Try to prevent user from closing Cockpit during video record

src/components/mini-widgets/MiniVideoRecorder.vue

@@ -248,6 +248,22 @@ watch(externalStreams, () => {
     updateCurrentStream(savedStream)
   }
 })
+
+// Try to prevent user from closing Cockpit when a stream is being recorded
+watch(isRecording, () => {
+  if (isRecording.value) {
+    window.onbeforeunload = () => {
+      const alertMsg = `
+        You have a video recording ongoing.
+        Remember to stop it before closing Cockpit, or the record will be lost.
+      `
+      Swal.fire({ text: alertMsg, icon: 'warning' })
+      return 'I hope the user does not click on the leave button.'
+    }
+  } else {
+    window.onbeforeunload = null
+  }
+})
 </script>
 
 <style scoped>