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[Bug 9626] New: Elements which can't match :required rule should not match :optional pseudo-class

From: <bugzilla@jessica.w3.org>
Date: Fri, 30 Apr 2010 10:45:26 +0000
To: public-html-bugzilla@w3.org
Message-ID: <bug-9626-2486@http.www.w3.org/Bugs/Public/>

           Summary: Elements which can't match :required rule should not
                    match :optional pseudo-class
           Product: HTML WG
           Version: unspecified
          Platform: All
               URL: http://www.w3.org/TR/html5/interactive-elements.html#s
        OS/Version: All
            Status: NEW
          Severity: normal
          Priority: P2
         Component: HTML5 spec bugs
        AssignedTo: dave.null@w3.org
        ReportedBy: mounir.lamouri@gmail.com
         QAContact: public-html-bugzilla@w3.org
                CC: ian@hixie.ch, mike@w3.org, public-html@w3.org

The :optional pseudo-class matches:
- button  elements
- input elements that are not required
- select elements
- textarea elements that do not have a required attribute

I see two possible behavior for :optional:
 1. it considers every "interactive" elements the user can fill which are not
required ;
 2. it considers only elements which can be required but don't have the
required attribute specified.

At the moment, the optional pseudo-class doesn't seem to follow any of this
rule. Indeed, "button" isn't an element the user can fill so, show it as
"optional" sounds weird. The same way, "input elements that are not required"
should be changed to "input elements for which the required attribute applies
but without the required attribute specified" so button, hidden, image, reset
and submit input types don't match the rule.

The difference between behavior 1 and behavior 2 is the the select element and
I'm wondering why it can't be required. It sounds reasonable to let it matches
:optional but it should be great to have it matches :required too. See bug

To summarize, button elements should not match the :optional pseudo-class nor
input elements for which the required attribute doesn't apply.

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Received on Friday, 30 April 2010 10:45:27 UTC

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