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#!/usr/bin/env python
#
# Demo RSS client using tracker as backend
# Copyright (C) 2009, Nokia <ivan.frade@nokia.com>
#
# 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 Street, Fifth Floor, Boston, MA
# 02110-1301, USA.
#
import gtk
import gobject
import pango
import dbus
from dbus.mainloop.glib import DBusGMainLoop
from tracker_backend import TrackerRSS
try:
from zeitgeist_backend import ZeitgeistBackend
zg = ZeitgeistBackend ()
except ImportError:
class MockZeitgeistBackend:
def view_event (self, uri):
pass
def get_rss_by_usage (self):
return []
def clean_events (self):
pass
zg = MockZeitgeistBackend ()
# uri, title, date, isread, pango.Weight
# Be careful, we use this also in the code for the zg_model!
posts_model = gtk.ListStore (str, str, str, bool, int)
# uri, title, entries, enabled
channels_model = gtk.ListStore (str, str, str, bool)
ui = gtk.Builder ()
ui.add_from_file ("./rss_viewer.ui")
channels_treeview = None
sources_dialog = None
# Convenience defines
FALSE = "false"
TRUE = "true"
NORMAL = pango.WEIGHT_NORMAL
BOLD = pango.WEIGHT_BOLD
tracker = TrackerRSS ()
def populate_initial_posts ():
results = tracker.get_post_sorted_by_date (10)
for result in results:
if (result[3] == FALSE):
row = (result[0], result[1], result[2], False, BOLD)
else:
row = (result[0], result[1], result[2], True, NORMAL)
posts_model.append (row)
def create_posts_tree_view ():
for treeview in [ui.get_object ("posts_treeview"),
ui.get_object ("posts_treeview_by_usage")]:
column_title = gtk.TreeViewColumn ("Title",
gtk.CellRendererText (),
text=1, weight=4)
column_date = gtk.TreeViewColumn ("Date",
gtk.CellRendererText (),
text=2)
treeview.append_column (column_title)
treeview.append_column (column_date)
treeview.connect ("cursor-changed", cursor_changed_cb)
def create_channels_tree_view ():
treeview = gtk.TreeView ()
toggle = gtk.CellRendererToggle ()
toggle.set_property ("activatable", True)
def toggled (widget, path):
it = channels_model.get_iter_from_string (path)
uri, old_value = channels_model.get (it, 0, 3)
if (old_value == True):
tracker.mark_as_invisible (uri)
else:
tracker.mark_as_visible (uri)
channels_model.set (it, 3, not old_value)
toggle.connect ("toggled",
toggled)
column_enable = gtk.TreeViewColumn ("Enabled",
toggle,
active=3)
column_title = gtk.TreeViewColumn ("Title",
gtk.CellRendererText (),
text=1)
column_entries = gtk.TreeViewColumn ("Entries",
gtk.CellRendererText (),
text=2)
treeview.append_column (column_enable)
treeview.append_column (column_title)
treeview.append_column (column_entries)
return treeview
def toggle_row_foreach (treemodel, path, iter):
uri, readed, text = treemodel.get (iter, 0, 3 ,1)
if (readed):
#Mark as unread
treemodel.set_value (iter, 3, False)
treemodel.set_value (iter, 4, BOLD)
tracker.set_is_read (uri, False)
else:
#Mark as readed
treemodel.set_value (iter, 3, True)
treemodel.set_value (iter, 4, NORMAL)
tracker.set_is_read (uri, True)
def clicked_toggle_cb (widget):
selected = ui.get_object ("posts_treeview").get_selection ()
if (selected.count_selected_rows () == 0):
return
selected.selected_foreach (toggle_row_foreach)
def cursor_changed_cb (tv):
selection = tv.get_selection ()
if (selection.count_selected_rows () > 0):
model, it = selection.get_selected ()
uri = model.get_value (it, 0)
text = tracker.get_text_for_uri (uri)
tv = ui.get_object ("text_view")
tv.get_buffer ().set_text (text)
zg.view_event (uri)
def clicked_sources_cb (widget, dialog):
# Dont do this all the time!
if (len (channels_model) == 0):
feeds = tracker.get_all_subscribed_feeds ()
for (uri, name, value, visible) in feeds:
channels_model.append ((uri, name, value, visible))
channels_treeview.show_all ()
retval = dialog.run ()
if (retval == gtk.RESPONSE_ACCEPT):
pass
dialog.hide ()
def notification_addition (added_uris):
print "%d add: %s" % (len(added_uris), [str(n) for n in added_uris])
for uri in added_uris:
details = tracker.get_info_for_entry (uri)
if (details):
if (details[2]):
model_row = (uri, details[0], details[1],
details[2], NORMAL)
else:
model_row = (uri, details[0], details[1],
details[2], BOLD)
posts_model.prepend (model_row)
def remove_uris (model, path, iter, user_data):
uri = model.get (iter, 0)
if (uri[0] in user_data):
model.remove (iter)
return True
def notification_removal (removed_uris):
print "%d remove: %s" % (len(removed_uris), [str(n) for n in removed_uris])
posts_model.foreach (remove_uris, removed_uris)
def update_uri (model, path, iter, user_data):
updated_uri = user_data [0]
uri = model.get (iter, 0)
if (uri[0] == updated_uri):
model.set(iter,
1, user_data[1],
2, user_data[2],
3, user_data[3],
4, user_data[4])
return True
def change_tab_cb (notebook, page, page_num):
print "Change to tab", page_num
if (page_num == 1):
uris = zg.get_rss_by_usage ()
zg_model = gtk.ListStore (str, str, str, bool, int)
for uri in uris:
for row in posts_model:
print uri, map (str,row)
if row[0] == uri :
print "Add to the model!"
zg_model.append (row)
ui.get_object ("posts_treeview_by_usage").set_model (zg_model)
else:
ui.get_object ("posts_treeview").set_model (posts_model)
def notification_update (updated_uris, update_predicates):
print "%d update: %s" % (len(updated_uris), [str(n) for n in updated_uris])
for uri in updated_uris:
details = tracker.get_info_for_entry (uri)
if (details):
if (details[2]):
model_row = (uri, details[0], details[1],
details[2], NORMAL)
else:
model_row = (uri, details[0], details[1],
details[2], BOLD)
posts_model.foreach (update_uri, model_row)
if __name__ == "__main__":
dbus_loop = DBusGMainLoop(set_as_default=True)
bus = dbus.SessionBus (dbus_loop)
bus.add_signal_receiver (notification_addition,
signal_name="SubjectsAdded",
dbus_interface="org.freedesktop.Tracker3.Resources.Class",
path="/org/freedesktop/Tracker3/Resources/Classes/mfo/FeedMessage")
bus.add_signal_receiver (notification_removal,
signal_name="SubjectsRemoved",
dbus_interface="org.freedesktop.Tracker3.Resources.Class",
path="/org/freedesktop/Tracker3/Resources/Classes/mfo/FeedMessage")
bus.add_signal_receiver (notification_update,
signal_name="SubjectsChanged",
dbus_interface="org.freedesktop.Tracker3.Resources.Class",
path="/org/freedesktop/Tracker3/Resources/Classes/mfo/FeedMessage")
window = ui.get_object ("main_window")
gobject.set_application_name ("Rss/tracker")
create_posts_tree_view ()
ui.get_object("posts_treeview").set_model (posts_model)
channels_treeview = create_channels_tree_view ()
channels_treeview.set_model (channels_model)
dialog = gtk.Dialog ("Sources", window,
gtk.DIALOG_MODAL|gtk.DIALOG_DESTROY_WITH_PARENT,
(gtk.STOCK_CANCEL, gtk.RESPONSE_REJECT,
gtk.STOCK_OK, gtk.RESPONSE_ACCEPT))
dialog.vbox.add (channels_treeview)
ui.get_object ("button_toggle").connect ("clicked", clicked_toggle_cb)
ui.get_object ("notebook1").connect ("switch-page", change_tab_cb)
populate_initial_posts ()
window.show_all ()
def destroy (window):
tracker.flush_to_file ()
gtk.main_quit ()
window.connect ("destroy", destroy)
gtk.main ()
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