This shows that popovers currently lack accessibility.
menu.ui menu.txt \
menubutton.ui menubutton.txt \
menubutton2.ui menubutton2.txt \
+ menubutton3.ui menubutton3.txt \
combos.ui combos.txt \
listbox.ui listbox.txt \
stack.ui stack.txt \
--- /dev/null
+window1
+ "frame"
+ index: 0
+ state: enabled resizable sensitive showing visible
+ toolkit: gtk
+ <AtkComponent>
+ layer: window
+ alpha: 1
+ menubutton
+ "toggle button"
+ parent: window1
+ index: 0
+ name: Menu
+ state: enabled focusable sensitive showing visible
+ toolkit: gtk
+ <AtkComponent>
+ layer: widget
+ alpha: 1
+ <AtkImage>
+ image size: -1 x -1
+ image description: (null)
+ <AtkAction>
+ action 0 name: click
+ action 0 description: Clicks the button
--- /dev/null
+<?xml version="1.0" encoding="UTF-8"?>
+<interface>
+ <!-- interface-requires gtk+ 3.0 -->
+ <menu id="menu">
+ <section>
+ <item>
+ <attribute name="label">New</attribute>
+ </item>
+ </section>
+ </menu>
+ <object class="GtkWindow" id="window1">
+ <property name="can_focus">False</property>
+ <child>
+ <object class="GtkMenuButton" id="menubutton">
+ <property name="visible">True</property>
+ <property name="can_focus">True</property>
+ <property name="menu-model">menu</property>
+ <property name="use-popover">True</property>
+ </object>
+ </child>
+ </object>
+</interface>