From eef86bf37ebf8c4f9eb4cee50b10aedecfe647aa Mon Sep 17 00:00:00 2001
From: Damien Elmes <gpg@ankiweb.net>
Date: Sun, 21 Apr 2019 19:12:04 +1000
Subject: [PATCH] don't try set filter if webview already deleted

https://anki.tenderapp.com/discussions/add-ons/32496-add-on-error
---
 aqt/webview.py | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/aqt/webview.py b/aqt/webview.py
index 0af406cfe..20498b15b 100644
--- a/aqt/webview.py
+++ b/aqt/webview.py
@@ -348,14 +348,14 @@ body {{ zoom: {}; background: {}; {} }}
         return False
 
     def _onBridgeCmd(self, cmd):
-        if not self._filterSet:
-            self.focusProxy().installEventFilter(self)
-            self._filterSet = True
-
         if self._shouldIgnoreWebEvent():
             print("ignored late bridge cmd", cmd)
             return
 
+        if not self._filterSet:
+            self.focusProxy().installEventFilter(self)
+            self._filterSet = True
+
         if cmd == "domDone":
             self._domDone = True
             self._maybeRunActions()