[orca] Add means to test if the last input event came from the current application

[Joanmarie Diggs <joanied src gnome org>]

commit 79351eb3c57dbcfe642e52e7f5a6726c3a0cc5ff
Author: Joanmarie Diggs <jdiggs igalia com>
Date:   Wed Oct 17 19:51:38 2018 +0200

    Add means to test if the last input event came from the current application

 src/orca/input_event.py      | 5 +++++
 src/orca/script_utilities.py | 7 +++++++
 2 files changed, 12 insertions(+)
---
diff --git a/src/orca/input_event.py b/src/orca/input_event.py
index b653611bd..396b76363 100644
--- a/src/orca/input_event.py
+++ b/src/orca/input_event.py
@@ -446,6 +446,11 @@ class KeyboardEvent(InputEvent):
 
         return self.event_string in ["space", " "]
 
+    def isFromApplication(self, app):
+        """Return True if this is associated with the specified app."""
+
+        return self._app == app
+
     def isCharacterEchoable(self):
         """Returns True if the script will echo this event as part of
         character echo. We do this to not double-echo a given printable
diff --git a/src/orca/script_utilities.py b/src/orca/script_utilities.py
index 8ca544e79..511eecbd1 100644
--- a/src/orca/script_utilities.py
+++ b/src/orca/script_utilities.py
@@ -4542,6 +4542,13 @@ class Utilities:
         text = "%s\n%s" % (text, newText)
         clipboard.set_text(text, -1)
 
+    def lastInputEventCameFromThisApp(self):
+        if not isinstance(orca_state.lastInputEvent, input_event.KeyboardEvent):
+            return False
+
+        event = orca_state.lastNonModifierKeyEvent
+        return event and event.isFromApplication(self._script.app)
+
     def lastInputEventWasPrintableKey(self):
         event = orca_state.lastInputEvent
         if not isinstance(event, input_event.KeyboardEvent):