# Copyright (C) 2010 Canonical # # Authors: # Gary Lasker # Michael Vogt # # This program is free software; you can redistribute it and/or modify it under # the terms of the GNU General Public License as published by the Free Software # Foundation; version 3. # # This program is distributed in the hope that it will be useful, but WITHOUT # ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS # FOR A PARTICULAR PURPOSE. See the GNU General Public License for more # details. # # You should have received a copy of the GNU General Public License along with # this program; if not, write to the Free Software Foundation, Inc., # 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA import logging import xapian from gettext import gettext as _ import softwarecenter.distro from softwarecenter.enums import ( SortMethods, Icons, ViewPages, ) LOG = logging.getLogger(__name__) class ChannelsManager(object): def __init__(self, db, **kwargs): self.distro = softwarecenter.distro.get_distro() self.db = db # public @property def channels(self): return self._get_channels_from_db() @property def channels_installed_only(self): return self._get_channels_from_db(True) @classmethod def channel_available(kls, channelname): pass # private def _get_channels_from_db(self, installed_only=False): """ (internal) implements 'channels()' and 'channels_installed_only()' properties """ distro_channel_origin = self.distro.get_distro_channel_name() # gather the set of software channels and order them other_channel_list = [] cached_origins = [] for channel_iter in self.db.xapiandb.allterms("XOL"): if len(channel_iter.term) == 3: continue channel_name = channel_iter.term[3:] channel_origin = "" # get origin information for this channel m = self.db.xapiandb.postlist_begin(channel_iter.term) doc = self.db.xapiandb.get_document(m.get_docid()) for term_iter in doc.termlist(): if (term_iter.term.startswith("XOO") and len(term_iter.term) > 3): channel_origin = term_iter.term[3:] break LOG.debug("channel_name: %s" % channel_name) LOG.debug("channel_origin: %s" % channel_origin) if channel_origin not in cached_origins: other_channel_list.append((channel_name, channel_origin)) cached_origins.append(channel_origin) dist_channel = None other_channels = [] unknown_channel = [] local_channel = None for (channel_name, channel_origin) in other_channel_list: if not channel_name: unknown_channel.append(SoftwareChannel( channel_name, channel_origin, None, installed_only=installed_only)) elif channel_origin == distro_channel_origin: dist_channel = (SoftwareChannel( channel_name, channel_origin, None, installed_only=installed_only)) elif channel_name == "notdownloadable": if installed_only: local_channel = SoftwareChannel( channel_name, None, None, installed_only=installed_only) else: other_channels.append(SoftwareChannel( channel_name, channel_origin, None, installed_only=installed_only)) # set them in order channels = [] if dist_channel is not None: channels.append(dist_channel) channels.extend(other_channels) channels.extend(unknown_channel) if local_channel is not None: channels.append(local_channel) for channel in channels: if installed_only: channel._channel_view_id = ViewPages.INSTALLED else: channel._channel_view_id = ViewPages.AVAILABLE return channels class SoftwareChannel(object): """ class to represent a software channel """ ICON_SIZE = 24 def __init__(self, channel_name, channel_origin, channel_component, source_entry=None, installed_only=False, channel_icon=None, channel_query=None, channel_sort_mode=SortMethods.BY_ALPHABET): """ configure the software channel object based on channel name, origin, and component (the latter for detecting the partner channel) """ self._channel_name = channel_name self._channel_origin = channel_origin self._channel_component = channel_component self._channel_color = None self._channel_view_id = None self.installed_only = installed_only self._channel_sort_mode = channel_sort_mode # distro specific stuff self.distro = softwarecenter.distro.get_distro() # configure the channel self._channel_display_name = self._get_display_name_for_channel( channel_name, channel_origin, channel_component) if channel_icon is None: self._channel_icon = self._get_icon_for_channel( channel_name, channel_origin, channel_component) else: self._channel_icon = channel_icon if channel_query is None: self._channel_query = self._get_channel_query_for_channel( channel_name, channel_origin, channel_component) else: self._channel_query = channel_query # a sources.list entry attached to the channel (this is currently # only used for not-yet-enabled channels) self._source_entry = source_entry # when the channel needs to be added to the systems sources.list self.needs_adding = False @property def name(self): """ return the channel name as represented in the xapian database """ return self._channel_name @property def origin(self): """ return the channel origin as represented in the xapian database """ return self._channel_origin @property def component(self): """ return the channel component as represented in the xapian database """ return self._channel_component @property def display_name(self): """ return the display name for the corresponding channel for use in the UI """ return self._channel_display_name @property def icon(self): """ return the icon that corresponds to each channel based on the channel name, its origin string or its component """ return self._channel_icon @property def query(self): """ return the xapian query to be used with this software channel """ return self._channel_query @property def sort_mode(self): """ return the sort mode for this software channel """ return self._channel_sort_mode # TODO: implement __cmp__ so that sort for channels is encapsulated # here as well def _get_display_name_for_channel(self, channel_name, channel_origin, channel_component): if channel_component == "partner": channel_display_name = _("Canonical Partners") elif not channel_origin: channel_display_name = _("Unknown") elif channel_origin == self.distro.get_distro_channel_name(): channel_display_name = self.distro.get_distro_channel_description() elif channel_name == "For Purchase": channel_display_name = _("For Purchase") elif channel_name == "Previous Purchases": channel_display_name = _("Previous Purchases") elif channel_name == "Application Review Board PPA": channel_display_name = _("Independent") elif channel_name == "notdownloadable": channel_display_name = _("Other") else: return channel_name return channel_display_name def _get_icon_for_channel(self, channel_name, channel_origin, channel_component): if channel_component == "partner": channel_icon = "partner" elif not channel_name: channel_icon = "unknown-channel" elif channel_origin == self.distro.get_distro_channel_name(): channel_icon = "distributor-logo" elif channel_name == "Application Review Board PPA": channel_icon = "system-users" elif channel_name == "For Purchase": channel_icon = "emblem-money" elif channel_origin and channel_origin.startswith("LP-PPA"): channel_icon = "ppa" elif channel_name == "notdownloadable": channel_icon = "application-default-icon" # TODO: add check for generic repository source (e.g., Google, Inc.) # channel_icon = "generic-repository" else: channel_icon = "unknown-channel" return channel_icon def _get_channel_query_for_channel(self, channel_name, channel_origin, channel_component): if channel_component == "partner": q1 = xapian.Query("XOCpartner") q2 = xapian.Query("AH%s-partner" % self.distro.get_codename()) channel_query = xapian.Query(xapian.Query.OP_OR, q1, q2) # show only apps when displaying the new apps archive elif channel_name == "Application Review Board PPA": channel_query = xapian.Query(xapian.Query.OP_AND, xapian.Query("XOL" + channel_name), xapian.Query("ATapplication")) elif channel_origin: channel_query = xapian.Query("XOO" + channel_origin) else: channel_query = xapian.Query("XOL" + channel_name) return channel_query def __str__(self): details = [] details.append("* SoftwareChannel") details.append(" name: %s" % self.name) details.append(" origin: %s" % self.origin) details.append(" component: %s" % self.component) details.append(" display_name: %s" % self.display_name) details.append(" iconname: %s" % self.icon) details.append(" query: %s" % self.query) details.append(" sort_mode: %s" % self.sort_mode) details.append(" installed_only: %s" % self.installed_only) return unicode('\n'.join(details), 'utf8').encode('utf8') class AllChannel(SoftwareChannel): def __init__(self, channel_name, installed_only): SoftwareChannel.__init__( self, channel_name, "all", None, installed_only=installed_only, channel_icon=Icons.FALLBACK) # overrides def _get_display_name_for_channel(self, channel_name, channel_origin, channel_component): return channel_name def _get_channel_query_for_channel(self, *args): pass class AllAvailableChannel(AllChannel): def __init__(self): AllChannel.__init__(self, _("All Software"), False) class AllInstalledChannel(AllChannel): def __init__(self): AllChannel.__init__(self, _("All Installed"), True) # singleton channels_manager = None def get_channels_manager(db): global channels_manager if channels_manager is None: from softwarecenter.enums import USE_PACKAGEKIT_BACKEND if not USE_PACKAGEKIT_BACKEND: from softwarecenter.backend.channel_impl.aptchannels import ( AptChannelsManager) channels_manager = AptChannelsManager(db) else: channels_manager = ChannelsManager(db) return channels_manager def is_channel_available(channelname): from softwarecenter.backend.channel_impl.aptchannels import ( AptChannelsManager) return AptChannelsManager.channel_available(channelname) if __name__ == "__main__": distro = softwarecenter.distro.get_distro() channel = SoftwareChannel(distro.get_distro_channel_name(), None, None) print(channel) channel = SoftwareChannel(distro.get_distro_channel_name(), None, "partner") print(channel)