Struct LiveTreeRenderer 

pub struct LiveTreeRenderer { /* private fields */ }

EventSink that re-renders the cascade tree to stdout in place every RoundCompleted (and Finished). Uses ANSI cursor positioning so the tree fills in line-by-line as the cascade unfolds — same idiom nix-output-monitor (nom) uses.

Usage: hand to Cascade::new()...events(&renderer).run() for default “watch the cascade unfold” behavior in any TTY-attached cli bin.

Caller is responsible for not wiring this when stdout is a pipe — it would emit ANSI escapes into the captured output. crate::output handles the TTY check.

Implementations

impl LiveTreeRenderer

pub fn new(color: bool, max_depth: Option<usize>) -> Self

pub fn with_max_height(self, h: Option<usize>) -> Self

Builder: set an explicit maximum frame height (lines). Used for tests that can’t rely on a real terminal. Some(0) disables height capping.

In production the height is auto-detected from the terminal on each paint via console::Term::stdout().size().

pub fn with_header_text(self, text: impl Into<String>) -> Self

Builder: replace the default "Cascade deploy" header with a single custom line.

pub fn with_header_lines(self, lines: Vec<String>) -> Self

Builder: provide multiple header lines. The first renders with ┏━ (top-left), each subsequent line renders with ┣ (T-junction) — matches nom’s section convention. Use to keep a wide header readable on narrow terminals without truncation:

LiveTreeRenderer::new(color, max_depth)
    .with_header_lines(vec![
        format!("Strategy: {} || Nodes: {}", name, n),
        format!("Fanout: {} || Failures: {}%", f, fr),
    ])

Trait Implementations

impl EventSink for LiveTreeRenderer

fn emit(&self, event: &CascadeEvent)