[orca] Don't include alerts from web browsers as unfocused alerts

[Joanmarie Diggs <joanied src gnome org>]

commit bfa78111576aa365a6c2aa62ffdeed74bcd4ae93
Author: Joanmarie Diggs <jdiggs igalia com>
Date:   Wed Nov 13 13:42:29 2019 -0500

    Don't include alerts from web browsers as unfocused alerts
    
    The alert role is used for things like Firefox door hangers. They are
    almost always unfocused. For this reason, Orca automatically announces
    alerts from web browsers even when they are not focused. Also including
    these containers in the list of unfocused dialogs is too chatty.

 src/orca/script_utilities.py             | 8 +++++++-
 src/orca/scripts/web/script_utilities.py | 3 +++
 2 files changed, 10 insertions(+), 1 deletion(-)
---
diff --git a/src/orca/script_utilities.py b/src/orca/script_utilities.py
index 2bdf0d9b2..9d39bb96b 100644
--- a/src/orca/script_utilities.py
+++ b/src/orca/script_utilities.py
@@ -2435,6 +2435,9 @@ class Utilities:
 
         return sorted(labels, key=functools.cmp_to_key(self.spatialComparison))
 
+    def _treatAlertsAsDialogs(self):
+        return True
+
     def unfocusedAlertAndDialogCount(self, obj):
         """If the current application has one or more alert or dialog
         windows and the currently focused window is not an alert or a dialog,
@@ -2447,7 +2450,10 @@ class Utilities:
         Returns the alert and dialog count.
         """
 
-        roles = [pyatspi.ROLE_ALERT, pyatspi.ROLE_DIALOG]
+        roles = [pyatspi.ROLE_DIALOG]
+        if self._treatAlertsAsDialogs():
+            roles.append(pyatspi.ROLE_ALERT)
+
         isDialog = lambda x: x and x.getRole() in roles or self.isFunctionalDialog(x)
         dialogs = [x for x in obj.getApplication() if isDialog(x)]
         dialogs.extend([x for x in self.topLevelObject(obj) if isDialog(x)])
diff --git a/src/orca/scripts/web/script_utilities.py b/src/orca/scripts/web/script_utilities.py
index 8417b83f6..b7e70eda6 100644
--- a/src/orca/scripts/web/script_utilities.py
+++ b/src/orca/scripts/web/script_utilities.py
@@ -2041,6 +2041,9 @@ class Utilities(script_utilities.Utilities):
 
         return string, start, end
 
+    def _treatAlertsAsDialogs(self):
+        return False
+
     def treatAsDiv(self, obj, offset=None):
         if not (obj and self.inDocumentContent(obj)):
             return False