Keyboard navigation mechanisms in tab widgets: an investigation on ARIA's conformance

ABSTRACT

This study presents an investigation on how keyboard accessibility has been delivered in RIA - Rich Internet Applications. We conducted an evaluation on 32 websites which contained Tab Widgets, from the 150 websites of Alexa's top most accessed websites list. The evaluation process consisted of checking if the Widgets implemented ARIA - Accessible Rich Internet Applications requirements, like the use of role/state semantic attributes and presentation of keyboard interaction strategies. The results showed that, even though the ARIA specification achieved the status of W3C Candidate Recommendation in 2011, few websites implemented Tab Widgets according to ARIA in the Web. The study also identified alternative keyboard navigation mechanisms that are accessible to Assistive Technologies users, despite the disadvantages they might represent.

References

1. P. Fraternali, S. Comai, A. Bozzon, and G. T. Carughi. Engineering rich internet applications with a model-driven approach. ACM Trans. Web, 4(2): 1--47, 2010.
2. A. P. Freire, T. J. Bittar, and R. P. M. Fortes. An approach based on metrics for monitoring web accessibility in brazilian municipalities web sites. In SAC '08: Proceedings of the 2008 ACM symposium on Applied computing, pages 2421--2425, New York, NY, USA, 2008. ACM.
3. A. P. Freire, C. M. Russo, and R. P. de Mattos Fortes. The perception of accessibility in web development by academy, industry and government: a survey of the brazilian scenario. New Review of Hypermedia and Multimedia, 14(2): 149--175, December 2008.
4. J. J. Garrett. Ajax: A new approach to web applications, February 2005. Available online at: http://www.adaptivepath.com/ideas/ajax-new-approach-web-applications/
5. B. Gibson. Enabling an accessible web 2.0. In Proceedings of the 2007 international cross-disciplinary conference on Web accessibility (W4A'07), pages 1--6, New York, NY, USA, 2007. ACM.
6. B. Gibson and R. Schwerdtfeger. Dhtml accessibility: solving the javascript accessibility problem. In Proceedings of the 7th international ACM SIGACCESS conference on Computers and accessibility, Assets '05, pages 202--203, New York, NY, USA, 2005. ACM.
7. C. A. Hall. Web presentation layer bootstrapping for accessibility and performance. In Proceedings of the 2009 International Cross-Disciplinary Conference on Web Accessibililty (W4A), W4A '09, pages 67--74, New York, NY, USA, 2009. ACM.
8. J. Kluge, F. Kargl, and M. Weber. The effects of the ajax technology on web application usability. In 3rd International Conference on Web Information Systems and Technologies (WebIST 2007), Barcelona, Spain, 03/2007 2007.
9. E. V. Munson and M. d. G. Pimentel. Specialized documents. In Web Accessibility, volume 4 of Human-Computer Interaction Series, pages 274--285. Springer London, 2008.
10. The Web Standard Project. The javascript manifesto. Available online at: http://www.webstandards.org/action/dstf/manifesto/.
11. K.-U. Schmidt, J. Dörflinger, T. Rahmani, M. Sahbi, L. Stojanovic, and S. M. Thomas. An user interface adaptation architecture for rich internet applications. In ESWC'08: Proceedings of the 5th European semantic web conference on The semantic web, pages 736--750, Berlin, Heidelberg, 2008. Springer-Verlag.
12. P. Thiessen and C. Chen. Ajax live regions: Reefchat using the fire vox screen reader as a case example. In W4A '07: Proceedings of the 2007 international cross-disciplinary conference on Web accessibility, pages 136--137, New York, NY, USA, 2007. ACM.
13. P. Thiessen and S. Hockema. WAI-ARIA live regions: ebuddy im as a case example. In Proceedings of the 2010 International Cross Disciplinary Conference on Web Accessibility (W4A), W4A '10, pages 33:1--33:9, New York, NY, USA, 2010. ACM.
14. C. A. Velasco, D. Denev, D. Stegemann, and Y. Mohamad. A web compliance engineering framework to support the development of accessible rich internet applications. In W4A '08: Proceedings of the 2008 international cross-disciplinary conference on Web accessibility (W4A), pages 45--49, New York, NY, USA, 2008. ACM.
15. W3C. Web Content Accessibility Guidelines (WCAG) 2.0. W3C Recommendation, December 2008. Available online at: http://www.w3.org/TR/WCAG20/.
16. W3C. Accessible rich internet applications - (WAI-ARIA) version 1.0. W3C Candidate Recommendation, January 2011. Available online at: http://www.w3.org/TR/wai-aria/.
17. W3C. WAI-ARIA 1.0 authoring practices - an author's guide to understanding and implementing accessible rich internet applications. W3C Working Draft, March 2013. Available online at: http://www.w3.org/TR/wai-aria-practices/.
18. W. M. Watanabe, R. P. M. Fortes, and A. L. Dias. Using acceptance tests to validate accessibility requirements in ria. In Proceedings of the International Cross-Disciplinary Conference on Web Accessibility, W4A '12, pages 15:1--15:10, New York, NY, USA, 2012. ACM.
19. W. M. Watanabe, A. C. Jr., V. R. de Uzeda, R. P. M. Fortes, T. A. S. Pardo, and S. M. Alusio. Facilita: Reading assistance for low-literacy readers. In ACM SIGDOC 2009, pages 29--36, Bloomington, IN, USA, 2009. ACM.

Index Terms

• Applied computing

  • Document management and text processing

    • Document preparation

      • Multi / mixed media creation

• Human-centered computing

  • Human computer interaction (HCI)

    • Interaction paradigms

      • Hypertext / hypermedia

• Information systems

  • Data management systems

    • Database design and models

      • Physical data models