Data grid accessibility

Keyboard interaction

Key	Action
`Arrow keys`	Move one cell. Left and right are mirrored in right-to-left text.
`Home and End`	Go to the first or last cell in the row; with Ctrl, in the grid.
`Page Down and Page Up`	Move one screen of rows.
`Enter or Space on a header`	Sort by the column; with Shift, add it to the sort.
`Alt + down arrow on a header`	Open the column panel.
`Alt + left or right arrow on a header`	Make the column narrower or wider; with Shift, move it.
`Enter on a cell`	Edit it, or open the row when it can’t be edited.
`F2, or typing`	Edit the cell.
`Enter, Escape and Tab while editing`	Commit, cancel, or commit and move on.
`Space`	Select the row; with Shift, the rows since the last one.
`Ctrl + A`	Select every row.

A native <table> with role="grid", named by label. Headers carry aria-sort, and selectable rows aria-selected.
The grid is one tab stop. Focus moves from cell to cell with a roving tabindex, so screen readers read each cell with its row and column headers.
aria-rowcount, aria-rowindex and aria-colindex stay right while rows are paged or virtualized.
Sorting, filtering, paging and editing errors are announced in a polite status region.