Trigger a UI refresh when the scanner finds changes.

Closes #1025

ui/src/common/useResourceRefresh.js

@@ -0,0 +1,23 @@
+import { useSelector } from 'react-redux'
+import { useState } from 'react'
+import { useRefresh } from 'react-admin'
+
+export const useResourceRefresh = (...resources) => {
+  const [lastTime, setLastTime] = useState(Date.now())
+  const refreshData = useSelector(
+    (state) => state.activity?.refresh || { lastTime }
+  )
+  const refresh = useRefresh()
+
+  const resource = refreshData.resource
+  if (refreshData.lastTime > lastTime) {
+    if (
+      resource === '' ||
+      resources.length === 0 ||
+      resources.includes(resource)
+    ) {
+      refresh()
+    }
+    setLastTime(refreshData.lastTime)
+  }
+}