Trait style::stylesheets::CssRulesHelpers

pub trait CssRulesHelpers {
    fn insert_rule(
        &self, 
        lock: &SharedRwLock, 
        rule: &str, 
        parent_stylesheet_contents: &StylesheetContents, 
        index: usize, 
        nested: bool, 
        loader: Option<&StylesheetLoader>
    ) -> Result<CssRule, RulesMutateError>;
}

A trait to implement helpers for Arc<Locked<CssRules>>.

Required Methods

fn insert_rule(
    &self,
    lock: &SharedRwLock,
    rule: &str,
    parent_stylesheet_contents: &StylesheetContents,
    index: usize,
    nested: bool,
    loader: Option<&StylesheetLoader>
) -> Result<CssRule, RulesMutateError>

https://drafts.csswg.org/cssom/#insert-a-css-rule

Written in this funky way because parsing an @import rule may cause us to clone a stylesheet from the same document due to caching in the CSS loader.

TODO(emilio): We could also pass the write guard down into the loader instead, but that seems overkill.

Implementations on Foreign Types

impl CssRulesHelpers for RawOffsetArc<Locked<CssRules>>

fn insert_rule(
    &self,
    lock: &SharedRwLock,
    rule: &str,
    parent_stylesheet_contents: &StylesheetContents,
    index: usize,
    nested: bool,
    loader: Option<&StylesheetLoader>
) -> Result<CssRule, RulesMutateError>

Implementors