private SelectionList <T> GetSelectionListForScope(string scope)
{
lock (_lockObject)
{
if (scope is null)
{
if (_noScopeSelections is null)
{
_noScopeSelections = CreateSelectionList(null);
}
return(_noScopeSelections);
}
else
{
if (!_selectionsByScope.TryGetValue(scope, out var selections))
{
selections = CreateSelectionList(scope);
_selectionsByScope[scope] = selections;
}
return(selections);
}
}
}
private SelectionList <T> CreateSelectionList(string scope)
{
var selectionList = new SelectionList <T>(scope)
{
AllowMultiSelect = AllowMultiSelect
};
selectionList.SelectionChanged += OnSelectionListSelectionChanged;
return(selectionList);
}