Struct LogBar 

pub struct LogBar { /* private fields */ }

An expandable log bar anchored to the bottom of the viewport.

Owns its own entry buffer — construct once, store on your app struct, call LogBar::push (or one of the shortcuts) from any event handler, and call LogBar::show once per frame to render.

Implementations

impl LogBar

pub fn new() -> Self

Create a log bar with default settings: capacity 100, heading "Message Log", starts collapsed.

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

Set the label shown in the collapsed header. Default: "Message Log".

pub fn max_entries(self, n: usize) -> Self

Set the maximum number of entries kept. When the buffer is full the oldest entry is dropped on each push. Default: 100. Clamped to a minimum of 1.

pub fn id_salt(self, salt: impl Hash) -> Self

Override the id used for the panel and collapse state. Set this if you want more than one LogBar in a single app.

pub fn push(&mut self, kind: LogKind, msg: impl Into<String>)

Append an entry. The current wall-clock time (HH:MM:SS UTC) is recorded as the row’s timestamp.

pub fn sys(&mut self, msg: impl Into<String>)

Shortcut for push(LogKind::Sys, msg).

pub fn out(&mut self, msg: impl Into<String>)

Shortcut for push(LogKind::Out, msg).

pub fn recv(&mut self, msg: impl Into<String>)

Shortcut for push(LogKind::In, msg) — named recv because in is a Rust keyword.

pub fn err(&mut self, msg: impl Into<String>)

Shortcut for push(LogKind::Err, msg).

pub fn clear(&mut self)

Remove all entries.

pub fn len(&self) -> usize

Number of entries currently stored.

pub fn is_empty(&self) -> bool

Whether the buffer is empty.

pub fn is_open(&self) -> bool

Whether the bar is currently expanded.

pub fn set_open(&mut self, open: bool)

Programmatically set the expanded state.

pub fn entries(&self) -> impl Iterator<Item = &LogEntry>

Iterate entries from newest to oldest.

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

Render the bar. Call once per frame, before your CentralPanel, inside your App::ui method.

Trait Implementations

impl Debug for LogBar

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

Formats the value using the given formatter.

impl Default for LogBar

fn default() -> Self

Returns the “default value” for a type.