Enum style::rule_tree::CascadeLevel

#[repr(u8)]
pub enum CascadeLevel {
    UANormal,
    PresHints,
    UserNormal,
    AuthorNormal,
    StyleAttributeNormal,
    SMILOverride,
    Animations,
    AuthorImportant,
    StyleAttributeImportant,
    UserImportant,
    UAImportant,
    Transitions,
}

The cascade level these rules are relevant at, as per1.

The order of variants declared here is significant, and must be in ascending order of precedence.

Variants

UANormal

Normal User-Agent rules.

PresHints

Presentational hints.

UserNormal

User normal rules.

AuthorNormal

Author normal rules.

StyleAttributeNormal

Style attribute normal rules.

SMILOverride

SVG SMIL animations.

Animations

CSS animations and script-generated animations.

AuthorImportant

Author-supplied important rules.

StyleAttributeImportant

Style attribute important rules.

UserImportant

User important rules.

UAImportant

User-agent important rules.

Transitions

Transitions

NB: If this changes from being last, change from_byte below.

Methods

impl CascadeLevel

pub unsafe fn from_byte(byte: u8) -> Self

Converts a raw byte to a CascadeLevel.

pub fn guard<'a>(
    &self,
    guards: &'a StylesheetGuards<'a>
) -> &'a SharedRwLockReadGuard<'a>

Select a lock guard for this level

pub fn is_unique_per_element(&self) -> bool

Returns whether this cascade level is unique per element, in which case we can replace the path in the cascade without fear.

pub fn is_important(&self) -> bool

Returns whether this cascade level represents important rules of some sort.

pub fn importance(&self) -> Importance

Returns the importance relevant for this rule. Pretty similar to is_important.

pub fn is_animation(&self) -> bool

Returns whether this cascade level represents an animation rules.

Trait Implementations

impl Clone for CascadeLevel

fn clone(&self) -> CascadeLevel

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Copy for CascadeLevel

impl Debug for CascadeLevel

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

Formats the value using the given formatter.

impl Eq for CascadeLevel

impl PartialEq for CascadeLevel

fn eq(&self, __arg_0: &CascadeLevel) -> bool

This method tests for self and other values to be equal, and is used by ==.

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

This method tests for !=.

impl PartialOrd for CascadeLevel

fn partial_cmp(&self, __arg_0: &CascadeLevel) -> Option<Ordering>

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

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

This method tests less than (for self and other) and is used by the < operator.

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

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

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

This method tests greater than (for self and other) and is used by the > operator.

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

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

impl MallocSizeOf for CascadeLevel

fn size_of(&self, ops: &mut MallocSizeOfOps) -> usize

Measure the heap usage of all descendant heap-allocated structures, but not the space taken up by the value itself.