Allow selecting multisplines from Spline UI graph

Signed-off-by: Ravago Jones <ravagojones@gmail.com>
Change-Id: I4a5eae2292a196194499d451975342047cea4a42
diff --git a/frc971/control_loops/python/path_edit.py b/frc971/control_loops/python/path_edit.py
index b5e8c1b..5752268 100755
--- a/frc971/control_loops/python/path_edit.py
+++ b/frc971/control_loops/python/path_edit.py
@@ -422,6 +422,15 @@
                     prev_multispline.getSplines()[-1])
             self.queue_draw()
 
+    def on_graph_clicked(self):
+        if self.graph.cursor is not None:
+            cursor = self.graph.find_cursor()
+            if cursor is None:
+                return
+            multispline_index, x = cursor
+
+            self.active_multispline_index = multispline_index
+
     def do_button_release_event(self, event):
         self.drag_start = None