From 075fa012868017c9cb49f1b92960bf02f4bf27ca Mon Sep 17 00:00:00 2001
From: Moonchild <moonchild@palemoon.org>
Date: Wed, 16 Sep 2020 19:39:33 +0000
Subject: Issue #1643 - Part 4: Hook up all the plumbing.

---
 dom/base/nsDocument.cpp | 26 ++++++++++++++++++++++++++
 1 file changed, 26 insertions(+)

(limited to 'dom/base/nsDocument.cpp')

diff --git a/dom/base/nsDocument.cpp b/dom/base/nsDocument.cpp
index de793bfab..48d23e325 100644
--- a/dom/base/nsDocument.cpp
+++ b/dom/base/nsDocument.cpp
@@ -1727,6 +1727,10 @@ NS_IMPL_CYCLE_COLLECTION_TRAVERSE_BEGIN_INTERNAL(nsDocument)
       cb.NoteXPCOMChild(mql);
     }
   }
+
+  if (tmp->mResizeObserverController) {
+    tmp->mResizeObserverController->Traverse(cb);
+  }
 NS_IMPL_CYCLE_COLLECTION_TRAVERSE_END
 
 NS_IMPL_CYCLE_COLLECTION_CLASS(nsDocument)
@@ -1832,6 +1836,10 @@ NS_IMPL_CYCLE_COLLECTION_UNLINK_BEGIN(nsDocument)
   }
 
   tmp->mInUnlinkOrDeletion = false;
+
+  if (tmp->mResizeObserverController) {
+    tmp->mResizeObserverController->Unlink();
+  }
 NS_IMPL_CYCLE_COLLECTION_UNLINK_END
 
 nsresult
@@ -12105,6 +12113,24 @@ nsDocument::QuerySelectorAll(const nsAString& aSelector, nsIDOMNodeList **aRetur
   return nsINode::QuerySelectorAll(aSelector, aReturn);
 }
 
+void
+nsDocument::AddResizeObserver(ResizeObserver* aResizeObserver)
+{
+  if (!mResizeObserverController) {
+    mResizeObserverController = MakeUnique<ResizeObserverController>(this);
+  }
+
+  mResizeObserverController->AddResizeObserver(aResizeObserver);
+}
+
+void
+nsDocument::ScheduleResizeObserversNotification() const
+{
+  if (mResizeObserverController) {
+    mResizeObserverController->ScheduleNotification();
+  }
+}
+
 already_AddRefed<nsIDocument>
 nsIDocument::Constructor(const GlobalObject& aGlobal,
                          ErrorResult& rv)
-- 
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