AppIndicator.Indicator.prototype.set_secondary_activate_target

function set_secondary_activate_target(menuitem:Gtk.Widget):void {
    // Gjs wrapper for app_indicator_set_secondary_activate_target()
}

Set the menuitem to be activated when a secondary activation event (i.e. a middle-click) is emitted over the AppIndicator.Indicator icon/label.

The menuitem can be also a complex Gtk.Widget, but to get activated when a secondary activation occurs in the #Appindicator, it must be a visible and active child (or inner-child) of the #AppIndicator:menu.

Setting menuitem to null causes to disable this feature.