Type Alias lightningcss::selector::Component

pub type Component<'i> = Component<'i, Selectors>;

An individual component within a selector.

Aliased Type

enum Component<'i> {
    Combinator(Combinator),
    ExplicitAnyNamespace,
    ExplicitNoNamespace,
    DefaultNamespace(CowArcStr<'i>),
    Namespace(Ident<'i>, CowArcStr<'i>),
    ExplicitUniversalType,
    LocalName(LocalName<'i, Selectors>),
    ID(Ident<'i>),
    Class(Ident<'i>),
    AttributeInNoNamespaceExists {
        local_name: Ident<'i>,
        local_name_lower: Ident<'i>,
    },
    AttributeInNoNamespace {
        local_name: Ident<'i>,
        operator: AttrSelectorOperator,
        value: CSSString<'i>,
        case_sensitivity: ParsedCaseSensitivity,
        never_matches: bool,
    },
    AttributeOther(Box<AttrSelectorWithOptionalNamespace<'i, Selectors>>),
    Negation(Box<[Selector<'i, Selectors>]>),
    Root,
    Empty,
    Scope,
    Nth(NthSelectorData),
    NthOf(NthOfSelectorData<'i, Selectors>),
    NonTSPseudoClass(PseudoClass<'i>),
    Slotted(Selector<'i, Selectors>),
    Part(Box<[Ident<'i>]>),
    Host(Option<Selector<'i, Selectors>>),
    Where(Box<[Selector<'i, Selectors>]>),
    Is(Box<[Selector<'i, Selectors>]>),
    Any(VendorPrefix, Box<[Selector<'i, Selectors>]>),
    Has(Box<[Selector<'i, Selectors>]>),
    PseudoElement(PseudoElement<'i>),
    Nesting,
}

Variants

Combinator(Combinator)

ExplicitAnyNamespace

ExplicitNoNamespace

DefaultNamespace(CowArcStr<'i>)

Namespace(Ident<'i>, CowArcStr<'i>)

ExplicitUniversalType

LocalName(LocalName<'i, Selectors>)

ID(Ident<'i>)

Class(Ident<'i>)

AttributeInNoNamespaceExists

Fields

local_name: Ident<'i>

local_name_lower: Ident<'i>

AttributeInNoNamespace

Fields

local_name: Ident<'i>

operator: AttrSelectorOperator

value: CSSString<'i>

case_sensitivity: ParsedCaseSensitivity

never_matches: bool

AttributeOther(Box<AttrSelectorWithOptionalNamespace<'i, Selectors>>)

Negation(Box<[Selector<'i, Selectors>]>)

Pseudo-classes

Root

Empty

Scope

Nth(NthSelectorData)

NthOf(NthOfSelectorData<'i, Selectors>)

NonTSPseudoClass(PseudoClass<'i>)

Slotted(Selector<'i, Selectors>)

The ::slotted() pseudo-element:

https://drafts.csswg.org/css-scoping/#slotted-pseudo

The selector here is a compound selector, that is, no combinators.

NOTE(emilio): This should support a list of selectors, but as of this writing no other browser does, and that allows them to put ::slotted() in the rule hash, so we do that too.

See https://github.com/w3c/csswg-drafts/issues/2158

Part(Box<[Ident<'i>]>)

The ::part pseudo-element. https://drafts.csswg.org/css-shadow-parts/#part

Host(Option<Selector<'i, Selectors>>)

The :host pseudo-class:

https://drafts.csswg.org/css-scoping/#host-selector

NOTE(emilio): This should support a list of selectors, but as of this writing no other browser does, and that allows them to put :host() in the rule hash, so we do that too.

See https://github.com/w3c/csswg-drafts/issues/2158

Where(Box<[Selector<'i, Selectors>]>)

The :where pseudo-class.

https://drafts.csswg.org/selectors/#zero-matches

The inner argument is conceptually a SelectorList, but we move the selectors to the heap to keep Component small.

Is(Box<[Selector<'i, Selectors>]>)

The :is pseudo-class.

https://drafts.csswg.org/selectors/#matches-pseudo

Same comment as above re. the argument.

Any(VendorPrefix, Box<[Selector<'i, Selectors>]>)

Has(Box<[Selector<'i, Selectors>]>)

The :has pseudo-class.

https://www.w3.org/TR/selectors/#relational

PseudoElement(PseudoElement<'i>)

An implementation-dependent pseudo-element selector.

Nesting

A nesting selector:

https://drafts.csswg.org/css-nesting-1/#nest-selector

NOTE: This is a lightningcss addition.