mainwindow.py

   1 import gtk
   2 from iface_browser import InterfaceBrowser
   3 import help_box
   4 from gui import policy
   5 from dialog import Dialog
   6 from model import stable, testing, network_levels, SafeException
   7
   8 class MainWindow(Dialog):
   9         progress = None
  10         browser = None
  11
  12         def __init__(self, prog, prog_args):
  13                 Dialog.__init__(self)
  14                 self.set_title('Dependency Injector')
  15                 self.set_default_size(400, 300)
  16
  17                 tips = gtk.Tooltips()
  18
  19                 # Network use
  20                 hbox = gtk.HBox(False, 2)
  21                 self.vbox.pack_start(hbox, False, True, 0)
  22                 hbox.set_border_width(4)
  23
  24                 network = gtk.combo_box_new_text()
  25                 for level in network_levels:
  26                         network.append_text(level.capitalize())
  27                 network.set_active(list(network_levels).index(policy.network_use))
  28                 hbox.pack_start(gtk.Label('Network use:'), False, True, 0)
  29                 hbox.pack_start(network, True, True, 2)
  30                 def set_network_use(combo):
  31                         policy.network_use = network_levels[network.get_active()]
  32                         policy.save_config()
  33                         policy.recalculate()
  34                 network.connect('changed', set_network_use)
  35
  36                 button = gtk.Button('Refresh all')
  37                 def refresh_all(b):
  38                         for x in policy.walk_interfaces():
  39                                 policy.begin_iface_download(x, True)
  40                 button.connect('clicked', refresh_all)
  41                 hbox.pack_start(button, False, True, 2)
  42
  43                 hbox.show_all()
  44
  45                 # Tree view
  46                 self.browser = InterfaceBrowser()
  47                 self.vbox.pack_start(self.browser, True, True, 0)
  48                 self.browser.show()
  49
  50                 # Select versions
  51                 hbox = gtk.HBox(False, 2)
  52                 self.vbox.pack_start(hbox, False, True, 0)
  53                 hbox.set_border_width(4)
  54
  55                 button = gtk.Button()
  56                 self.browser.edit_properties.connect_proxy(button)
  57                 hbox.pack_start(button, False, True, 0)
  58
  59                 stable_toggle = gtk.CheckButton('Help test new versions')
  60                 hbox.pack_start(stable_toggle, False, True, 0)
  61                 tips.set_tip(stable_toggle,
  62                         "Try out new versions as soon as they are available, instead of "
  63                         "waiting for them to be marked as 'stable'. "
  64                         "This sets the default policy. Click on 'Interface Properties...' "
  65                         "to set the policy for an individual interface.")
  66                 stable_toggle.set_active(policy.help_with_testing)
  67                 def toggle_stability(toggle):
  68                         policy.help_with_testing = toggle.get_active()
  69                         policy.save_config()
  70                         policy.recalculate()
  71                 stable_toggle.connect('toggled', toggle_stability)
  72
  73                 hbox.show_all()
  74
  75                 # Progress bar
  76                 self.progress = gtk.ProgressBar()
  77                 self.vbox.pack_start(self.progress, False, True, 0)
  78
  79                 # Responses
  80
  81                 self.add_button(gtk.STOCK_HELP, gtk.RESPONSE_HELP)
  82                 self.add_button(gtk.STOCK_CANCEL, gtk.RESPONSE_CANCEL)
  83                 self.add_button(gtk.STOCK_EXECUTE, gtk.RESPONSE_OK)
  84                 self.set_default_response(gtk.RESPONSE_OK)
  85
  86                 def response(dialog, resp):
  87                         if resp == gtk.RESPONSE_CANCEL:
  88                                 self.destroy()
  89                         elif resp == gtk.RESPONSE_OK:
  90                                 import run
  91                                 try:
  92                                         run.execute(policy, prog, prog_args)
  93                                         self.destroy()
  94                                 except SafeException, ex:
  95                                         box = gtk.MessageDialog(self, gtk.DIALOG_MODAL,
  96                                                         gtk.MESSAGE_ERROR, gtk.BUTTONS_OK,
  97                                                         str(ex))
  98                                         box.run()
  99                                         box.destroy()
 100                         elif resp == gtk.RESPONSE_HELP:
 101                                 gui_help.display()
 102                 self.connect('response', response)
 103
 104 gui_help = help_box.HelpBox("Injector Help",
 105 ('Overview', """
 106 A program is made up of many different components, typically written by different \
 107 groups of people. Each component is available in multiple versions. The injector is \
 108 used when starting a program. Its job is to decide which implementation of each required \
 109 component to use.
 110
 111 An interface describes what a component does. The injector starts with \
 112 the interface for the program you want to run (like 'The Gimp') and chooses an \
 113 implementation (like 'The Gimp 2.2.0'). However, this implementation \
 114 will in turn depend on other interfaces, such as 'GTK' (which draws the menus \
 115 and buttons). Thus, the injector must choose implementations of \
 116 each dependancy (each of which may require further interfaces, and so on)."""),
 117
 118 ('List of interfaces', """
 119 The main window displays all these interfaces, and the version of each chosen \
 120 implementation. The top-most one represents the program you tried to run, and each direct \
 121 child is a dependancy.
 122
 123 If you are happy with the choices shown, click on the Execute button to run the \
 124 program."""),
 125
 126 ('Choosing different versions', """
 127 There are three ways to control which implementations are chosen. You can adjust the \
 128 network policy and the overall stability policy, which affect all interfaces, or you \
 129 can edit the policy of individual interfaces.
 130
 131 The 'Network use' option controls how the injector uses the network. If off-line, \
 132 the network is not used at all. If 'Minimal' is selected then the injector will use \
 133 the network if needed, but only if it has no choice. It will run an out-of-date \
 134 version rather than download a newer one. If 'Full' is selected, the injector won't \
 135 worry about how much it downloads, but will always pick the version it thinks is best.
 136
 137 The overall stability policy can either be to prefer stable versions, or to help test \
 138 new versions. Choose whichever suits you. Since different programmers have different \
 139 ideas of what 'stable' means, you may wish to override this on a per-interface basis \
 140 (see below).
 141
 142 To set the policy for an interface individually, select it and click on 'Interface \
 143 Properties'. See that dialog's help text for more information."""))