internal void SelectSlots(int startSlot, int endSlot, bool select)
{
int itemSlot = OwningGrid.RowGroupHeadersTable.GetNextGap(startSlot - 1);
int endItemSlot = OwningGrid.RowGroupHeadersTable.GetPreviousGap(endSlot + 1);
if (select)
{
while (itemSlot <= endItemSlot)
{
// Add the newly selected item slots by skipping over the RowGroupHeaderSlots
int nextRowGroupHeaderSlot = OwningGrid.RowGroupHeadersTable.GetNextIndex(itemSlot);
int lastItemSlot = nextRowGroupHeaderSlot == -1 ? endItemSlot : Math.Min(endItemSlot, nextRowGroupHeaderSlot - 1);
for (int slot = itemSlot; slot <= lastItemSlot; slot++)
{
if (!_selectedSlotsTable.Contains(slot))
{
_selectedItemsCache.Add(OwningGrid.DataConnection.GetDataItem(OwningGrid.RowIndexFromSlot(slot)));
}
}
_selectedSlotsTable.AddValues(itemSlot, lastItemSlot - itemSlot + 1, true);
itemSlot = OwningGrid.RowGroupHeadersTable.GetNextGap(lastItemSlot);
}
}
else
{
while (itemSlot <= endItemSlot)
{
// Remove the unselected item slots by skipping over the RowGroupHeaderSlots
int nextRowGroupHeaderSlot = OwningGrid.RowGroupHeadersTable.GetNextIndex(itemSlot);
int lastItemSlot = nextRowGroupHeaderSlot == -1 ? endItemSlot : Math.Min(endItemSlot, nextRowGroupHeaderSlot - 1);
for (int slot = itemSlot; slot <= lastItemSlot; slot++)
{
if (_selectedSlotsTable.Contains(slot))
{
_selectedItemsCache.Remove(OwningGrid.DataConnection.GetDataItem(OwningGrid.RowIndexFromSlot(slot)));
}
}
_selectedSlotsTable.RemoveValues(itemSlot, lastItemSlot - itemSlot + 1);
itemSlot = OwningGrid.RowGroupHeadersTable.GetNextGap(lastItemSlot);
}
}
}
