src/gpodder/gtkui/ubuntu.py

   1 # -*- coding: utf-8 -*-
   2 #
   3 # gPodder - A media aggregator and podcast client
   4 # Copyright (c) 2005-2012 Thomas Perl and the gPodder Team
   5 #
   6 # gPodder is free software; you can redistribute it and/or modify
   7 # it under the terms of the GNU General Public License as published by
   8 # the Free Software Foundation; either version 3 of the License, or
   9 # (at your option) any later version.
  10 #
  11 # gPodder is distributed in the hope that it will be useful,
  12 # but WITHOUT ANY WARRANTY; without even the implied warranty of
  13 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14 # GNU General Public License for more details.
  15 #
  16 # You should have received a copy of the GNU General Public License
  17 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
  18 #
  19
  20 # Ubuntu Unity Launcher Integration
  21 # Thomas Perl <thp@gpodder.org>; 2012-02-06
  22
  23 # FIXME: Due to the fact that we do not yet use the GI-style bindings, we will
  24 # have to run this module in its own interpreter and send commands to it using
  25 # the subprocess module. Once we use GI-style bindings, we can get rid of all
  26 # this and still expose the same "interface' (LauncherEntry and its methods)
  27 # to our callers.
  28
  29 import subprocess
  30 import logging
  31
  32 if __name__ != '__main__':
  33     logger = logging.getLogger(__name__)
  34
  35     class LauncherEntry:
  36         FILENAME = 'gpodder.desktop'
  37
  38         def __init__(self):
  39             self.process = subprocess.Popen(['python', __file__],
  40                     stdin=subprocess.PIPE)
  41
  42         def set_count(self, count):
  43             try:
  44                 self.process.stdin.write('count %d\n' % count)
  45                 self.process.stdin.flush()
  46             except Exception, e:
  47                 logger.debug('Ubuntu count update failed.', exc_info=True)
  48
  49         def set_progress(self, progress):
  50             try:
  51                 self.process.stdin.write('progress %f\n' % progress)
  52                 self.process.stdin.flush()
  53             except Exception, e:
  54                 logger.debug('Ubuntu progress update failed.', exc_info=True)
  55
  56 if __name__ == '__main__':
  57     from gi.repository import Unity, GObject
  58     import threading
  59     import sys
  60
  61     class InputReader:
  62         def __init__(self, fileobj, launcher):
  63             self.fileobj = fileobj
  64             self.launcher = launcher
  65
  66         def read(self):
  67             while True:
  68                 line = self.fileobj.readline()
  69                 if not line:
  70                     break
  71                 try:
  72                     command, value = line.strip().split()
  73                     if command == 'count':
  74                         GObject.idle_add(launcher_entry.set_count, int(value))
  75                     elif command == 'progress':
  76                         GObject.idle_add(launcher_entry.set_progress, float(value))
  77                 except:
  78                     pass
  79
  80     class LauncherEntry:
  81         FILENAME = 'gpodder.desktop'
  82
  83         def __init__(self):
  84             self.launcher = Unity.LauncherEntry.get_for_desktop_id(
  85                     self.FILENAME)
  86
  87         def set_count(self, count):
  88             self.launcher.set_property('count', count)
  89             self.launcher.set_property('count_visible', count > 0)
  90
  91         def set_progress(self, progress):
  92             self.launcher.set_property('progress', progress)
  93             self.launcher.set_property('progress_visible', 0. <= progress < 1.)
  94
  95     GObject.threads_init()
  96     loop = GObject.MainLoop()
  97     threading.Thread(target=loop.run).start()
  98
  99     launcher_entry = LauncherEntry()
 100     reader = InputReader(sys.stdin, launcher_entry)
 101     reader.read()
 102
 103     loop.quit()
 104