[orca] Grab focus on image links during caret navigation

[Joanmarie Diggs <joanied src gnome org>]

commit ca8e953bbfa6a2a1e9471bff96f9513af2b37563
Author: Joanmarie Diggs <jdiggs igalia com>
Date:   Wed Mar 21 13:54:26 2018 -0400

    Grab focus on image links during caret navigation

 src/orca/scripts/web/script_utilities.py |    4 ++++
 1 files changed, 4 insertions(+), 0 deletions(-)
---
diff --git a/src/orca/scripts/web/script_utilities.py b/src/orca/scripts/web/script_utilities.py
index 79b5ee5..1a61a88 100644
--- a/src/orca/scripts/web/script_utilities.py
+++ b/src/orca/scripts/web/script_utilities.py
@@ -336,6 +336,10 @@ class Utilities(script_utilities.Utilities):
         if role == pyatspi.ROLE_ENTRY:
             return False
 
+        if role == pyatspi.ROLE_IMAGE:
+            isLink = lambda x: x and x.getRole() == pyatspi.ROLE_LINK
+            return pyatspi.utils.findAncestor(obj, isLink) is not None
+
         return state.contains(pyatspi.STATE_FOCUSABLE)
 
     def grabFocus(self, obj):