public function registerObserver(Observer $observer)
{
$iterator = $this->ducks->iterator();
while ($iterator->hasNext()) {
$duck = $iterator->next();
$duck->registerObserver($observer);
}
}
public function quack()
{
$iterator = $this->quackers->iterator();
while ($iterator->hasNext()) {
$quacker = $iterator->next();
$quacker->quack();
}
}
public function myPrint()
{
print "\n" . $this->getName();
println(", " . $this->getDescription());
println("---------------------");
$iterator = $this->menuComponents->iterator();
while ($iterator->hasNext()) {
$menuComponent = $iterator->next();
$menuComponent->myPrint();
}
}
public function printMenu(MyIterator $iterator = NULL)
{
if ($iterator == NULL) {
$menuIterator = $this->menus->iterator();
while ($menuIterator->hasNext()) {
$menu = $menuIterator->next();
printMenu($menu->createIterator());
}
} else {
while ($iterator->hasNext()) {
$menuItem = $iterator->next();
print $menuItem->getName() . ", ";
print $menuItem->getPrice() . " -- ";
println($menuItem->getDescription());
}
}
}
public function getObservers()
{
return $this->observers->iterator();
}
public function createIterator()
{
return $this->menuItems->iterator();
}
