allow passing the fileinfo to the preview manager

core/ajax/preview.php

@@ -53,7 +53,7 @@ if (!$info instanceof OCP\Files\FileInfo || !$always && !\OC::$server->getPrevie
 	\OC_Response::setStatus(404);
 } else {
 	$preview = new \OC\Preview(\OC_User::getUser(), 'files');
-	$preview->setFile($file);
+	$preview->setFile($file, $info);
 	$preview->setMaxX($maxX);
 	$preview->setMaxY($maxY);
 	$preview->setScalingUp($scalingUp);

lib/private/preview.php

@@ -252,12 +252,13 @@ class Preview {
 	 * Sets the path of the file you want a preview of
 	 *
 	 * @param string $file
+	 * @param \OCP\Files\FileInfo|null $info
 	 *
 	 * @return \OC\Preview
 	 */
-	public function setFile($file) {
+	public function setFile($file, $info = null) {
 		$this->file = $file;
-		$this->info = null;
+		$this->info = $info;
 
 		if ($file !== '') {
 			$this->getFileInfo();