[whatwg] Menus, fallback, and backwards compatibility: ideas wanted
mattraymond at earthlink.net
Thu Dec 1 15:10:14 PST 2005
Lachlan Hunt wrote:
> Matthew Raymond wrote:
>>Lachlan Hunt wrote:
>>>AIUI, the difference between them can be illustrated as follows:
>>> <cmd> <!-- Menu command item -->
>>> <button/> <!-- [Label] for command menu -->
>>> <select/> <!-- The menu items -->
>>> <li> <!-- Menu list item (e.g. navigational list) -->
>>> <menulabel/> <!-- Label for nav menu -->
>>> <menu/> <!-- The menu items -->
>> You're mistaken. The <button> caption actually isn't the menu label
>>in many cases.
> Since the button itself wouldn't actually be visible in WA1 UAs, it's
> really only there for fallback, why can't it be used as the menu's label?
Because, semantically, it's not actually a label for the <select>. In
fact, semantically, the two controls are only related indirectly via the
>> You would only use the button for submission. Here's a
>>stripped down version of what Ian has on his weblog:
>>| <form action="./" method="get">
>>| Jump to
>>| <select name="start"/>
>>| <input name="order" value="-1" type="hidden">
>>| <input name="count" value="5" type="hidden">
>>| <input value="Go" type="submit">
>> Also, as you point out, the <input> element could be used instead. So
>>you'd need either a <label> or child text, as you see Ian using above.
> Why? <input type="submit"> is still a button, what difference does it
> make from the button element?
It doesn't matter if it's a <button> or an <input type="submit">,
because neither have label semantics for anything external to themselves.
> But, if you really don't like overloading the use of the button as the
> menu label as well, then I guess we could add a label, but I think just
> using the button itself has the advantage of less markup and if the
> button isn't required to get the menu, authors won't bother including
> it, which reduces accessibility.
You could use the <button> as a menu label if the <label> is absent,
but the web author should not be required to use the <button> as a
label, because that forces them to use inferior fallback. The button as
a label in a fallback scenario just doesn't seem that common to me.
>>| <menulabel for="menu1">Label Text</menulabel>
>>| <menu id="menu1">
> We already have <label> for form controls, I don't think we need a new
> element for that especially when it's basically still associating a
> label with a form control. I also think you're overloading the use of
> the menu element too.
The <menulabel> is associated with a menu, so unless you have a
opposition to that, I don't see your point. It can be argued, however,
that the overloading of <menu> is undesirable, I agree.
> Do you like the structure of any of these alternatives? (with the actual
> element names still up for discussion)
> 1. <cmd>
> <button>Jump to</button>
Works, though not ideal.
> 2. <cmd>
> Jump to <select/>
This works. A <label> would provide better fallback semantics, though.
> 3. <cmd>
> <label>Jump to <select/></label>
This is fine.
> 4. <cmd>
> <label for="jump">Jump to</label>
> <select id="jump>/>
> 5. <cmd>
> <label>Jump to <select/> <button>Go</button></label>
No. This has the same implicit association problems we spoke of
earlier, and it's unnecessary, since <cmd> establishes any relationships
between the elements that we need.
> 6. <label>
> <cmd>Jump to <select/> <button>Go</button></cmd>
If <cmd> is not a form control, they you're semantically overloading
<label>. You're also using <label> in a way that's similar to
<menulabel>, which could confuse web authors. If we merge the two, we
still have the problem of <label> calling menus that aren't technically
form controls, thus overloading <label> in a clearly semantic way.
> 7. <label for="jump">Jump to</label>
> <cmd id="jump">
Ditto here as well.
>> Hmm... Is there really a use case where we'd be using <select>
>>elements for submenus?
> Not that I can think of, but select elements could have submenus using
> the optgroup element, as currently described in the spec.
That's true, and they have multiple levels if you allow <optgroup>
>>Not menus, mind you, but menus within menus. If not, then we could
>>drop <cmd> from the list of possible children for <menu> while
>>keeping the element itself.
> I don't understand your logic behind this.
If there isn't a use case for having <cmd> as a direct child of
<menu>, why allow it to be the direct child of <menu>??? Furthermore, if
<cmd> supports multiple submenu levels, you can just use it for the
whole menu structure rather than a submenu. (Or, <cmd> could be require
to be a child of <li>. See below.)
> Why does <command> need to be a child of menu at all? It's really more
> of an abstraction, rather than a physical control for the user to use.
> Wouldn't it be better for them to be declared within the <head> or early
> within the <body> and then referenced by other controls as needed?
Actually, I was thinking the same thing. Hence my comments about it
looking like the XUL element, which I believe to be similar. If you can
create some good examples and/or use cases for this, I'll probably back
you on that one.
| <li command="cmd_in_head1">Menu Item 1</li>
Hmm. In that case, could we just require <li> like we do for <ul> and
<ol>? Perhaps even replace <menu> with <nl>, making it more like the
XHTML 2.0 element?
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