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Erschienen in: Universal Access in the Information Society 2/2014

01.06.2014 | Long paper

A universal design resource for rich Internet applications based on design patterns

verfasst von: Daniela Fogli, Loredana Parasiliti Provenza, Cristian Bernareggi

Erschienen in: Universal Access in the Information Society | Ausgabe 2/2014

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Abstract

Rich Internet applications have removed most of the constraints of Web 1.0 while giving users more responsiveness and advanced browsing and interaction experiences. These new horizons, however, raise many challenges for people with disabilities or using limited hardware and software technologies, whose risk to be excluded from the benefits deriving from advanced web applications. To address this problem, WCAG 2.0 guidelines have been released as the newest World Wide Web Consortium recommendation for accessible web content, and WAI-ARIA is a candidate recommendation which provides reference specifications for accessible rich Internet applications. However, both specifications contain a huge amount of information that often discourages most web designers from dealing with accessibility issues. Moreover, guidelines are suitable and usually adopted to judge a design solution a posteriori, but they do not suggest how to face a design problem constructively. This paper proposes a design pattern language for accessibility. The language can be regarded as a universal design resource for helping web designers create accessible rich Internet applications compliant with the most recent standards. Knowledge representation through design patterns reflects the problem-solving approach usually followed by software and web designers, while pattern organization in a structured language aims to guide web designers throughout the design process. The language has been implemented as an accessible rich Internet application itself, thus allowing designers with disabilities to participate in web design. In order to evaluate the design pattern language, a three-step process was carried out including: (1) a heuristic analysis with a group of human–computer interaction experts, (2) a survey study with a group of web designers, and (3) a validation on the field with two designers who have been requested to apply the language in real design cases.

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Fußnoten
1
WAI-ARIA is W3C candidate recommendation since January 18, 2011 [52].
 
2
The term “pattern language” is adopted here in accordance with the approach originally proposed in [1], where the collection of design patterns in the architecture domain is structured as a network and each pattern includes indications about its relationships with the other patterns. The same expression is used in human–computer interaction literature on design patterns, e.g., [7, 14, 42].
 
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Metadaten
Titel
A universal design resource for rich Internet applications based on design patterns
verfasst von
Daniela Fogli
Loredana Parasiliti Provenza
Cristian Bernareggi
Publikationsdatum
01.06.2014
Verlag
Springer Berlin Heidelberg
Erschienen in
Universal Access in the Information Society / Ausgabe 2/2014
Print ISSN: 1615-5289
Elektronische ISSN: 1615-5297
DOI
https://doi.org/10.1007/s10209-013-0291-6

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