TraitContainer.php
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<?php
namespace Nextend\Framework\Form;
trait TraitContainer {
/**
* @var ContainedInterface
*/
protected $first, $last;
/**
* @var ContainedInterface[]
*/
protected $flattenElements = array();
/**
* @param ContainedInterface $element
*/
public function addElement($element) {
if (!$this->first) {
$this->first = $element;
}
if ($this->last) {
$this->last->setNext($element);
}
$this->last = $element;
$name = $element->getName();
if ($name) {
$this->flattenElements[$name] = $element;
}
}
/**
* @param ContainedInterface $element
* @param ContainedInterface $target
*/
public function insertElementBefore($element, $target) {
$previous = $target->getPrevious();
if ($previous) {
$previous->setNext($element);
} else {
$this->first = $element;
}
$element->setNext($target);
$name = $element->getName();
if ($name) {
$this->flattenElements[$name] = $element;
}
}
/**
* @param AbstractField $element
* @param AbstractField $target
*/
public function insertElementAfter($element, $target) {
$next = $target->getNext();
$target->setNext($element);
if ($next) {
$element->setNext($next);
} else {
$this->last = $element;
}
$name = $element->getName();
if ($name) {
$this->flattenElements[$name] = $element;
}
}
/**
* @param AbstractField $element
*/
public function removeElement($element) {
$previous = $element->getPrevious();
$next = $element->getNext();
if ($this->first === $element) {
$this->first = $next;
}
if ($this->last === $element) {
$this->last = $previous;
}
if ($previous) {
$previous->setNext($next);
} else {
$next->setPrevious();
}
}
/**
* @param $path
*
* @return AbstractField
*/
public function getElement($path) {
$parts = explode('/', $path, 2);
$element = $this->flattenElements[$parts[0]];
if (!empty($parts[1]) && $element instanceof ContainerInterface) {
$element = $element->getElement($parts[1]);
}
return $element;
}
public function getElementIdentifiers() {
return array_keys($this->flattenElements);
}
}