Struct SnackBarQueue 

pub struct SnackBarQueue<T> { /* private fields */ }

A notification queue — pure, application-side (in the spirit of crate::form::Form).

Only one notification is visible at a time; the others wait. The application calls tick on every frame (with the elapsed time) to expire the current notification and present the next — Material-style auto-dismiss with no timer on the widget side. dismiss closes the current one immediately (a click on the action or the cross). Generic over the payload T (at minimum the text; often the kind and the action message too).

Implementations

impl<T> SnackBarQueue<T>

pub fn new() -> Self

An empty queue.

pub fn push(&mut self, item: T, seconds: f32)

Adds a notification that will stay visible seconds seconds once at the front.

pub fn current(&self) -> Option<&T>

The notification currently visible (the front of the queue), if there is one.

pub fn tick(&mut self, dt: f32) -> bool

Runs dt seconds down on the notification at the front; if its time is up, it is removed (the next one starts its own countdown). Returns true if the visible notification changed (an expiry) — useful to request another render.

pub fn start_leaving(&mut self)

Marks the current notification as leaving: the host can then play its exit transition (a fade) before the application removes it (via dismiss).

pub fn is_leaving(&self) -> bool

Is the current notification leaving? (a disappearing fade is under way.)

pub fn dismiss(&mut self) -> Option<T>

Closes the current notification at once (action, cross, end of exit); returns its payload.

pub fn is_empty(&self) -> bool

true when no notification is pending.

pub fn len(&self) -> usize

Number of queued notifications (the visible one + those pending).

Trait Implementations

impl<T> Default for SnackBarQueue<T>

fn default() -> Self

Returns the “default value” for a type.