Move VendServer code up a directory wholesale and rename

[uccvend-vendserver.git] / VendServer / MessageKeeper.py

diff --git a/VendServer/MessageKeeper.py b/VendServer/MessageKeeper.py
new file mode 100755 (executable)
index 0000000..60d2b9e
--- /dev/null
+++ b/VendServer/MessageKeeper.py
@@ -0,0 +1,53 @@
+#!/usr/bin/python
+# vim:ts=4
+
+import sys, os, string, re, pwd, signal
+from HorizScroll import HorizScroll
+from random import random, seed
+from time import time, sleep
+
+class MessageKeeper:
+       def __init__(self, vendie):
+               # Each element of scrolling_message should be a 3-tuple of
+               # ('message', True/False if it is to be repeated, time to display)
+               self.scrolling_message = []
+               self.v = vendie
+               self.next_update = None
+
+       def set_message(self, string):
+               self.scrolling_message = [(string, False, None)]
+               self.update_display(True)
+
+       def set_messages(self, strings):
+               self.scrolling_message = strings
+               self.update_display(True)
+
+       def update_display(self, forced = False, padding = 0):
+               if not forced and self.next_update != None and time() < self.next_update:
+                       return
+               if len(self.scrolling_message) > 0:
+                       if len(self.scrolling_message[0][0]) > 10:
+                               (m, r, t) = self.scrolling_message[0]
+                               a = []
+                               exp = HorizScroll(m).expand(padding, wraparound = r)
+                               if t == None:
+                                       t = 0.1
+                               else:
+                                       t = t / len(exp)
+                               for x in exp:
+                                       a.append((x, r, t))
+                               del self.scrolling_message[0]
+                               self.scrolling_message = a + self.scrolling_message
+                       newmsg = self.scrolling_message[0]
+                       if newmsg[2] != None:
+                               self.next_update = time() + newmsg[2]
+                       else:
+                               self.next_update = None
+                       self.v.display(self.scrolling_message[0][0])
+                       if self.scrolling_message[0][1]:
+                               self.scrolling_message.append(self.scrolling_message[0])
+                       del self.scrolling_message[0]
+
+       def done(self):
+               return len(self.scrolling_message) == 0
+