/**
* @param TablePosition $a
* @param TablePosition $b
*
* @return int
*/
public static function compare($a, $b)
{
if ($a->getRow() == $b->getRow()) {
return $a->getCell() - $b->getCell();
}
return $a->getRow() - $b->getRow();
}
/**
* @param TablePosition $position
* @param int $offset
*
* @return TablePosition|null
*/
public function getPositionAfter(TablePosition $position, $offset = 1)
{
$cellsToMove = $offset;
$newRow = $position->getRow();
$newCell = $position->getCell();
while ($cellsToMove > 0 && $newRow < count($this->rows)) {
$cellCount = count($this->getRow($newRow)->getCells());
$cellsLeft = $cellCount - $newCell - 1;
if ($cellsToMove > $cellsLeft) {
++$newRow;
$cellsToMove -= $cellsLeft - 1;
$newCell = 0;
} else {
$newCell = $newCell + $cellsToMove;
$cellsToMove -= $cellsLeft;
}
}
if ($newRow >= 0 && $newCell >= 0) {
return new TablePosition($newRow, $newCell);
}
return;
}