gpodder/src/gpodder/gtkui/model.py

904 lines
33 KiB
Python

# -*- coding: utf-8 -*-
#
# gPodder - A media aggregator and podcast client
# Copyright (c) 2005-2018 The gPodder Team
#
# gPodder 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; either version 3 of the License, or
# (at your option) any later version.
#
# gPodder 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, see <http://www.gnu.org/licenses/>.
#
#
# gpodder.gtkui.model - GUI model classes for gPodder (2009-08-13)
# Based on code from libpodcasts.py (thp, 2005-10-29)
#
import cgi
import logging
import os
import re
import time
from gi.repository import GdkPixbuf, GObject, Gtk
import gpodder
from gpodder import coverart, model, query, util
from gpodder.gtkui import draw
_ = gpodder.gettext
logger = logging.getLogger(__name__)
try:
from gi.repository import Gio
have_gio = True
except ImportError:
have_gio = False
# ----------------------------------------------------------
class GEpisode(model.PodcastEpisode):
__slots__ = ()
@property
def title_markup(self):
return '%s\n<small>%s</small>' % (cgi.escape(self.title),
cgi.escape(self.channel.title))
@property
def markup_new_episodes(self):
if self.file_size > 0:
length_str = '%s; ' % util.format_filesize(self.file_size)
else:
length_str = ''
return ('<b>%s</b>\n<small>%s' + _('released %s') +
'; ' + _('from %s') + '</small>') % (
cgi.escape(re.sub('\s+', ' ', self.title)),
cgi.escape(length_str),
cgi.escape(self.pubdate_prop),
cgi.escape(re.sub('\s+', ' ', self.channel.title)))
@property
def markup_delete_episodes(self):
if self.total_time and self.current_position:
played_string = self.get_play_info_string()
elif not self.is_new:
played_string = _('played')
else:
played_string = _('unplayed')
downloaded_string = self.get_age_string()
if not downloaded_string:
downloaded_string = _('today')
return ('<b>%s</b>\n<small>%s; %s; ' + _('downloaded %s') +
'; ' + _('from %s') + '</small>') % (
cgi.escape(self.title),
cgi.escape(util.format_filesize(self.file_size)),
cgi.escape(played_string),
cgi.escape(downloaded_string),
cgi.escape(self.channel.title))
class GPodcast(model.PodcastChannel):
__slots__ = ()
EpisodeClass = GEpisode
class Model(model.Model):
PodcastClass = GPodcast
# ----------------------------------------------------------
# Singleton indicator if a row is a section
class SeparatorMarker(object): pass
class SectionMarker(object): pass
class BackgroundUpdate(object):
def __init__(self, model, episodes, include_description):
self.model = model
self.episodes = episodes
self.include_description = include_description
self.index = 0
def update(self):
model = self.model
include_description = self.include_description
started = time.time()
while self.episodes:
episode = self.episodes.pop(0)
base_fields = (
(model.C_URL, episode.url),
(model.C_TITLE, episode.title),
(model.C_EPISODE, episode),
(model.C_PUBLISHED_TEXT, episode.cute_pubdate()),
(model.C_PUBLISHED, episode.published),
)
update_fields = model.get_update_fields(episode, include_description)
model.set(model.get_iter((self.index,)), *(x for fields in (base_fields, update_fields)
for pair in fields for x in pair))
self.index += 1
# Check for the time limit of 20 ms after each 50 rows processed
if self.index % 50 == 0 and (time.time() - started) > 0.02:
break
return bool(self.episodes)
class EpisodeListModel(Gtk.ListStore):
C_URL, C_TITLE, C_FILESIZE_TEXT, C_EPISODE, C_STATUS_ICON, \
C_PUBLISHED_TEXT, C_DESCRIPTION, C_TOOLTIP, \
C_VIEW_SHOW_UNDELETED, C_VIEW_SHOW_DOWNLOADED, \
C_VIEW_SHOW_UNPLAYED, C_FILESIZE, C_PUBLISHED, \
C_TIME, C_TIME_VISIBLE, C_TOTAL_TIME, \
C_LOCKED = list(range(17))
VIEW_ALL, VIEW_UNDELETED, VIEW_DOWNLOADED, VIEW_UNPLAYED = list(range(4))
VIEWS = ['VIEW_ALL', 'VIEW_UNDELETED', 'VIEW_DOWNLOADED', 'VIEW_UNPLAYED']
# In which steps the UI is updated for "loading" animations
_UI_UPDATE_STEP = .03
# Steps for the "downloading" icon progress
PROGRESS_STEPS = 20
def __init__(self, config, on_filter_changed=lambda has_episodes: None):
Gtk.ListStore.__init__(self, str, str, str, object,
str, str, str, str, bool, bool, bool,
GObject.TYPE_INT64, GObject.TYPE_INT64, str, bool, GObject.TYPE_INT64, bool)
self._config = config
# Callback for when the filter / list changes, gets one parameter
# (has_episodes) that is True if the list has any episodes
self._on_filter_changed = on_filter_changed
# Filter to allow hiding some episodes
self._filter = self.filter_new()
self._sorter = Gtk.TreeModelSort(self._filter)
self._view_mode = self.VIEW_ALL
self._search_term = None
self._search_term_eql = None
self._filter.set_visible_func(self._filter_visible_func)
# Are we currently showing the "all episodes" view?
self._all_episodes_view = False
self.ICON_AUDIO_FILE = 'audio-x-generic'
self.ICON_VIDEO_FILE = 'video-x-generic'
self.ICON_IMAGE_FILE = 'image-x-generic'
self.ICON_GENERIC_FILE = 'text-x-generic'
self.ICON_DOWNLOADING = Gtk.STOCK_GO_DOWN
self.ICON_DELETED = Gtk.STOCK_DELETE
self.background_update = None
self.background_update_tag = None
if 'KDE_FULL_SESSION' in os.environ:
# Workaround until KDE adds all the freedesktop icons
# See https://bugs.kde.org/show_bug.cgi?id=233505 and
# http://gpodder.org/bug/553
self.ICON_DELETED = 'archive-remove'
def _format_filesize(self, episode):
if episode.file_size > 0:
return util.format_filesize(episode.file_size, digits=1)
else:
return None
def _filter_visible_func(self, model, iter, misc):
# If searching is active, set visibility based on search text
if self._search_term is not None:
episode = model.get_value(iter, self.C_EPISODE)
if episode is None:
return False
try:
return self._search_term_eql.match(episode)
except Exception as e:
return True
if self._view_mode == self.VIEW_ALL:
return True
elif self._view_mode == self.VIEW_UNDELETED:
return model.get_value(iter, self.C_VIEW_SHOW_UNDELETED)
elif self._view_mode == self.VIEW_DOWNLOADED:
return model.get_value(iter, self.C_VIEW_SHOW_DOWNLOADED)
elif self._view_mode == self.VIEW_UNPLAYED:
return model.get_value(iter, self.C_VIEW_SHOW_UNPLAYED)
return True
def get_filtered_model(self):
"""Returns a filtered version of this episode model
The filtered version should be displayed in the UI,
as this model can have some filters set that should
be reflected in the UI.
"""
return self._sorter
def has_episodes(self):
"""Returns True if episodes are visible (filtered)
If episodes are visible with the current filter
applied, return True (otherwise return False).
"""
return bool(len(self._filter))
def set_view_mode(self, new_mode):
"""Sets a new view mode for this model
After setting the view mode, the filtered model
might be updated to reflect the new mode."""
if self._view_mode != new_mode:
self._view_mode = new_mode
self._filter.refilter()
self._on_filter_changed(self.has_episodes())
def get_view_mode(self):
"""Returns the currently-set view mode"""
return self._view_mode
def set_search_term(self, new_term):
if self._search_term != new_term:
self._search_term = new_term
self._search_term_eql = query.UserEQL(new_term)
self._filter.refilter()
self._on_filter_changed(self.has_episodes())
def get_search_term(self):
return self._search_term
def _format_description(self, episode, include_description=False):
title = episode.trimmed_title
if episode.state != gpodder.STATE_DELETED and episode.is_new:
yield '<b>'
yield cgi.escape(title)
yield '</b>'
else:
yield cgi.escape(title)
if include_description:
yield '\n'
if self._all_episodes_view:
yield _('from %s') % cgi.escape(episode.channel.title)
else:
description = episode.one_line_description()
if description.startswith(title):
description = description[len(title):].strip()
yield cgi.escape(description)
def replace_from_channel(self, channel, include_description=False):
"""
Add episode from the given channel to this model.
Downloading should be a callback.
include_description should be a boolean value (True if description
is to be added to the episode row, or False if not)
"""
# Remove old episodes in the list store
self.clear()
self._all_episodes_view = getattr(channel, 'ALL_EPISODES_PROXY', False)
# Avoid gPodder bug 1291
if channel is None:
episodes = []
else:
episodes = channel.get_all_episodes()
# Always make a copy, so we can pass the episode list to BackgroundUpdate
episodes = list(episodes)
for _ in range(len(episodes)):
self.append()
self._update_from_episodes(episodes, include_description)
def _update_from_episodes(self, episodes, include_description):
if self.background_update_tag is not None:
GObject.source_remove(self.background_update_tag)
self.background_update = BackgroundUpdate(self, episodes, include_description)
self.background_update_tag = GObject.idle_add(self._update_background)
def _update_background(self):
if self.background_update is not None:
if self.background_update.update():
return True
self.background_update = None
self.background_update_tag = None
self._on_filter_changed(self.has_episodes())
return False
def update_all(self, include_description=False):
if self.background_update is None:
episodes = [row[self.C_EPISODE] for row in self]
else:
# Update all episodes that have already been initialized...
episodes = [row[self.C_EPISODE] for index, row in enumerate(self) if index < self.background_update.index]
# ...and also include episodes that still need to be initialized
episodes.extend(self.background_update.episodes)
self._update_from_episodes(episodes, include_description)
def update_by_urls(self, urls, include_description=False):
for row in self:
if row[self.C_URL] in urls:
self.update_by_iter(row.iter, include_description)
def update_by_filter_iter(self, iter, include_description=False):
# Convenience function for use by "outside" methods that use iters
# from the filtered episode list model (i.e. all UI things normally)
iter = self._sorter.convert_iter_to_child_iter(iter)
self.update_by_iter(self._filter.convert_iter_to_child_iter(iter),
include_description)
def get_update_fields(self, episode, include_description):
show_bullet = False
show_padlock = False
show_missing = False
status_icon = None
tooltip = []
view_show_undeleted = True
view_show_downloaded = False
view_show_unplayed = False
icon_theme = Gtk.IconTheme.get_default()
if episode.downloading:
tooltip.append('%s %d%%' % (_('Downloading'),
int(episode.download_task.progress * 100)))
index = int(self.PROGRESS_STEPS * episode.download_task.progress)
status_icon = 'gpodder-progress-%d' % index
view_show_downloaded = True
view_show_unplayed = True
else:
if episode.state == gpodder.STATE_DELETED:
tooltip.append(_('Deleted'))
status_icon = self.ICON_DELETED
view_show_undeleted = False
elif episode.state == gpodder.STATE_NORMAL and \
episode.is_new:
tooltip.append(_('New episode'))
view_show_downloaded = True
view_show_unplayed = True
elif episode.state == gpodder.STATE_DOWNLOADED:
tooltip = []
view_show_downloaded = True
view_show_unplayed = episode.is_new
show_bullet = episode.is_new
show_padlock = episode.archive
show_missing = not episode.file_exists()
filename = episode.local_filename(create=False, check_only=True)
file_type = episode.file_type()
if file_type == 'audio':
tooltip.append(_('Downloaded episode'))
status_icon = self.ICON_AUDIO_FILE
elif file_type == 'video':
tooltip.append(_('Downloaded video episode'))
status_icon = self.ICON_VIDEO_FILE
elif file_type == 'image':
tooltip.append(_('Downloaded image'))
status_icon = self.ICON_IMAGE_FILE
else:
tooltip.append(_('Downloaded file'))
status_icon = self.ICON_GENERIC_FILE
# Try to find a themed icon for this file
# doesn't work on win32 (opus files are showed as text)
if filename is not None and have_gio and not gpodder.ui.win32:
file = Gio.File.new_for_path(filename)
if file.query_exists():
file_info = file.query_info('*', Gio.FileQueryInfoFlags.NONE, None)
icon = file_info.get_icon()
for icon_name in icon.get_names():
if icon_theme.has_icon(icon_name):
status_icon = icon_name
break
if show_missing:
tooltip.append(_('missing file'))
else:
if show_bullet:
if file_type == 'image':
tooltip.append(_('never displayed'))
elif file_type in ('audio', 'video'):
tooltip.append(_('never played'))
else:
tooltip.append(_('never opened'))
else:
if file_type == 'image':
tooltip.append(_('displayed'))
elif file_type in ('audio', 'video'):
tooltip.append(_('played'))
else:
tooltip.append(_('opened'))
if show_padlock:
tooltip.append(_('deletion prevented'))
if episode.total_time > 0 and episode.current_position:
tooltip.append('%d%%' % (100. * float(episode.current_position) /
float(episode.total_time),))
if episode.total_time:
total_time = util.format_time(episode.total_time)
if total_time:
tooltip.append(total_time)
tooltip = ', '.join(tooltip)
description = ''.join(self._format_description(episode, include_description))
return (
(self.C_STATUS_ICON, status_icon),
(self.C_VIEW_SHOW_UNDELETED, view_show_undeleted),
(self.C_VIEW_SHOW_DOWNLOADED, view_show_downloaded),
(self.C_VIEW_SHOW_UNPLAYED, view_show_unplayed),
(self.C_DESCRIPTION, description),
(self.C_TOOLTIP, tooltip),
(self.C_TIME, episode.get_play_info_string()),
(self.C_TIME_VISIBLE, bool(episode.total_time)),
(self.C_TOTAL_TIME, episode.total_time),
(self.C_LOCKED, episode.archive),
(self.C_FILESIZE_TEXT, self._format_filesize(episode)),
(self.C_FILESIZE, episode.file_size),
)
def update_by_iter(self, iter, include_description=False):
episode = self.get_value(iter, self.C_EPISODE)
if episode is not None:
self.set(iter, *(x for pair in self.get_update_fields(episode, include_description) for x in pair))
class PodcastChannelProxy(object):
ALL_EPISODES_PROXY = True
def __init__(self, db, config, channels):
self._db = db
self._config = config
self.channels = channels
self.title = _('All episodes')
self.description = _('from all podcasts')
# self.parse_error = ''
self.url = ''
self.section = ''
self.id = None
self.cover_file = coverart.CoverDownloader.ALL_EPISODES_ID
self.cover_url = None
self.auth_username = None
self.auth_password = None
self.pause_subscription = False
self.sync_to_mp3_player = False
self.cover_thumb = None
self.auto_archive_episodes = False
def get_statistics(self):
# Get the total statistics for all channels from the database
return self._db.get_podcast_statistics()
def get_all_episodes(self):
"""Returns a generator that yields every episode"""
return Model.sort_episodes_by_pubdate((e for c in self.channels
for e in c.get_all_episodes()), True)
def save(self):
pass
class PodcastListModel(Gtk.ListStore):
C_URL, C_TITLE, C_DESCRIPTION, C_PILL, C_CHANNEL, \
C_COVER, C_ERROR, C_PILL_VISIBLE, \
C_VIEW_SHOW_UNDELETED, C_VIEW_SHOW_DOWNLOADED, \
C_VIEW_SHOW_UNPLAYED, C_HAS_EPISODES, C_SEPARATOR, \
C_DOWNLOADS, C_COVER_VISIBLE, C_SECTION = list(range(16))
SEARCH_COLUMNS = (C_TITLE, C_DESCRIPTION, C_SECTION)
@classmethod
def row_separator_func(cls, model, iter):
return model.get_value(iter, cls.C_SEPARATOR)
def __init__(self, cover_downloader):
Gtk.ListStore.__init__(self, str, str, str, GdkPixbuf.Pixbuf,
object, GdkPixbuf.Pixbuf, str, bool, bool, bool, bool,
bool, bool, int, bool, str)
# Filter to allow hiding some episodes
self._filter = self.filter_new()
self._view_mode = -1
self._search_term = None
self._filter.set_visible_func(self._filter_visible_func)
self._cover_cache = {}
self._max_image_side = 40
self._cover_downloader = cover_downloader
self.ICON_DISABLED = 'gtk-media-pause'
def _filter_visible_func(self, model, iter, misc):
# If searching is active, set visibility based on search text
if self._search_term is not None:
if model.get_value(iter, self.C_CHANNEL) == SectionMarker:
return True
key = self._search_term.lower()
columns = (model.get_value(iter, c) for c in self.SEARCH_COLUMNS)
return any((key in c.lower() for c in columns if c is not None))
if model.get_value(iter, self.C_SEPARATOR):
return True
elif self._view_mode == EpisodeListModel.VIEW_ALL:
return model.get_value(iter, self.C_HAS_EPISODES)
elif self._view_mode == EpisodeListModel.VIEW_UNDELETED:
return model.get_value(iter, self.C_VIEW_SHOW_UNDELETED)
elif self._view_mode == EpisodeListModel.VIEW_DOWNLOADED:
return model.get_value(iter, self.C_VIEW_SHOW_DOWNLOADED)
elif self._view_mode == EpisodeListModel.VIEW_UNPLAYED:
return model.get_value(iter, self.C_VIEW_SHOW_UNPLAYED)
return True
def get_filtered_model(self):
"""Returns a filtered version of this episode model
The filtered version should be displayed in the UI,
as this model can have some filters set that should
be reflected in the UI.
"""
return self._filter
def set_view_mode(self, new_mode):
"""Sets a new view mode for this model
After setting the view mode, the filtered model
might be updated to reflect the new mode."""
if self._view_mode != new_mode:
self._view_mode = new_mode
self._filter.refilter()
def get_view_mode(self):
"""Returns the currently-set view mode"""
return self._view_mode
def set_search_term(self, new_term):
if self._search_term != new_term:
self._search_term = new_term
self._filter.refilter()
def get_search_term(self):
return self._search_term
def enable_separators(self, channeltree):
channeltree.set_row_separator_func(self._show_row_separator)
def _show_row_separator(self, model, iter):
return model.get_value(iter, self.C_SEPARATOR)
def _resize_pixbuf_keep_ratio(self, url, pixbuf):
"""
Resizes a GTK Pixbuf but keeps its aspect ratio.
Returns None if the pixbuf does not need to be
resized or the newly resized pixbuf if it does.
"""
changed = False
result = None
if url in self._cover_cache:
return self._cover_cache[url]
# Resize if too wide
if pixbuf.get_width() > self._max_image_side:
f = float(self._max_image_side) / pixbuf.get_width()
(width, height) = (int(pixbuf.get_width() * f), int(pixbuf.get_height() * f))
pixbuf = pixbuf.scale_simple(width, height, GdkPixbuf.InterpType.BILINEAR)
changed = True
# Resize if too high
if pixbuf.get_height() > self._max_image_side:
f = float(self._max_image_side) / pixbuf.get_height()
(width, height) = (int(pixbuf.get_width() * f), int(pixbuf.get_height() * f))
pixbuf = pixbuf.scale_simple(width, height, GdkPixbuf.InterpType.BILINEAR)
changed = True
if changed:
self._cover_cache[url] = pixbuf
result = pixbuf
return result
def _resize_pixbuf(self, url, pixbuf):
if pixbuf is None:
return None
return self._resize_pixbuf_keep_ratio(url, pixbuf) or pixbuf
def _overlay_pixbuf(self, pixbuf, icon):
try:
icon_theme = Gtk.IconTheme.get_default()
emblem = icon_theme.load_icon(icon, self._max_image_side / 2, 0)
(width, height) = (emblem.get_width(), emblem.get_height())
xpos = pixbuf.get_width() - width
ypos = pixbuf.get_height() - height
if ypos < 0:
# need to resize overlay for none standard icon size
emblem = icon_theme.load_icon(icon, pixbuf.get_height() - 1, 0)
(width, height) = (emblem.get_width(), emblem.get_height())
xpos = pixbuf.get_width() - width
ypos = pixbuf.get_height() - height
emblem.composite(pixbuf, xpos, ypos, width, height, xpos, ypos, 1, 1, GdkPixbuf.InterpType.BILINEAR, 255)
except:
pass
return pixbuf
def _get_cached_thumb(self, channel):
if channel.cover_thumb is None:
return None
try:
loader = GdkPixbuf.PixbufLoader()
loader.write(channel.cover_thumb)
loader.close()
return loader.get_pixbuf()
except Exception as e:
logger.warn('Could not load cached cover art for %s', channel.url, exc_info=True)
channel.cover_thumb = None
channel.save()
return None
def _save_cached_thumb(self, channel, pixbuf):
bufs = []
def save_callback(buf, length, user_data):
user_data.append(buf)
return True
pixbuf.save_to_callbackv(save_callback, bufs, 'png', [None], [])
channel.cover_thumb = bytes(b''.join(bufs))
channel.save()
def _get_cover_image(self, channel, add_overlay=False):
if self._cover_downloader is None:
return None
pixbuf_overlay = self._get_cached_thumb(channel)
if pixbuf_overlay is None:
pixbuf = self._cover_downloader.get_cover(channel, avoid_downloading=True)
pixbuf_overlay = self._resize_pixbuf(channel.url, pixbuf)
self._save_cached_thumb(channel, pixbuf_overlay)
if add_overlay and channel.pause_subscription:
pixbuf_overlay = self._overlay_pixbuf(pixbuf_overlay, self.ICON_DISABLED)
pixbuf_overlay.saturate_and_pixelate(pixbuf_overlay, 0.0, False)
return pixbuf_overlay
def _get_pill_image(self, channel, count_downloaded, count_unplayed):
if count_unplayed > 0 or count_downloaded > 0:
return draw.draw_pill_pixbuf(str(count_unplayed), str(count_downloaded))
else:
return None
def _format_description(self, channel, total, deleted,
new, downloaded, unplayed):
title_markup = cgi.escape(channel.title)
if not channel.pause_subscription:
description_markup = cgi.escape(util.get_first_line(channel.description) or ' ')
else:
description_markup = cgi.escape(_('Subscription paused'))
d = []
if new:
d.append('<span weight="bold">')
d.append(title_markup)
if new:
d.append('</span>')
if description_markup.strip():
return ''.join(d + ['\n', '<small>', description_markup, '</small>'])
else:
return ''.join(d)
def _format_error(self, channel):
# if channel.parse_error:
# return str(channel.parse_error)
# else:
# return None
return None
def set_channels(self, db, config, channels):
# Clear the model and update the list of podcasts
self.clear()
def channel_to_row(channel, add_overlay=False):
return (channel.url, '', '', None, channel,
self._get_cover_image(channel, add_overlay), '', True,
True, True, True, True, False, 0, True, '')
if config.podcast_list_view_all and channels:
all_episodes = PodcastChannelProxy(db, config, channels)
iter = self.append(channel_to_row(all_episodes))
self.update_by_iter(iter)
# Separator item
if not config.podcast_list_sections:
self.append(('', '', '', None, SeparatorMarker, None, '',
True, True, True, True, True, True, 0, False, ''))
def key_func(pair):
section, podcast = pair
return (section, model.Model.podcast_sort_key(podcast))
if config.podcast_list_sections:
def convert(channels):
for channel in channels:
yield (channel.group_by, channel)
else:
def convert(channels):
for channel in channels:
yield (None, channel)
added_sections = []
old_section = None
for section, channel in sorted(convert(channels), key=key_func):
if old_section != section:
it = self.append(('-', section, '', None, SectionMarker, None,
'', True, True, True, True, True, False, 0, False, section))
added_sections.append(it)
old_section = section
iter = self.append(channel_to_row(channel, True))
self.update_by_iter(iter)
# Update section header stats only after all podcasts
# have been added to the list to get the stats right
for it in added_sections:
self.update_by_iter(it)
def get_filter_path_from_url(self, url):
# Return the path of the filtered model for a given URL
child_path = self.get_path_from_url(url)
if child_path is None:
return None
else:
return self._filter.convert_child_path_to_path(child_path)
def get_path_from_url(self, url):
# Return the tree model path for a given URL
if url is None:
return None
for row in self:
if row[self.C_URL] == url:
return row.path
return None
def update_first_row(self):
# Update the first row in the model (for "all episodes" updates)
self.update_by_iter(self.get_iter_first())
def update_by_urls(self, urls):
# Given a list of URLs, update each matching row
for row in self:
if row[self.C_URL] in urls:
self.update_by_iter(row.iter)
def iter_is_first_row(self, iter):
iter = self._filter.convert_iter_to_child_iter(iter)
path = self.get_path(iter)
return (path == Gtk.TreePath.new_first())
def update_by_filter_iter(self, iter):
self.update_by_iter(self._filter.convert_iter_to_child_iter(iter))
def update_all(self):
for row in self:
self.update_by_iter(row.iter)
def update_sections(self):
for row in self:
if row[self.C_CHANNEL] is SectionMarker:
self.update_by_iter(row.iter)
def update_by_iter(self, iter):
if iter is None:
return
# Given a GtkTreeIter, update volatile information
channel = self.get_value(iter, self.C_CHANNEL)
if channel is SectionMarker:
section = self.get_value(iter, self.C_TITLE)
# This row is a section header - update its visibility flags
channels = [c for c in (row[self.C_CHANNEL] for row in self)
if isinstance(c, GPodcast) and c.section == section]
# Calculate the stats over all podcasts of this section
if len(channels) is 0:
total = deleted = new = downloaded = unplayed = 0
else:
total, deleted, new, downloaded, unplayed = list(map(sum,
list(zip(*[c.get_statistics() for c in channels]))))
# We could customized the section header here with the list
# of channels and their stats (i.e. add some "new" indicator)
description = '<span size="16000"> </span><b>%s</b>' % (
cgi.escape(section))
self.set(iter,
self.C_DESCRIPTION, description,
self.C_SECTION, section,
self.C_VIEW_SHOW_UNDELETED, total - deleted > 0,
self.C_VIEW_SHOW_DOWNLOADED, downloaded + new > 0,
self.C_VIEW_SHOW_UNPLAYED, unplayed + new > 0)
if (not isinstance(channel, GPodcast) and
not isinstance(channel, PodcastChannelProxy)):
return
total, deleted, new, downloaded, unplayed = channel.get_statistics()
description = self._format_description(channel, total, deleted, new,
downloaded, unplayed)
pill_image = self._get_pill_image(channel, downloaded, unplayed)
self.set(iter,
self.C_TITLE, channel.title,
self.C_DESCRIPTION, description,
self.C_SECTION, channel.section,
self.C_ERROR, self._format_error(channel),
self.C_PILL, pill_image,
self.C_PILL_VISIBLE, pill_image is not None,
self.C_VIEW_SHOW_UNDELETED, total - deleted > 0,
self.C_VIEW_SHOW_DOWNLOADED, downloaded + new > 0,
self.C_VIEW_SHOW_UNPLAYED, unplayed + new > 0,
self.C_HAS_EPISODES, total > 0,
self.C_DOWNLOADS, downloaded)
def clear_cover_cache(self, podcast_url):
if podcast_url in self._cover_cache:
logger.info('Clearing cover from cache: %s', podcast_url)
del self._cover_cache[podcast_url]
def add_cover_by_channel(self, channel, pixbuf):
if pixbuf is None:
return
# Remove older images from cache
self.clear_cover_cache(channel.url)
# Resize and add the new cover image
pixbuf = self._resize_pixbuf(channel.url, pixbuf)
self._save_cached_thumb(channel, pixbuf)
if channel.pause_subscription:
pixbuf = self._overlay_pixbuf(pixbuf, self.ICON_DISABLED)
pixbuf.saturate_and_pixelate(pixbuf, 0.0, False)
for row in self:
if row[self.C_URL] == channel.url:
row[self.C_COVER] = pixbuf
break