Enum NavChange 

pub enum NavChange {
    Initial,
    Push,
    Pop,
    Replace,
    Reset,
}

The declarative router vocabulary (a go_router-subset layer), flat-re-exported from frust-widgets so app code never names that crate directly: Router resolves a location against a Route table (built via RouteBuilder) into Resolution/ResolvedPages driving a NavigatorController, with :param/query parsing (Location/PathPattern/RouteParams), per-route/top-level Redirects (loop-guarded at DEFAULT_REDIRECT_LIMIT), and an ErrorBuilder fallback for an unmatched location.

A page builder receives the location’s query merged under its path captures, so /terminal?session=abc reads its own parameter.

RouteNavigator is the seam a screen navigates through: a Send + Sync queue of NavRequest data (paths and names, never closures) that rides provide_context — the Router itself cannot, since it holds Rc page builders. RouterDeepLinks::track drains it every rebuild, so a request queued in an event handler (on any thread — the queue never panics off-thread) applies on the next frame.

shell_route is the nested-navigator binding: its children resolve onto a second NavigatorController the app owns and its own page — the chrome wrapping that inner navigator — stays retained while they do, so navigating between siblings inside the shell never rebuilds the chrome. See its docs for the keep rule and the per-verb table. How the page stack changed between the last two published RouteStacks. DERIVED from the diff of consecutive published stacks — never recorded at a mutation site (see the module docs).

Variants

Initial

The first publish this navigator ever made (no previous stack to diff against).

Push

The new stack is the previous one plus exactly one more entry on top.

Pop

The new stack is a strict prefix of the previous one (exactly one entry removed from the top).

Replace

Same depth as the previous stack; only the top entry differs.

Reset

Anything else — e.g. a router go() that swaps the whole chain in one batch, or a multi-page pop that isn’t a strict-prefix shrink.

Trait Implementations

impl Clone for NavChange

fn clone(&self) -> NavChange

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for NavChange

impl Debug for NavChange

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

Formats the value using the given formatter.

impl Default for NavChange

fn default() -> NavChange

Returns the “default value” for a type.

impl Eq for NavChange

impl PartialEq for NavChange

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for NavChange