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Brouter

Navigation lock /lock/2

The page itself vetoes navigation from OnDeactivating / OnRenavigating - awaited lock callbacks on BrouterRouteBase - with a custom dialog instead of window.confirm. The URL never changes while the dialog is open (preventive, no history corruption).

Draft for item 2

Status: saved - navigation is free

Try to leave

  • /lock/1 (renavigation - same route, same instance)
  • /lock/2 (renavigation)
  • Home (deactivation - the page would be disposed)

A parameter change (/lock/1 → /lock/2) keeps this route matched, so a route-declared LeaveGuard would never fire - OnRenavigating is what protects the dirty draft there.