From 38c7e501e0d1a31c9769cc649803bb574b449d45 Mon Sep 17 00:00:00 2001
From: Damien Elmes <dae@users.noreply.github.com>
Date: Wed, 22 Sep 2021 21:45:14 +1000
Subject: [PATCH] Merge pull request #1384 from
 hikaru-y/fix-previewer-memory-leak

Fix memory leak in previewer

(cherry picked from commit 1cd911ab637e6408df4199f80b024f1171ca503c)
---
 qt/aqt/browser/previewer.py | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/qt/aqt/browser/previewer.py b/qt/aqt/browser/previewer.py
index b9a25f7d2..b325655ae 100644
--- a/qt/aqt/browser/previewer.py
+++ b/qt/aqt/browser/previewer.py
@@ -47,6 +47,7 @@ class Previewer(QDialog):
         self, parent: QWidget, mw: AnkiQt, on_close: Callable[[], None]
     ) -> None:
         super().__init__(None, Qt.Window)
+        mw.garbage_collect_on_dialog_finish(self)
         self._open = True
         self._parent = parent
         self._close_callback = on_close
@@ -123,6 +124,7 @@ class Previewer(QDialog):
     def _on_close(self) -> None:
         self._open = False
         self._close_callback()
+        self._web = None
 
     def _setup_web_view(self) -> None:
         self._web.stdHtml(