Struct ForceTickContext 

pub struct ForceTickContext { /* private fields */ }

A per-surface force-tick signal, subscribed by every segment on that surface. Bumped after each event so segments re-run even when their view reads signals the effect cannot auto-track — notably the binary-side root segment under hot reload, whose view reads signals created in the app dylib (cross-boundary tracking is unreliable, so the force-tick makes it re-read current values, e.g. the real viewport). Per-surface so one surface’s event does not force-render the others; a global change (theme) re-renders all surfaces via its own shared signal, not this tick.

Implementations

impl ForceTickContext

pub fn new() -> Self

Allocates a fresh, inactive per-surface instance.

pub fn enter(&self) -> ForceTickGuard

Makes this instance the live one until the returned guard drops, which restores the previously-active instance. Nest by keeping guards in scope; they restore in reverse order.

pub fn enter_ambient() -> ForceTickGuard

Makes the ambient instance — the one that exists before any surface is built, and the only world a single-surface app ever has — live until the returned guard drops.

What the reactive flush needs for an effect owned by SurfaceHandle::NONE: it was registered outside any surface, so its world is this one, and running it against whichever surface happened to be entered when the signal fired would resolve its layout, overlays and focus in somebody else’s. Reachable as soon as one app has both — a window tree that never built a surface and a second tree that did.

Trait Implementations

impl Default for ForceTickContext

fn default() -> Self

Returns the “default value” for a type.

impl Drop for ForceTickContext

fn drop(&mut self)

Executes the destructor for this type.

fn pin_drop(self: Pin<&mut Self>)

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

Execute the destructor for this type, but different to Drop::drop, it requires self to be pinned.