[whatwg] Select elements and radio button/checkbox groups [Was: Form Control Group Labels]
ian at hixie.ch
Fri Apr 24 15:09:47 PDT 2009
On Thu, 4 Dec 2008, Markus Ernst wrote:
> This CSS3 module is indeed an interesting approach, anyway I don't see
> in this spec how possible conflicts between the form structure and it's
> presentation can be avoided or handled. Start with:
> <select name="gender">
> <option value="f">Female</option>
> <option value="m">Male</option>
> Now you can easily change the presentation into a radio button group,
> which is fine:
> <select name="gender" style="appearance:radio-group">
> But then an author does this:
> <select name="gender" style="appearance:checkbox-group">
> Now there is a conflict, as the form structure allows only a single
> selection, while the presentation allows a multiple one.
It's not clear that the underlying element can actually get multiple
selections here (I would argue it cannot); but this is an issue for CSS3
UI, not for HTML5.
> This does not only affect the rendering of the element and the reaction
> to user actions, but is even likely to break the handling of the
> submitted value, as server-side handlers often expect either a single
> value or an array of values and are not configured to cope with both of
A conforming browser wouldn't send values that violate the rules HTML5
describes, which in this case prevents the scenario you describe,
regardless of the presentation layer.
Ian Hickson U+1047E )\._.,--....,'``. fL
http://ln.hixie.ch/ U+263A /, _.. \ _\ ;`._ ,.
Things that are impossible just take longer. `._.-(,_..'--(,_..'`-.;.'
More information about the whatwg