/**
* Create a WURFL_UserAgentHandlerChain from the given $context
* @param WURFL_Context $context
* @return WURFL_UserAgentHandlerChain
*/
public static function createFrom(WURFL_Context $context)
{
$cached_data = $context->cacheProvider->load('UserAgentHandlerChain');
if ($cached_data !== null) {
self::$_userAgentHandlerChain = $cached_data;
foreach (self::$_userAgentHandlerChain->getHandlers() as $handler) {
$handler->setupContext($context);
}
}
if (!self::$_userAgentHandlerChain instanceof WURFL_UserAgentHandlerChain) {
self::init($context);
$context->cacheProvider->save('UserAgentHandlerChain', self::$_userAgentHandlerChain, 3600);
}
return self::$_userAgentHandlerChain;
}
/**
* @return array Array of (string)User Agent Handler prefixes
* @see WURFL_Handlers_Handler::getPrefix()
*/
private function deviceClassificationNames()
{
$deviceClusterNames = array();
foreach ($this->userAgentHandlerChain->getHandlers() as $userAgentHandler) {
$deviceClusterNames[] = $userAgentHandler->getPrefix();
}
return $deviceClusterNames;
}