#774: detect changes to the number of desktops or their name

git-svn-id: https://xpra.org/svn/Xpra/trunk@8362 3bb7dfac-3a0b-4e04-842a-767bc560f471

src/xpra/client/ui_client_base.py

@@ -639,6 +639,11 @@ def tray_exit(*args):
         tray_widget.show()
         return ClientTray(client, wid, w, h, tray_widget, self.mmap_enabled, self.mmap)
 
+
+    def desktops_changed(self, *args):
+        workspacelog("desktops_changed%s", args)
+        self.screen_size_changed(*args)
+
     def workspace_changed(self, *args):
         workspacelog("workspace_changed%s", args)
         for win in self._id_to_window.values():

src/xpra/platform/xposix/gui.py

@@ -428,5 +428,7 @@ def _handle_root_prop_changed(self, obj, prop):
             self.client.screen_size_changed("from %s event" % self._root_props_watcher)
         elif prop=="_NET_CURRENT_DESKTOP":
             self.client.workspace_changed("from %s event" % self._root_props_watcher)
+        elif prop in ("_NET_DESKTOP_NAMES", "_NET_NUMBER_OF_DESKTOPS"):
+            self.client.desktops_changed("from %s event" % self._root_props_watcher)
         else:
             log.error("unknown property %s", prop)