Refresh conversation view

securedrop_client/logic.py

@@ -138,6 +138,13 @@ def setup(self):
         self.sync_update = QTimer()
         self.sync_update.timeout.connect(self.sync_api)
         self.sync_update.start(1000 * 60 * 5)  # every 5 minutes.
+        # Use a QTimer to update the current conversation view such
+        # that as downloads/decryption occur, the messages and replies
+        # populate the view.
+        self.conv_view_update = QTimer()
+        self.conv_view_update.timeout.connect(
+            self.update_conversation_view)
+        self.conv_view_update.start(1000 * 60 * 0.10)  # every 6 seconds
 
         event.listen(models.Submission, 'load', self.on_object_loaded)
         event.listen(models.Submission, 'init', self.on_object_instantiated)
@@ -402,6 +409,16 @@ def update_sources(self):
         self.gui.show_sources(sources)
         self.update_sync()
 
+    def update_conversation_view(self):
+        """
+        Updates the conversation view to reflect progress
+        of the download and decryption of messages and replies.
+        """
+        # Redraw the conversation view if we have clicked on a source.
+        if self.gui.current_source:
+            self.session.refresh(self.gui.current_source)
+            self.gui.show_conversation_for(self.gui.current_source)
+
     def on_update_star_complete(self, result):
         """
         After we star or unstar a source, we should sync the API

tests/test_logic.py

@@ -535,6 +535,34 @@ def test_Client_update_sources(safe_tmpdir):
         mock_gui.show_sources.assert_called_once_with([1, 2, 3])
 
 
+def test_Client_update_conversation_view_current_source(safe_tmpdir):
+    """
+    Ensure the UI displays the latest version of the messages/replies that
+    have been downloaded/decrypted in the current conversation view.
+    """
+    mock_gui = mock.MagicMock()
+    mock_gui.current_source = 'teehee'
+    mock_gui.show_conversation_for = mock.MagicMock()
+    mock_session = mock.MagicMock()
+    cl = Client('http://localhost', mock_gui, mock_session, str(safe_tmpdir))
+    cl.update_conversation_view()
+    mock_gui.show_conversation_for.assert_called_once_with(
+        mock_gui.current_source)
+
+
+def test_Client_update_conversation_view_no_current_source(safe_tmpdir):
+    """
+    Ensure that if there is no current source (i.e. the user has not clicked
+    a source in the sidebar), the UI will not redraw the conversation view.
+    """
+    mock_gui = mock.MagicMock()
+    mock_gui.current_source = None
+    mock_session = mock.MagicMock()
+    cl = Client('http://localhost', mock_gui, mock_session, str(safe_tmpdir))
+    cl.update_conversation_view()
+    mock_gui.show_conversation_for.assert_not_called()
+
+
 def test_Client_unstars_a_source_if_starred(safe_tmpdir):
     """
     Ensure that the client unstars a source if it is starred.