Preserve QExcell auto filters in XLSX

src/io/excellOffice.ts

@@ -10,6 +10,7 @@ export interface ImportedExcellWorkbook {
     name: string;
     visibility?: "hidden" | "veryHidden";
     frozenPane?: SheetFrozenPane;
+    autoFilter?: string;
     cells: Record<string, string>;
     mergedCells?: MergedCellRange[];
     hyperlinks?: Record<string, string>;
@@ -58,6 +59,7 @@ interface ParsedSheet {
   name: string;
   visibility?: "hidden" | "veryHidden";
   frozenPane?: SheetFrozenPane;
+  autoFilter?: string;
   cells: Record<string, string>;
   mergedCells?: MergedCellRange[];
   hyperlinks?: Record<string, string>;
@@ -254,7 +256,16 @@ export async function exportXlsxBlob(workbook: Workbook): Promise<Blob> {
     const drawingRelationshipId = sheetChartParts.length > 0 ? `rId${sortedExternalHyperlinkEntries(sheet.hyperlinks).length + 1}` : "";
     zip.file(
       `xl/worksheets/sheet${index + 1}.xml`,
-      buildWorksheetXml(sheet.cells, sheet.mergedCells, sheet.hyperlinks, sheet.cellFormats, styleRegistry, drawingRelationshipId, sheet.frozenPane)
+      buildWorksheetXml(
+        sheet.cells,
+        sheet.mergedCells,
+        sheet.hyperlinks,
+        sheet.cellFormats,
+        styleRegistry,
+        drawingRelationshipId,
+        sheet.frozenPane,
+        sheet.autoFilter
+      )
     );
     const relationshipsXml = buildWorksheetRelationshipsXml(
       sheet.hyperlinks,
@@ -286,12 +297,14 @@ export function parsedWorksheetToSheet(
   styleTable: Array<CellFormat | undefined> = []
 ): ParsedSheet {
   const frozenPane = worksheetXmlToFrozenPane(worksheetXml);
+  const autoFilter = worksheetXmlToAutoFilter(worksheetXml);
 
   return {
     id: sheet.id || `sheet-${index + 1}`,
     name: sheet.name || `Лист ${index + 1}`,
     ...(sheet.visibility ? { visibility: sheet.visibility } : {}),
     ...(frozenPane ? { frozenPane } : {}),
+    ...(autoFilter ? { autoFilter } : {}),
     cells: worksheetXmlToCells(worksheetXml, sharedStrings),
     mergedCells: worksheetXmlToMergedCells(worksheetXml),
     hyperlinks: worksheetXmlToHyperlinks(worksheetXml, relationshipsXml),
@@ -410,6 +423,12 @@ export function worksheetXmlToFrozenPane(worksheetXml: unknown): SheetFrozenPane
   };
 }
 
+export function worksheetXmlToAutoFilter(worksheetXml: unknown) {
+  const worksheet = childRecord(worksheetXml, "worksheet");
+  const autoFilter = childRecord(worksheet, "autoFilter");
+  return normalizeCellRange(String(autoFilter.ref ?? ""));
+}
+
 async function worksheetXmlToCharts(
   zip: ZipInstance,
   parser: InstanceType<XmlParserConstructor>,
@@ -581,7 +600,8 @@ export function buildWorksheetXml(
   cellFormats: Record<string, CellFormat> = {},
   styleRegistry = createCellStyleRegistry([cellFormats]),
   drawingRelationshipId = "",
-  frozenPane?: SheetFrozenPane
+  frozenPane?: SheetFrozenPane,
+  autoFilter?: string
 ) {
   const rows = sortedWorksheetEntries(cells, cellFormats).reduce<Record<number, Array<[string, string]>>>((grouped, entry) => {
     const rowNumber = cellRowNumber(entry[0]);
@@ -600,12 +620,13 @@ export function buildWorksheetXml(
     .join("");
 
   const mergeCellsXml = buildMergeCellsXml(mergedCells);
+  const autoFilterXml = buildAutoFilterXml(autoFilter);
   const hyperlinksXml = buildHyperlinksXml(hyperlinks);
   const drawingXml = drawingRelationshipId ? `<drawing r:id="${escapeXmlAttribute(drawingRelationshipId)}"/>` : "";
   const sheetViewsXml = buildSheetViewsXml(frozenPane);
 
   return xmlDeclaration(
-    `<worksheet xmlns="http://schemas.openxmlformats.org/spreadsheetml/2006/main" xmlns:r="http://schemas.openxmlformats.org/officeDocument/2006/relationships">${sheetViewsXml}<sheetData>${rowXml}</sheetData>${mergeCellsXml}${hyperlinksXml}${drawingXml}</worksheet>`
+    `<worksheet xmlns="http://schemas.openxmlformats.org/spreadsheetml/2006/main" xmlns:r="http://schemas.openxmlformats.org/officeDocument/2006/relationships">${sheetViewsXml}<sheetData>${rowXml}</sheetData>${autoFilterXml}${mergeCellsXml}${hyperlinksXml}${drawingXml}</worksheet>`
   );
 }
 
@@ -681,6 +702,11 @@ export function buildSheetViewsXml(frozenPane?: SheetFrozenPane) {
   return `<sheetViews><sheetView workbookViewId="0"><pane ${attributes}/></sheetView></sheetViews>`;
 }
 
+export function buildAutoFilterXml(autoFilter?: string) {
+  const ref = normalizeCellRange(autoFilter ?? "");
+  return ref ? `<autoFilter ref="${escapeXmlAttribute(ref)}"/>` : "";
+}
+
 export function buildWorksheetRelationshipsXml(hyperlinks: Record<string, string> = {}, drawingTarget = "") {
   const refs = sortedExternalHyperlinkEntries(hyperlinks);
   if (refs.length === 0 && !drawingTarget) {
@@ -1633,6 +1659,19 @@ function normalizeChartRange(range: string) {
   return normalized ? `${normalized.start}:${normalized.end}` : `${normalizedStart}:${normalizedStart}`;
 }
 
+function normalizeCellRange(range: string) {
+  const raw = range.trim().replace(/\$/g, "").toUpperCase();
+  const [start, end = start] = raw.split(":");
+  const normalizedStart = normalizeCellAddress(start);
+  const normalizedEnd = normalizeCellAddress(end);
+  if (!normalizedStart || !normalizedEnd) {
+    return "";
+  }
+
+  const normalized = normalizeMergeRange({ start: normalizedStart, end: normalizedEnd });
+  return normalized ? `${normalized.start}:${normalized.end}` : normalizedStart;
+}
+
 function uniqueNumbers(values: number[]) {
   return [...new Set(values)].sort((first, second) => first - second);
 }