public void UpdateIsDropAllowed()
{
if (ViewModel.Instance.DragSource == null && ViewModel.Instance.SelectedSlot == null)
{
IsDropAllowed = true;
}
else if (ViewModel.Instance.DragSource != null)
{
Slot sourceSlot = ViewModel.Instance.DragSource;
Item sourceItem = ViewModel.Instance.DraggedItem;
IsDropAllowed = IsItemAllowed(sourceItem) && sourceSlot.IsItemAllowed(Item);
}
else // ViewModel.Instance.SelectedSlot != null
{
Slot sourceSlot = ViewModel.Instance.SelectedSlot;
IsDropAllowed = sourceSlot == this || (AllowedCategory == ItemCategory.All &&
(Item == null || Item.Category == sourceSlot.AllowedCategory));
}
}
public void UpdateIsDropAllowed(Slot selected, Slot source, Item draggedItem)
{
if (source == null && selected == null)
{
IsDropAllowed = true;
}
else if (source != null)
{
Slot sourceSlot = source;
Item sourceItem = draggedItem;
IsDropAllowed = AllowedCategory == sourceSlot.AllowedCategory ||
(IsItemAllowed(sourceItem) && sourceSlot.IsItemAllowed(Item));
}
else // selected != null
{
Slot sourceSlot = selected;
IsDropAllowed = sourceSlot == this || (AllowedCategory == ItemCategory.All &&
Item != null && sourceSlot.AllowedCategory == Item.Category);
}
OnPropertyChanged("IsDropAllowed");
}
