Struct DynamicSelectorContext 

#[repr(C)]
pub struct DynamicSelectorContext {

    pub os: OsCondition,
    pub os_version: OsVersion,
    pub desktop_env: OptionLinuxDesktopEnv,
    pub de_version: u32,
    pub theme: ThemeCondition,
    pub media_type: MediaType,
    pub viewport_width: f32,
    pub viewport_height: f32,
    pub container_width: f32,
    pub container_height: f32,
    pub container_name: OptionString,
    pub prefers_reduced_motion: BoolCondition,
    pub prefers_high_contrast: BoolCondition,
    pub orientation: OrientationType,
    pub pseudo_state: PseudoStateFlags,
    pub language: AzString,
    pub window_focused: bool,
}

Context for evaluating dynamic selectors

Fields

os: OsCondition

Operating system info

os_version: OsVersion

desktop_env: OptionLinuxDesktopEnv

de_version: u32

Numeric version of the active desktop environment (0 = unknown). Used by @os(linux:gnome > 40) style selectors. A value of 0 never satisfies any DE-version constraint, so detection can be wired up later without breaking parsed rules.

theme: ThemeCondition

Theme info

media_type: MediaType

Media info (from WindowState)

viewport_width: f32

viewport_height: f32

container_width: f32

Container info (from parent node) NaN = no container

container_height: f32

container_name: OptionString

prefers_reduced_motion: BoolCondition

Accessibility preferences

prefers_high_contrast: BoolCondition

orientation: OrientationType

Orientation

pseudo_state: PseudoStateFlags

Node state (hover, active, focus, disabled, checked, focus_within, visited)

language: AzString

Language/Locale (BCP 47 tag, e.g., “en-US”, “de-DE”)

window_focused: bool

Whether the window currently has focus (for :backdrop pseudo-class) When false, :backdrop styles should be applied

Implementations

impl DynamicSelectorContext

pub fn from_system_style(system_style: &SystemStyle) -> Self

Create a context from SystemStyle

pub fn with_viewport(&self, width: f32, height: f32) -> Self

Update viewport dimensions (e.g., on window resize)

pub fn with_container( &self, width: f32, height: f32, name: Option<AzString>, ) -> Self

Update container dimensions (for @container queries)

pub fn with_pseudo_state(&self, state: PseudoStateFlags) -> Self

Update pseudo-state (hover, active, focus, etc.)

pub fn viewport_breakpoint_changed( &self, other: &Self, breakpoints: &[f32], ) -> bool

Check if viewport changed significantly (for breakpoint detection)

Trait Implementations

impl Clone for DynamicSelectorContext

fn clone(&self) -> DynamicSelectorContext

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for DynamicSelectorContext

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

Formats the value using the given formatter.

impl Default for DynamicSelectorContext

fn default() -> Self

Returns the “default value” for a type.