refactor: extraction des modules xlsx, lien dashboard-grille et inspecteur redimensionnable #154

2026-09-29 15:25:38 -04:00
parent 72da123a51
commit 3f52b56251
20 changed files with 378 additions and 141 deletions
@@ -0,0 +1,45 @@
+/* ObsiGate — XLSX A1 reference helpers (#154-A5).
+ *
+ * Pure functions (no DOM, no i18n): safe to unit-test in Node and shared by the
+ * viewer. Extracted from frontend/js/viewer.js without behaviour change.
+ */
+
+/** Parse an A1 reference ("B12") into its 1-based (row, col) parts. */
+export function parseRef(ref) {
+  const m = /^([A-Z]+)(\d+)$/.exec(ref || "");
+  if (!m) return null;
+  let col = 0;
+  for (const ch of m[1]) col = col * 26 + (ch.charCodeAt(0) - 64);
+  return { row: Number(m[2]), col };
+}
+
+/** Column number (1-based) → letters ("A", "Z", "AA"). */
+export function columnName(col) {
+  let name = "";
+  while (col > 0) {
+    const rem = (col - 1) % 26;
+    name = String.fromCharCode(65 + rem) + name;
+    col = Math.floor((col - 1) / 26);
+  }
+  return name;
+}
+
+/** Find a rendered cell inside a sheet panel by (row, col). */
+export function findTd(panel, row, col) {
+  return panel.querySelector(`td[data-cell="${columnName(col)}${row}"]`);
+}
+
+/** Sheet prefix of a range ref ("'Mon onglet'!$A$1" → "Mon onglet"), or null. */
+export function sheetOfRef(ref) {
+  const s = String(ref || "");
+  if (!s.includes("!")) return null;
+  return s.split("!")[0].replace(/^'|'$/g, "");
+}
+
+/** First cell of a range ref ("Data!$A$1:$B$5" → "A1"), or null. */
+export function firstCellOfRange(ref) {
+  const s = String(ref || "");
+  const body = s.includes("!") ? s.split("!").pop() : s;
+  const m = /([A-Za-z]+)\$?(\d+)/.exec(body);
+  return m ? `${m[1].toUpperCase()}${m[2]}` : null;
+}