(
headersToGroup: Header<TData, unknown>[],
depth: number,
)
| 512 | let headerGroups: HeaderGroup<TData>[] = [] |
| 513 | |
| 514 | const createHeaderGroup = ( |
| 515 | headersToGroup: Header<TData, unknown>[], |
| 516 | depth: number, |
| 517 | ) => { |
| 518 | // The header group we are creating |
| 519 | const headerGroup: HeaderGroup<TData> = { |
| 520 | depth, |
| 521 | id: [headerFamily, `${depth}`].filter(Boolean).join('_'), |
| 522 | headers: [], |
| 523 | } |
| 524 | |
| 525 | // The parent columns we're going to scan next |
| 526 | const pendingParentHeaders: Header<TData, unknown>[] = [] |
| 527 | |
| 528 | // Scan each column for parents |
| 529 | headersToGroup.forEach((headerToGroup) => { |
| 530 | // What is the latest (last) parent column? |
| 531 | |
| 532 | const latestPendingParentHeader = [...pendingParentHeaders].reverse()[0] |
| 533 | |
| 534 | const isLeafHeader = headerToGroup.column.depth === headerGroup.depth |
| 535 | |
| 536 | let column: Column<TData, unknown> |
| 537 | let isPlaceholder = false |
| 538 | |
| 539 | if (isLeafHeader && headerToGroup.column.parent) { |
| 540 | // The parent header is new |
| 541 | column = headerToGroup.column.parent |
| 542 | } else { |
| 543 | // The parent header is repeated |
| 544 | column = headerToGroup.column |
| 545 | isPlaceholder = true |
| 546 | } |
| 547 | |
| 548 | if ( |
| 549 | latestPendingParentHeader && |
| 550 | latestPendingParentHeader?.column === column |
| 551 | ) { |
| 552 | // This column is repeated. Add it as a sub header to the next batch |
| 553 | latestPendingParentHeader.subHeaders.push(headerToGroup) |
| 554 | } else { |
| 555 | // This is a new header. Let's create it |
| 556 | const header = createHeader(table, column, { |
| 557 | id: [headerFamily, depth, column.id, headerToGroup?.id] |
| 558 | .filter(Boolean) |
| 559 | .join('_'), |
| 560 | isPlaceholder, |
| 561 | placeholderId: isPlaceholder |
| 562 | ? `${pendingParentHeaders.filter((d) => d.column === column).length}` |
| 563 | : undefined, |
| 564 | depth, |
| 565 | index: pendingParentHeaders.length, |
| 566 | }) |
| 567 | |
| 568 | // Add the headerToGroup as a subHeader of the new header |
| 569 | header.subHeaders.push(headerToGroup) |
| 570 | // Add the new header to the pendingParentHeaders to get grouped |
| 571 | // in the next batch |
no test coverage detected