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comparison bitsyblog/settings.py @ 0:e3823be6a423

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initial commit of bitsyblog, from https://svn.openplans.org/svn/standalone/bitsyblog/trunk/
author k0s <k0scist@gmail.com>
date Sat, 12 Sep 2009 16:06:57 -0400
parents
children e54a6405a496
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-1:000000000000 0:e3823be6a423
1 """user settings / preferences"""
2
3 import parser # dateutils.parser with mods to retain strftime format
4 import urllib2
5 import utils
6
7 class InvalidSettingError(Exception):
8 """error when trying to validate a setting"""
9
10 class Setting(object):
11 def __init__(self, name, value=None):
12 self.name = name
13 self.value = value
14 self.error_message = 'Invalid value for %s' % name
15
16 def validator(self, value):
17 return True
18
19 def set(self, value):
20 if not self.validator(value):
21 raise InvalidSettingError(self.error_message)
22 self.value = value
23
24 class DateFormat(Setting):
25 def __init__(self):
26 Setting.__init__(self, 'Date format')
27
28 def set(self, format):
29 value = parser.parser()._parse(format)
30 if value:
31 self.value = value.format
32 else:
33 raise InvalidSettingError('unrecognized date format: %s' % format)
34
35
36 class CSSFile(Setting):
37 def __init__(self):
38 Setting.__init__(self, 'CSS file')
39
40 def set(self, value):
41 if not hasattr(value, 'file'):
42 return True # blank set: don't do anything
43 css = value.file.read()
44 try:
45 validcss = utils.validate_css(css)
46 except urllib2.URLError:
47 raise InvalidSettingError('Could not validate CSS (sorry!)')
48 if not validcss:
49 raise InvalidSettingError('%s is not valid css' % filename)
50 filename = value.filename
51 if not filename.endswith('.css'):
52 filename = '%s.css' % filename
53 self.value = dict(filename=filename, css=css)
54
55 user = [ DateFormat(),
56 Setting('Subject'),
57 Setting('Friends'),
58 Setting('Stylesheet'),
59 ]
60
61 form = user[:]
62 form += [ CSSFile() ]