SelectionArea

SelectionArea control. Build it with the selection_area helper.

Example

selection_area(
  content: text("SelectionArea"),
  expand: true,
  on_change: ->(event) {}
)

Properties

• content — The single child control rendered inside this control.

Common layout and animation properties

• badge — Badge drawn on the corner of the control.
• col — Responsive column span (1-12) per breakpoint.
• data — Arbitrary value you can attach to the control and read back in handlers.
• disabled — Disables interaction when true.
• expand — Fills the available space along the parent's main axis when true.
• expand_loose — Like expand, but only grows up to the child's natural size.
• key — Stable identity used to preserve state across rebuilds.
• opacity — Opacity from 0.0 (transparent) to 1.0 (opaque).
• rtl — Renders right-to-left when true.
• tooltip — Text shown on hover/long-press.
• visible — Hides the control when false.

Events

• on_change — Fired when the value changes.

Reference

• Family: materials
• Widget type: selectionarea
• Helpers: selection_area, selectionarea