From 3758434680616e91edf696e546fe3cc3b1d4da9c Mon Sep 17 00:00:00 2001
From: "Matt A. Tobin" <email@mattatobin.com>
Date: Fri, 17 Apr 2020 06:38:37 -0400
Subject: Bug 1408341 - Implement assignedSlot on Element and Text

Tag #1375
---
 dom/base/FragmentOrElement.cpp | 19 +++++++++++++++++++
 1 file changed, 19 insertions(+)

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

diff --git a/dom/base/FragmentOrElement.cpp b/dom/base/FragmentOrElement.cpp
index 592f5447d..486bbc88c 100644
--- a/dom/base/FragmentOrElement.cpp
+++ b/dom/base/FragmentOrElement.cpp
@@ -123,6 +123,7 @@
 #include "mozilla/CORSMode.h"
 
 #include "mozilla/dom/ShadowRoot.h"
+#include "mozilla/dom/HTMLSlotElement.h"
 #include "mozilla/dom/HTMLTemplateElement.h"
 
 #include "nsStyledElement.h"
@@ -614,6 +615,9 @@ FragmentOrElement::nsDOMSlots::Traverse(nsCycleCollectionTraversalCallback &cb)
   NS_CYCLE_COLLECTION_NOTE_EDGE_NAME(cb, "mExtendedSlots->mContainingShadow");
   cb.NoteXPCOMChild(NS_ISUPPORTS_CAST(nsIContent*, mExtendedSlots->mContainingShadow));
 
+  NS_CYCLE_COLLECTION_NOTE_EDGE_NAME(cb, "mExtendedSlots->mAssignedSlot");
+  cb.NoteXPCOMChild(NS_ISUPPORTS_CAST(nsIContent*, mExtendedSlots->mAssignedSlot.get()));
+
   NS_CYCLE_COLLECTION_NOTE_EDGE_NAME(cb, "mExtendedSlots->mXBLBinding");
   cb.NoteNativeChild(mExtendedSlots->mXBLBinding,
                      NS_CYCLE_COLLECTION_PARTICIPANT(nsXBLBinding));
@@ -657,6 +661,7 @@ FragmentOrElement::nsDOMSlots::Unlink()
   mExtendedSlots->mLabelsList = nullptr;
   mExtendedSlots->mShadowRoot = nullptr;
   mExtendedSlots->mContainingShadow = nullptr;
+  mExtendedSlots->mAssignedSlot = nullptr;
   MOZ_ASSERT(!(mExtendedSlots->mXBLBinding));
   mExtendedSlots->mXBLInsertionParent = nullptr;
   if (mExtendedSlots->mCustomElementData) {
@@ -1126,6 +1131,20 @@ FragmentOrElement::GetExistingDestInsertionPoints() const
   return nullptr;
 }
 
+HTMLSlotElement*
+FragmentOrElement::GetAssignedSlot() const
+{
+  nsExtendedDOMSlots* slots = GetExistingExtendedDOMSlots();
+  return slots ? slots->mAssignedSlot.get() : nullptr;
+}
+
+void
+FragmentOrElement::SetAssignedSlot(HTMLSlotElement* aSlot)
+{
+  nsExtendedDOMSlots* slots = ExtendedDOMSlots();
+  slots->mAssignedSlot = aSlot;
+}
+
 void
 FragmentOrElement::SetXBLInsertionParent(nsIContent* aContent)
 {
-- 
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