From 4b8ab2dbba64f950e28cbf4834189b20def391ac Mon Sep 17 00:00:00 2001
From: Paulo Reis <paulojreis@gmail.com>
Date: Mon, 1 Aug 2016 13:35:49 +0100
Subject: [PATCH] More comments.

---
 services/web/public/coffee/ide/SafariScrollPatcher.coffee | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/services/web/public/coffee/ide/SafariScrollPatcher.coffee b/services/web/public/coffee/ide/SafariScrollPatcher.coffee
index 1859511c99..07ad2e7565 100644
--- a/services/web/public/coffee/ide/SafariScrollPatcher.coffee
+++ b/services/web/public/coffee/ide/SafariScrollPatcher.coffee
@@ -69,6 +69,9 @@ define [
 					# editor.
 					e.preventDefault()
 
+			# "loaded" event is emitted from the pdfViewer controller $scope. This means
+			# that the previous PDF DOM element was destroyed and a new one is available,
+			# so we need to grab the elements and set the listeners again.
 			$scope.$on "loaded", () =>
 				@setListeners()