Advanced error handling in the event that the previous state fails to load

src/deluge.py

@@ -325,6 +325,20 @@ class Manager:
 				except OSError:
 					pass # No file just means it wasn't downloaded, we can continue
 
+	# A function to try and reload a torrent from a previous session. This is
+	# used in the event that Deluge crashes and a blank state is loaded.
+	def add_old_torrent(self, filename, save_dir, compact):
+		if not filename in os.listdir(self.base_dir + "/" + TORRENTS_SUBDIR):
+			raise InvalidTorrentError(_("File was not found") + ": " + filename)
+
+		full_new_name = self.base_dir + "/" + TORRENTS_SUBDIR + "/" + filename
+
+		# Create torrent object
+		new_torrent = torrent_info(full_new_name, save_dir, compact)
+		self.state.torrents.append(new_torrent)
+		
+		return self.sync()
+
 	# A separate function, because people may want to call it from time to time
 	def save_fastresume_data(self):
 		for unique_ID in self.unique_IDs:

src/delugegtk.py

@@ -58,11 +58,12 @@ class DelugeGTK:
 		s = "%s %s"%(dcommon.PROGRAM_NAME, dcommon.PROGRAM_VERSION)
 		try:
 			self.manager = deluge.Manager(p, v, s, dcommon.CONFIG_DIR)
-		except AssertionError:
+		except:
 			# If something goes wrong while restoring the session, then load
 			# a blank state rather than crash and exit
 			self.manager = deluge.Manager(p, v, s, dcommon.CONFIG_DIR, blank_slate=True)
 			self.something_screwed_up = True
+		
 		else: self.something_screwed_up = False
 		self.plugins = delugeplugins.PluginManager(self.manager, self)
 		self.plugins.add_plugin_dir(dcommon.PLUGIN_DIR)
@@ -640,8 +641,22 @@ class DelugeGTK:
 			return False
 		
 		if self.something_screwed_up:
-			dgtk.show_popup_warning(self.window, "For some reason, the previous state could not be loaded, " + \
-				"so a blank state has been loaded for you.")
+			dgtk.show_popup_warning(self.window, 
+				_("For some reason, the previous state could not be loaded, so a blank state has been loaded for you."))
+			restore_torrents = dgtk.show_popup_question(self.window,
+				_("Would you like to attempt to reload the previous session's downloads?"))
+			if restore_torrents:
+				torrent_subdir = self.manager.base_dir + "/" + deluge.TORRENTS_SUBDIR
+				for torrent in os.listdir(torrent_subdir):
+					if torrent.endswith('.torrent'):
+						if self.config.get('use_default_dir', bool, default=False):
+							path = self.config.get('default_download_path', default=os.path.expandvars('$HOME'))
+						else:
+							path = dgtk.show_directory_chooser_dialog(self.window, 
+								_("Choose the download directory for") + " " + torrent)
+						if path is not None:
+							unique_id = self.manager.add_old_torrent(torrent, path, self.config.get('use_compact_storage', bool, default=False))
+							self.torrent_model.append(self.get_list_from_unique_id(unique_id))
 			self.something_screwed_up = False
 		
 		# Update Statusbar and Tray Tips

src/dgtk.py

@@ -47,9 +47,29 @@ def show_popup_warning(window, message):
 	warner.run()
 	warner.destroy()
 
+def show_popup_question(window, message):
+	asker = gtk.MessageDialog(parent = window, 
+					flags  = gtk.DIALOG_MODAL | gtk.DIALOG_DESTROY_WITH_PARENT,
+					buttons = gtk.BUTTONS_YES_NO,
+					message_format=message,
+					type=gtk.MESSAGE_QUESTION)
+	result = asker.run()
+	asker.destroy()
+	if result == gtk.RESPONSE_YES:
+		return True
+	elif result == gtk.RESPONSE_NO:
+		return False
+	elif result == gtk.RESPONSE_DELETE_EVENT:
+		return False
+	else:
+		return False
+
+
 ## Browse for .torrent files
-def show_file_open_dialog(parent=None):
-	chooser = gtk.FileChooserDialog(_("Choose a .torrent file"), parent, gtk.FILE_CHOOSER_ACTION_OPEN,
+def show_file_open_dialog(parent=None, title=None):
+	if title is None:
+		title = _("Choose a .torrent file")
+	chooser = gtk.FileChooserDialog(title, parent, gtk.FILE_CHOOSER_ACTION_OPEN,
 			buttons=(gtk.STOCK_CANCEL,gtk.RESPONSE_CANCEL,gtk.STOCK_OPEN,gtk.RESPONSE_OK))
 	
 	f0 = gtk.FileFilter()
@@ -72,8 +92,10 @@ def show_file_open_dialog(parent=None):
 	chooser.destroy()
 	return result
 
-def show_directory_chooser_dialog(parent=None):
-	chooser = gtk.FileChooserDialog(_("Choose a download directory"), parent, gtk.FILE_CHOOSER_ACTION_SELECT_FOLDER,
+def show_directory_chooser_dialog(parent=None, title=None):
+	if title is None:
+		title = _("Choose a download directory")
+	chooser = gtk.FileChooserDialog(title, parent, gtk.FILE_CHOOSER_ACTION_SELECT_FOLDER,
 				buttons=(gtk.STOCK_CANCEL, gtk.RESPONSE_CANCEL, gtk.STOCK_OK, gtk.RESPONSE_OK))
 	chooser.set_icon_from_file(dcommon.get_pixmap("deluge32.png"))
 	chooser.set_property("skip-taskbar-hint", True)