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