public void ChangeItemsFilter(Action <IWhereCollector <T> > filterFunction, int filterApplyOrder)
{
RememberFilter(filterFunction, filterApplyOrder);
var collector = new PassToLinqWhereCollector <T>(_allItems);
_latestFilters.Where(x => x != null).ForEach(x => x(collector));
var newVisibleItems = collector.GetFilteredResult().ToArray();
//simulate that all visible-till-now items are removed...
var oldVisibleItems = _visibleItems.ToArray();
Logger.Debug(GetType(), "Removing all rows as filter changed will likely demand it. {0} items", oldVisibleItems.Length);
_visibleItems.Clear();
//... and simulate that visible set is added now
_visibleItems.AddRange(newVisibleItems);
RebuildIdx();
Logger.Debug(GetType(), "Filtering caused that {0} rows are visible now", newVisibleItems.Length);
Changed?.Invoke(0, newVisibleItems, oldVisibleItems);
}
public void ChangeItemsSorting(Action <IOrderByCollector <T> > collect)
{
var orderingCollector = new PassToLinqOrderByCollector <T>(_allItems);
collect(orderingCollector);
var newAllItems = orderingCollector.GetSortedResult().ToList();
T[] newVisibleItems;
if (!_latestFilters.Any() || _latestFilters.All(x => x == null))
{
newVisibleItems = newAllItems.ToArray();
}
else
{
var filteringCollector = new PassToLinqWhereCollector <T>(newAllItems);
_latestFilters.Where(x => x != null).ForEach(x => x(filteringCollector));
newVisibleItems = filteringCollector.GetFilteredResult().ToArray();
}
//simulate that all visible-till-now items are removed...
var oldVisibleItems = _visibleItems.ToArray();
Logger.Debug(GetType(), "Removing all rows as order change will likely demand it");
_visibleItems.Clear();
//... and simulate that visible set is added now
_allItems = newAllItems;
_visibleItems.AddRange(newVisibleItems);
RebuildIdx();
Logger.Debug(GetType(), "Filtering caused that {0} rows are visible now", newVisibleItems.Length);
Changed?.Invoke(0, newVisibleItems, oldVisibleItems);
}