From 8ec8f6b45c30f5138fe60ee23b967b067fdded2f Mon Sep 17 00:00:00 2001
From: Eitan Isaacson <eitan@monotonous.org>
Date: Thu, 27 Feb 2020 16:54:59 +0000
Subject: [PATCH] Bug 1618364 - Add OSX accessible lifecycle notifications.
 r=morgan

Differential Revision: https://phabricator.services.mozilla.com/D64481

--HG--
extra : moz-landing-system : lando
---
 accessible/mac/mozAccessible.mm | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/accessible/mac/mozAccessible.mm b/accessible/mac/mozAccessible.mm
index 1c0ae622ec9c..a1c2be57a043 100644
--- a/accessible/mac/mozAccessible.mm
+++ b/accessible/mac/mozAccessible.mm
@@ -1142,9 +1142,16 @@ struct RoleDescrComparator {
   if (curNative) [mChildren addObject:curNative];
 }
 
+- (BOOL)accessibilityNotifiesWhenDestroyed {
+  return YES;
+}
+
 - (void)expire {
   NS_OBJC_BEGIN_TRY_ABORT_BLOCK;
 
+  NSAccessibilityPostNotification(
+      self, NSAccessibilityUIElementDestroyedNotification);
+
   [self invalidateChildren];
 
   mGeckoAccessible = 0;