zeroinstall/0launch-gui/properties.py

   1 # Copyright (C) 2009, Thomas Leonard
   2 # See the README file for details, or visit http://0install.net.
   3
   4 import zeroinstall
   5 import os
   6 from zeroinstall.support import tasks
   7 from zeroinstall.injector.model import Interface, Feed, stable, testing, developer, stability_levels
   8 from zeroinstall.injector import writer, namespaces, gpg
   9 from zeroinstall.gtkui import help_box
  10
  11 import gtk
  12 from logging import warn
  13
  14 from dialog import DialogResponse, Template
  15 from impl_list import ImplementationList
  16 import time
  17 import dialog
  18
  19 _dialogs = {}   # Interface -> Properties
  20
  21 def enumerate(items):
  22         x = 0
  23         for i in items:
  24                 yield x, i
  25                 x += 1
  26
  27 def format_para(para):
  28         lines = [l.strip() for l in para.split('\n')]
  29         return ' '.join(lines)
  30
  31 def have_source_for(policy, interface):
  32         iface_cache = policy.config.iface_cache
  33         # Note: we don't want to actually fetch the source interfaces at
  34         # this point, so we check whether:
  35         # - We have a feed of type 'src' (not fetched), or
  36         # - We have a source implementation in a regular feed
  37         for f in iface_cache.get_feed_imports(interface):
  38                 if f.machine == 'src':
  39                         return True
  40         # Don't have any src feeds. Do we have a source implementation
  41         # as part of a regular feed?
  42         for x in iface_cache.get_implementations(interface):
  43                 if x.machine == 'src':
  44                         return True
  45         return False
  46
  47 class Description:
  48         def __init__(self, widgets):
  49                 description = widgets.get_widget('description')
  50                 description.connect('button-press-event', self.button_press)
  51
  52                 self.buffer = description.get_buffer()
  53                 self.heading_style = self.buffer.create_tag(underline = True, scale = 1.2)
  54                 self.link_style = self.buffer.create_tag(underline = True, foreground = 'blue')
  55                 description.set_size_request(-1, 100)
  56
  57         def button_press(self, tv, bev):
  58                 if bev.type == gtk.gdk.BUTTON_PRESS and bev.button == 1:
  59                         x, y = tv.window_to_buffer_coords(tv.get_window_type(bev.window),
  60                                                           int(bev.x), int(bev.y))
  61                         itr = tv.get_iter_at_location(x, y)
  62                         if itr and self.link_style in itr.get_tags():
  63                                 if not itr.begins_tag(self.link_style):
  64                                         itr.backward_to_tag_toggle(self.link_style)
  65                                 end = itr.copy()
  66                                 end.forward_to_tag_toggle(self.link_style)
  67                                 target = itr.get_text(end).strip()
  68                                 import browser
  69                                 browser.open_in_browser(target)
  70
  71         def strtime(self, secs):
  72                 try:
  73                         from locale import nl_langinfo, D_T_FMT
  74                         return time.strftime(nl_langinfo(D_T_FMT), time.localtime(secs))
  75                 except (ImportError, ValueError):
  76                         return time.ctime(secs)
  77
  78         def set_details(self, iface_cache, feed):
  79                 buffer = self.buffer
  80                 heading_style = self.heading_style
  81
  82                 buffer.delete(buffer.get_start_iter(), buffer.get_end_iter())
  83
  84                 iter = buffer.get_start_iter()
  85
  86                 if feed is None:
  87                         buffer.insert(iter, 'Not yet downloaded.')
  88                         return
  89
  90                 if isinstance(feed, Exception):
  91                         buffer.insert(iter, unicode(feed))
  92                         return
  93
  94                 buffer.insert_with_tags(iter,
  95                         '%s ' % feed.get_name(), heading_style)
  96                 buffer.insert(iter, '(%s)' % feed.summary)
  97
  98                 buffer.insert(iter, '\n%s\n' % feed.url)
  99
 100                 # (converts to local time)
 101                 if feed.last_modified:
 102                         buffer.insert(iter, '\n' + _('Last upstream change: %s') % self.strtime(feed.last_modified))
 103
 104                 if feed.last_checked:
 105                         buffer.insert(iter, '\n' + _('Last checked: %s') % self.strtime(feed.last_checked))
 106
 107                 last_check_attempt = iface_cache.get_last_check_attempt(feed.url)
 108                 if last_check_attempt:
 109                         if feed.last_checked and feed.last_checked >= last_check_attempt:
 110                                 pass    # Don't bother reporting successful attempts
 111                         else:
 112                                 buffer.insert(iter, '\n' + _('Last check attempt: %s (failed or in progress)') %
 113                                                 self.strtime(last_check_attempt))
 114
 115                 buffer.insert_with_tags(iter, '\n\n' + _('Description') + '\n', heading_style)
 116
 117                 paragraphs = [format_para(p) for p in (feed.description or "-").split('\n\n')]
 118
 119                 buffer.insert(iter, '\n\n'.join(paragraphs))
 120                 buffer.insert(iter, '\n')
 121
 122                 need_gap = True
 123                 for x in feed.get_metadata(namespaces.XMLNS_IFACE, 'homepage'):
 124                         if need_gap:
 125                                 buffer.insert(iter, '\n')
 126                                 need_gap = False
 127                         buffer.insert(iter, _('Homepage: '))
 128                         buffer.insert_with_tags(iter, '%s\n' % x.content, self.link_style)
 129
 130                 buffer.insert_with_tags(iter, '\n' + _('Signatures') + '\n', heading_style)
 131                 sigs = iface_cache.get_cached_signatures(feed.url)
 132                 if sigs:
 133                         for sig in sigs:
 134                                 if isinstance(sig, gpg.ValidSig):
 135                                         name = _('<unknown>')
 136                                         details = sig.get_details()
 137                                         for item in details:
 138                                                 if item[0] == 'uid' and len(item) > 9:
 139                                                         name = item[9]
 140                                                         break
 141                                         buffer.insert_with_tags(iter, _('Valid signature by "%(name)s"\n- Dated: %(sig_date)s\n- Fingerprint: %(sig_fingerprint)s\n') %
 142                                                         {'name': name, 'sig_date': time.strftime('%c', time.localtime(sig.get_timestamp())), 'sig_fingerprint': sig.fingerprint})
 143                                         if not sig.is_trusted():
 144                                                 if os.path.isabs(feed.url):
 145                                                         buffer.insert_with_tags(iter, _('WARNING: This key is not in the trusted list') + '\n')
 146                                                 else:
 147                                                         buffer.insert_with_tags(iter, _('WARNING: This key is not in the trusted list (either you removed it, or '
 148                                                                                         'you trust one of the other signatures)') + '\n')
 149                                 else:
 150                                         buffer.insert_with_tags(iter, '%s\n' % sig)
 151                 else:
 152                         buffer.insert_with_tags(iter, _('No signature information (old style feed or out-of-date cache)') + '\n')
 153
 154 class Feeds:
 155         URI = 0
 156         ARCH = 1
 157         USED = 2
 158
 159         def __init__(self, policy, interface, widgets):
 160                 self.policy = policy
 161                 self.interface = interface
 162
 163                 self.model = gtk.ListStore(str, str, bool)
 164
 165                 self.description = Description(widgets)
 166
 167                 self.lines = self.build_model()
 168                 for line in self.lines:
 169                         self.model.append(line)
 170
 171                 add_remote_feed_button = widgets.get_widget('add_remote_feed')
 172                 add_remote_feed_button.connect('clicked', lambda b: add_remote_feed(policy, widgets.get_widget(), interface))
 173
 174                 add_local_feed_button = widgets.get_widget('add_local_feed')
 175                 add_local_feed_button.connect('clicked', lambda b: add_local_feed(policy, interface))
 176
 177                 self.remove_feed_button = widgets.get_widget('remove_feed')
 178                 def remove_feed(button):
 179                         model, iter = self.tv.get_selection().get_selected()
 180                         feed_uri = model[iter][Feeds.URI]
 181                         for x in interface.extra_feeds:
 182                                 if x.uri == feed_uri:
 183                                         if x.user_override:
 184                                                 interface.extra_feeds.remove(x)
 185                                                 writer.save_interface(interface)
 186                                                 import main
 187                                                 main.recalculate()
 188                                                 return
 189                                         else:
 190                                                 dialog.alert(self.get_toplevel(),
 191                                                         _("Can't remove '%s' as you didn't add it.") % feed_uri)
 192                                                 return
 193                         raise Exception(_("Missing feed '%s'!") % feed_uri)
 194                 self.remove_feed_button.connect('clicked', remove_feed)
 195
 196                 self.tv = widgets.get_widget('feeds_list')
 197                 self.tv.set_model(self.model)
 198                 text = gtk.CellRendererText()
 199                 self.tv.append_column(gtk.TreeViewColumn(_('Source'), text, text = Feeds.URI, sensitive = Feeds.USED))
 200                 self.tv.append_column(gtk.TreeViewColumn(_('Arch'), text, text = Feeds.ARCH, sensitive = Feeds.USED))
 201
 202                 sel = self.tv.get_selection()
 203                 sel.set_mode(gtk.SELECTION_BROWSE)
 204                 sel.connect('changed', self.sel_changed)
 205                 sel.select_path((0,))
 206
 207         def build_model(self):
 208                 iface_cache = self.policy.config.iface_cache
 209
 210                 usable_feeds = frozenset(self.policy.usable_feeds(self.interface))
 211                 unusable_feeds = frozenset(iface_cache.get_feed_imports(self.interface)) - usable_feeds
 212
 213                 out = [[self.interface.uri, None, True]]
 214
 215                 for feed in usable_feeds:
 216                         out.append([feed.uri, feed.arch, True])
 217                 for feed in unusable_feeds:
 218                         out.append([feed.uri, feed.arch, False])
 219                 return out
 220
 221         def sel_changed(self, sel):
 222                 iface_cache = self.policy.config.iface_cache
 223
 224                 model, miter = sel.get_selected()
 225                 if not miter: return    # build in progress
 226                 feed_url = model[miter][Feeds.URI]
 227                 # Only enable removing user_override feeds
 228                 enable_remove = False
 229                 for x in self.interface.extra_feeds:
 230                         if x.uri == feed_url:
 231                                 if x.user_override:
 232                                         enable_remove = True
 233                 self.remove_feed_button.set_sensitive( enable_remove )
 234                 try:
 235                         self.description.set_details(iface_cache, iface_cache.get_feed(feed_url))
 236                 except zeroinstall.SafeException, ex:
 237                         self.description.set_details(iface_cache, ex)
 238
 239         def updated(self):
 240                 new_lines = self.build_model()
 241                 if new_lines != self.lines:
 242                         self.lines = new_lines
 243                         self.model.clear()
 244                         for line in self.lines:
 245                                 self.model.append(line)
 246                         self.tv.get_selection().select_path((0,))
 247                 else:
 248                         self.sel_changed(self.tv.get_selection())
 249
 250 class Properties:
 251         interface = None
 252         use_list = None
 253         window = None
 254         policy = None
 255
 256         def __init__(self, policy, interface, compile, show_versions = False):
 257                 self.policy = policy
 258
 259                 widgets = Template('interface_properties')
 260
 261                 self.interface = interface
 262
 263                 window = widgets.get_widget('interface_properties')
 264                 self.window = window
 265                 window.set_title(_('Properties for %s') % interface.get_name())
 266                 window.set_default_size(-1, gtk.gdk.screen_height() / 3)
 267
 268                 self.compile_button = widgets.get_widget('compile')
 269                 self.compile_button.connect('clicked', lambda b: compile(interface))
 270                 window.set_default_response(gtk.RESPONSE_CANCEL)
 271
 272                 def response(dialog, resp):
 273                         if resp == gtk.RESPONSE_CANCEL:
 274                                 window.destroy()
 275                         elif resp == gtk.RESPONSE_HELP:
 276                                 properties_help.display()
 277                 window.connect('response', response)
 278
 279                 notebook = widgets.get_widget('interface_notebook')
 280                 assert notebook
 281
 282                 feeds = Feeds(policy, interface, widgets)
 283
 284                 stability = widgets.get_widget('preferred_stability')
 285                 stability.set_active(0)
 286                 if interface.stability_policy:
 287                         i = [stable, testing, developer].index(interface.stability_policy)
 288                         i += 1
 289                         if i == 0:
 290                                 warn(_("Unknown stability policy %s"), interface.stability_policy)
 291                 else:
 292                         i = 0
 293                 stability.set_active(i)
 294
 295                 def set_stability_policy(combo, stability = stability): # (pygtk bug?)
 296                         i = stability.get_active()
 297                         if i == 0:
 298                                 new_stability = None
 299                         else:
 300                                 name = ['stable', 'testing', 'developer'][i-1]
 301                                 new_stability = stability_levels[name]
 302                         interface.set_stability_policy(new_stability)
 303                         writer.save_interface(interface)
 304                         import main
 305                         main.recalculate()
 306                 stability.connect('changed', set_stability_policy)
 307
 308                 self.use_list = ImplementationList(policy, interface, widgets)
 309
 310                 self.update_list()
 311
 312                 feeds.tv.grab_focus()
 313
 314                 def updated():
 315                         self.update_list()
 316                         feeds.updated()
 317                         self.shade_compile()
 318                 window.connect('destroy', lambda s: policy.watchers.remove(updated))
 319                 policy.watchers.append(updated)
 320                 self.shade_compile()
 321
 322                 if show_versions:
 323                         notebook.next_page()
 324
 325         def show(self):
 326                 self.window.show()
 327
 328         def destroy(self):
 329                 self.window.destroy()
 330
 331         def shade_compile(self):
 332                 self.compile_button.set_sensitive(have_source_for(self.policy, self.interface))
 333
 334         def update_list(self):
 335                 ranked_items = self.policy.solver.details.get(self.interface, None)
 336                 if ranked_items is None:
 337                         # The Solver didn't get this far, but we should still display them!
 338                         ranked_items = [(impl, _("(solve aborted before here)"))
 339                                         for impl in self.interface.implementations.values()]
 340                 # Always sort by version
 341                 ranked_items.sort()
 342                 self.use_list.set_items(ranked_items)
 343
 344 @tasks.async
 345 def add_remote_feed(policy, parent, interface):
 346         try:
 347                 iface_cache = policy.config.iface_cache
 348
 349                 d = gtk.MessageDialog(parent, 0, gtk.MESSAGE_QUESTION, gtk.BUTTONS_CANCEL,
 350                         _('Enter the URL of the new source of implementations of this interface:'))
 351                 d.add_button(gtk.STOCK_ADD, gtk.RESPONSE_OK)
 352                 d.set_default_response(gtk.RESPONSE_OK)
 353                 entry = gtk.Entry()
 354
 355                 align = gtk.VBox(False, 0)
 356                 align.set_border_width(4)
 357                 align.add(entry)
 358                 d.vbox.pack_start(align)
 359                 entry.set_activates_default(True)
 360
 361                 entry.set_text('')
 362
 363                 d.vbox.show_all()
 364
 365                 error_label = gtk.Label('')
 366                 error_label.set_padding(4, 4)
 367                 align.pack_start(error_label)
 368
 369                 d.show()
 370
 371                 def error(message):
 372                         if message:
 373                                 error_label.set_text(message)
 374                                 error_label.show()
 375                         else:
 376                                 error_label.hide()
 377
 378                 while True:
 379                         got_response = DialogResponse(d)
 380                         yield got_response
 381                         tasks.check(got_response)
 382                         resp = got_response.response
 383
 384                         error(None)
 385                         if resp == gtk.RESPONSE_OK:
 386                                 try:
 387                                         url = entry.get_text()
 388                                         if not url:
 389                                                 raise zeroinstall.SafeException(_('Enter a URL'))
 390                                         fetch = policy.fetcher.download_and_import_feed(url, iface_cache)
 391                                         if fetch:
 392                                                 d.set_sensitive(False)
 393                                                 yield fetch
 394                                                 d.set_sensitive(True)
 395                                                 tasks.check(fetch)
 396
 397                                                 iface = iface_cache.get_interface(url)
 398
 399                                                 d.set_sensitive(True)
 400                                                 if not iface.name:
 401                                                         error(_('Failed to read interface'))
 402                                                         return
 403                                                 if not iface.feed_for:
 404                                                         error(_("Feed '%(feed)s' is not a feed for '%(feed_for)s'.") % {'feed': iface.get_name(), 'feed_for': interface.get_name()})
 405                                                 elif interface.uri not in iface.feed_for:
 406                                                         error(_("This is not a feed for '%(uri)s'.\nOnly for:\n%(feed_for)s") %
 407                                                                 {'uri': interface.uri, 'feed_for': '\n'.join(iface.feed_for)})
 408                                                 elif iface.uri in [f.uri for f in interface.extra_feeds]:
 409                                                         error(_("Feed from '%s' has already been added!") % iface.uri)
 410                                                 else:
 411                                                         interface.extra_feeds.append(Feed(iface.uri, arch = None, user_override = True))
 412                                                         writer.save_interface(interface)
 413                                                         d.destroy()
 414                                                         import main
 415                                                         main.recalculate()
 416                                 except zeroinstall.SafeException, ex:
 417                                         error(str(ex))
 418                         else:
 419                                 d.destroy()
 420                                 return
 421         except Exception, ex:
 422                 import traceback
 423                 traceback.print_exc()
 424                 policy.handler.report_error(ex)
 425
 426 def add_local_feed(policy, interface):
 427         chooser = gtk.FileChooserDialog(_('Select XML feed file'), action=gtk.FILE_CHOOSER_ACTION_OPEN, buttons=(gtk.STOCK_CANCEL, gtk.RESPONSE_CANCEL, gtk.STOCK_OPEN, gtk.RESPONSE_OK))
 428         def ok(feed):
 429                 from zeroinstall.injector import reader
 430                 try:
 431                         feed_targets = policy.get_feed_targets(feed)
 432                         if interface not in feed_targets:
 433                                 raise Exception(_("Not a valid feed for '%(uri)s'; this is a feed for:\n%(feed_for)s") %
 434                                                 {'uri': interface.uri,
 435                                                 'feed_for': '\n'.join([f.uri for f in feed_targets])})
 436                         if feed in [f.uri for f in interface.extra_feeds]:
 437                                 dialog.alert(None, _('This feed is already registered.'))
 438                         else:
 439                                 interface.extra_feeds.append(Feed(feed, user_override = True, arch = None))
 440
 441                         writer.save_interface(interface)
 442                         chooser.destroy()
 443                         reader.update_from_cache(interface)
 444                         import main
 445                         main.recalculate()
 446                 except Exception, ex:
 447                         dialog.alert(None, _("Error in feed file '%(feed)s':\n\n%(exception)s") % {'feed': feed, 'exception': str(ex)})
 448
 449         def check_response(widget, response):
 450                 if response == gtk.RESPONSE_OK:
 451                         ok(widget.get_filename())
 452                 elif response == gtk.RESPONSE_CANCEL:
 453                         widget.destroy()
 454
 455         chooser.connect('response', check_response)
 456         chooser.show()
 457
 458 def edit(policy, interface, compile, show_versions = False):
 459         assert isinstance(interface, Interface)
 460         if interface in _dialogs:
 461                 _dialogs[interface].destroy()
 462         _dialogs[interface] = Properties(policy, interface, compile, show_versions = show_versions)
 463         _dialogs[interface].show()
 464
 465 properties_help = help_box.HelpBox(_("Injector Properties Help"),
 466 (_('Interface properties'), '\n' +
 467 _("""This window displays information about an interface. There are two tabs at the top: \
 468 Feeds shows the places where the injector looks for implementations of the interface, while \
 469 Versions shows the list of implementations found (from all feeds) in order of preference.""")),
 470
 471 (_('The Feeds tab'), '\n' +
 472 _("""At the top is a list of feeds. By default, the injector uses the full name of the interface \
 473 as the default feed location (so if you ask it to run the program "http://foo/bar.xml" then it will \
 474 by default get the list of versions by downloading "http://foo/bar.xml".
 475
 476 You can add and remove feeds using the buttons on the right. The main feed may also add \
 477 some extra feeds itself. If you've checked out a developer version of a program, you can use \
 478 the 'Add Local Feed...' button to let the injector know about it, for example.
 479
 480 Below the list of feeds is a box describing the selected one:
 481
 482 - At the top is its short name.
 483 - Below that is the address (a URL or filename).
 484 - 'Last upstream change' shows the version of the cached copy of the interface file.
 485 - 'Last checked' is the last time a fresh copy of the upstream interface file was \
 486 downloaded.
 487 - Then there is a longer description of the interface.""")),
 488
 489 (_('The Versions tab'), '\n' +
 490 _("""This tab shows a list of all known implementations of the interface, from all the feeds. \
 491 The columns have the following meanings:
 492
 493 Version gives the version number. High-numbered versions are considered to be \
 494 better than low-numbered ones.
 495
 496 Released gives the date this entry was added to the feed.
 497
 498 Stability is 'stable' if the implementation is believed to be stable, 'buggy' if \
 499 it is known to contain serious bugs, and 'testing' if its stability is not yet \
 500 known. This information is normally supplied and updated by the author of the \
 501 software, but you can override their rating by right-clicking here (overridden \
 502 values are shown in upper-case). You can also use the special level 'preferred'.
 503
 504 Fetch indicates how much data needs to be downloaded to get this version if you don't \
 505 have it. If the implementation has already been downloaded to your computer, \
 506 it will say (cached). (local) means that you installed this version manually and \
 507 told Zero Install about it by adding a feed. (package) means that this version \
 508 is provided by your distribution's package manager, not by Zero Install. \
 509 In off-line mode, only cached implementations are considered for use.
 510
 511 Arch indicates what kind of computer system the implementation is for, or 'any' \
 512 if it works with all types of system.""") + '\n'),
 513 (_('Sort order'), '\n' +
 514 _("""The implementations are ordered by version number (highest first), with the \
 515 currently selected one in bold. This is the "best" usable version.
 516
 517 Unusable ones are those for incompatible \
 518 architectures, those marked as 'buggy' or 'insecure', versions explicitly marked as incompatible with \
 519 another interface you are using and, in off-line mode, uncached implementations. Unusable \
 520 implementations are shown crossed out.
 521
 522 For the usable implementations, the order is as follows:
 523
 524 - Preferred implementations come first.
 525
 526 - Then, if network use is set to 'Minimal', cached implementations come before \
 527 non-cached.
 528
 529 - Then, implementations at or above the selected stability level come before all others.
 530
 531 - Then, higher-numbered versions come before low-numbered ones.
 532
 533 - Then cached come before non-cached (for 'Full' network use mode).""") + '\n'),
 534
 535 (_('Compiling'), '\n' +
 536 _("""If there is no binary available for your system then you may be able to compile one from \
 537 source by clicking on the Compile button. If no source is available, the Compile button will \
 538 be shown shaded.""") + '\n'))