Spacer image should have a blank alt attribute to meet w3c accessability
standards
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Key: TAP5-614
URL: https://issues.apache.org/jira/browse/TAP5-614
Project: Tapestry 5
Issue Type: Improvement
Components: tapestry-core
Affects Versions: 5.0.18, 5.0.17, 5.0.16, 5.0.15, 5.1.0.2, 5.1.0.1, 5.1.0.0
Reporter: Andy Blower
Priority: Minor
Our User Experience Design team have raised an issue with the use of the
tapestry.spacer-image in the Autocomplete mixin. It's also used by the default
client side validation. The issue is that the spacer img tag is rendered with
no alt attribute which is apparently a problem for these reasons:
1) Always add alt attributes to images. Alt is mandatory for accessibility and
for valid (X)HTML.
2) For images that play only a decorative role in the page, use an empty alt
(i.e. alt="") or a CSS background image so that reading browsers do not bother
users by uttering things like "spacer image".
So, Tapestry needs to write a blank alt attribute when it uses a spacer gif.
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