void FillCache()
{
ITableModel model = Controller.Model;
int sectionCount = model.GetSectionCount();
var newCellCache = new List <Cell>();
var newIsHeaderCache = new List <bool>();
var newNextIsHeaderCache = new List <bool>();
for (var sectionIndex = 0; sectionIndex < sectionCount; sectionIndex++)
{
var sectionTitle = model.GetSectionTitle(sectionIndex);
var sectionTextColor = model.GetSectionTextColor(sectionIndex);
var sectionRowCount = model.GetRowCount(sectionIndex);
if (!string.IsNullOrEmpty(sectionTitle))
{
Cell headerCell = model.GetHeaderCell(sectionIndex);
if (headerCell == null)
{
headerCell = new TextCell {
Text = sectionTitle, TextColor = sectionTextColor
}
}
;
headerCell.Parent = _view;
newIsHeaderCache.Add(true);
newNextIsHeaderCache.Add(sectionRowCount == 0 && sectionIndex < sectionCount - 1);
newCellCache.Add(headerCell);
}
for (int i = 0; i < sectionRowCount; i++)
{
newIsHeaderCache.Add(false);
newNextIsHeaderCache.Add(i == sectionRowCount - 1 && sectionIndex < sectionCount - 1);
newCellCache.Add((Cell)model.GetItem(sectionIndex, i));
}
}
_cellCache = newCellCache.ToArray();
_isHeaderCache = newIsHeaderCache.ToArray();
_nextIsHeaderCache = newNextIsHeaderCache.ToArray();
}
void InvalidateCellCache()
{
_cellCache = null;
_isHeaderCache = null;
_nextIsHeaderCache = null;
}
void OnModelChanged(object sender, EventArgs e)
{
InvalidateCellCache();
NotifyDataSetChanged();
}
Cell GetCellForPosition(int position, out bool isHeader, out bool nextIsHeader)
{
isHeader = false;
nextIsHeader = false;
ITableModel model = Controller.Model;
int sectionCount = model.GetSectionCount();
for (var sectionIndex = 0; sectionIndex < sectionCount; sectionIndex++)
{
int size = model.GetRowCount(sectionIndex) + 1;
if (position == 0)
{
isHeader = true;
nextIsHeader = size == 0 && sectionIndex < sectionCount - 1;
Cell header = model.GetHeaderCell(sectionIndex);
Cell resultCell = null;
if (header != null)
{
resultCell = header;
}
if (resultCell == null)
{
resultCell = new TextCell {
Text = model.GetSectionTitle(sectionIndex)
}
}
;
resultCell.Parent = _view;
return(resultCell);
}
if (position < size)
{
nextIsHeader = position == size - 1;
return((Cell)model.GetItem(sectionIndex, position - 1));
}
position -= size;
}
return(null);
}
}