public FilterElementEditorViewModel(FilterBase filter = null)
{
if (filter != null)
{
this._currentSelectedItem = filter.Identifier + ": " + filter.Description;
this._prevDescString = this._currentSelectedItem;
ConfiguredFilterBase = QueryCompiler.ToFilter(filter.ToQuery()).Filters.First() as FilterBase;
this.IsNegate = filter.Negate;
}
else
{
this.CurrentSelectedItem = GetFilterDescriptions().First();
}
this._filterDescriptions = GetFilterDescriptions().ToArray();
}
