internal void RegisterOptionControl(ColumnFilterControl ctrl)
{
if (!Filters.Contains(ctrl))
{
ctrl.PropertyChanged += _filterHandler;
Filters.Add(ctrl);
}
}
void filter_PropertyChanged(object sender, PropertyChangedEventArgs e)
{
if (e.PropertyName == "FilterChanged")
{
ColumnFilterControl cf = sender as ColumnFilterControl;
Predicate <object> predicate = null;
foreach (var filter in Filters)
{
if (filter.HasPredicate)
{
if (predicate == null)
{
predicate = filter.GeneratePredicate();
}
else
{
predicate = predicate.And(filter.GeneratePredicate());
}
}
if (cf.FilterText == null)
{
if (predicate == null)
{
predicate = filter.GeneratePredicate();
}
else
{
predicate = predicate.And(filter.GeneratePredicate() == null ? predicate : filter.GeneratePredicate());
}
}
}
//bool canContinue = true;
//var args = new CancelableFilterChangedEventArgs(predicate);
//if (BeforeFilterChanged != null && !IsResetting)
//{
// BeforeFilterChanged(this, args);
// canContinue = !args.Cancel;
//}
//if (canContinue)
//{
ListCollectionView view = CollectionViewSource.GetDefaultView(this.ItemsSource) as ListCollectionView;
if (view != null && view.IsEditingItem)
{
view.CommitEdit();
}
if (view != null && view.IsAddingNew)
{
view.CommitNew();
}
if (CollectionView != null)
{
try
{
CollectionView.Filter = predicate;
}
catch
{
}
//int count = 1;
ObservableCollection <ISelected> list = new ObservableCollection <ISelected>();
foreach (var item in CollectionView)
{
ISelected selectedModel = item as ISelected;
//selectedModel.Num= count++;
list.Add(selectedModel);
}
//foreach (var item in list)
//{
// if (item == null)
// continue;
// item.Num = count++;
//}
if (list != null && list.Count > 0)
{
//FilterFinshItemsSource = list;
//if (AfterFilterChanged != null)
// AfterFilterChanged(this, new FilterChangedEventArgs(predicate));
}
}
//}
//else
//{
// IsResetting = true;
// var ctrl = sender as ColumnFilterControl;
// ctrl.ResetControl();
// IsResetting = false;
//}
}
}
