Fit columns to viewport

Prop fitColumns — engine behaviour, default false.

Guide

When to use it

You want the table to always fill its container with no horizontal scrollbar — dashboards, fixed-width cards.

How it works

Distributes the available width across the visible columns (utility columns keep their fixed size). It's a pure render overlay — it never mutates your column-sizing model.

Gotchas

• While on, it suppresses resize handles and turns off column virtualization (it owns widths).
• Mutually exclusive with horizontal scrolling and with enableResponsive (use one strategy).

Live example

Example source

import React from 'react'
import { BstTableMui } from '@bloomskill/table-mui'
import type { BstTableColumn } from '@bloomskill/table-engine'
import '@bloomskill/table-engine/styles.css'
type Row = { id: string; name: string; team: string; role: string; score: number }
const seed: Row[] = [
  { id: '1', name: 'Ada Lovelace',    team: 'Platform', role: 'Engineer',  score: 92 },
  { id: '2', name: 'Alan Turing',     team: 'Research', role: 'Scientist', score: 88 },
  { id: '3', name: 'Grace Hopper',    team: 'Platform', role: 'Engineer',  score: 95 },
  { id: '4', name: 'Katherine J.',    team: 'Research', role: 'Analyst',   score: 90 },
  { id: '5', name: 'Edsger Dijkstra', team: 'Platform', role: 'Architect', score: 84 },
]
const columns: BstTableColumn<Row>[] = [
  { id: 'name', accessorKey: 'name', header: 'Name' },
  { id: 'team', accessorKey: 'team', header: 'Team' },
  { id: 'role', accessorKey: 'role', header: 'Role' },
  { id: 'score', accessorKey: 'score', header: 'Score', sortFn: 'basic' },
]
export default function App() {
  return (
    <BstTableMui data={seed} columns={columns} getRowId={(r) => r.id}
      fitColumns />
  )
}

Loading live example…

Overview

Layer	enable* (engine, resolved in useBstTable)
Type	boolean
Default	false
Maps to	custom render measure — sizes visible columns to the scroll box (utility columns fixed) so there is no horizontal scroll; overflow-x:hidden + resizers suppressed while on. Pure render overlay via distributeFitWidths (no model mutation)
Status	✅ done
Since	v0.20.0
Settings sheet	Columns

Fit-to-viewport layout — size columns to the container so there is no horizontal scroll. The data columns share the available width in proportion to their own sizes (utility columns stay fixed); manual column resizing is suppressed while this is on. Default: false.

Enable it

<BstTableMui
  data={rows}
  columns={columns}
  fitColumns
/>

Swap BstTableMui for BstTableShadcn (and the CSS import) for the shadcn skin — same props.

Behavior & interactions

• Conflicts with enableColumnResizing — fitColumns suppresses the resizers.
• Conflicts with enableResponsive — responsive hiding is a no-op under fitColumns.

Spec coverage

Spec codes (A1, C2, X8, …) are Bst-Table's internal requirement IDs from the capability matrix; P0–P2 mark the delivery phase. They are traceability tags, not part of the public API.

• G3 · Auto layout — ✅ built. fixed layout + total-size + fitColumns fit-to-viewport