Loading Bar

LoadingBar is Orbital's global navigation chrome indicator — a slim teleported bar for route changes and coarse async work.

Mount a single LoadingBarProvider (or this LoadingBar alias) near your app root, then call LoadingBarInjection::start, LoadingBarInjection::finish, or LoadingBarInjection::error from handlers. The bar itself has no props — the provider teleports it to the viewport top.

• Route transitions and full-page data fetches
• Long-running saves where a slim top indicator is enough
• App-wide async that should not block page interaction

Prefer Spinner for inline panel waits. Prefer ProgressBar when you have a known completion percentage.

• Wrap your app shell (or preview subtree) in LoadingBarProvider or LoadingBar.
• From a button handler, router hook, or resource callback, call LoadingBarInjection::expect_context().start() when work begins.
• Call .finish() when the operation succeeds — the bar animates to 100% and hides.
• Call .error() on failure — the bar completes with danger semantic color.
• The bar teleports to the top of the viewport; children stay in place — only the provider placement matters.