private void AddSection(NotifyCollectionChangedEventArgs e)
{
// regard as coming only one item.
if (e.NewItems[0] is not Section section)
{
return;
}
int startIndex = RowIndexFromParentCollection(e.NewStartingIndex);
Insert(startIndex, new RowInfo(section, ViewType.CustomHeader));
// Insert(startIndex, new RowInfo(section, section.HeaderView == null ? ViewType.TextHeader : ViewType.CustomHeader));
for (var i = 0; i < section.Count; i++)
{
Cell cell = section[i];
if (!ViewTypes.ContainsKey(cell.GetType()))
{
ViewTypes.Add(cell.GetType(), GetNextTypeIndex());
}
var rowInfo = new RowInfo(section, cell, (ViewType)ViewTypes[cell.GetType()]);
Insert(i + 1 + startIndex, rowInfo);
}
Insert(startIndex + section.Count() + 1, new RowInfo(section, ViewType.CustomFooter));
// Insert(startIndex + section.Count() + 1, new RowInfo(section, section.FooterView == null ? ViewType.TextFooter : ViewType.CustomFooter));
_Adapter.NotifyItemRangeInserted(startIndex, section.Count + 2); // add a header and footer
}
private void AddCell(object sender, NotifyCollectionChangedEventArgs e)
{
if (!(sender is Section section))
{
throw new ArgumentException("Sender must be of type(Section)", nameof(sender));
}
int startIndex = RowIndexFromChildCollection(section, e.NewStartingIndex);
List <Cell> newCells = e.NewItems.Cast <Cell>().ToList();
for (var i = 0; i < newCells.Count; i++)
{
Cell cell = newCells[i];
if (!ViewTypes.ContainsKey(cell.GetType()))
{
ViewTypes.Add(cell.GetType(), GetNextTypeIndex());
}
var rowInfo = new RowInfo(section, cell, (ViewType)ViewTypes[cell.GetType()]);
Insert(i + startIndex, rowInfo);
}
_Adapter.NotifyItemRangeInserted(startIndex, newCells.Count);
}