private SharpTreeViewTextSearch(SharpTreeView treeView)
{
if (treeView == null)
{
throw new ArgumentNullException(nameof(treeView));
}
this.treeView = treeView;
inputStack = new Stack <string>(8);
ClearState();
}
public static SharpTreeViewTextSearch GetInstance(SharpTreeView sharpTreeView)
{
var textSearch = (SharpTreeViewTextSearch)sharpTreeView.GetValue(TextSearchInstanceProperty);
if (textSearch == null)
{
textSearch = new SharpTreeViewTextSearch(sharpTreeView);
sharpTreeView.SetValue(TextSearchInstanceProperty, textSearch);
}
return(textSearch);
}
static void HandleExecuted_Delete(object sender, ExecutedRoutedEventArgs e)
{
SharpTreeView treeView = (SharpTreeView)sender;
treeView.updatesLocked = true;
int selectedIndex = -1;
try {
foreach (SharpTreeNode node in treeView.GetTopLevelSelection().ToArray())
{
if (selectedIndex == -1)
{
selectedIndex = treeView.flattener.IndexOf(node);
}
node.Delete();
}
} finally {
treeView.updatesLocked = false;
treeView.UpdateFocusedNode(null, Math.Max(0, selectedIndex - 1));
}
}
static void HandleCanExecute_Delete(object sender, CanExecuteRoutedEventArgs e)
{
SharpTreeView treeView = (SharpTreeView)sender;
e.CanExecute = treeView.GetTopLevelSelection().All(node => node.CanDelete());
}
public UpdateLock(SharpTreeView instance)
{
this.instance = instance;
this.instance.updatesLocked = true;
}