Default: Action is in progress
Indeterminate: The system is currently unable to display action progress
Warning: Total progress is complete but certain actions were not able to be completed
Error: An error has occurred and no actions were completed
Related Components
Additional Reading
World Leaders in Research-Based User Experience. “Progress Indicators Make a Slow System Less Insufferable.” Nielson Norman Group, https://www.nngroup.com/articles/progress-indicators/.
Best Practices For Animated Progress Indicators https://www.smashingmagazine.com/2016/12/best-practices-for-animated-progress-indicators/
Improving the UX of Progress Indicators and Feedback Notifications https://usersnap.com/blog/progress-indicators/