diff --git a/application.py b/application.py
index 4b766a7..e94a469 100755
--- a/application.py
+++ b/application.py
@@ -239,6 +239,17 @@ class Application(object):
         curses.noecho()
         curses.nonl()
 
+    def setmode(self, name, cls, paths=[], basenames=[], extensions=[], detection=[]):
+        self.modes[name] = cls
+        for p in paths:
+            self.mode_paths[p] = name
+        for b in basenames:
+            self.mode_basenames[b] = name
+        for e in extensions:
+            self.mode_extensions[e] = name
+        for d in detection:
+            self.mode_detection[d] = name
+
     def globals(self):
         return globals()
     def locals(self):