Module row 

Compositional row widgets for TreeView: ExpandToggle, NodeIconWidget, and TreeRow.

These widgets are intended to be composed into a FlexRow (or positioned manually) by the TreeView when building visible rows.

Structs

ExpandToggle

Draws the ▶/▼ expand arrow. Display-only — returns Ignored for all events.

NodeIconWidget

Draws the coloured icon glyph for a node. Width is ICON_W + ICON_GAP; height fills the row.

TreeRow

Compositional row: SizedBox (indent) | ExpandToggle | NodeIconWidget | Label.

Constants

EXPAND_W

ICON_GAP

ICON_W

Functions

icon_color

Return the fill colour for a given node icon type.