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# -*- coding: utf-8 -*-
# vim: ts=4
###
#
# CommieCC is the legal property of J. Félix Ontañón <felixonta@gmail.com>
# Copyright (c) 2009 J. Félix Ontañón
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License version 3 as
# published by the Free Software Foundation
#
# 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
#
###
import sys
import os
import gtk
import exceptions
import glob
_instances = {}
_abstract = []
class Plugin(object):
capabilities = []
name = None
description = None
icon = None
default_enabled = True
def setup(self):
"""called before the plugin is asked to do anything"""
raise NotImplementedError
def teardown(self):
"""called to allow the plugin to free anything"""
raise NotImplementedError
def __repr__(self):
return '<%s %r>' % (
self.__class__.__name__,
self.capabilities
)
_abstract.append(Plugin)
from utils import SlaveUIState
class ListSlavesPlugin(Plugin):
capabilities = ['slaves_getter']
filter_dead = True
get_slaves = lambda: (None, None)
def selected_slaves(self):
return [slave for slave, state in self.get_slaves() if not \
(self.filter_dead and state.status == SlaveUIState.ST_DEAD)]
_abstract.append(ListSlavesPlugin)
class NotifierPlugin(Plugin):
capabilities = ['notify']
notify_func = None
def notify(self, **kwargs):
return self.notify_func(**kwargs)
def action_cb(self, **kwargs):
raise NotImplementedError
_abstract.append(NotifierPlugin)
class UIPlugin(Plugin):
def __init__(self, ui_file, toplevel_widget, extra_objects=[]):
builder = gtk.Builder()
if not builder.add_objects_from_file(ui_file,
[toplevel_widget] + extra_objects):
raise PluginError, 'Cant load %s' % ui_file
builder.connect_signals(self)
self.toplevel_widget = builder.get_object(toplevel_widget)
if not self.toplevel_widget:
raise PluginError, 'Cant find toplevel widget %s' % toplevel_widget
self.builder = builder
_abstract.append(UIPlugin)
class TabPlugin(UIPlugin):
capabilities = ['tab']
_abstract.append(TabPlugin)
class MenuItemsPlugin(UIPlugin):
capabilities = ['menuitems']
separator = True
@property
def menuitems(self):
items = [menuitem for menuitem in self.toplevel_widget]
if self.separator:
sep = gtk.SeparatorMenuItem()
sep.show()
items.insert(0, sep)
return items
_abstract.append(MenuItemsPlugin)
class SubMenuPlugin(UIPlugin):
capabilities = ['submenu']
name = 'submenu'
@property
def submenu(self):
if self.icon:
menu = gtk.ImageMenuItem(self.name)
menu.set_always_show_image (True)
#The defined icon stands for a STOCK_ICON
if self.icon in gtk.stock_list_ids():
menu.set_image(gtk.image_new_from_stock(self.icon,
gtk.ICON_SIZE_MENU))
#Else it stands for a image file
else:
menu.set_image(self.icon)
else:
menu = gtk.MenuItem(self.name)
#FIXME: This raises GtkWarning: gtk_menu_attach_to_widget()
menu.set_submenu(self.toplevel_widget)
menu.show()
return menu
_abstract.append(SubMenuPlugin)
def load_plugins(plugins):
for plugin in [x for x in plugins if not x.startswith('__')]:
__import__(plugin, None, None, [''])
def init_plugin_system(plugin_path):
if not plugin_path in sys.path:
sys.path.insert(0, plugin_path)
load_plugins([os.path.basename(os.path.splitext(x)[0])
for x in glob.glob(os.path.join(plugin_path, '*py'))])
def find_plugins():
subklasses = []
for klass in _abstract:
subklasses += [k for k in klass.__subclasses__() if not k in _abstract]
return set(subklasses)
def get_plugins_by_capability(capability):
result = []
for plugin in find_plugins():
if capability in plugin.capabilities:
if not plugin in _instances:
_instances[plugin] = plugin()
result.append(_instances[plugin])
return result
class PluginError(exceptions.Exception):
def __init__(self, mesg=None, *args):
self.mesg = mesg
self.args = args
def __str__(self):
if self.args:
return self.mesg + repr(self.args)
else:
return self.mesg
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