[orca] Ignore page loads for non-active documents

[Joanmarie Diggs <joanied src gnome org>]

commit 2f76cf9d8d37a34ad6c1d467188c63687be6e49c
Author: Joanmarie Diggs <jdiggs igalia com>
Date:   Tue Jan 8 15:03:40 2019 -0500

    Ignore page loads for non-active documents

 src/orca/scripts/web/script.py           |  9 +++++++--
 src/orca/scripts/web/script_utilities.py | 16 +++++++++++-----
 2 files changed, 18 insertions(+), 7 deletions(-)
---
diff --git a/src/orca/scripts/web/script.py b/src/orca/scripts/web/script.py
index 5c4536389..96a2d6b5c 100644
--- a/src/orca/scripts/web/script.py
+++ b/src/orca/scripts/web/script.py
@@ -1273,8 +1273,6 @@ class Script(default.Script):
             debug.println(debug.LEVEL_INFO, msg, True)
             return True
 
-        self._loadingDocumentContent = event.detail1
-
         obj, offset = self.utilities.getCaretContext()
         if not obj or self.utilities.isZombie(obj):
             self.utilities.clearCaretContext()
@@ -1289,6 +1287,13 @@ class Script(default.Script):
             else:
                 self.presentMessage(messages.PAGE_LOADING_END)
 
+        activeDocument = self.utilities.activeDocument()
+        if activeDocument and activeDocument != event.source:
+            msg = "WEB: Ignoring: Event source is not active document"
+            debug.println(debug.LEVEL_INFO, msg, True)
+            return True
+
+        self._loadingDocumentContent = event.detail1
         if event.detail1:
             return True
 
diff --git a/src/orca/scripts/web/script_utilities.py b/src/orca/scripts/web/script_utilities.py
index e3ec1d387..6b0d89cb0 100644
--- a/src/orca/scripts/web/script_utilities.py
+++ b/src/orca/scripts/web/script_utilities.py
@@ -274,13 +274,19 @@ class Utilities(script_utilities.Utilities):
         orca_state.activeWindow = window
         return True
 
+    def activeDocument(self):
+        isShowing = lambda x: x and x.getState().contains(pyatspi.STATE_SHOWING)
+        documents = self._getDocumentsEmbeddedBy(orca_state.activeWindow)
+        documents = list(filter(isShowing, documents))
+        if len(documents) == 1:
+            return documents[0]
+        return None
+
     def documentFrame(self, obj=None):
         if self.sanityCheckActiveWindow():
-            isShowing = lambda x: x and x.getState().contains(pyatspi.STATE_SHOWING)
-            documents = self._getDocumentsEmbeddedBy(orca_state.activeWindow)
-            documents = list(filter(isShowing, documents))
-            if len(documents) == 1:
-                return documents[0]
+            document = self.activeDocument()
+            if document:
+                return document
 
         return self.getDocumentForObject(obj or orca_state.locusOfFocus)