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