def set_declaration(self, selector, decl_name, value_as_str):
# Remove an existing declaration.. for some reason if they
# get modified, they become invalid (or I'm doing something wrong)
self.remove_declaration(selector, decl_name)
rs = self.get_ruleset(selector)
value_token = tokenizer.tokenize_flat(value_as_str)
# Make a new declaration, add it to the ruleset
new_decl = tinycss.css21.Declaration(decl_name, value_token, None,
None, None)
rs.declarations.append(new_decl)
def get_ruleset(self, selector_css):
"""
Gets the current ruleset for selector_css,
If it isn't currently defined, returns an empty
one.
"""
for rs in self.stylesheet.rules:
if rs.selector.as_css() == selector_css:
return rs
new_ruleset = tinycss.css21.RuleSet(
tokenizer.tokenize_flat(selector_css), [], None, None)
self.stylesheet.rules.append(new_ruleset)
return new_ruleset