gui.py

   1 from gpg import BadSignature
   2 from policy import Policy
   3 import download
   4 import gtk, os
   5 import sys
   6
   7 # Singleton Policy
   8 policy = None
   9
  10 class GUIPolicy(Policy):
  11         window = None
  12         n_downloads = 0
  13         pulse = None
  14
  15         def __init__(self, interface, prog, prog_args):
  16                 Policy.__init__(self, interface)
  17                 global policy
  18                 assert policy is None
  19                 policy = self
  20
  21                 import mainwindow
  22                 self.window = mainwindow.MainWindow(prog, prog_args)
  23                 self.window.browser.set_root(policy.get_interface(policy.root))
  24
  25         def monitor_download(self, dl):
  26                 error_stream = dl.start()
  27                 def error_ready(src, cond):
  28                         print src, "ready"
  29                         got = os.read(src.fileno(), 100)
  30                         if not got:
  31                                 error_stream.close()
  32                                 self.n_downloads -= 1
  33                                 if self.n_downloads == 0:
  34                                         self.window.progress.hide()
  35                                         gtk.timeout_remove(self.pulse)
  36                                         self.pulse = None
  37                                 data = dl.error_stream_closed()
  38                                 try:
  39                                         self.check_signed_data(dl, data)
  40                                 except BadSignature, ex:
  41                                         print >>sys.stderr, ex
  42                                 return False
  43                         print "Errors: '%s'" % got
  44                         print "(from %s)" % dl.url
  45                         return True
  46
  47                 gtk.input_add(error_stream, gtk.gdk.INPUT_READ, error_ready)
  48
  49                 self.n_downloads += 1
  50                 if self.pulse is None:
  51                         progress = self.window.progress
  52                         self.pulse = gtk.timeout_add(50, lambda: progress.pulse() or True)
  53                         progress.show()
  54
  55         def main(self):
  56                 self.window.show()
  57                 gtk.main()