Enum style::stylesheets::supports_rule::SupportsCondition

pub enum SupportsCondition {
    Not(Box<SupportsCondition>),
    Parenthesized(Box<SupportsCondition>),
    And(Vec<SupportsCondition>),
    Or(Vec<SupportsCondition>),
    Declaration(Declaration),
    MozBoolPref(CString),
    FutureSyntax(String),
}

An @supports condition

https://drafts.csswg.org/css-conditional-3/#at-supports

Variants

Not(Box<SupportsCondition>)

not (condition)

Parenthesized(Box<SupportsCondition>)

(condition)

And(Vec<SupportsCondition>)

(condition) and (condition) and (condition) ..

Or(Vec<SupportsCondition>)

(condition) or (condition) or (condition) ..

Declaration(Declaration)

property-ident: value (value can be any tokens)

MozBoolPref(CString)

-moz-bool-pref("pref-name") Since we need to pass it through FFI to get the pref value, we store it as CString directly.

FutureSyntax(String)

(any tokens) or func(any tokens)

Methods

impl SupportsCondition

pub fn parse<'i, 't>(
    input: &mut Parser<'i, 't>
) -> Result<SupportsCondition, ParseError<'i>>

Parse a condition

https://drafts.csswg.org/css-conditional/#supports_condition

pub fn eval(&self, cx: &ParserContext) -> bool

Evaluate a supports condition

Trait Implementations

impl Clone for SupportsCondition

fn clone(&self) -> SupportsCondition

Returns a copy of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for SupportsCondition

fn fmt(&self, __arg_0: &mut Formatter) -> Result

Formats the value using the given formatter.

impl ToCss for SupportsCondition

fn to_css<W>(&self, dest: &mut W) -> Result where
    W: Write, 

Serialize self in CSS syntax, writing to dest.

fn to_css_string(&self) -> String

Serialize self in CSS syntax and return a string.