public void RefreshTree()
{
if (m_TreeViewDataSource == null)
{
return;
}
if (m_Selection == null)
{
m_Selection = new int[0];
}
// get the names of the previous items
var selected = m_Selection.Select(x => m_TreeViewDataSource.FindItem(x)).Where(t => t != null).Select(c => c.displayName).ToArray();
// update the source
m_TreeViewDataSource.UpdateData();
// find the same items
var reselected = m_TreeViewDataSource.GetRows().Where(x => selected.Contains(x.displayName)).Select(x => x.id).ToArray();
if (!reselected.Any())
{
if (m_TreeViewDataSource.GetRows().Count > 0)
{
reselected = new[] { m_TreeViewDataSource.GetItem(0).id };
}
}
// update the selection
OnItemSelectionChanged(reselected);
}