@Override
public void onUpdate(SortedSet<Post> posts) {
synchronized (cells) {
boolean formCellAdded = false;
long beforeFormCellId = Long.MAX_VALUE;
if (!cells.get(cells.size() - 1).equals(formCell)) {
final int currentPos = cells.indexOf(formCell);
beforeFormCellId = cells.get(currentPos - 1).getItemId();
}
cells.clear();
Date prevDate = null;
Date lastSeparatorDate = null;
ListCell prevCell = null;
for (Post post : posts) {
Date currentDate = Post.virtualTimestampToDate(post.getVirtualTimestamp());
if (prevDate == null || !isSameDate(prevDate, currentDate)) {
lastSeparatorDate = currentDate;
prevCell = new DateSeparatorCell(currentDate);
cells.add(prevCell);
if (!formCellAdded && prevCell.getItemId() == beforeFormCellId) {
cells.add(formCell);
formCellAdded = true;
}
}
prevDate = currentDate;
prevCell = new PostCell(post);
cells.add(prevCell);
if (!formCellAdded && prevCell.getItemId() == beforeFormCellId) {
cells.add(formCell);
formCellAdded = true;
}
}
if (lastSeparatorDate == null || !isSameDate(lastSeparatorDate, new Date())) {
cells.add(new DateSeparatorCell(new Date()));
}
if (!formCellAdded) {
cells.add(formCell);
}
observable.notifyChanged();
}
}
