Enum CssDeclaration 

#[repr(C, u8)]
pub enum CssDeclaration {
    Static(CssProperty),
    Dynamic(DynamicCssProperty),
}

Contains one parsed key: value pair, static or dynamic

Variants

Static(CssProperty)

Static key-value pair, such as width: 500px

Dynamic(DynamicCssProperty)

Dynamic key-value pair with default value, such as width: [[ my_id | 500px ]]

Implementations

impl CssDeclaration

pub const fn new_static(prop: CssProperty) -> Self

pub const fn new_dynamic(prop: DynamicCssProperty) -> Self

pub const fn get_type(&self) -> CssPropertyType

Returns the type of the property (i.e. the CSS key as a typed enum)

pub const fn is_inheritable(&self) -> bool

Determines if the property will be inherited (applied to the children) during the recursive application of the style on the DOM tree

pub const fn can_trigger_relayout(&self) -> bool

Returns whether this rule affects only styling properties or layout properties (that could trigger a re-layout)

pub fn to_str(&self) -> String

pub fn env_variable(&self) -> Option<EnvVariable>

The env() variable this declaration reads, if it is one.

An env() declaration is a Dynamic whose dynamic_id carries the ENV_DYNAMIC_ID_PREFIX; its default_value is the parsed fallback. None for Static and for a plain var() reference.

pub fn is_cascade_resolvable(&self) -> bool

Whether the cascade can turn this declaration into a concrete property: every Static, plus env() references. A var() Dynamic is not (it is substituted at parse time and never reaches the cascade).

pub fn depends_on_dynamic_context(&self) -> bool

Whether this declaration’s value depends on the window’s DynamicSelectorContext

• i.e. it is an env() - so a context change must re-run the cascade for it, exactly as it must for a rule with @media-style conditions.

pub fn resolve_in_cascade( &self, ctx: Option<&DynamicSelectorContext>, ) -> Option<CssProperty>

The concrete property this declaration contributes to the cascade under ctx.

• Static - the property itself.
• env() - the variable’s live value (an absolute length parsed as the declared property’s own type, so padding-bottom gets a padding and top gets an inset), or the parsed fallback when the platform reports none for it, or when there is no context yet (a StyledDom no window has adopted - the same rule conditional rule blocks follow).
• a var() Dynamic - None, matching the previous behaviour of every cascade site (they filtered on Static).

Trait Implementations

impl Clone for CssDeclaration

fn clone(&self) -> CssDeclaration

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for CssDeclaration

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Eq for CssDeclaration

impl Extend<CssDeclaration> for CssDeclarationVec

fn extend<T: IntoIterator<Item = CssDeclaration>>(&mut self, iter: T)

Extends a collection with the contents of an iterator.

fn extend_one(&mut self, item: T)

🔬This is a nightly-only experimental API. (extend_one)

Extends a collection with exactly one element.

fn extend_reserve(&mut self, additional: usize)

🔬This is a nightly-only experimental API. (extend_one)

Reserves capacity in a collection for the given number of additional elements.

impl FromIterator<CssDeclaration> for CssDeclarationVec

fn from_iter<T>(iter: T) -> Self

where T: IntoIterator<Item = CssDeclaration>,

Creates a value from an iterator.

impl Hash for CssDeclaration

fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl Ord for CssDeclaration

fn cmp(&self, other: &CssDeclaration) -> Ordering

This method returns an Ordering between self and other.

fn max(self, other: Self) -> Self

where Self: Sized,

Compares and returns the maximum of two values.

fn min(self, other: Self) -> Self

where Self: Sized,

Compares and returns the minimum of two values.

fn clamp(self, min: Self, max: Self) -> Self

where Self: Sized,

Restrict a value to a certain interval.

fn clamp_to<R>(self, range: R) -> Self

where Self: Sized, R: ClampBounds<Self>,

🔬This is a nightly-only experimental API. (clamp_to)

Restrict a value to a certain range.

impl PartialEq for CssDeclaration

fn eq(&self, other: &CssDeclaration) -> bool

Equality operator ==.

fn ne(&self, other: &Rhs) -> bool

Inequality operator !=.

impl PartialOrd for CssDeclaration

fn partial_cmp(&self, other: &CssDeclaration) -> Option<Ordering>

This method returns an ordering between self and other values if one exists.

fn lt(&self, other: &Rhs) -> bool

Tests less than (for self and other) and is used by the < operator.

fn le(&self, other: &Rhs) -> bool

Tests less than or equal to (for self and other) and is used by the <= operator.

fn gt(&self, other: &Rhs) -> bool

Tests greater than (for self and other) and is used by the > operator.

fn ge(&self, other: &Rhs) -> bool

Tests greater than or equal to (for self and other) and is used by the >= operator.

impl StructuralPartialEq for CssDeclaration