[orca] Improve presentation when Page_Up/Page_Down is used in editable combo boxes

[Joanmarie Diggs <joanied src gnome org>]

commit 29671a94c54370a326f9983fa1bec2ce1f27bd61
Author: Joanmarie Diggs <jdiggs igalia com>
Date:   Sat Mar 11 13:49:07 2017 -0500

    Improve presentation when Page_Up/Page_Down is used in editable combo boxes

 src/orca/script_utilities.py |    5 ++++-
 1 files changed, 4 insertions(+), 1 deletions(-)
---
diff --git a/src/orca/script_utilities.py b/src/orca/script_utilities.py
index 1366beb..ee14320 100644
--- a/src/orca/script_utilities.py
+++ b/src/orca/script_utilities.py
@@ -2958,7 +2958,7 @@ class Utilities:
                 return True
             if lastKey == "Return" and event.any_data != "\n":
                 return True
-            if lastKey in ["Up", "Down"]:
+            if lastKey in ["Up", "Down", "Page_Up", "Page_Down"]:
                 return self.isEditableDescendantOfComboBox(event.source)
 
         return False
@@ -4250,6 +4250,9 @@ class Utilities:
         if not keyString in ["Page_Up", "Page_Down"]:
             return False
 
+        if self.isEditableDescendantOfComboBox(orca_state.locusOfFocus):
+            return False
+
         return not (mods & keybindings.CTRL_MODIFIER_MASK)
 
     def lastInputEventWasFileBoundaryNav(self):