UserDefinedStruct.php
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<?php
namespace YahnisElsts\AdminMenuEditor\Customizable\Settings;
use YahnisElsts\AdminMenuEditor\Customizable\Builders;
use YahnisElsts\AdminMenuEditor\Customizable\Storage\StorageInterface;
class UserDefinedStruct extends AbstractStructSetting {
public function __construct($id, StorageInterface $store = null, $params = array()) {
parent::__construct($id, $store, $params);
if ( isset($params['childGenerator']) && is_callable($params['childGenerator']) ) {
$childFactory = new Builders\StructChildSettingFactory($this);
$children = call_user_func($params['childGenerator'], $childFactory);
if ( is_array($children) ) {
$expectedIdPrefix = $this->getId() . '.';
$idPrefixLength = strlen($expectedIdPrefix);
foreach ($children as $child) {
//This is a hack. There's no convenient way to pass the child key
//from the factory to this constructor. So the factory keeps a list
//of IDs and keys, and we use that or fall back to stripping our
//prefix from the ID.
$id = $child->getId();
$childKey = $childFactory->getChildKeyFromId($id);
if ( $childKey === null ) {
if ( substr($id, 0, $idPrefixLength) === $expectedIdPrefix ) {
$childKey = substr($id, $idPrefixLength);
} else {
throw new \InvalidArgumentException('Child setting ID must be prefixed with the parent ID');
}
}
$this->registerChild($childKey, $child);
}
}
}
}
//Make this public, allowing external code to add children.
public function createChild($childKey, $className, ...$constructorParams) {
return parent::createChild($childKey, $className, ...$constructorParams);
}
}