Simplest possible modification of ui. Working.

Will now propagate changes in every files.

papers/papers_cmd.py

@@ -5,7 +5,7 @@ import sys
 import argparse
 import collections
 
-from .ui import UI
+from . import uis
 from . import configs
 from . import commands
 from . import plugins
@@ -53,7 +53,8 @@ def execute(raw_args = sys.argv):
     config.load()
     config.as_global()
 
-    ui = UI(config)
+    uis.init_ui(config)
+    ui = uis.get_ui()
 
     _update_check(config, ui)
 

papers/uis.py

@@ -3,9 +3,26 @@ from __future__ import print_function
 import sys
 
 from .beets_ui import _encoding, input_
-
 from . import color
 
+# package-shared ui that can be accessed using :
+# from uis import get_ui
+# ui = get_ui()
+# you must instanciate ui with a Config instance using init_ui(config)
+_ui = None
+
+
+def get_ui():
+    if _ui is None:
+        raise ValueError('ui not instanciated yet')
+    return _ui
+
+
+def init_ui(config):
+    global _ui
+    _ui = UI(config)
+
+
 class UI:
     """UI class. Stores configuration parameters and system information.
     """