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# Miro - an RSS based video player application
# Copyright (C) 2005-2010 Participatory Culture Foundation
#
# 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; either version 2 of the License, or
# (at your option) any later version.
#
# 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 St, Fifth Floor, Boston, MA 02110-1301 USA
#
# In addition, as a special exception, the copyright holders give
# permission to link the code of portions of this program with the OpenSSL
# library.
#
# You must obey the GNU General Public License in all respects for all of
# the code used other than OpenSSL. If you modify file(s) with this
# exception, you may extend this exception to your version of the file(s),
# but you are not obligated to do so. If you do not wish to do so, delete
# this exception statement from your version. If you delete this exception
# statement from all source files in the program, then also delete it here.
"""``miro.folder`` -- Holds ``Folder`` class and related things.
"""
from miro import feed
from miro import playlist
from miro import util
from miro.database import DDBObject, ObjectNotFoundError
from miro.databasehelper import make_simple_get_set
class FolderBase(DDBObject):
"""Base class for ChannelFolder and Playlist folder classes."""
def setup_new(self, title):
self.title = title
self.expanded = True
get_title, set_title = make_simple_get_set('title')
def getExpanded(self):
self.confirm_db_thread()
return self.expanded
def setExpanded(self, newExpanded):
self.confirm_db_thread()
self.expanded = newExpanded
self.signal_change()
for child in self.getChildrenView():
child.signal_change(needs_save=False)
def remove(self, moveItemsTo=None):
"""Remove this folder and children.
"""
raise NotImplementedError()
# get_folder and set_folder are here so that channels/playlists and folders
# have a consistent API. They don't do much since we don't allow nested
# folders.
def get_folder(self):
return None
def set_folder(self, newFolder, signal_items=False):
if newFolder is not None:
raise TypeError("Nested folders not allowed")
def getChildrenView(self):
"""Return the children of this folder."""
raise NotImplementedError()
class ChannelFolder(FolderBase):
def setup_new(self, title, section=u'video'):
self.section = section
FolderBase.setup_new(self, title)
def remove(self, moveItemsTo=None):
children = list(self.getChildrenView())
for child in children:
if child.is_watched_folder():
child.setVisible(False) # just hide watched folders
child.set_folder(None)
else:
child.remove(moveItemsTo)
DDBObject.remove(self)
@classmethod
def video_view(cls):
return cls.make_view("section='video'")
@classmethod
def audio_view(cls):
return cls.make_view("section='audio'")
@classmethod
def get_by_title(cls, title):
return cls.make_view('title=?', (title,)).get_singleton()
def getChildrenView(self):
return feed.Feed.folder_view(self.id)
def hasDownloadedItems(self):
for feed in self.getChildrenView():
if feed.hasDownloadedItems():
return True
return False
def hasDownloadingItems(self):
for feed in self.getChildrenView():
if feed.hasDownloadingItems():
return True
return False
# Returns string with number of unwatched videos in feed
def num_unwatched(self):
unwatched = 0
for child in self.getChildrenView():
unwatched += child.num_unwatched()
return unwatched
# Returns string with number of available videos in feed
def num_available(self):
available = 0
for child in self.getChildrenView():
available += child.num_available()
return available
def mark_as_viewed(self):
for child in self.getChildrenView():
child.mark_as_viewed()
class PlaylistFolderItemMap(playlist.PlaylistItemMap):
"""Single row in the map that associates playlist folders with their
child items.
"""
def setup_new(self, playlist_id, item_id):
playlist.PlaylistItemMap.setup_new(self, playlist_id, item_id)
self.count = 1
def inc_count(self):
self.count += 1
self.signal_change()
def dec_count(self):
if self.count > 1:
self.count -= 1
self.signal_change()
else:
self.remove()
@classmethod
def add_item_id(cls, playlist_id, item_id):
view = cls.make_view('playlist_id=? AND item_id=?',
(playlist_id, item_id))
try:
map = view.get_singleton()
map.inc_count()
except ObjectNotFoundError:
cls(playlist_id, item_id)
@classmethod
def remove_item_id(cls, playlist_id, item_id):
view = cls.make_view('playlist_id=? AND item_id=?',
(playlist_id, item_id))
map = view.get_singleton()
map.dec_count()
class PlaylistFolder(FolderBase, playlist.PlaylistMixin):
MapClass = PlaylistFolderItemMap
def remove(self, moveItemsTo=None):
children = list(self.getChildrenView())
for child in children:
child.remove(moveItemsTo)
DDBObject.remove(self)
def getChildrenView(self):
return playlist.SavedPlaylist.folder_view(self.id)
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