Struct KeyframeCustomPropertiesBuilder 

pub struct KeyframeCustomPropertiesBuilder<'a> {
    cascade: Cascade<'a>,
    decls: Declarations<'a>,
    shorthand_cache: ShorthandsWithPropertyReferencesCache,
}

Resolves the custom properties for a single @keyframes keyframe, layered on top of the base style’s already-computed custom properties.

@keyframes aren’t part of the regular cascade (see bug 1883255), so this lets the caller seed the substitution map with the element’s computed custom properties, cascade the keyframe’s custom declarations on top, and resolve them (running cycle detection and substitution) into context.builder.substitution_functions, which the subsequent animation-value computation reads to substitute var() references.

Fields

cascade: Cascade<'a>

decls: Declarations<'a>

shorthand_cache: ShorthandsWithPropertyReferencesCache

Implementations

impl<'a> KeyframeCustomPropertiesBuilder<'a>

pub fn new( stylist: &'a Stylist, context: &mut Context<'_>, base: ComputedCustomProperties, ) -> Self

Creates a new builder, seeding the substitution map with base (typically the element’s computed custom properties).

pub fn cascade( &mut self, context: &mut Context<'_>, declaration: &'a CustomDeclaration, priority: CascadePriority, )

Cascades a single custom-property declaration from the keyframe.

pub fn build( self, context: &mut Context<'_>, attribute_tracker: &mut AttributeTracker<'_>, )

Resolves the cascaded custom properties into context.builder.substitution_functions.