/usr/lib/python2.7/dist-packages/cssutils/css/cssvariablesrule.py is in python-cssutils 1.0.2-1.
This file is owned by root:root, with mode 0o644.
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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 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 | """CSSVariables implements (and only partly) experimental
`CSS Variables <http://disruptive-innovations.com/zoo/cssvariables/>`_
"""
__all__ = ['CSSVariablesRule']
__docformat__ = 'restructuredtext'
__version__ = '$Id: cssfontfacerule.py 1818 2009-07-30 21:39:00Z cthedot $'
from cssvariablesdeclaration import CSSVariablesDeclaration
import cssrule
import cssutils
import xml.dom
class CSSVariablesRule(cssrule.CSSRule):
"""
The CSSVariablesRule interface represents a @variables rule within a CSS
style sheet. The @variables rule is used to specify variables.
cssutils uses a :class:`~cssutils.css.CSSVariablesDeclaration` to
represent the variables.
Format::
variables
VARIABLES_SYM S* medium [ COMMA S* medium ]* LBRACE S*
variableset* '}' S*
;
for variableset see :class:`cssutils.css.CSSVariablesDeclaration`
**Media are not implemented. Reason is that cssutils is using CSS
variables in a kind of preprocessing and therefor no media information
is available at this stage. For now do not use media!**
Example::
@variables {
CorporateLogoBGColor: #fe8d12;
}
div.logoContainer {
background-color: var(CorporateLogoBGColor);
}
"""
def __init__(self, mediaText=None, variables=None, parentRule=None,
parentStyleSheet=None, readonly=False):
"""
If readonly allows setting of properties in constructor only.
"""
super(CSSVariablesRule, self).__init__(parentRule=parentRule,
parentStyleSheet=parentStyleSheet)
self._atkeyword = u'@variables'
# dummy
self._media = cssutils.stylesheets.MediaList(mediaText,
readonly=readonly)
if variables:
self.variables = variables
else:
self.variables = CSSVariablesDeclaration(parentRule=self)
self._readonly = readonly
def __repr__(self):
return u"cssutils.css.%s(mediaText=%r, variables=%r)" % (
self.__class__.__name__,
self._media.mediaText,
self.variables.cssText)
def __str__(self):
return u"<cssutils.css.%s object mediaText=%r variables=%r valid=%r " \
u"at 0x%x>" % (self.__class__.__name__,
self._media.mediaText,
self.variables.cssText,
self.valid,
id(self))
def _getCssText(self):
"""Return serialized property cssText."""
return cssutils.ser.do_CSSVariablesRule(self)
def _setCssText(self, cssText):
"""
:exceptions:
- :exc:`~xml.dom.SyntaxErr`:
Raised if the specified CSS string value has a syntax error and
is unparsable.
- :exc:`~xml.dom.InvalidModificationErr`:
Raised if the specified CSS string value represents a different
type of rule than the current one.
- :exc:`~xml.dom.HierarchyRequestErr`:
Raised if the rule cannot be inserted at this point in the
style sheet.
- :exc:`~xml.dom.NoModificationAllowedErr`:
Raised if the rule is readonly.
Format::
variables
: VARIABLES_SYM S* medium [ COMMA S* medium ]* LBRACE S*
variableset* '}' S*
;
variableset
: LBRACE S* vardeclaration [ ';' S* vardeclaration ]* '}' S*
;
"""
super(CSSVariablesRule, self)._setCssText(cssText)
tokenizer = self._tokenize2(cssText)
attoken = self._nexttoken(tokenizer, None)
if self._type(attoken) != self._prods.VARIABLES_SYM:
self._log.error(u'CSSVariablesRule: No CSSVariablesRule found: %s' %
self._valuestr(cssText),
error=xml.dom.InvalidModificationErr)
else:
newVariables = CSSVariablesDeclaration(parentRule=self)
ok = True
beforetokens, brace = self._tokensupto2(tokenizer,
blockstartonly=True,
separateEnd=True)
if self._tokenvalue(brace) != u'{':
ok = False
self._log.error(u'CSSVariablesRule: No start { of variable '
u'declaration found: %r'
% self._valuestr(cssText), brace)
# parse stuff before { which should be comments and S only
new = {'wellformed': True}
newseq = self._tempSeq()#[]
beforewellformed, expected = self._parse(expected=':',
seq=newseq, tokenizer=self._tokenize2(beforetokens),
productions={})
ok = ok and beforewellformed and new['wellformed']
variablestokens, braceorEOFtoken = self._tokensupto2(tokenizer,
blockendonly=True,
separateEnd=True)
val, type_ = self._tokenvalue(braceorEOFtoken), \
self._type(braceorEOFtoken)
if val != u'}' and type_ != 'EOF':
ok = False
self._log.error(u'CSSVariablesRule: No "}" after variables '
u'declaration found: %r'
% self._valuestr(cssText))
nonetoken = self._nexttoken(tokenizer)
if nonetoken:
ok = False
self._log.error(u'CSSVariablesRule: Trailing content found.',
token=nonetoken)
if 'EOF' == type_:
# add again as variables needs it
variablestokens.append(braceorEOFtoken)
# SET but may raise:
newVariables.cssText = variablestokens
if ok:
# contains probably comments only upto {
self._setSeq(newseq)
self.variables = newVariables
cssText = property(_getCssText, _setCssText,
doc=u"(DOM) The parsable textual representation of this "
u"rule.")
media = property(doc=u"NOT IMPLEMENTED! As cssutils resolves variables "\
u"during serializing media information is lost.")
def _setVariables(self, variables):
"""
:param variables:
a CSSVariablesDeclaration or string
"""
self._checkReadonly()
if isinstance(variables, basestring):
self._variables = CSSVariablesDeclaration(cssText=variables,
parentRule=self)
else:
variables._parentRule = self
self._variables = variables
variables = property(lambda self: self._variables, _setVariables,
doc=u"(DOM) The variables of this rule set, a "
u":class:`cssutils.css.CSSVariablesDeclaration`.")
type = property(lambda self: self.VARIABLES_RULE,
doc=u"The type of this rule, as defined by a CSSRule "
u"type constant.")
valid = property(lambda self: True, doc='NOT IMPLEMTED REALLY (TODO)')
# constant but needed:
wellformed = property(lambda self: True)
|