Enum HistoryItem 

pub enum HistoryItem {
    PhaseEnter(String),
    PhaseDone {
        label: String,
        status: StepStatus,
        elapsed: Duration,
    },
    Step {
        label: String,
        status: StepStatus,
        elapsed: Duration,
    },
    CapturedStderr(String),
    DeviceLog {
        stream: String,
        line: String,
    },
    Failure(String),
    SetCurrentStep(Option<String>),
}

One message the render thread receives from upstream producers (cli code, dev-server events, and the stderr capture thread). Most variants paint a row into the terminal’s scrollback via Terminal::insert_before; the SetCurrentStep variant is the exception — it only mutates LiveState::current_step so the inline live region can show a spinner during the next frame.

Variants

PhaseEnter(String)

Phase-transition heading: “▶ Initial build”.

PhaseDone

Phase-completion summary: “✓ Initial build 6.2s”.

Fields

label: String

status: StepStatus

elapsed: Duration

Step

A completed step: “✓ Sync gen/ios 124ms”.

Fields

label: String

status: StepStatus

elapsed: Duration

CapturedStderr(String)

One line captured from the dup2’d stderr pipe (with ANSI escapes already stripped).

DeviceLog

Device log forwarded from the dev-server.

Fields

stream: String

line: String

Failure(String)

One-shot failure description for the scrollback.

SetCurrentStep(Option<String>)

Update the live region’s current_step field. Some(label) makes the spinner visible with the given label; None hides it. Synthesised by the stderr capture thread when it sees whisker_build::ui::TUI_STEP_START_MARKER / TUI_STEP_END_MARKER — those markers let the dev-server’s ui::step calls drive the live spinner without committing a “⏵ started” row that would later double-up with the matching “✓ done” row in scrollback.

Trait Implementations

impl Clone for HistoryItem

fn clone(&self) -> HistoryItem

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for HistoryItem

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

Formats the value using the given formatter.