TimeMachine.py

   1 import Views, Actions
   2 import subprocess, curses
   3
   4 class TimeMachine(Views.View):
   5
   6     def __init__(self, context, name, x, y, dx, dy, ports, dir, buffer):
   7         Views.View.__init__(self, context, name, x, y, dx, dy)
   8         nul = file("/dev/null","w")
   9         self._tm = subprocess.Popen(["timemachine", "-i", "-t", str(buffer)] + list(ports), cwd=dir,
  10                                     stdin=subprocess.PIPE, stdout=nul, stderr=nul)
  11         self._recording = False
  12
  13     def start(self):
  14         if not self._recording:
  15             self._tm.stdin.write("start\n")
  16             self._recording = True
  17             self._redraw()
  18
  19     def stop(self):
  20         if self._recording:
  21             self._tm.stdin.write("stop\n")
  22             self._recording = False
  23             self._redraw()
  24
  25     def toggle(self):
  26         if self._recording:
  27             self.stop()
  28         else:
  29             self.start()
  30
  31     def _redraw(self, refresh=True):
  32         self.win().addstr(1,2,"Status: ")
  33         if self._recording:
  34             self.win().addstr(1,10, "RECORDING", curses.A_BOLD)
  35         else:
  36             self.win().addstr(1,10, "Idle     ")
  37         if refresh:
  38             self.win().refresh()
  39
  40     def updateView(self, bindings):
  41         pass
  42
  43     def init(self):
  44         Views.View.init(self)
  45         self._redraw()
  46
  47 class ToggleRecord(Actions.Action):
  48
  49     def __init__(self, name, tm):
  50         Actions.Action.__init__(self, name)
  51         self._tm = tm
  52
  53     def __call__(self, binding):
  54         self._tm.toggle()
  55
  56
  57 def register(viewmanager, context, name, x, y, dx, dy, ports, dir, buffer):
  58     tm = TimeMachine(context, name, x, y, dx, dy, ports, dir, buffer)
  59     viewmanager.registerView(tm)
  60     return tm
  61