/**
* @param StrategyInterface $strategy
*/
public function add(StrategyInterface $strategy)
{
if ($strategy === $this) {
throw new InvalidArgumentException("Cannot add strategy to itself.");
}
$this->elements[$strategy->getName()] = $strategy;
}
/**
* @param StrategyInterface $strategy
* @param null|int $priority
*
* @return DelegateStrategy
*/
public function add(StrategyInterface $strategy, $priority = null)
{
if ($strategy === $this) {
throw new InvalidArgumentException("Cannot add strategy to itself.");
}
if (is_null($priority)) {
$priority = static::DEFAULT_PRIORITY;
}
$this->ordered = false;
$this->elements[$strategy->getName()] = [static::STRATEGY_KEY => $strategy, static::PRIORITY_KEY => $priority];
return $this;
}