vcs.maemo.org Git - findit/blob - src/mvc/controllers/debsearch.py

   1 #!/usr/bin/env python
   2 # -*-coding: utf-8 -*-
   3 # vim: sw=4 ts=4 expandtab ai
   4 # pylint: disable-msg=C0301
   5
   6 from gtkmvc import Controller
   7 import gtk
   8
   9 import apt_pkg
  10 from heapq import nlargest
  11
  12 from views.debsearch import DebsearchView
  13
  14
  15 class DebsearchCtrl(Controller):
  16     """Controller of the Debian packages search plugin"""
  17
  18     def __init__(self, model):
  19         Controller.__init__(self, model)
  20
  21     def register_view(self, view):
  22         Controller.register_view(self, view)
  23
  24         # connects the signals:
  25         self.view['start_btn'].connect('released', self.start_btn_released_cb)
  26         self.view['stop_btn'].connect('clicked', self.on_stop_btn_clicked)
  27         self.view['qty_spin'].connect("value_changed", self.on_qty_spin_value_changed)
  28
  29         # sets initial values for the view
  30         self.view.set_quantity_value(self.model.quantity)
  31
  32     # -----------------------------------------------------
  33     #                  user callbacks
  34     # -----------------------------------------------------
  35
  36     def debgetter(self):
  37         apt_pkg.InitConfig()
  38         apt_pkg.InitSystem()
  39         cache = apt_pkg.GetCache()
  40         for pkg in cache.Packages:
  41             # pkg is from a list of packages, sorted by name.
  42             self.view['statusbar'].push(self.view['context_id'], pkg.Name)  ### FIXME
  43             if pkg.CurrentState == apt_pkg.CurStateInstalled:
  44                 pkgsize = [version.InstalledSize for version in pkg.VersionList][0]
  45                 yield pkgsize, pkg.Name
  46
  47     def size_convert(self, size):
  48         """Return string with package size in b or Kb or Mb or Gb or Tb."""
  49
  50         for i, unit in enumerate(['%d b', '%.1f Kb', '%.2f Mb', '%.3f Gb', '%.4f Tb']):
  51             if size < 1024**(i+1):
  52                 return unit % (size/1024.**i)
  53         return '>1024 Tb'
  54
  55     # -----------------------------------------------------
  56     #                    gtk signals
  57     # -----------------------------------------------------
  58
  59     def on_qty_spin_value_changed(self, sb):
  60         """Get packages qty from SpinButton."""
  61         self.model.quantity = sb.get_value_as_int()
  62
  63     def start_btn_released_cb(self, btn):
  64         """Start package search. Button "Go" activate callback."""
  65
  66         self.view['start_btn'].set_sensitive(False)
  67         self.view['stop_btn'].set_sensitive(True)
  68
  69         # Clear list
  70         self.view['liststore'].clear()
  71
  72         # Align columns
  73         self.view['treeview'].columns_autosize()
  74
  75         # Get biggest packages
  76         for psize, packg in nlargest(self.model.quantity, self.debgetter()):
  77             # Fill treemodel: package name, size as string, byte size
  78             self.view['liststore'].append([packg, self.size_convert(psize), psize])
  79
  80         self.view['start_btn'].set_sensitive(True)
  81         self.view['stop_btn'].set_sensitive(False)
  82
  83     def on_stop_btn_clicked(self, btn):
  84         """Stop search. "Stop" button clicked callback."""
  85         print 'Stop clicked'
  86         self.model.stopit = True
  87
  88     # -----------------------------------------------------
  89     #                observable properties
  90     # -----------------------------------------------------
  91
  92     def property_quantity_value_change(self, model, old, new):
  93         pass
  94         #self.view.set_quantity_value(new)
  95
  96     def property_stopit_value_change(self, model, old, new):
  97         self.view.set_stopit_value(new)