Test Case sc3.2.5_l3_025: Change of user agent when a link loses the focus (onblur)

Formal Metadata

Formal Metadata
TitleChange of user agent when a link loses the focus (onblur)
DescriptionDocument containing a link; when the user moves focus from the link a MIDI file is loaded with an external player.
CreatorBenToWeb (johannes.koch@…)
RightsCopyright BenToWeb 2004-2007
LanguageEnglish
Date2005-08-29
Statusvalidated

Technologies and Features

Technologies are markup languages or data formats. If the technology is a markup language, “features” refers to elements and attributes.

XHTML™ 1.0 The Extensible HyperText Markup Language (Second Edition)

XHTML™ 1.0 The Extensible HyperText Markup Language (Second Edition)

Feature: a (namespace: http://www.w3.org/1999/xhtml) .

Technical specification: http://www.w3.org/TR/1999/REC-html401-19991224/interact/scripts.html#adef-onblur.

Standard ECMA-262 : ECMAScript Language Specification, 3rd edition (December 1999)

Standard ECMA-262 : ECMAScript Language Specification, 3rd edition (December 1999)

Test Data

Purpose

The test is intended to fail because the change of user agent was not expected.

Expert Guidance

The browser must be JavaScript-enabled.

Test Modes

Accessibility expert.

Test Files

Test file.

TCDL Data

sc3.2.5_l3_025 (XML).

Rules

“Rules” refer to success criteria in WCAG 2.0, checkpoints in WCAG 1.0 and similar requirements.

Primary Rules

The test case fails the following success criterion at line 10, column 161: http://www.w3.org/TR/2007/WD-WCAG20-20070517/Overview.html#consistent-behavior-no-extreme-changes-context.

Functional Outcome

The user initiated the change of context, but did not expect it to be connected to the user's action.

Technical Comment

The actual behaviour may depend on the user agent. On Windows XP, the following behaviour was observed. In Internet Explorer, the audio file was loaded in an instance of Windows Media Player. In Firefox 2.0 and SeaMonkey 1.1, audio file was played by QuickTime (in the same tab as the referencing file). In Opera 9.0, it is not clear how the behaviour should be explained: when pressing a (to cycle through links), the page becomes blank but the URL does not change; no music starts playing.

This test case maps to failure F22: Failure of SC 3.2.5 due to opening windows that are not requested by the user.

Secondary Rules

Secondary Rule (WCAG 2.0 - April 2006 Working Draft (Last Call))

The test case fails the following success criterion at line 10, column 161: http://www.w3.org/TR/2006/WD-WCAG20-20060427/guidelines.html#consistent-behavior-no-extreme-changes-context.

Functional Outcome

The user initiated the change of context, but did not expect it to be connected to the user's action.

Technical Comment

The actual behaviour may depend on the user agent. On Windows XP, the following behaviour was observed. In Internet Explorer, the audio file was loaded in an instance of Windows Media Player. In Firefox 2.0 and SeaMonkey 1.1, audio file was played by QuickTime (in the same tab as the referencing file). In Opera 9.0, it is not clear how the behaviour should be explained: when pressing a (to cycle through links), the page becomes blank but the URL does not change; no music starts playing.

Online version: sc3.2.5_l3_025.

Secondary Rule (WCAG 2.0 - June 2005 Working Draft)

The test case passes the following success criterion: http://www.w3.org/TR/2006/WD-WCAG20-20050630/#consistent-behavior-no-extreme-changes-context.

Functional Outcome

The user initiated the change of context.

Technical Comment

The user moved the focus to another link, which initiated a change of user agent.