[orca] Don't look for unrelated labels if the root object contains a page tab list

[Joanmarie Diggs <joanied src gnome org>]

commit b02b0d43e61c0576b51635196756f3414bd53491
Author: Joanmarie Diggs <jdiggs igalia com>
Date:   Tue Sep 8 13:26:33 2015 -0400

    Don't look for unrelated labels if the root object contains a page tab list

 src/orca/script_utilities.py |    7 +++++++
 1 files changed, 7 insertions(+), 0 deletions(-)
---
diff --git a/src/orca/script_utilities.py b/src/orca/script_utilities.py
index 394f395..bbbbd95 100644
--- a/src/orca/script_utilities.py
+++ b/src/orca/script_utilities.py
@@ -1528,6 +1528,10 @@ class Utilities:
 
         return rv
 
+    def hasPageTabList(self, root):
+        isPageTabList = lambda x: x and x.getRole() == pyatspi.ROLE_PAGE_TAB_LIST
+        return pyatspi.findDescendant(root, isPageTabList) is not None
+
     def unrelatedLabels(self, root, onlyShowing=True):
         """Returns a list containing all the unrelated (i.e., have no
         relations to anything and are not a fundamental element of a
@@ -1544,6 +1548,9 @@ class Utilities:
         if self._script.spellcheck and self._script.spellcheck.isCheckWindow(root):
             return []
 
+        if self.hasPageTabList(root):
+            return []
+
         hasRole = lambda x: x and x.getRole() == pyatspi.ROLE_LABEL
         allLabels = pyatspi.findAllDescendants(root, hasRole)
         try: