angular-docs-cn/packages/zone.js/doc/override-task.puml

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@startuml
[*] --> notScheduled: initialize
notScheduled --> scheduling: scheduleTask
scheduling: zoneSpec.onScheduleTask
scheduling: zoneSpec.onHasTask
scheduling --> scheduled: override with\n anotherZone
scheduled --> running: timeout callback\nreadystatechange\ncallback
running: anotherZoneSpec:onInvokeTask
scheduled --> canceling: clearTimeout\n/abort request
canceling: anotherZoneSpec.onCancelTask
canceling --> notScheduled
canceling: zneSpec.onHasTask
running --> notScheduled
running: zoneSpec.onHasTask
@enduml