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# IVLE - Informatics Virtual Learning Environment
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# Copyright (C) 2007-2009 The University of Melbourne
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 2 of the License, or
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# (at your option) any later version.
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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# You should have received a copy of the GNU General Public License
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# along with this program; if not, write to the Free Software
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# Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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# Author: Matt Giuca, Will Grant
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class BasePlugin(object):
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Base class for all Plugin classes.
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class ViewPlugin(BasePlugin):
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"""Marker class for plugins that provide views.
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View plugins have three main types of registration:
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- forward_routes: A list of traversals from objects to their
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descendants. The discriminator is the source class and a list of zero
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or more intermediate path segments. An optional argument count may be
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given -- arguments will be taken from the path after the intermediate
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segments. The specified callable will be given the source object and
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any arguments, and should return the target object.
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- reverse_routes: A list of traversals from objects to their parents.
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The discriminator is just the child class. The provided callable must
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return a tuple of (parent_object, ('intermediate', path', 'segments')).
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- views: A list of named views for objects. The discriminator is the
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context object class, view name, and an optional view set. An optional
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(possibly infinite) argument count may again be given. The arguments
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values will be taken from the path after the view name. The callable
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should take the request object, target object and subpath, and return
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See ivle.dispatch.generate_publisher for the registry code.
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View plugins may also have a 'help' property, which should contain a dict
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of dicts and help file names. This dict is then used to generate the
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appropriate entries in the help system.
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Tabs can also be defined by view plugins. To define tabs, provide a 'tabs'
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property containing 6-tuples of (name, title, desc, icon, path, weight).
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The icon should be relative to the plugin's media directory, and the path
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should be relative to the root. The weight is used for ordering; larger
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weights are further right.
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class PublicViewPlugin(BasePlugin):
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"""Marker class for plugins that provide public mode views.
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Public view plugins can specify the same 'urls' property as normal view
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plugins, but they are added to the public mode publisher instead.
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class OverlayPlugin(BasePlugin):
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"""Marker class for plugins which provide overlays.
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Overlay plugins provide mini-views which can be displayed on top of other
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views. The canonical example of a plugin of this type is the Console plugin.
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class CookiePlugin(BasePlugin):
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"""Marker class for plugins which provide cookies.
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Cookie plugins provide a 'cookies' dict mapping names to generation
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functions. The function should return the data to store in the cookie on
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login. If the function is None, the cookie is not created on login, just
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class MediaPlugin(BasePlugin):
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"""Marker class for plugins which provide media files.
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Media plugins provide a 'media' attribute, which is a string pointing to a
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subdirectory that contains media files to be served statically.