[orca] Re-commit "Be sure we have the active document in descendantAtPoint"

[Joanmarie Diggs <joanied src gnome org>]

commit 229572dd6d34e1bae0e3a857a3ddb2d909434110
Author: Joanmarie Diggs <jdiggs igalia com>
Date:   Thu Nov 21 08:49:48 2019 -0500

    Re-commit "Be sure we have the active document in descendantAtPoint"
    
    This change should still be valid even without the tree dive that was
    reverted.

 src/orca/scripts/web/script_utilities.py | 7 +++++++
 1 file changed, 7 insertions(+)
---
diff --git a/src/orca/scripts/web/script_utilities.py b/src/orca/scripts/web/script_utilities.py
index bce0d639e..ae0eadd10 100644
--- a/src/orca/scripts/web/script_utilities.py
+++ b/src/orca/scripts/web/script_utilities.py
@@ -4584,6 +4584,13 @@ class Utilities(script_utilities.Utilities):
         if not (root and self.inDocumentContent(root)):
             return super().descendantAtPoint(root, x, y, coordType)
 
+        if self.isDocument(root):
+            active = self.activeDocument()
+            if active and root != active:
+                msg = "WEB: %s is not active. Updating to %s." % (root, active)
+                debug.println(debug.LEVEL_INFO, msg, True)
+                root = active
+
         if self.containsPoint(root, x, y, coordType):
             return super().descendantAtPoint(root, x, y, coordType)