3 files changed, 23 insertions, 1 deletions
diff --git a/toolkit/content/jar.mn b/toolkit/content/jar.mn
index 8b7b35b61..d79403605 100644
--- a/toolkit/content/jar.mn
+++ b/toolkit/content/jar.mn
@@ -96,7 +96,7 @@ toolkit.jar:
    content/global/bindings/menulist.xml        (widgets/menulist.xml)
    content/global/bindings/notification.xml    (widgets/notification.xml)
    content/global/bindings/numberbox.xml       (widgets/numberbox.xml)
-   content/global/bindings/popup.xml           (widgets/popup.xml)
+*  content/global/bindings/popup.xml           (widgets/popup.xml)
 *  content/global/bindings/preferences.xml     (widgets/preferences.xml)
    content/global/bindings/progressmeter.xml   (widgets/progressmeter.xml)
    content/global/bindings/radio.xml           (widgets/radio.xml)
diff --git a/toolkit/content/widgets/popup.xml b/toolkit/content/widgets/popup.xml
index bb1a5eeee..c8a395c40 100644
--- a/toolkit/content/widgets/popup.xml
+++ b/toolkit/content/widgets/popup.xml
@@ -25,8 +25,21 @@
         </getter>
       </property>
 
+#ifdef MOZ_WIDGET_GTK
+      <property name="state" readonly="true">
+        <getter>
+        <![CDATA[
+          if (this.hasAttribute('_moz-nativemenupopupstate'))
+            return this.getAttribute('_moz-nativemenupopupstate');
+          else
+            return this.popupBoxObject.popupState;
+        ]]>
+        </getter>
+      </property>
+#else
       <property name="state" readonly="true"
                 onget="return this.popupBoxObject.popupState"/>
+#endif
 
       <property name="triggerNode" readonly="true"
                 onget="return this.popupBoxObject.triggerNode"/>
diff --git a/toolkit/content/xul.css b/toolkit/content/xul.css
index 24a6713f9..0aa0d3a21 100644
--- a/toolkit/content/xul.css
+++ b/toolkit/content/xul.css
@@ -307,6 +307,15 @@ toolbar[type="menubar"][autohide="true"][inactive="true"]:not([customizing="true
 }
 %endif
 
+%ifdef MOZ_WIDGET_GTK
+window[shellshowingmenubar="true"] menubar,
+window[shellshowingmenubar="true"]
+toolbar[type="menubar"]:not([customizing="true"]) {
+  /* If a system-wide global menubar is in use, hide the XUL menubar. */
+  display: none !important;
+}
+%endif
+
 toolbarseparator {
   -moz-binding: url("chrome://global/content/bindings/toolbar.xml#toolbardecoration");
 }