map keypress to next content value

data_centre.py

@@ -287,6 +287,9 @@ def set_next_bank_number_from_playback_mode(playback_mode, current_bank_number):
         next_bank_number = current_bank_number
     update_json('next_bank_number.json',next_bank_number)
 
+def update_next_bank_number(new_value):
+    update_json(NEXT_BANK_JSON, new_value)
+
 ####<<<< generic methods for all tabs >>>>#####
 
 def read_json(file_name):

display_centre.py

@@ -18,11 +18,17 @@ canvas = Frame(tk, width=500, height=400)
 
 def key(event):
     print "pressed", repr(event.char)
+    if(event.char in ['0','1','2'] ):
+        print 'updating next bank'
+        data_centre.update_next_bank_number(event.char)
 
 canvas.bind("<Key>", key)
 
 canvas.pack()
 canvas.focus_set()
+
+video_driver = video_centre.video_driver(canvas)
+
 tk.mainloop()
 # try:
 # #    video_driver = video_centre.video_driver(canvas)

next_bank_number.json

@@ -1 +1 @@
-0
+"0"