zeroinstall/0launch-gui/mainwindow.py

   1 # Copyright (C) 2009, Thomas Leonard
   2 # See the README file for details, or visit http://0install.net.
   3
   4 import gtk
   5 import sys
   6 from logging import info
   7
   8 from zeroinstall import SafeException
   9 from zeroinstall.support import tasks, pretty_size
  10 from zeroinstall.injector import download, iface_cache
  11 from iface_browser import InterfaceBrowser
  12 import dialog
  13 from zeroinstall.gtkui import gtkutils
  14 from zeroinstall.gtkui import help_box
  15
  16 SHOW_PREFERENCES = 0
  17
  18 class MainWindow:
  19         progress = None
  20         progress_area = None
  21         browser = None
  22         window = None
  23         cancel_download_and_run = None
  24         policy = None
  25         comment = None
  26         systray_icon = None
  27         systray_icon_blocker = None
  28
  29         def __init__(self, policy, widgets, download_only):
  30                 self.policy = policy
  31
  32                 policy.watchers.append(lambda: self.window.set_response_sensitive(gtk.RESPONSE_OK, policy.solver.ready))
  33
  34                 self.window = widgets.get_widget('main')
  35                 self.window.set_default_size(gtk.gdk.screen_width() * 2 / 5, 300)
  36
  37                 self.progress = widgets.get_widget('progress')
  38                 self.progress_area = widgets.get_widget('progress_area')
  39                 self.comment = widgets.get_widget('comment')
  40
  41                 widgets.get_widget('stop').connect('clicked', lambda b: policy.handler.abort_all_downloads())
  42
  43                 self.refresh_button = widgets.get_widget('refresh')
  44
  45                 # Tree view
  46                 self.browser = InterfaceBrowser(policy, widgets)
  47
  48                 prefs = widgets.get_widget('preferences')
  49                 self.window.action_area.set_child_secondary(prefs, True)
  50
  51                 # Glade won't let me add this to the template!
  52                 if download_only:
  53                         run_button = dialog.MixedButton(_("_Download"), gtk.STOCK_EXECUTE, button = gtk.ToggleButton())
  54                 else:
  55                         run_button = dialog.MixedButton(_("_Run"), gtk.STOCK_EXECUTE, button = gtk.ToggleButton())
  56                 self.window.add_action_widget(run_button, gtk.RESPONSE_OK)
  57                 run_button.show_all()
  58                 run_button.set_flags(gtk.CAN_DEFAULT)
  59                 self.run_button = run_button
  60
  61                 self.window.set_default_response(gtk.RESPONSE_OK)
  62                 self.window.default_widget.grab_focus()
  63
  64                 def response(dialog, resp):
  65                         if resp in (gtk.RESPONSE_CANCEL, gtk.RESPONSE_DELETE_EVENT):
  66                                 self.window.destroy()
  67                                 sys.exit(1)
  68                         elif resp == gtk.RESPONSE_OK:
  69                                 if self.cancel_download_and_run:
  70                                         self.cancel_download_and_run.trigger()
  71                                 if run_button.get_active():
  72                                         self.cancel_download_and_run = tasks.Blocker("cancel downloads")
  73                                         self.download_and_run(run_button, self.cancel_download_and_run)
  74                         elif resp == gtk.RESPONSE_HELP:
  75                                 gui_help.display()
  76                         elif resp == SHOW_PREFERENCES:
  77                                 import preferences
  78                                 preferences.show_preferences(policy)
  79                 self.window.connect('response', response)
  80                 self.window.realize()   # Make busy pointer work, even with --systray
  81
  82         def destroy(self):
  83                 self.window.destroy()
  84
  85         def show(self):
  86                 self.window.show()
  87
  88         def set_response_sensitive(self, response, sensitive):
  89                 self.window.set_response_sensitive(response, sensitive)
  90
  91         @tasks.async
  92         def download_and_run(self, run_button, cancelled):
  93                 try:
  94                         downloaded = self.policy.download_uncached_implementations()
  95
  96                         if downloaded:
  97                                 # We need to wait until everything is downloaded...
  98                                 blockers = [downloaded, cancelled]
  99                                 yield blockers
 100                                 tasks.check(blockers)
 101
 102                                 if cancelled.happened:
 103                                         return
 104
 105                         if self.policy.get_uncached_implementations():
 106                                 dialog.alert(self.window, _('Not all downloads succeeded; cannot run program.'))
 107                         else:
 108                                 from zeroinstall.injector import selections
 109                                 sels = selections.Selections(self.policy)
 110                                 doc = sels.toDOM()
 111                                 reply = doc.toxml('utf-8')
 112                                 sys.stdout.write(('Length:%8x\n' % len(reply)) + reply)
 113                                 self.window.destroy()
 114                                 sys.exit(0)                     # Success
 115                 except SystemExit:
 116                         raise
 117                 except Exception, ex:
 118                         run_button.set_active(False)
 119                         self.report_exception(ex)
 120
 121         def update_download_status(self):
 122                 """Called at regular intervals while there are downloads in progress,
 123                 and once at the end. Update the display."""
 124                 monitored_downloads = self.policy.handler.monitored_downloads
 125
 126                 self.browser.update_download_status()
 127
 128                 if not monitored_downloads:
 129                         self.progress_area.hide()
 130                         self.window.window.set_cursor(None)
 131                         return
 132
 133                 if not self.progress_area.get_property('visible'):
 134                         self.progress_area.show()
 135                         self.window.window.set_cursor(gtkutils.get_busy_pointer())
 136
 137                 any_known = False
 138                 done = total = self.policy.handler.total_bytes_downloaded       # Completed downloads
 139                 n_downloads = self.policy.handler.n_completed_downloads
 140                 # Now add downloads in progress...
 141                 for x in monitored_downloads.values():
 142                         if x.status != download.download_fetching: continue
 143                         n_downloads += 1
 144                         if x.expected_size:
 145                                 any_known = True
 146                         so_far = x.get_bytes_downloaded_so_far()
 147                         total += x.expected_size or max(4096, so_far)   # Guess about 4K for feeds/icons
 148                         done += so_far
 149
 150                 progress_text = '%s / %s' % (pretty_size(done), pretty_size(total))
 151                 if n_downloads == 1:
 152                         self.progress.set_text(_('Downloading one file (%s)') % progress_text)
 153                 else:
 154                         self.progress.set_text(_('Downloading %(number)d files (%(progress)s)') % {'number': n_downloads, 'progress': progress_text})
 155
 156                 if total == 0 or (n_downloads < 2 and not any_known):
 157                         self.progress.pulse()
 158                 else:
 159                         self.progress.set_fraction(float(done) / total)
 160
 161         def set_message(self, message):
 162                 import pango
 163                 self.comment.set_text(message)
 164                 attrs = pango.AttrList()
 165                 attrs.insert(pango.AttrWeight(pango.WEIGHT_BOLD, end_index = len(message)))
 166                 self.comment.set_attributes(attrs)
 167                 self.comment.show()
 168
 169         def use_systray_icon(self):
 170                 try:
 171                         self.systray_icon = gtk.status_icon_new_from_icon_name("zeroinstall-zero2desktop")
 172                 except Exception, ex:
 173                         info(_("No system tray support: %s"), ex)
 174                 else:
 175                         root_iface = iface_cache.iface_cache.get_interface(self.policy.root)
 176                         self.systray_icon.set_tooltip(_('Checking for updates for %s') % root_iface.get_name())
 177                         self.systray_icon.connect('activate', self.remove_systray_icon)
 178                         self.systray_icon_blocker = tasks.Blocker('Tray icon clicked')
 179
 180         def remove_systray_icon(self, i = None):
 181                 assert self.systray_icon, i
 182                 self.show()
 183                 self.systray_icon.set_visible(False)
 184                 self.systray_icon = None
 185                 self.systray_icon_blocker.trigger()
 186                 self.systray_icon_blocker = None
 187
 188         def report_exception(self, ex):
 189                 if not isinstance(ex, SafeException):
 190                         import traceback
 191                         traceback.print_exc()
 192                 if self.systray_icon:
 193                         self.systray_icon.set_blinking(True)
 194                         self.systray_icon.set_tooltip(str(ex) + '\n' + _('(click for details)'))
 195                 else:
 196                         dialog.alert(self.window, str(ex))
 197
 198 gui_help = help_box.HelpBox(_("Injector Help"),
 199 (_('Overview'), '\n' +
 200 _("""A program is made up of many different components, typically written by different \
 201 groups of people. Each component is available in multiple versions. Zero Install is \
 202 used when starting a program. Its job is to decide which implementation of each required \
 203 component to use.
 204
 205 Zero Install starts with the program you want to run (like 'The Gimp') and chooses an \
 206 implementation (like 'The Gimp 2.2.0'). However, this implementation \
 207 will in turn depend on other components, such as 'GTK' (which draws the menus \
 208 and buttons). Thus, it must choose implementations of \
 209 each dependency (each of which may require further components, and so on).""")),
 210
 211 (_('List of components'), '\n' +
 212 _("""The main window displays all these components, and the version of each chosen \
 213 implementation. The top-most one represents the program you tried to run, and each direct \
 214 child is a dependency. The 'Fetch' column shows the amount of data that needs to be \
 215 downloaded, or '(cached)' if it is already on this computer.
 216
 217 If you are happy with the choices shown, click on the Download (or Run) button to \
 218 download (and run) the program.""")),
 219
 220 (_('Choosing different versions'), '\n' +
 221 _("""To control which implementations (versions) are chosen you can click on Preferences \
 222 and adjust the network policy and the overall stability policy. These settings affect \
 223 all programs run using Zero Install.
 224
 225 Alternatively, you can edit the policy of an individual component by clicking on the \
 226 button at the end of its line in the table and choosing "Show Versions" from the menu. \
 227 See that dialog's help text for more information.""") + '\n'),
 228
 229 (_('Reporting bugs'), '\n' +
 230 _("""To report a bug, right-click over the component which you think contains the problem \
 231 and choose 'Report a Bug...' from the menu. If you don't know which one is the cause, \
 232 choose the top one (i.e. the program itself). The program's author can reassign the \
 233 bug if necessary, or switch to using a different version of the library.""") + '\n'),
 234
 235 (_('The cache'), '\n' +
 236 _("""Each version of a program that is downloaded is stored in the Zero Install cache. This \
 237 means that it won't need to be downloaded again each time you run the program. The \
 238 "0store manage" command can be used to view the cache.""") + '\n'),
 239 )