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# Back In Time
# Copyright (C) 2008-2009 Oprea Dan
#
# 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 os.path
import tools
import types
tools.register_backintime_path( 'common' )
tools.register_backintime_path( 'plugins' )
class Plugin:
def __init__( self ):
return
def init( self, snapshots ):
return True
def is_gui( self ):
return False
def on_process_begins( self ):
return
def on_process_ends( self ):
return
def on_error( self, code, message ):
return
def on_new_snapshot( self, snapshot_id, snapshot_path ):
return
class PluginManager():
def __init__( self ):
self.plugins = []
self.has_gui_plugins_ = False
self.plugins_loaded = False
def load_plugins( self, snapshots, force = False ):
if self.plugins_loaded and not force:
return
self.plugins_loaded = True
self.plugins = []
self.has_gui_plugins_ = False
plugins_path = tools.get_backintime_path( 'plugins' )
for file in os.listdir( plugins_path ):
if file.endswith( '.py' ) and not file.startswith( '__' ):
path = os.path.join( plugins_path, file )
module = __import__( file[ : -3 ] )
module_dict = module.__dict__
for key, value in module_dict.items():
if key.startswith( '__' ):
continue
if type(value) is types.ClassType:
if issubclass( value, Plugin ):
plugin = value()
if plugin.init( snapshots ):
if plugin.is_gui():
self.has_gui_plugins_ = True
self.plugins.insert( 0, plugin )
else:
self.plugins.append( plugin )
def has_gui_plugins( self ):
return self.has_gui_plugins_
def on_process_begins( self ):
for plugin in self.plugins:
plugin.on_process_begins()
def on_process_ends( self ):
for plugin in reversed( self.plugins ):
plugin.on_process_ends()
def on_error( self, code, message = '' ):
for plugin in self.plugins:
plugin.on_error( code, message )
def on_new_snapshot( self, snapshot_id, snapshot_path ):
for plugin in self.plugins:
plugin.on_new_snapshot( snapshot_id, snapshot_path )
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