[orca] Attempt to handle children-changed:add event flood from menus

[Joanmarie Diggs <joanied src gnome org>]

commit e9740d7221fcc7b090f5e33ddca8fd007aa3b3c7
Author: Joanmarie Diggs <jdiggs igalia com>
Date:   Sat Mar 11 13:59:23 2017 -0500

    Attempt to handle children-changed:add event flood from menus

 src/orca/event_manager.py |    8 ++++++++
 1 files changed, 8 insertions(+), 0 deletions(-)
---
diff --git a/src/orca/event_manager.py b/src/orca/event_manager.py
index 63088bd..89f767e 100644
--- a/src/orca/event_manager.py
+++ b/src/orca/event_manager.py
@@ -165,6 +165,14 @@ class EventManager:
             debug.println(debug.LEVEL_INFO, msg, True)
             return True
 
+
+        if event.type.startswith('object:children-changed:add'):
+            if role in [pyatspi.ROLE_MENU,
+                        pyatspi.ROLE_MENU_ITEM]:
+                msg = 'EVENT MANAGER: Ignoring event type due to role'
+                debug.println(debug.LEVEL_INFO, msg, True)
+                return True
+
         if event.type.startswith('object:state-changed:sensitive'):
             if role in [pyatspi.ROLE_MENU_ITEM,
                         pyatspi.ROLE_CHECK_MENU_ITEM,