Struct SemanticsCtx 

pub struct SemanticsCtx { /* private fields */ }

Collects nodes during a semantics pass, threading the absolute origin/size and the parent/child structure.

Node ids are stable across passes: each is composed from the owning pod’s persistent base id and a per-pod slot, so a widget keeps its id every frame, keyed reorders included, as assistive-technology focus continuity requires.

Implementations

impl SemanticsCtx

pub fn origin(&self) -> Point

The absolute origin of the widget being visited.

pub fn size(&self) -> Size

The size of the widget being visited.

pub fn push_node(&mut self, role: Role, build: impl FnOnce(&mut Node)) -> NodeId

Contribute a leaf node of role with bounds from the current geometry; build sets label and state. Returns its id.

pub fn push_container( &mut self, role: Role, build: impl FnOnce(&mut Node), visit: impl FnOnce(&mut SemanticsCtx), ) -> NodeId

Contribute a container node whose children are the nodes contributed during visit; it is stored after them (post-order).

pub fn set_focused(&mut self, id: NodeId)

Record id as the focused node; the last call in a pass wins.