Enum Notice 

pub enum Notice {
    Toast,
    Banner,
}

Something the app is telling the user, unprompted.

Two concepts, not one with a placement. They differ in more than where they sit: a toast is transient, stacked and self-dismissing, and a banner is persistent, in flow, one per region, and dismissed by fixing the condition it reports. Folding them into one member with a placement parameter would make lifetime, stacking and dismissal all placement-dependent, which is the description leaking renderer policy.

All three apps have banners: info_banner and warning_banner in audiofiles, five of them in goingson (sync, sync-result, vacation-day, timer-active, past-review), .update-banner in Balanced Breakfast. The two webview apps also have toasts. So neither member is speculative, and no app gains a concept it lacks except audiofiles, whose renderer may legitimately decline to draw a toast at all.

Variants

Toast

Transient, stacked, dismisses itself.

Banner

Persistent, in flow, one per region, dismissed by fixing the cause.

Implementations

impl Notice

pub const fn transient(self) -> bool

Whether it goes away on its own.

pub const fn fill(self) -> Fill

How it sits.

A toast floats above the page rather than resting on it, which is Fill::Overlay’s whole reason to exist. A banner is a card in the flow. Both are raised, and they are raised off different things.

Trait Implementations

impl Clone for Notice

fn clone(&self) -> Notice

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for Notice

impl Debug for Notice

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

Formats the value using the given formatter.

impl Eq for Notice

impl Hash for Notice

fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl PartialEq for Notice

fn eq(&self, other: &Notice) -> bool

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for Notice