|
1294.2.88
by William Grant
Add a breadcrumb generator (indexes plugins on what breadcrumbs they have). |
1 |
# IVLE - Informatics Virtual Learning Environment
|
2 |
# Copyright (C) 2007-2009 The University of Melbourne
|
|
3 |
#
|
|
4 |
# This program is free software; you can redistribute it and/or modify
|
|
5 |
# it under the terms of the GNU General Public License as published by
|
|
6 |
# the Free Software Foundation; either version 2 of the License, or
|
|
7 |
# (at your option) any later version.
|
|
8 |
#
|
|
9 |
# This program is distributed in the hope that it will be useful,
|
|
10 |
# but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
11 |
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
12 |
# GNU General Public License for more details.
|
|
13 |
#
|
|
14 |
# You should have received a copy of the GNU General Public License
|
|
15 |
# along with this program; if not, write to the Free Software
|
|
16 |
# Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
|
|
17 |
||
18 |
class Breadcrumber(object): |
|
19 |
def __init__(self, req): |
|
20 |
self.req = req |
|
21 |
self.index = {} |
|
22 |
||
23 |
for plugin in req.config.plugins.values(): |
|
24 |
if hasattr(plugin, 'breadcrumbs'): |
|
25 |
for cls in plugin.breadcrumbs: |
|
26 |
assert cls not in self.index |
|
27 |
self.index[cls] = plugin.breadcrumbs[cls] |
|
28 |
||
29 |
def crumb(self, obj): |
|
30 |
if type(obj) not in self.index: |
|
31 |
return None |
|
32 |
return self.index[type(obj)](self.req, obj) |