1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
|
# Copyright (C) 2007-2009 by the Free Software Foundation, Inc.
#
# This file is part of GNU Mailman.
#
# GNU Mailman 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, either version 3 of the License, or (at your option)
# any later version.
#
# GNU Mailman 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
# GNU Mailman. If not, see <http://www.gnu.org/licenses/>.
"""Style manager."""
from __future__ import absolute_import, unicode_literals
__metaclass__ = type
__all__ = [
'StyleManager',
]
import sys
from operator import attrgetter
from zope.interface import implements
from zope.interface.verify import verifyObject
from mailman.interfaces.styles import (
DuplicateStyleError, IStyle, IStyleManager)
class StyleManager:
"""The built-in style manager."""
implements(IStyleManager)
def __init__(self):
"""Install all styles from the configuration files."""
self._styles = {}
def populate(self):
self._styles.clear()
# Avoid circular imports.
from mailman.config import config
# Install all the styles described by the configuration files.
for section in config.style_configs:
class_path = section['class']
module_name, class_name = class_path.rsplit('.', 1)
__import__(module_name)
style = getattr(sys.modules[module_name], class_name)()
assert section.name.startswith('style'), (
'Bad style section name: %s' % section.name)
style.name = section.name[6:]
style.priority = int(section.priority)
self.register(style)
def get(self, name):
"""See `IStyleManager`."""
return self._styles.get(name)
def lookup(self, mailing_list):
"""See `IStyleManager`."""
matched_styles = []
for style in self.styles:
style.match(mailing_list, matched_styles)
for style in matched_styles:
yield style
@property
def styles(self):
"""See `IStyleManager`."""
for style in sorted(self._styles.values(),
key=attrgetter('priority'),
reverse=True):
yield style
def register(self, style):
"""See `IStyleManager`."""
verifyObject(IStyle, style)
if style.name in self._styles:
raise DuplicateStyleError(style.name)
self._styles[style.name] = style
def unregister(self, style):
"""See `IStyleManager`."""
# Let KeyErrors percolate up.
del self._styles[style.name]
|
