openlp/openlp/core/plugin.py

71 lines
2.3 KiB
Python

# -*- coding: utf-8 -*-
# vim: autoindent shiftwidth=4 expandtab textwidth=80
"""
OpenLP - Open Source Lyrics Projection
Copyright (c) 2008 Raoul Snyman
Portions copyright (c) 2008 Martin Thompson, Tim Bentley,
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; version 2 of the License.
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
"""
class Plugin(object):
"""
Base class for openlp plugins to inherit from.
Basic attributes are:
name: the name that should appear in the plugins list
version: The version number of this iteration of the plugin (just an incrementing integer!)
paint_context: A list of paint contexts?
"""
def __init__(self, name=None, version=None):
"""
This is the constructor for the plugin object. This provides an easy
way for descendent plugins to populate common data.
"""
if name is not None:
self.Name = name
else:
self.Name = 'Plugin'
if version is not None:
self.__version__ = version
# this will be a MediaManagerItem if it needs one
self.MediaManagerItem = None
# this will be a PrefsPage object if it needs one
self.SettingsTab = None
#self.paint_context = None
def save(self, data):
"""
Service item data is passed to this function, which should return a
string which can be written to the service file
"""
pass
def load(self, str):
"""
A string from the service file is passed in. This function parses and
sets up the internals of the plugin
"""
pass
def render(self, screen=None):
"""
Render the screenth screenful of data to self.paint_conext
"""
pass
def __repr__(self):
return '<Plugin %s>' % self.__class__.__name__