Trait parcel_selectors::visitor::SelectorVisitor

source · 
pub trait SelectorVisitor<'i>: Sized {
    type Impl: SelectorImpl<'i>;

    fn visit_attribute_selector(
        &mut self,
        _namespace: &NamespaceConstraint<&<Self::Impl as SelectorImpl<'i>>::NamespaceUrl>,
        _local_name: &<Self::Impl as SelectorImpl<'i>>::LocalName,
        _local_name_lower: &<Self::Impl as SelectorImpl<'i>>::LocalName
    ) -> bool { ... }
    fn visit_simple_selector(&mut self, _: &Component<'i, Self::Impl>) -> bool { ... }
    fn visit_selector_list(&mut self, list: &[Selector<'i, Self::Impl>]) -> bool { ... }
    fn visit_complex_selector(
        &mut self,
        _combinator_to_right: Option<Combinator>
    ) -> bool { ... }
}
Expand description

A trait to visit selector properties.

All the visit_foo methods return a boolean indicating whether the traversal should continue or not.

Required Associated Types

The selector implementation this visitor wants to visit.

Provided Methods

Visit an attribute selector that may match (there are other selectors that may never match, like those containing whitespace or the empty string).

Visit a simple selector.

Visit a nested selector list. The caller is responsible to call visit into the internal selectors if / as needed.

The default implementation does this.

Visits a complex selector.

Gets the combinator to the right of the selector, or None if the selector is the rightmost one.

Implementors