Allow only thumbnails from images temporary

Author: abelgardep

CHANGELOG.md

@@ -2,7 +2,6 @@
 - Native Android ShareSheet
 - Option to log HTTP requests and responses
 - Move sort menu from toolbar to files view
-- Improvements in thumbnails
 - Update background images
 - Search when sharing with ownCloud
 - Bug fixes, including:

owncloudApp/src/main/java/com/owncloud/android/operations/SynchronizeFolderOperation.java

@@ -353,7 +353,7 @@ private void mergeRemoteFolder(ArrayList<RemoteFile> remoteFolderAndFiles)
                 updatedLocalFile.setFileName(remoteFile.getFileName());
                 // remote eTag will not be set unless file CONTENTS are synchronized
                 updatedLocalFile.setEtag(localFile.getEtag());
-                if (!updatedLocalFile.isFolder() &&
+                if (!updatedLocalFile.isFolder() && updatedLocalFile.isImage() &&
                         remoteFile.getModificationTimestamp() != localFile.getModificationTimestamp()) {
                     updatedLocalFile.setNeedsUpdateThumbnail(true);
                 }

owncloudApp/src/main/java/com/owncloud/android/ui/adapter/FileListListAdapter.java

@@ -284,7 +284,7 @@ public View getView(int position, View convertView, ViewGroup parent) {
             } else {
                 // Set file icon depending on its mimetype. Ask for thumbnail later.
                 fileIcon.setImageResource(MimetypeIconUtil.getFileTypeIconId(file.getMimetype(), file.getFileName()));
-                if (file.getRemoteId() != null) {
+                if (file.getRemoteId() != null && file.isImage()) {
                     // Thumbnail in Cache?
                     Bitmap thumbnail = ThumbnailsCacheManager.getBitmapFromDiskCache(file.getRemoteId());
                     if (thumbnail != null && !file.needsUpdateThumbnail()) {