#import <CSS/CSSStyleValue.idl>

// https://drafts.css-houdini.org/css-typed-om-1/#enumdef-cssnumericbasetype
enum CSSNumericBaseType {
    "length",
    "angle",
    "time",
    "frequency",
    "resolution",
    "flex",
    "percent",
};

// https://drafts.css-houdini.org/css-typed-om-1/#dictdef-cssnumerictype
// AD-HOC: We give these default values and mark percentHint as nullable. https://github.com/w3c/css-houdini-drafts/issues/1149
dictionary CSSNumericType {
    long length = 0;
    long angle = 0;
    long time = 0;
    long frequency = 0;
    long resolution = 0;
    long flex = 0;
    long percent = 0;
    CSSNumericBaseType? percentHint;
};

// https://drafts.css-houdini.org/css-typed-om-1/#cssnumericvalue
[Exposed=(Window, Worker, PaintWorklet, LayoutWorklet)]
interface CSSNumericValue : CSSStyleValue {
    [FIXME] CSSNumericValue add(CSSNumberish... values);
    [FIXME] CSSNumericValue sub(CSSNumberish... values);
    [FIXME] CSSNumericValue mul(CSSNumberish... values);
    [FIXME] CSSNumericValue div(CSSNumberish... values);
    [FIXME] CSSNumericValue min(CSSNumberish... values);
    [FIXME] CSSNumericValue max(CSSNumberish... values);

    [FIXME] boolean equals(CSSNumberish... value);

    // FIXME: CSSUnitValue to(USVString unit);
    // FIXME: CSSMathSum toSum(USVString... units);
    [ImplementedAs=type_for_bindings] CSSNumericType type();

    [FIXME, Exposed=Window] static CSSNumericValue parse(USVString cssText);
};

// https://drafts.css-houdini.org/css-typed-om-1/#typedefdef-cssnumberish
typedef (double or CSSNumericValue) CSSNumberish;