while(_firstLineRow < numRows) {
firstLineIdx = model()->index(_firstLineRow, 0);
if((Message::Type)(model()->data(firstLineIdx, MessageModel::TypeRole).toInt()) != Message::DayChange)
while(_firstLineRow < numRows) {
firstLineIdx = model()->index(_firstLineRow, 0);
if((Message::Type)(model()->data(firstLineIdx, MessageModel::TypeRole).toInt()) != Message::DayChange)