Struct NavigationDestination 

pub struct NavigationDestination { /* private fields */ }

A declared destination: everything the caller said about one entry in the list — its mark, its name, the mark it swaps to while selected, a badge, a tooltip, and the decorations that belong to this entry rather than to the list.

It exists as a value because an application that adapts across widths has three chromes to feed and one navigation to describe. NavigationRail, BottomBar, NavigationDrawer and NavScaffold all take destinations, so the list is written once and cannot drift between the forms.

use frus_widgets::{Icons, NavigationDestination};

let inbox = NavigationDestination::new(Icons::MAIL_OUTLINE, "Inbox")
    .selected_icon(Icons::MAIL)
    .badge(3)
    .tooltip("Unread messages");
assert_eq!(inbox.label(), "Inbox");

Implementations

impl NavigationDestination

pub fn new(icon: impl Into<DestinationIcon>, label: impl Into<String>) -> Self

A destination with nothing said about it but its mark and its name.

pub fn selected_icon(self, icon: impl Into<DestinationIcon>) -> Self

The mark shown while this destination is selected, where it differs from the resting one (navigation_rail.dart:1132).

The convention the icon set is drawn for: an outline at rest, the filled twin when selected — Icons::FAVORITE_BORDER and Icons::FAVORITE, or an outlined style against the filled one. It is how a destination reads as selected without leaning on colour alone, which is the difference between navigation a colour-blind reader can use and navigation they cannot.

pub fn badge(self, count: u32) -> Self

A notification count on this destination. 0 shows nothing, so a count straight out of a model needs no if around it.

pub fn tooltip(self, message: impl Into<String>) -> Self

What a pointer resting here is told (navigation_rail.dart:1155).

A rail shows glyphs without labels by default, which is the case this is for: the mark is all a destination says about itself, and a mark is not always enough.

pub fn disabled(self) -> Self

Marks this destination unreachable (navigation_rail.dart:1161): it takes the disabled ink, nothing lights under the pointer, it emits no message, and the keyboard steps over it.

pub fn indicator_color(self, color: Color) -> Self

This destination’s own indicator colour, over the theme’s (navigation_rail.dart:1144).

pub fn indicator_shape(self, shape: ShapeBorder) -> Self

This destination’s own indicator shape, over the theme’s (navigation_rail.dart:1148).

pub fn overlay_color(self, overlay: WidgetStateProperty<Color>) -> Self

This destination’s own highlight per state, over the framework’s state layer (navigation_bar.dart:232).

pub fn tile_color(self, color: Color) -> Self

The whole area behind this destination, edge to edge — read by a NavigationDrawer’s rows and by nothing else (navigation_drawer.dart:228).

pub fn label(&self) -> &str

What this destination is called.

Trait Implementations

impl Clone for NavigationDestination

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for NavigationDestination

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

Formats the value using the given formatter.

impl Default for NavigationDestination

fn default() -> Self

Returns the “default value” for a type.