TECHNICAL ISO/IEC TR REPORT 13066-4 First edition 2015-11-01 Information technology Interoperability with assistive technology (AT) - Part 4: Linux/UNIX graphical environments accessibility API Technologies de I'information -Interoperabilite avec les technologies d'assistance Partie 4: Accessibilite API des environnements graphiques llnux/UNIX Reference number IS0/IEC TR 13066-4:2015(E) IEC International Organization for Standardization NG INST OF STANDARDIZATION C15956617 @IS0/IEC2015 I without license from IHS IS0/IEC TR 13066-4:2015(E) COPYRIGHTPROTECTEDDOCUMENT ISO/IEC2015,PublishedinSwitzerland All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting on the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address below or ISO's member body in the country of the requester. ISO copyrightoffice Ch. de Blandonnet 8 . CP 401 CH-1214 Vernier, Geneva, Switzerland Tel. +41 22 749 01 11 Fax +41 22 749 09 47 [email protected] www.iso.org Intenationaibr PrganizationforStandardization icensee-ZHEJIANG INST OF STANJSA6FEC 31.5 -All rights reserved etworking permitted without license from IHS IS0/IEC TR 13066-4:2015(E) Contents Page Foreword ..iv Introduction. ..V 1 Scope. .1 2 Terms and definitions 3 Overview ..4 3.1 General description. .4 3.2 Architecture 3.2.1 ATK Aware Toolkits .6 3.2.2 AT-SPI Aware Assistive Technologies 11 3.3 Support apart from AT-SPI/ATK .12 4 Using the API .12 4.1 Overview .12 4.2 User Interfaceelements .12 4.3 Getting and setting focus .13 4.4 Communication mechanisms .14 4.5 How GNOME uses the ATK/AT-SPI accessibility Application Programming Interface .14 5 Exposing User Interface Element Information ..15 5.1 Role, state(s), boundary, name, and description of the user interface element. .15 5.2 Current value and any minimum or maximum values, if the user interface element representsoneofarangeofvalues .16 5.3 Text contents, text attributes, and the boundary of text rendered to the screen .17 5.4 The location of the user interface element in relation to other user interface elements... 17 6 Exposing User Interface Element Actions ..18 7 Keyboard focus ..18 8 Events ..19 8.1 Changes in the user interface element value .19 8.2 Changes in the name of the user interface element 20 8.3 Changes in the description of the user interface element .20 8.4 Changes in the boundary of the user interface element .20 9 Programmatic modifications of states, properties, values, and text ..20 10 Design considerations .21 10.1 Using AT-SPI/ATK .21 11 Further information .21 11.1 Testing Accessibility with Accerciser .22 Bibliography .23 iii vided by IHS under d without license from IHS Not for Resale, 2016/1/8 02:30:23