private void Selector_OnSelectionChanged(object sender, SelectionChangedEventArgs e)
{
if (_reselectingClasses)
{
return;
}
IEnumerable <DeckPickerClassItem> removedPickerClassItems;
var addedPickerClassItems = e.AddedItems.OfType <DeckPickerClassItem>();
var addedClasses = PickerClassItemsAsEnum(addedPickerClassItems);
if (addedClasses.Contains(HeroClassAll.All))
{
_reselectingClasses = true;
var senderList = ((ListView)sender);
senderList.UnselectAll();
foreach (var item in senderList.Items)
{
var dpci = item as DeckPickerClassItem;
if (dpci != null)
{
var hca = (HeroClassAll)dpci.DataContext;
switch (hca)
{
case HeroClassAll.All:
senderList.SelectedItems.Add(item);
SelectPickerClassItem(dpci);
break;
case HeroClassAll.Archived:
if (!SelectedClasses.Contains(HeroClassAll.Archived))
{
if (addedClasses.Contains(HeroClassAll.Archived))
{
senderList.SelectedItems.Add(item);
SelectPickerClassItem(dpci);
}
}
else
{
removedPickerClassItems = e.RemovedItems.OfType <DeckPickerClassItem>();
if (PickerClassItemsAsEnum(removedPickerClassItems).Contains(HeroClassAll.Archived))
{
DeselectPickerClassItem(dpci);
}
else
{
senderList.SelectedItems.Add(item);
}
}
break;
default:
DeselectPickerClassItem(dpci);
break;
}
}
}
_reselectingClasses = false;
}
else
{
DeckPickerClassItem removedAllClassItem = null;
removedPickerClassItems = e.RemovedItems.OfType <DeckPickerClassItem>();
foreach (var dpci in removedPickerClassItems)
{
var heroClass = dpci.DataContext as HeroClassAll?;
if (heroClass == null)
{
continue;
}
if (heroClass == HeroClassAll.All)
{
// We remove this from SelectedClasses now but we don't raise it's OnDeselected event yet,
// instead store a reference to it in case we want to quietly add this back to the
// SelectedClasses list later
SelectedClasses.Remove(heroClass.Value);
removedAllClassItem = dpci;
}
else
{
DeselectPickerClassItem(dpci);
}
}
var allIsSelected = SelectedClasses.Contains(HeroClassAll.All);
foreach (var dpci in addedPickerClassItems)
{
var heroClass = dpci.DataContext as HeroClassAll?;
if (heroClass == null)
{
continue;
}
if (allIsSelected && heroClass != HeroClassAll.Archived)
{
_reselectingClasses = true;
((ListView)sender).SelectedItems.Remove(dpci);
_reselectingClasses = false;
continue;
}
SelectPickerClassItem(dpci);
}
if (SelectedClasses.Count == 0 && !_clearingClasses)
{
var senderList = (ListView)sender;
if (removedAllClassItem == null)
{
var dpciAll = PickerClassItemFromEnum(senderList, HeroClassAll.All);
// Select 'All', raising its OnSelected event
_reselectingClasses = true;
senderList.SelectedItems.Add(dpciAll);
SelectPickerClassItem(dpciAll);
_reselectingClasses = false;
}
else
{
// If there are no selected classes, and we earlier removed 'All', quietly add it back
_reselectingClasses = true;
senderList.SelectedItems.Add(removedAllClassItem);
SelectedClasses.Add(HeroClassAll.All);
_reselectingClasses = false;
// And make sure we do not raise its OnDeselected event if we were going to
removedAllClassItem = null;
}
}
// If we removed the 'All' class earlier, raise the DeckPickerClassItem's OnDeselected event now
if (removedAllClassItem != null)
{
removedAllClassItem.OnDelselected();
}
}
if (Helper.MainWindow.IsLoaded)
{
UpdateDecks();
}
}