From 1666a45c6b5cf4e475ec5520d50311e63eb90926 Mon Sep 17 00:00:00 2001
From: JC Brand <jc@opkode.com>
Date: Thu, 30 Jun 2016 14:15:05 +0200
Subject: [PATCH] Handle case where `this` of overridden method is not the
 pluggable

due for example to it being called by an event handler.
---
 src/converse-pluggable.js | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/src/converse-pluggable.js b/src/converse-pluggable.js
index 783ae8ad4..521c4b07d 100644
--- a/src/converse-pluggable.js
+++ b/src/converse-pluggable.js
@@ -27,6 +27,13 @@
              * original method.
              */
             if (typeof super_method === "function") {
+                if (typeof this._super === "undefined") {
+                    // We're not on the context of the plugged object.
+                    // This can happen when the overridden method is called via
+                    // an event handler. In this case, we simply tack on the
+                    // _super obj.
+                    this._super = {};
+                }
                 this._super[key] = super_method.bind(this);
             }
             return value.apply(this, _.rest(arguments, 3));