Function computePastePlan

Where pasted cells go, like Excel: from the anchor, once – or tiled over a selected range that is an integer multiple of the matrix, a single value into every cell of the selected range; cut off at the last column (and at the last row unless rows may be added); cells that are not writable are skipped. DOM-free.

Example

const plan = computePastePlan({ matrix: [["x"]], anchorRow: 1, anchorColumn: 2, shownColumns: [0, 1, 2, 3],
  rowCount: 10, selection: { rows: 3, columns: 1 } });
plan.cells.length;   // 3 – rows 1…3 of column 2
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Since

1.1.99