From abccdd304f196e645863a852c4ca0863025595bc Mon Sep 17 00:00:00 2001
From: Francis Lachapelle <flachapelle@inverse.ca>
Date: Mon, 30 Jan 2017 15:52:07 -0500
Subject: [PATCH] (js) Ignore mouse events in scrollbars of Month

Firefox is bubbling the mouse down event on scrollbars so it has to be
ignored for proper drag'n'drop.

Fixes #3990.
---
 .../Scheduler/sgDraggableCalendarBlock.directive.js  | 12 +++++++++++-
 1 file changed, 11 insertions(+), 1 deletion(-)

diff --git a/UI/WebServerResources/js/Scheduler/sgDraggableCalendarBlock.directive.js b/UI/WebServerResources/js/Scheduler/sgDraggableCalendarBlock.directive.js
index 4e0d98079..31a9080cd 100644
--- a/UI/WebServerResources/js/Scheduler/sgDraggableCalendarBlock.directive.js
+++ b/UI/WebServerResources/js/Scheduler/sgDraggableCalendarBlock.directive.js
@@ -81,10 +81,20 @@
       }
 
       function onDragDetect(ev) {
-        var dragMode, pointerHandler;
+        var dragMode, pointerHandler, hasVerticalScrollbar, rect;
 
         ev.stopPropagation();
 
+        hasVerticalScrollbar = ev.target.scrollHeight > ev.target.clientHeight + 1;
+
+        if (hasVerticalScrollbar) {
+          // Check if mouse click is inside scrollbar
+          rect = ev.target.getBoundingClientRect();
+          scrollableZone = rect.left + rect.width - 18;
+          if (ev.pageX > scrollableZone)
+            return;
+        }
+
         dragMode = 'move-event';
 
         if (scope.block && scope.block.component) {