# Copyright (C) 2007 - Micah Bucy <eternalsword@gmail.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, 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.

### Initialization ###

plugin_name = _("Torrent Pieces")
plugin_author = "Micah Bucy"
plugin_version = "0.1"
plugin_description = _("""
Adds a pieces tab which gives piece by piece progress for a torrent.
Each piece is represented by a small progress bar.

Pieces currently downloading show up as partially filled progress bars,
but this does not represent percentage done.  

More information is provided as a tooltip for each piece.
For currently downloading pieces, the tooltip contains the number
of blocks finished as well as the peer speed for that piece.

When the plugin initializes, such as when enabling the plugin or
when a different torrent is selected, the cpu will spike.  This is normal,
as initialization must get information on every piece from libtorrent,
and the cpu will normalize once all of the information is retrieved.""")

def deluge_init(deluge_path):
    global path
    path = deluge_path

def enable(core, interface):
    global path
    return TorrentPieces(path, core, interface)

### The Plugin ###
import deluge
import gtk
from TorrentPieces.tab_pieces import PiecesManager

class TorrentPieces:

    def __init__(self, path, core, interface):
        print "Loading TorrentPieces plugin..."
        self.manager = core
        self.parent = interface
        self.viewport = gtk.Viewport()
        self.scrolledWindow = gtk.ScrolledWindow()
        self.scrolledWindow.add(self.viewport)
        self.scrolledWindow.set_policy(gtk.POLICY_AUTOMATIC, gtk.POLICY_AUTOMATIC)

        self.topWidget = self.scrolledWindow

        self.parentNotebook = self.parent.notebook

        self.parentNotebook.append_page(self.topWidget, gtk.Label(_("Pieces")))
        self.viewport.show()
        self.scrolledWindow.show()
        self.tab_pieces = PiecesManager(self.viewport, self.manager)

    def unload(self):
        self.manager.disconnect_event(self.manager.constants['EVENT_PIECE_FINISHED'], self.tab_pieces.handle_event)
        self.manager.disconnect_event(self.manager.constants['EVENT_BLOCK_FINISHED'], self.tab_pieces.handle_event)
        self.manager.disconnect_event(self.manager.constants['EVENT_BLOCK_DOWNLOADING'], self.tab_pieces.handle_event)
        self.tab_pieces.clear_pieces_store()
        numPages = self.parentNotebook.get_n_pages()
        for page in xrange(numPages):
            if self.parentNotebook.get_nth_page(page) == self.topWidget:
                self.parentNotebook.remove_page(page)
                break

    def update(self):
        unique_id = self.parent.get_selected_torrent()
        # If no torrents added or more than one torrent selected
        if unique_id is None:
            self.tab_pieces.clear_pieces_store()
            return
        if unique_id != self.tab_pieces.unique_id:
            self.manager.disconnect_event(self.manager.constants['EVENT_PIECE_FINISHED'], self.tab_pieces.handle_event)
            self.manager.disconnect_event(self.manager.constants['EVENT_BLOCK_FINISHED'], self.tab_pieces.handle_event)
            self.manager.disconnect_event(self.manager.constants['EVENT_BLOCK_DOWNLOADING'], self.tab_pieces.handle_event)
            self.tab_pieces.clear_pieces_store()
            self.tab_pieces.set_unique_id(unique_id)
            self.tab_pieces.prepare_pieces_store()
            self.manager.connect_event(self.manager.constants['EVENT_PIECE_FINISHED'], self.tab_pieces.handle_event)
            self.manager.connect_event(self.manager.constants['EVENT_BLOCK_FINISHED'], self.tab_pieces.handle_event)
            self.manager.connect_event(self.manager.constants['EVENT_BLOCK_DOWNLOADING'], self.tab_pieces.handle_event)