Struct LogView 

pub struct LogView<Msg> { /* private fields */ }

A view of a LogBuffer that follows new lines as they arrive.

While the view is at the bottom it follows the tail; scrolling up (wheel, keys, scrollbar) stops following and a faint note at the bottom counts the lines below; reaching the bottom again, End or a click on the note resumes. Each line shows its faint timestamp, its level as a word in the level’s status colour and the message. LogView::min_level hides less important lines and LogView::search keeps only lines containing the query, with the matches highlighted; a lowercase query ignores case. Only the lines on screen are drawn and filtering is incremental, so large buffers stay fast.

Keys while focused: ↑/↓ or k/j move a line cursor (shift extends a selection), PgUp/PgDn page, Home jumps to the oldest line, End follows the tail again, Esc clears the cursor, c copies the selected lines or the cursor line. A click places the cursor, shift-click or dragging extends the selection.

A right click on the selected lines (elsewhere it first places the cursor on that line), or Shift+F10 and the menu key, opens a menu with Copy and Raw copy. Copy writes each line as time level message with single spaces, like c; Raw copy keeps the columns lined up as they are shown.

Style keys: list-item (hover, selected, focus) for the rows like List; log-time; log-level.<level> for trace, debug, info, warn, error; log-match for search matches; log-more for the lines-below note; list-header for the empty text; scrollbar. Framework strings: quvyta.log.below, quvyta.log.no-match.

Implementations

impl<Msg: 'static> LogView<Msg>

pub fn new(buffer: &LogBuffer) -> Self

A view of buffer; cloning a buffer is cheap.

pub fn min_level(self, level: LogLevel) -> Self

Hides lines less important than level.

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

Shows only lines containing query and highlights it; empty shows everything.

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

Text shown while the buffer is empty.

pub fn on_copy(self, message: impl Fn(usize) -> Msg + 'static) -> Self

Message sent after c copied lines, with how many.

Trait Implementations

impl<Msg: 'static> Widget<Msg> for LogView<Msg>

fn measure(&self, _cx: &mut MeasureCx<'_>, available: Size) -> Size

The size the widget wants when it may use up to available.

fn paint(&self, cx: &mut PaintCx<'_>, area: Rect)

Draws the widget into area.

fn paint_overlay(&self, cx: &mut PaintCx<'_>, anchor: Rect)

Draws the widget’s overlay after the whole view was painted, when it asked for one with PaintCx::request_overlay. anchor is the area the widget was painted in.

fn event(&self, cx: &mut EventCx<'_, Msg>, event: &Event) -> bool

Handles input. Returns true when the event was used; unused key and scroll events bubble to the parent widget.

fn focusable(&self) -> bool

Whether the widget can take keyboard focus.

fn children(&self) -> &[Node<Msg>]

Child nodes, for widgets that contain other widgets.

fn children_mut(&mut self) -> &mut [Node<Msg>]

Mutable child nodes, used to assign ids.