Dashboard corrections

frontend/src/components/dashboardCards.js

@@ -118,10 +118,23 @@ export function mapTitleTip(card, item) {
   return key ? (item[key] || '') : ''
 }
 
+// Floor-plan preview on hover, for rows that carry coordinates. Returns null
+// when the card declares none or the row has not been placed on the map - an
+// unplaced printer still belongs on the card, it just has nothing to preview.
+export function mapHover(card, item) {
+  const spec = card.map && card.map.maphover
+  if (!spec) return null
+  const x = item[spec.x]
+  const y = item[spec.y]
+  if (x === null || x === undefined || y === null || y === undefined) return null
+  return { x, y, label: spec.label ? (item[spec.label] || '') : '' }
+}
+
 export function cardRows(card) {
   return rows(card).map((item) => ({
     title: mapTitle(card, item),
     titletip: mapTitleTip(card, item),
+    maphover: mapHover(card, item),
     detail: mapDetail(card, item),
     detailtip: mapDetailTip(card, item),
     meta: mapMeta(card, item),