private void Filter(string oldFilter)
{
bool hadChildren = HasChildElements;
if (FilterText != null && (String.IsNullOrWhiteSpace(oldFilter) || FilterText.StartsWith(oldFilter, StringComparison.OrdinalIgnoreCase)))
{
var toRemove = new List <EditorViewModel> ();
foreach (var g in this.arranged)
{
foreach (var vm in g)
{
if (!MatchesFilter(vm))
{
toRemove.Add(vm);
}
else if (vm is IFilterable)
{
var filterable = (IFilterable)vm;
filterable.FilterText = FilterText;
if (!filterable.HasChildElements)
{
toRemove.Add(vm);
}
}
}
}
OnRemoveEditors(toRemove);
}
else
{
OnAddEditors(Properties);
}
if (hadChildren != HasChildElements)
{
OnPropertyChanged(nameof(HasChildElements));
}
}
