[orca] Attempt to identify and navigate around non-navigable embedded documents

[Joanmarie Diggs <joanied src gnome org>]

commit 07cd264aa9edd250e8b8384bab8a4b32fb282c7f
Author: Joanmarie Diggs <jdiggs igalia com>
Date:   Fri Oct 27 15:00:56 2017 -0400

    Attempt to identify and navigate around non-navigable embedded documents

 src/orca/scripts/web/script_utilities.py |   24 ++++++++++++++++++++++++
 1 files changed, 24 insertions(+), 0 deletions(-)
---
diff --git a/src/orca/scripts/web/script_utilities.py b/src/orca/scripts/web/script_utilities.py
index 87cb2d9..8b1fc86 100644
--- a/src/orca/scripts/web/script_utilities.py
+++ b/src/orca/scripts/web/script_utilities.py
@@ -83,6 +83,7 @@ class Utilities(script_utilities.Utilities):
         self._isNonEntryTextWidget = {}
         self._isImageMap = {}
         self._isUselessImage = {}
+        self._isNonNavigableEmbeddedDocument = {}
         self._isParentOfNullChild = {}
         self._inferredLabels = {}
         self._actualLabels = {}
@@ -147,6 +148,7 @@ class Utilities(script_utilities.Utilities):
         self._isNonEntryTextWidget = {}
         self._isImageMap = {}
         self._isUselessImage = {}
+        self._isNonNavigableEmbeddedDocument = {}
         self._isParentOfNullChild = {}
         self._inferredLabels = {}
         self._actualLabels = {}
@@ -852,6 +854,8 @@ class Utilities(script_utilities.Utilities):
                 rv = None
             if rv and (self.isHidden(obj) or self.isOffScreenLabel(obj)):
                 rv = None
+            if rv and self.isNonNavigableEmbeddedDocument(obj):
+                rv = None
             if rv and role == pyatspi.ROLE_LINK \
                and (self.hasExplicitName(obj) or self.hasUselessCanvasDescendant(obj)):
                 rv = None
@@ -2751,6 +2755,23 @@ class Utilities(script_utilities.Utilities):
         self._isImageMap[hash(obj)] = rv
         return rv
 
+    def isNonNavigableEmbeddedDocument(self, obj):
+        rv = self._isNonNavigableEmbeddedDocument.get(hash(obj))
+        if rv is not None:
+            return rv
+
+        rv = False
+        if self.isDocument(obj) and self.getDocumentForObject(obj):
+            try:
+                name = obj.name
+            except:
+                rv = True
+            else:
+                rv = "doubleclick" in name
+
+        self._isNonNavigableEmbeddedDocument[hash(obj)] = rv
+        return rv
+
     def isUselessImage(self, obj):
         if not (obj and self.inDocumentContent(obj)):
             return False
@@ -3277,6 +3298,9 @@ class Utilities(script_utilities.Utilities):
         if self.isHidden(obj) or self.isOffScreenLabel(obj):
             return True
 
+        if self.isNonNavigableEmbeddedDocument(obj):
+            return True
+
         role = obj.getRole()
         if role == pyatspi.ROLE_LINK \
            and (self.hasExplicitName(obj) or self.hasUselessCanvasDescendant(obj)):