From 89892137f059f6133e655cab50f466a4f406ddc4 Mon Sep 17 00:00:00 2001
From: Victor Dubiniuk <victor.dubiniuk@gmail.com>
Date: Fri, 28 Aug 2015 20:49:50 +0300
Subject: [PATCH] Load previews only for registered providers

---
 controller/documentcontroller.php | 1 +
 js/documents.js                   | 2 +-
 2 files changed, 2 insertions(+), 1 deletion(-)

diff --git a/controller/documentcontroller.php b/controller/documentcontroller.php
index 4bffdb56..c68a843d 100644
--- a/controller/documentcontroller.php
+++ b/controller/documentcontroller.php
@@ -169,6 +169,7 @@ class DocumentController extends Controller{
 				$documents[$key] = $document;
 			}
 			$documents[$key]['icon'] = preg_replace('/\.png$/', '.svg', \OCP\Template::mimetype_icon($document['mimetype']));
+			$documents[$key]['hasPreview'] = \OC::$server->getPreviewManager()->isMimeSupported($document['mimetype']);
 			$fileIds[] = $document['fileid'];
 		}
 
diff --git a/js/documents.js b/js/documents.js
index 2eabb8d7..0bcf1943 100644
--- a/js/documents.js
+++ b/js/documents.js
@@ -61,7 +61,7 @@ $.widget('oc.documentGrid', {
 		previewURL = OC.generateUrl('/core/preview.png?') + $.param(urlSpec);
 		previewURL = previewURL.replace('(', '%28').replace(')', '%29');
 		
-		if ( $('#previews_enabled').length ) {
+		if ( $('#previews_enabled').length && document.hasPreview) {
 			var img = new Image();
 			img.onload = function(){
 				var ready = function (node){