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#!/usr/bin/env python
#----------------------------------------------------
# Author: ZaB|SHC|@irc.freenode.net
#
# License: Beerware
#----------------------------------------------------
"""
shutdown script for Openbox with configurable buttons and actions
needs pygtk for gui
"""
# standard stuff
import os
import re
import sys
# gui modules
try:
import gtk
import pygtk
except ImportError:
sys.stderr.write('pygtk is needed for using this script')
sys.exit(1)
if sys.version_info < (2, 5, 0):
sys.stderr.write('Python 2.5.0 or higher is needed')
sys.exit(1)
# a simple parser for the configuration
class ConfigParser(dict):
"""
ConfigParser(file) -> dict
reads file and creates dict object containing corresponding
configuration
"""
def __init__(self, filename):
self._section_match_regexp = re.compile(r'\[(\w+)\]')
self._key_val_match_regexp = re.compile(r'\s*=\s*')
self._comment_remov_regexp = re.compile(r'#.*')
try:
config_handle = open(filename, 'r')
except IOError:
sys.stderr.write('Could not read %s. Aborting ...\n' % filename)
sys.exit(1)
linecount = 0
for line in config_handle.readlines():
linecount += 1
line = self._comment_remov_regexp.sub('', line.strip())
if len(line) == 0:
continue
if self._section_match_regexp.match(line):
section = self._section_match_regexp.match(line).groups()[0]
self[section] = {}
continue
try:
(key, value) = self._key_val_match_regexp.split(line)
except ValueError:
sys.stderr.write('Syntax error in line %d of %s.' % (linecount,
filename))
sys.exit(1)
if key == 'command' and not key in self[section]:
self[section][key] = [value]
continue
if key in self[section] and key == 'command':
self[section][key].append(value)
else:
self[section][key] = value
def check(self):
"""
checks if configuration is complete
"""
for section in self:
for needed_key in ['command', 'image', 'info_text', 'label']:
if not needed_key in self[section]:
sys.stderr.write('Missing option %s in %s.' % (needed_key, section))
sys.exit(1)
# the main class for this script
class OpenBoxShutdown(object):
"""
main class for this script
reads configuration and displays buttons as requested
on click, the specified actions are made
"""
def __init__(self, basedir):
self._config = ConfigParser(os.path.join(basedir, 'openbox-shutdown.conf'))
self._config.check()
# button box on top for the action buttons
button_box = gtk.HButtonBox()
for key in self._config:
button_box.pack_start(self._create_button(key,
self._config[key]['label'],
self._config[key]['info_text'],
self._config[key]['image']))
button_box.show()
# create cancel button
cancel_button = gtk.Button(stock = gtk.STOCK_CANCEL)
cancel_button.connect('clicked', self._click_callback, 'cancel')
cancel_button.show()
# label widget for small hints
self._label = gtk.Label()
self._label.show()
# frame widget to contain label
frame = gtk.Frame()
frame.set_shadow_type(gtk.SHADOW_NONE)
frame.add(self._label)
frame.show()
# area containing hints and cancel button
action_area = gtk.HBox()
action_area.pack_end(cancel_button, expand=False)
action_area.pack_end(frame)
action_area.show()
# box containing button box and action area
vbox = gtk.VBox()
vbox.pack_start(button_box)
vbox.pack_end(action_area)
vbox.show()
# the main window with all widgets
# always on top and on all desktops
window = gtk.Window()
window.set_position('center')
window.set_decorated(False)
window.stick()
window.set_keep_above(True)
window.set_skip_pager_hint(True)
window.set_skip_taskbar_hint(True)
window.add(vbox)
window.show()
# give control to gtk
gtk.main()
def _click_callback(self, event, action):
"""
_click_callback(event, action)
executes commands on button click
"""
gtk.main_quit()
if action == 'cancel':
sys.exit(0)
for command in self._config[action]['command']:
os.system(command)
def _create_button(self, key, label_text, info_text, image_file):
"""
_create_button(key, label, info, image) -> button
creates a button widget with key (used for handling actions),
a label for the button, a small text as hint and an image
"""
button = gtk.Button()
if label_text != 'None':
button.set_label(label_text)
if image_file != 'None':
button.set_image(self._create_image(image_file))
button.set_image_position(gtk.POS_TOP)
button.connect('clicked', self._click_callback, key)
button.connect('leave', lambda event: self._label.set_text(''))
button.connect('enter', self._set_label, info_text)
button.show()
return button
def _create_image(self, image_file):
"""
_create_image(image) -> image
creates an image widget from the specified file
"""
image = gtk.Image()
image.set_from_file(image_file)
return image
def _set_label(self, event, info_text):
"""
_set_label(event, info_text)
set label on entering the widget
"""
if info_text != 'None':
self._label.set_markup('<span size="smaller">%s</span>' % info_text)
# start the script if called standalone
if __name__ == '__main__':
# get the real path for the configuration file
conf_path = os.path.realpath(os.path.dirname(os.readlink(__file__))) \
if os.path.islink(__file__) \
else os.path.realpath(os.path.dirname(__file__))
shutdown = OpenBoxShutdown(conf_path)
|
