Auto merge of #7592 - nox:nonelementparentnode, r=jdm

Introduce NonElementParentNode

This is the interface where Document.getElementById() belong.

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3 files changed, 14 insertions, 1 deletions

diff --git a/components/script/dom/webidls/Document.webidl b/components/script/dom/webidls/Document.webidl
index 203e8d00d1c..fa69f6f95f7 100644
--- a/components/script/dom/webidls/Document.webidl
+++ b/components/script/dom/webidls/Document.webidl
@@ -26,7 +26,6 @@ interface Document : Node {
   HTMLCollection getElementsByTagName(DOMString localName);
   HTMLCollection getElementsByTagNameNS(DOMString? namespace, DOMString localName);
   HTMLCollection getElementsByClassName(DOMString classNames);
-  Element? getElementById(DOMString elementId);
 
   [NewObject, Throws]
   Element createElement(DOMString localName);
@@ -65,6 +64,8 @@ interface Document : Node {
   TreeWalker createTreeWalker(Node root, optional unsigned long whatToShow = 0xFFFFFFFF,
                               optional NodeFilter? filter = null);
 };
+
+Document implements NonElementParentNode;
 Document implements ParentNode;
 
 enum DocumentReadyState { "loading", "interactive", "complete" };
diff --git a/components/script/dom/webidls/DocumentFragment.webidl b/components/script/dom/webidls/DocumentFragment.webidl
index 7dfbcc573df..eb2b7d6696d 100644
--- a/components/script/dom/webidls/DocumentFragment.webidl
+++ b/components/script/dom/webidls/DocumentFragment.webidl
@@ -8,4 +8,5 @@
 interface DocumentFragment : Node {
 };
 
+DocumentFragment implements NonElementParentNode;
 DocumentFragment implements ParentNode;
diff --git a/components/script/dom/webidls/NonElementParentNode.webidl b/components/script/dom/webidls/NonElementParentNode.webidl
new file mode 100644
index 00000000000..b1bd854ab93
--- /dev/null
+++ b/components/script/dom/webidls/NonElementParentNode.webidl
@@ -0,0 +1,11 @@
+/* -*- Mode: IDL; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+// https://dom.spec.whatwg.org/#nonelementparentnode
+[NoInterfaceObject,
+ Exposed=Window]
+interface NonElementParentNode {
+  Element? getElementById(DOMString elementId);
+};