From 2525f8e532baed07f0809c7a4491d9a1dda93875 Mon Sep 17 00:00:00 2001
From: Dan Stillman <dstillman@zotero.org>
Date: Thu, 7 May 2015 00:59:53 -0400
Subject: [PATCH] Fix dragging items to collections

---
 chrome/content/zotero/xpcom/collectionTreeView.js | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/chrome/content/zotero/xpcom/collectionTreeView.js b/chrome/content/zotero/xpcom/collectionTreeView.js
index c2f22a4b9..b0f978248 100644
--- a/chrome/content/zotero/xpcom/collectionTreeView.js
+++ b/chrome/content/zotero/xpcom/collectionTreeView.js
@@ -2029,7 +2029,7 @@ Zotero.CollectionTreeView.prototype.drop = Zotero.Promise.coroutine(function* (r
 			if (targetCollectionID) {
 				let ids = newIDs.filter(function (itemID) {
 					var item = Zotero.Items.get(itemID);
-					return !item.getSource();
+					return item.isTopLevelItem();
 				});
 				var collection = yield Zotero.Collections.getAsync(targetCollectionID);
 				yield collection.addItems(ids);