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# -*- Mode: Python; coding: utf-8; indent-tabs-mode: nil; tab-width: 4 -*-
### BEGIN LICENSE
# Copyright (C) 2012 David Planella <david.planella@ubuntu.com>
# 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 warranties of
# MERCHANTABILITY, SATISFACTORY QUALITY, 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, see <http://www.gnu.org/licenses/>.
### END LICENSE
from qreator_lib.helpers import get_media_file
class DataformatsMount(type):
""" http://martyalchin.com/2008/jan/10/simple-plugin-framework/"""
def __init__(cls, name, bases, attrs): # pylint: disable=W0231,W0613
if not hasattr(cls, 'dataformats'):
# This branch only executes when processing the mount
# point itself. So, since this is a new dataformat type,
# not an implementation, this class shouldn't be
# registered as a plugin. Instead, it sets up a list where
# dataformats can be registered later.
cls.dataformats = []
else:
# This must be a dataformat implementation, which should
# be registered. Simply appending it to the list is all
# that's needed to keep track of it later.
cls.dataformats.append(cls)
class QRCodeType(object):
"""This class is the base for QRCode dataformats. It is not used itself.
Classes implementing a dataformat type should provide the following class
variables:
==================== =====================================================
description translateble, very short, used in the GUI
cmdline_option make this unique in Qreator, since it will be used to
icon_name the name of the icon in <qreator>/data/media/, which
should be used for this datatype
==================== =====================================================
Classes implementing a dataformat type should also provide the following
methods:
==================== =====================================================
create_widget This method is called during init to create the
widget for this datatype.
create_code The paramters are data format specific, but the
method should be able to recreate a code from saved
history data.
This method should return a single string to pass
to the general code update function.
==================== =====================================================
"""
__metaclass__ = DataformatsMount
# replace the description, and make it translatable with _("")
description = "DataFormat"
icon_name = "dataformat.png" # replace this in subclass
cmdline_option = "--dataformat" # replace this in subclass
def __init__(self, qr_code_update_func):
self.qr_code_update_func = qr_code_update_func
self.icon_path = get_media_file(self.icon_name)
self.create_widget() # pylint: disable=E1101
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