[orca] Add some more debugging output

[Joanmarie Diggs <joanied src gnome org>]

commit 541ceaed1536779307f0fd2929570d2af667c25c
Author: Joanmarie Diggs <jdiggs igalia com>
Date:   Wed Jul 1 14:58:11 2020 +0200

    Add some more debugging output

 src/orca/eventsynthesizer.py | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)
---
diff --git a/src/orca/eventsynthesizer.py b/src/orca/eventsynthesizer.py
index 6e632c8a9..70869d06b 100644
--- a/src/orca/eventsynthesizer.py
+++ b/src/orca/eventsynthesizer.py
@@ -401,7 +401,14 @@ def _getAccessibleAtPoint(root, x, y):
 
 def _obscuringBanner(obj):
     document = _containingDocument(obj)
-    if not document and "Component" in pyatspi.listInterfaces(document):
+    if not document:
+        msg = "EVENT SYNTHESIZER: No obscuring banner found for %s. No document." % obj
+        debug.println(debug.LEVEL_INFO, msg, True)
+        return None
+
+    if not "Component" in pyatspi.listInterfaces(document):
+        msg = "EVENT SYNTHESIZER: No obscuring banner found for %s. No doc iface." % obj
+        debug.println(debug.LEVEL_INFO, msg, True)
         return None
 
     objX, objY, objWidth, objHeight = _objectExtents(obj)