/**
* Get a new image gallery. This is the method other callers
* should use to get a gallery.
*
* @param string|bool $mode Mode to use. False to use the default
* @param IContextSource|null $context
* @return ImageGalleryBase
* @throws MWException
*/
static function factory($mode = false, IContextSource $context = null)
{
global $wgContLang;
self::loadModes();
if (!$context) {
$context = RequestContext::getMainAndWarn(__METHOD__);
}
if (!$mode) {
$galleryOpions = $context->getConfig()->get('GalleryOptions');
$mode = $galleryOpions['mode'];
}
$mode = $wgContLang->lc($mode);
if (isset(self::$modeMapping[$mode])) {
return new self::$modeMapping[$mode]($mode, $context);
} else {
throw new MWException("No gallery class registered for mode {$mode}");
}
}