private void Source_DatumReplacing(int srcIndex, IDatum datum)
{
using (Lock())
if (m_mapper.IsSelected(srcIndex))
{
int ndx = m_mapper.FromSourceIndex(srcIndex);
if (m_mapper.Filter(datum))
{
DatumReplacing?.Invoke(ndx, datum);
}
else
{
DatumDeleting?.Invoke(ndx);
}
}
}
void OnDatumReplacing(int xsDatum, IDatum datum)
{
if (m_mapper.Accepted(xsDatum))
{
var handler = DatumReplacing;
if (handler != null)
{
int xdItem = m_mapper.FromSourceIndex(xsDatum);
handler(xdItem, datum);
}
}
}
