[ tidy-Bugs-1901689 ] 12.4.1.2 associate labels...flagging hidden tags erroneously

Bugs item #1901689, was opened at 2008-02-25 12:29
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Category: Accessibility
Group: Current - all platforms
Status: Open
Resolution: None
Priority: 5
Private: No
Submitted By: Mufasa (mufasa)
Assigned to: Nobody/Anonymous (nobody)
Summary: 12.4.1.2 associate labels...flagging hidden tags erroneously

Initial Comment:
Hidden (and a few other) input fields are getting flagged under Accessibility 
Level 2 rule 12.4.1.2 ("associate labels explicitly with form controls") when 
they should not be.

See http://www.w3.org/TR/2007/WD-WCAG20-TECHS-20071211/H44.html#H44-description 
for more info. The important parts are:

<quote>
Note 1: Elements that use explicitly associated labels are:

    * input type="text"
    * input type="checkbox"
    * input type="radio"
    * input type="file"
    * input type="password"
    * textarea
    * select

Note 2: The label element is not used for the following because labels for 
these elements are provided via the value attribute (for Submit and Reset 
buttons), the alt attribute (for image buttons), or element content itself 
(button).

    * Submit and Reset buttons (input type="submit" or input type="reset")
    * Image buttons (input type="image")
    * Hidden input fields (input type="hidden")
    * Script buttons (button elements or <input type="button">)
</quote>

(I have not tested if the other controls in this list are incorrectly flagged 
or not.)



This is especially noticeable for any developers that use frameworks, such as 
ASP.NET, that use hidden fields to track view state on every page.

Example:

<input type="hidden" name="ctl1000" id="__VIEWSTATE" 
value="/wEPDwdfczNTUyMzEyZGTrFxuLgwqTI4uljgQqg==" />

(Although, any hidden type input tag will flag this rule, when it shouldn't.)




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