diff --git a/dom/html/HTMLMenuElement.cpp b/dom/html/HTMLMenuElement.cpp
index 6c096084ac..a099a5289e 100644
--- a/dom/html/HTMLMenuElement.cpp
+++ b/dom/html/HTMLMenuElement.cpp
@@ -137,9 +137,9 @@ HTMLMenuElement::ParseAttribute(int32_t aNamespaceID,
const nsAString& aValue,
nsAttrValue& aResult)
{
- if (aNamespaceID == kNameSpaceID_None && aAttribute == nsGkAtoms::type) {
- bool success = aResult.ParseEnumValue(aValue, kMenuTypeTable,
- false);
+ if (aNamespaceID == kNameSpaceID_None && aAttribute == nsGkAtoms::type &&
+ Preferences::GetBool("dom.menuitem.enabled")) {
+ bool success = aResult.ParseEnumValue(aValue, kMenuTypeTable, false);
if (success) {
mType = aResult.GetEnumValue();
} else {
diff --git a/dom/html/HTMLMenuItemElement.cpp b/dom/html/HTMLMenuItemElement.cpp
index 5c5cf8d767..6cf4eb40c2 100644
--- a/dom/html/HTMLMenuItemElement.cpp
+++ b/dom/html/HTMLMenuItemElement.cpp
@@ -7,12 +7,22 @@
#include "mozilla/BasicEvents.h"
#include "mozilla/EventDispatcher.h"
+#include "mozilla/Preferences.h"
#include "mozilla/dom/HTMLMenuItemElementBinding.h"
+#include "mozilla/dom/HTMLUnknownElement.h"
#include "nsAttrValueInlines.h"
#include "nsContentUtils.h"
-
-NS_IMPL_NS_NEW_HTML_ELEMENT_CHECK_PARSER(MenuItem)
+nsGenericHTMLElement*
+NS_NewHTMLMenuItemElement(already_AddRefed&& aNodeInfo,
+ mozilla::dom::FromParser aFromParser) {
+ RefPtr nodeInfo(aNodeInfo);
+ if (mozilla::Preferences::GetBool("dom.menuitem.enabled")) {
+ return new mozilla::dom::HTMLMenuItemElement(nodeInfo.forget(), aFromParser);
+ } else {
+ return new mozilla::dom::HTMLUnknownElement(nodeInfo.forget());
+ }
+}
namespace mozilla {
namespace dom {
diff --git a/dom/html/test/browser_content_contextmenu_userinput.js b/dom/html/test/browser_content_contextmenu_userinput.js
index 7d0387715b..845ba718e3 100644
--- a/dom/html/test/browser_content_contextmenu_userinput.js
+++ b/dom/html/test/browser_content_contextmenu_userinput.js
@@ -4,6 +4,9 @@ const kPage = "http://example.org/browser/" +
"dom/html/test/file_content_contextmenu.html";
add_task(function* () {
+ yield SpecialPowers.pushPrefEnv({
+ set: [["dom.menuitem.enabled", true]],
+ });
yield BrowserTestUtils.withNewTab({
gBrowser,
url: kPage
diff --git a/dom/html/test/mochitest.ini b/dom/html/test/mochitest.ini
index 5c9c66e614..dcbb73840a 100644
--- a/dom/html/test/mochitest.ini
+++ b/dom/html/test/mochitest.ini
@@ -1,4 +1,6 @@
[DEFAULT]
+prefs =
+ dom.menuitem.enabled=true # only for test_bug617528.html
support-files =
347174transform.xsl
347174transformable.xml
diff --git a/dom/tests/mochitest/general/test_interfaces.html b/dom/tests/mochitest/general/test_interfaces.html
index eb09f5962a..5eb47d1018 100644
--- a/dom/tests/mochitest/general/test_interfaces.html
+++ b/dom/tests/mochitest/general/test_interfaces.html
@@ -496,8 +496,6 @@ var interfaceNamesInGlobalScope =
"HTMLMediaElement",
// IMPORTANT: Do not change this list without review from a DOM peer!
"HTMLMenuElement",
-// IMPORTANT: Do not change this list without review from a DOM peer!
- "HTMLMenuItemElement",
// IMPORTANT: Do not change this list without review from a DOM peer!
"HTMLMetaElement",
// IMPORTANT: Do not change this list without review from a DOM peer!
diff --git a/dom/tests/mochitest/webcomponents/htmlconstructor_builtin_tests.js b/dom/tests/mochitest/webcomponents/htmlconstructor_builtin_tests.js
index dd65151482..50fc351631 100644
--- a/dom/tests/mochitest/webcomponents/htmlconstructor_builtin_tests.js
+++ b/dom/tests/mochitest/webcomponents/htmlconstructor_builtin_tests.js
@@ -72,7 +72,6 @@
['mark', ''],
['marquee', 'Div'],
['menu', 'Menu'],
- ['menuitem', 'MenuItem'],
['meta', 'Meta'],
['meter', 'Meter'],
['nav', ''],
diff --git a/dom/webidl/EventHandler.webidl b/dom/webidl/EventHandler.webidl
index 484a8e95cd..e7dc4931bd 100644
--- a/dom/webidl/EventHandler.webidl
+++ b/dom/webidl/EventHandler.webidl
@@ -82,6 +82,7 @@ interface GlobalEventHandlers {
attribute EventHandler onseeked;
attribute EventHandler onseeking;
attribute EventHandler onselect;
+ [Pref="dom.menuitem.enabled"]
attribute EventHandler onshow;
//(Not implemented)attribute EventHandler onsort;
attribute EventHandler onstalled;
diff --git a/dom/webidl/HTMLElement.webidl b/dom/webidl/HTMLElement.webidl
index 815f4a3bd0..cd1fd7d6aa 100644
--- a/dom/webidl/HTMLElement.webidl
+++ b/dom/webidl/HTMLElement.webidl
@@ -49,10 +49,8 @@ interface HTMLElement : Element {
attribute DOMString contentEditable;
[Pure]
readonly attribute boolean isContentEditable;
- [Pure]
+ [Pure, Pref="dom.menuitem.enabled"]
readonly attribute HTMLMenuElement? contextMenu;
- //[SetterThrows]
- // attribute HTMLMenuElement? contextMenu;
[CEReactions, SetterThrows, Pure]
attribute boolean spellcheck;
diff --git a/dom/webidl/HTMLMenuElement.webidl b/dom/webidl/HTMLMenuElement.webidl
index 1194226c5b..dc9a78ae8a 100644
--- a/dom/webidl/HTMLMenuElement.webidl
+++ b/dom/webidl/HTMLMenuElement.webidl
@@ -17,9 +17,9 @@ interface MenuBuilder;
// http://www.whatwg.org/specs/web-apps/current-work/#the-menu-element
[HTMLConstructor]
interface HTMLMenuElement : HTMLElement {
- [CEReactions, SetterThrows]
+ [CEReactions, SetterThrows, Pref="dom.menuitem.enabled"]
attribute DOMString type;
- [CEReactions, SetterThrows]
+ [CEReactions, SetterThrows, Pref="dom.menuitem.enabled"]
attribute DOMString label;
};
diff --git a/dom/webidl/HTMLMenuItemElement.webidl b/dom/webidl/HTMLMenuItemElement.webidl
index f091045017..6005bd7d2f 100644
--- a/dom/webidl/HTMLMenuItemElement.webidl
+++ b/dom/webidl/HTMLMenuItemElement.webidl
@@ -12,7 +12,7 @@
*/
// http://www.whatwg.org/specs/web-apps/current-work/#the-menuitem-element
-[HTMLConstructor]
+[HTMLConstructor, Pref="dom.menuitem.enabled"]
interface HTMLMenuItemElement : HTMLElement {
[CEReactions, SetterThrows]
attribute DOMString type;
diff --git a/layout/style/res/html.css b/layout/style/res/html.css
index 4f43f3134f..8593abaab7 100644
--- a/layout/style/res/html.css
+++ b/layout/style/res/html.css
@@ -577,8 +577,10 @@ ul, menu, dir {
padding-inline-start: 40px;
}
-menu[type="context"] {
- display: none !important;
+@supports -moz-bool-pref("dom.menuitem.enabled") {
+ menu[type="context"] {
+ display: none !important;
+ }
}
ol {
diff --git a/modules/libpref/init/all.js b/modules/libpref/init/all.js
index 59295462ca..bc904c7a0a 100644
--- a/modules/libpref/init/all.js
+++ b/modules/libpref/init/all.js
@@ -4984,6 +4984,9 @@ pref("dom.mozInputMethod.enabled", false);
// Enable mapped array buffer by default.
pref("dom.mapped_arraybuffer.enabled", true);
+// Whether