reload method
void
reload()
Implementation
void reload() {
pageSize = widget.gridState.widget.pageSize;
if (widget.gridState.widget.items != null) {
//load everything into the page cache
final items = _applyCriteria(widget.gridState);
pageCount = (items.length.toDouble() / pageSize.toDouble()).ceil();
for (int page = 1; page <= pageCount; page++) {
int start = (page - 1) * pageSize;
pageCache[page] =
items.sublist(start, math.min(start + pageSize, items.length));
}
}
}