public function getApplicationTransactionTitle(PhabricatorApplicationTransaction $xaction)
{
$author_phid = $xaction->getAuthorPHID();
$old = $this->decodeValue($xaction->getOldValue());
$new = $this->decodeValue($xaction->getNewValue());
$add = array_diff($new, $old);
$rem = array_diff($old, $new);
if ($add && !$rem) {
return pht('%s updated %s, added %d: %s.', $xaction->renderHandleLink($author_phid), $this->getFieldName(), new PhutilNumber(count($add)), $xaction->renderHandleList($add));
} else {
if ($rem && !$add) {
return pht('%s updated %s, removed %d: %s.', $xaction->renderHandleLink($author_phid), $this->getFieldName(), new PhutilNumber(count($rem)), $xaction->renderHandleList($rem));
} else {
return pht('%s updated %s, added %d: %s; removed %d: %s.', $xaction->renderHandleLink($author_phid), $this->getFieldName(), new PhutilNumber(count($add)), $xaction->renderHandleList($add), new PhutilNumber(count($rem)), $xaction->renderHandleList($rem));
}
}
}
