViewItem>(e.OriginalSource as DependencyObject) as TreeViewItem;
if (treeViewItem != null)
{
treeViewItem.IsSelected = true;
}
}
static void OnGotFocus(object sender, RoutedEventArgs e)
{
SelectedItemOnMouseUp = null;
if (!e.OriginalSource.Is <TreeView>())
{
var Item = (e.OriginalSource as DependencyObject).GetVisualParent <TreeViewItem>();
if (Item != null && Item.Is <TreeViewItem>())
{
if (Mouse.LeftButton == MouseButtonState.Pressed && TreeViewItemExtensions.GetIsSelected(Item) && Keyboard.Modifiers != ModifierKeys.Control)
{
SelectedItemOnMouseUp = Item;
}
else if (sender is TreeViewExt && TreeViewExtensions.GetSelectionMode(sender as TreeView) == TreeViewSelectionMode.Single)
{
TreeViewExtensions.SelectItem(sender as TreeView, Item);
}
else
{
(sender as TreeViewExt).SelectItems(Item);
}
}
}
}
