public function GetGridColumnClass()
{
$result = parent::GetGridColumnClass() ? parent::GetGridColumnClass() : parent::GetGridColumnClass();
if ($this->GetGrid()->GetShowKeyColumnsImagesInHeader()) {
if ($this->dataset->IsFieldPrimaryKey($this->fieldName)) {
StringUtils::AddStr($result, 'primary-key', ' ');
}
if ($this->dataset->IsLookupField($this->fieldName)) {
if ($this->dataset->IsLookupFieldNameByDisplayFieldName($this->fieldName)) {
if ($this->dataset->IsFieldPrimaryKey($this->dataset->IsLookupFieldNameByDisplayFieldName($this->fieldName))) {
StringUtils::AddStr($result, 'primary-key', ' ');
}
}
StringUtils::AddStr($result, 'foreign-key', ' ');
}
}
if ($this->ShowOrderingControl()) {
StringUtils::AddStr($result, 'sortable', ' ');
}
StringUtils::AddStr($result, $this->GetSortOrderColumnClass(), ' ');
return $result;
}
