[orca] Check that line has changed before re-presenting it in content-editable objects

[Joanmarie Diggs <joanied src gnome org>]

commit 7c49710224c15befe3db6329a0a415e29bdb5df0
Author: Joanmarie Diggs <jdiggs igalia com>
Date:   Sat Dec 2 15:00:13 2017 -0500

    Check that line has changed before re-presenting it in content-editable objects

 src/orca/scripts/web/script.py |    5 ++++-
 1 files changed, 4 insertions(+), 1 deletions(-)
---
diff --git a/src/orca/scripts/web/script.py b/src/orca/scripts/web/script.py
index 6e495df..25a77fe 100644
--- a/src/orca/scripts/web/script.py
+++ b/src/orca/scripts/web/script.py
@@ -1137,7 +1137,10 @@ class Script(default.Script):
 
         self.utilities.setCaretContext(newFocus, caretOffset)
         self.updateBraille(newFocus)
-        if self.utilities.isContentEditableWithEmbeddedObjects(newFocus):
+
+        oldContext = self.utilities.lastContext(oldFocus)
+        if self.utilities.isContentEditableWithEmbeddedObjects(newFocus) \
+           and not self.utilities.contextsAreOnSameLine(oldContext, (newFocus, caretOffset)):
             msg = "WEB: New focus %s content editable. Generating line contents." % newFocus
             debug.println(debug.LEVEL_INFO, msg, True)
             contents = self.utilities.getLineContentsAtOffset(newFocus, caretOffset)