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 FrameworkElement FindLogicalElement(FrameworkElement element)
{
_selectedTreeItem = LogicalTreeItem.FindLogicalTreeItem(element);
while (_selectedTreeItem == null && element != null && element.TemplatedParent != null)
{
element = element.TemplatedParent as FrameworkElement;
_selectedTreeItem = LogicalTreeItem.FindLogicalTreeItem(element);
}
while (_selectedTreeItem == null && element != null)
{
element = VisualTreeHelper.GetParent(element) as FrameworkElement;
_selectedTreeItem = LogicalTreeItem.FindLogicalTreeItem(element);
}
return(element);
}