@uirouter/core
Version:
UI-Router Core: Framework agnostic, State-based routing for JavaScript Single Page Apps
28 lines • 1.14 kB
JavaScript
import { trace } from '../common/trace';
import { Rejection } from '../transition/rejectFactory';
/**
* A [[TransitionHookFn]] that skips a transition if it should be ignored
*
* This hook is invoked at the end of the onBefore phase.
*
* If the transition should be ignored (because no parameter or states changed)
* then the transition is ignored and not processed.
*/
function ignoredHook(trans) {
var ignoredReason = trans._ignoredReason();
if (!ignoredReason)
return;
trace.traceTransitionIgnored(trans);
var pending = trans.router.globals.transition;
// The user clicked a link going back to the *current state* ('A')
// However, there is also a pending transition in flight (to 'B')
// Abort the transition to 'B' because the user now wants to be back at 'A'.
if (ignoredReason === 'SameAsCurrent' && pending) {
pending.abort();
}
return Rejection.ignored().toPromise();
}
export var registerIgnoredTransitionHook = function (transitionService) {
return transitionService.onBefore({}, ignoredHook, { priority: -9999 });
};
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