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<?php
namespace Bitrix\Main\Filter;
use Bitrix\Main;
class Factory
{
protected static $methods = null;
/**
* Prepare Entity Filter Factory Methods
* Function will rise event "OnBuildFilterFactoryMethods" if it required.
* @return array
*/
protected static function prepareMethods()
{
if(self::$methods === null)
{
self::$methods = [];
$event = new Main\Event('main', 'OnBuildFilterFactoryMethods', []);
$event->send();
foreach($event->getResults() as $eventResult)
{
if($eventResult->getType() != Main\EventResult::SUCCESS)
{
continue;
}
$resultParams = $eventResult->getParameters();
if(isset($resultParams['callbacks']) && is_array($resultParams['callbacks']))
{
foreach($resultParams['callbacks'] as $entityTypeName => $callback)
{
if(is_callable($callback))
{
self::$methods[$entityTypeName] = $callback;
}
}
}
}
}
return self::$methods;
}
/**
* Create Entity Filter by Entity Type Name.
* @param string $entityTypeName Entity Type Name
* @param array $settingsParams Filter Settings Params
* @param array $additionalParams Factory Method Additional Params.
* @return Filter
* @throws Main\NotSupportedException
*/
public static function createEntityFilter($entityTypeName, array $settingsParams, array $additionalParams = null)
{
$methods = self::prepareMethods();
if(isset($methods[$entityTypeName]))
{
$result = call_user_func_array($methods[$entityTypeName], [ $entityTypeName, $settingsParams, $additionalParams ]);
if($result instanceof Filter)
{
return $result;
}
}
throw new Main\NotSupportedException(
"Entity type: '{$entityTypeName}' is not supported in current context."
);
}
}