abstract class Pointer
{
public $ptr_current = false;
public $options = false;
protected $ptr_first = false;
protected $ptr_previous = false;
protected $ptr_next = false;
protected $ptr_last = false;
public function setCurrent($current)
{
if ($current) {
$this->ptr_current = $current;
};
}
public function setOptions($options)
{
if ($options) {
$this->options = $options;
};
}
abstract protected function getFirst();
abstract protected function getPrevious();
abstract protected function getNext();
abstract protected function getLast();
public function __construct($current = false, $options = false)
{
$this->setCurrent($current);
$this->setOptions($options);
$this->getFirst();
$this->getPrevious();
$this->getNext();
$this->getLast();
}
public function getPointers()
{
return array(
'first' => $this->ptr_first,
'previous' => $this->ptr_previous,
'next' => $this->ptr_next,
'last' => $this->ptr_last,
);
}
}
