From 8b71cda1956ab640ad76bea36e7971476aa78bcf Mon Sep 17 00:00:00 2001
From: wolfbeast <mcwerewolf@gmail.com>
Date: Wed, 27 Jun 2018 16:00:53 +0200
Subject: Stabilize and align Intersection Observers

- Fixes several crashes
- Aligns the feature with the W3C WD spec

Tag #249
---
 dom/base/FragmentOrElement.h | 8 ++------
 1 file changed, 2 insertions(+), 6 deletions(-)

(limited to 'dom/base/FragmentOrElement.h')

diff --git a/dom/base/FragmentOrElement.h b/dom/base/FragmentOrElement.h
index 1cd8033bb..7c74e9cd4 100644
--- a/dom/base/FragmentOrElement.h
+++ b/dom/base/FragmentOrElement.h
@@ -21,6 +21,7 @@
 #include "nsIWeakReference.h"             // base class
 #include "nsNodeUtils.h"                  // class member nsNodeUtils::CloneNodeImpl
 #include "nsIHTMLCollection.h"
+#include "nsDataHashtable.h"
 
 class ContentUnbinder;
 class nsContentList;
@@ -353,12 +354,7 @@ public:
     /**
      * Registered Intersection Observers on the element.
      */
-    struct IntersectionObserverRegistration {
-      DOMIntersectionObserver* observer;
-      int32_t previousThreshold;
-    };
-
-    nsTArray<IntersectionObserverRegistration> mRegisteredIntersectionObservers;
+    nsDataHashtable<nsPtrHashKey<DOMIntersectionObserver>, int32_t> mRegisteredIntersectionObservers;
   };
 
 protected:
-- 
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