| 1 | <?php  | 
            ||
| 9 | class RowManager  | 
            ||
| 10 | { | 
            ||
| 11 | /**  | 
            ||
| 12 | * @var StyleMerger  | 
            ||
| 13 | */  | 
            ||
| 14 | protected $styleMerger;  | 
            ||
| 15 | |||
| 16 | /**  | 
            ||
| 17 | * RowManager constructor.  | 
            ||
| 18 | * @param StyleMerger $styleMerger  | 
            ||
| 19 | */  | 
            ||
| 20 | 81 | public function __construct(StyleMerger $styleMerger)  | 
            |
| 24 | |||
| 25 | /**  | 
            ||
| 26 | * @param Style $style  | 
            ||
| 27 | * @return $this  | 
            ||
| 28 | */  | 
            ||
| 29 | public function applyStyle(Row $row, Style $style)  | 
            ||
| 34 | |||
| 35 | /**  | 
            ||
| 36 | * Detect whether a row is considered empty.  | 
            ||
| 37 | * An empty row has either no cells at all - or only one empty cell  | 
            ||
| 38 | *  | 
            ||
| 39 | * @param Row $row  | 
            ||
| 40 | * @return bool  | 
            ||
| 41 | */  | 
            ||
| 42 | 71 | public function isEmpty(Row $row)  | 
            |
| 47 | }  | 
            
Unless you are absolutely sure that the expression can never be null because of other conditions, we strongly recommend to add an additional type check to your code: