public TreeItem FindStrategyNearItem(TreeItem treeItem)
{
if (treeItem == null)
{
return(null);
}
if (treeItem is LogicalTreeItem && SearchStrategy == SearchStrategy.VisualTree)
{
return(VisualTreeItem.FindVisualTreeItem(treeItem.Instance));
}
if (treeItem is VisualTreeItem && SearchStrategy == SearchStrategy.LogicalTree)
{
var logicalItem = LogicalTreeItem.FindLogicalTreeItem(treeItem.Instance);
while (logicalItem == null)
{
treeItem = treeItem.Parent;
logicalItem = LogicalTreeItem.FindLogicalTreeItem(treeItem.Instance);
}
treeItem = logicalItem;
}
return(treeItem);
}
private void OnAdornerTimerTick(object sender, EventArgs e)
{
bool modifierPressed = Keyboard.IsKeyDown(Key.LeftCtrl) || Keyboard.IsKeyDown(Key.RightCtrl);
// Start hovering
if (modifierPressed && !_lastPressed)
{
_refreshTimer.Start();
}
// Stop hovering
if (_lastPressed && !modifierPressed)
{
ApplySelectedTreeItem();
_refreshTimer.Stop();
}
_lastPressed = modifierPressed;
if (!modifierPressed)
{
return;
}
ActivateWindowAtMousePosition();
var directlyOverElement = GetElementAtMousePos();
if (DireclyOverElement != directlyOverElement)
{
FrameworkElement element = directlyOverElement;
if (_selectedTreeItemService.SearchStrategy == SearchStrategy.LogicalTree)
{
element = FindLogicalElement(element);
}
else
{
// If SHIFT is pressed, automatically skip template parts and move up to the control itself
if (!Keyboard.IsKeyDown(Key.LeftShift) && !Keyboard.IsKeyDown(Key.RightShift))
{
while (element != null && element.TemplatedParent != null)
{
element = VisualTreeHelper.GetParent(element) as FrameworkElement;
}
}
_selectedTreeItem = VisualTreeItem.FindVisualTreeItem(element);
}
UpdateAdorner(element);
DireclyOverElement = element;
NotifyMouseElementChanged();
}
}
