Struct MetroView 

pub struct MetroView { /* private fields */ }

A subway-map view of test-coverage chains — a [Facet]. Renders each MetroLine as a horizontal coloured line with circular stops; green tint when the line is fully lit, red unlit stops when not.

Implementations

impl MetroView

pub fn new(title: impl Into<String>) -> Self

An empty view with a title.

pub fn set_map(&mut self, map: MetroMap)

Replace the map (the push model — call each refresh).

pub fn set_title(&mut self, title: impl Into<String>)

Re-title the view (the deck keys facets off [Facet::title], so a host that mounts the local()/remote() view under a specific tab key sets it here).

pub fn map(&self) -> &MetroMap

The current map.

pub fn state(&self) -> &MetroState

FC-3 — read the complete observable state at any frame boundary.

pub fn update(&mut self, msg: Msg) -> Vec<Effect>

FC-2 / FC-8 — the single mutation path. Apply one Msg; returns the (always empty) Effects the host should run. A host’s line drill-in routes its Msg here too, so live == headless.

pub fn select(&mut self, id: Option<String>)

Select a line by id (None clears). A thin wrapper over the FC-2 update mutation path.

pub fn local() -> Self

Discovery-contract local() — the canonical no-arg ctor the test matrix calls to enumerate this facet. Builds a synthetic 2-line demo map (one fully-lit/green chain, one with an unlit emitter/red) so the view renders real lines with no fixture on disk. Mirrors the rest of the facett discovery law (OsmView::local() etc.).

pub fn remote() -> Self

Discovery-contract remote() — same surface, the variant a host builds from a server-loaded marker matrix. No transport in facett, so the wiring is identical; kept so the matrix sees both ctors.

impl MetroView

pub fn copy_text(&self) -> Option<String>

The copyable text: the selected line’s label when one is selected, else every line label, one per line.

impl MetroView

pub fn view(&self, ui: &mut Ui) -> Vec<Msg>

FC-9 render — a pure function of &self: it paints the header + the subway lines and returns the Msgs the interactions produced (none today — the trunk is Sense::hover, selection is host-driven via select). It MUST NOT mutate the MetroState; the impl_facet_via_elm! bridge applies any returned messages through update.

Trait Implementations

impl CopySource for MetroView

fn copy_kinds(&self) -> &[ClipKind]

The kinds this source can offer, richest first.

fn copy_payload(&self) -> Option<ClipPayload>

Produce the payload for the current selection (richest representation).

impl Elm for MetroView

type Model = MetroState

All observable state, in one serializable struct (FC-1 / FC-3).

type Msg = Msg

Every input the component accepts (FC-2). The only legal way to mutate the Model.

type Effect = Effect

Side work as data (FC-8). Use enum Effect {} when the component does no I/O.

fn title(&self) -> &str

The deck keys facets off this (mirrors Facet::title).

fn state(&self) -> &MetroState

FC-3 — read the complete observable state at any frame boundary.

fn update(&mut self, msg: Msg) -> Vec<Effect>

FC-2 / FC-8 — the single mutation path. Apply one Msg; return the Effects the host should run (empty = nothing to do).

fn view(&self, ui: &mut Ui) -> Vec<Msg>

FC-9 / FC-4 — a pure function of &self: it paints and returns the Msgs it produced. It MUST NOT mutate the model or do I/O; the Facet::ui bridge applies the returned messages through update.

impl Facet for MetroView

fn ui(&mut self, ui: &mut Ui)

FC-9: the view is pure (paints + emits Msgs); FC-2: mutation only via update. The immediate-mode trait just bridges the two.

fn caps(&self) -> FacetCaps

Reads the active Theme (stops/line colours follow the palette) and refits to any host size; a line is selectable for drill-in.

fn title(&self) -> &str

fn state_json(&self) -> Value

fn copy(&mut self) -> Option<String>

Clipboard hooks — see clipboard.rs. Defaults: nothing to give/take. Returns the text to place on the clipboard (None = nothing copyable now).

fn selection_json(&self) -> Value

The current selection as JSON (also folded into state_json by convention). Null when nothing/none selectable.

fn as_any_mut(&mut self) -> Option<&mut dyn Any>

Optional downcast handle for hosts that need typed access to a specific facet living inside a FacetDeck (e.g. a robot-UI driver clicking an app-level control that must forward to a concrete component’s own API). Defaulted to None so no existing facet has to change; a component opts in by returning Some(self).

fn scale(&self) -> f32

Current uniform scale (1.0 = native). Override if caps().scalable.

fn set_scale(&mut self, _scale: f32)

Set the uniform scale; clamp internally. Default no-op (not scalable).

fn cut(&mut self) -> Option<String>

Like copy, but also removes the selection. Default delegates to copy.

fn paste(&mut self, _text: &str) -> bool

Accept pasted text. Returns true if consumed.

fn kind(&self) -> &'static str

Stable component-type id (e.g. "jobview", "graphpan", "table"). Two instances with the same kind can exchange portable state; the empty default "" means opted out of cross-instance clone.

fn portable_state(&self) -> Option<Value>

The portable subset of this facet’s state — the fields a same-kind sibling can adopt. None = not cloneable. Kept SEPARATE from state_json (the introspection dump, which may carry derived / render-only data) so this stays round-trippable through load_state.

fn load_state(&mut self, _state: &Value) -> bool

Adopt a portable state produced by portable_state on a same-kind sibling. Returns true if accepted. Default false (opt-in per component).