Difference between revisions of "alternates-brainstorming"

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* A drawback is that it departs from existing idioms for microformats.
 
* A drawback is that it departs from existing idioms for microformats.
 
* A plus is that the same method can be applied to other variants of the Alternates microformat.  Let's say you have some MF that depends on a class "photo" to distinguish which one of multiple IMG elements is the alternate, you can declare the OL or UL with class="photo alternates".
 
* A plus is that the same method can be applied to other variants of the Alternates microformat.  Let's say you have some MF that depends on a class "photo" to distinguish which one of multiple IMG elements is the alternate, you can declare the OL or UL with class="photo alternates".
* Another plus is that the technique can extend out to more than one item per option, like if there must be both a photo and a location; that would be <ul class="photo location alternates" />
+
* Another plus is that the technique can extend out to more than one item per option, like if there must be both a photo and a location; that would be &lt;ul class="photo location alternates" />
 
* I have one real doubt.  If we're inventing a new syntax to extend the Alternates MF even before the ink is dry, I'm not certain it is adding anything except a hint to help search engines understand the page.  I have to think about that issue a bit more.
 
* I have one real doubt.  If we're inventing a new syntax to extend the Alternates MF even before the ink is dry, I'm not certain it is adding anything except a hint to help search engines understand the page.  I have to think about that issue a bit more.
 +
 +
[[User:DavidJanes|David Janes]]:
 +
* I love the fact that it can be applied to other MFs. For example, you could do something like this to express alternate vcards for the same person...
 +
 +
<pre><nowiki>
 +
<ol class="vcard alternates">
 +
  <li><div class="vcard">vcard 1</li>
 +
  <li><div class="vcard">vcard 2</li>
 +
</ol>
 +
</nowiki></pre>
 +
 +
* ... that said, it'd probably be best to run this past everyone else, as it does change the way parsing would happen. Perhaps it's only valid for inner elements?
  
 
= See Also =
 
= See Also =

Revision as of 10:54, 18 November 2005

Introduction

This page is to talk about alternates, that is, places where a user may be given several different items to choose amongst that at some logical level are considered equivalent.

Discussion Participants

Editor

Authors

Interested Folks

Brainstorms

Strawman 1

<fieldset>
 <a href="example.mp3" type="audio/mpeg">MP3 alternative</a>
 <a href="example.wav" type="audio/wav">WAV alternative</a>
 <a href="example.mov" type="video/quicktime">MOV alternative</a>
</fieldset> 

XHTML Sample

Discussion

Strawman 2

   <select id="entryN">
     <option value="example.mp3">MP3 alternative</option>
     <option value="example.mov">WAV alternative</option>
     <option value="example.wav">MOV alternative</option>
   </select> 

XHTML Sample

Discussion

Strawman 3

<div class="altgroup">
 <a class="alternate" href="example.mp3" type="audio/mpeg">MP3 alternative</a>
 <a class="alternate" href="example.wav" type="audio/wav">WAV alternative</a>
 <a class="alternate" href="example.mov" type="video/quicktime">MOV alternative</a>
</div> 

Discussion

Strawman 4 (lists)

An example of a list that expresses no preference.

<ul class="altgroup">
 <li><a href="example.mp3" type="audio/mpeg">MP3 alternative</a></li>
 <li><a href="example.wav" type="audio/wav">WAV alternative</a></li>
 <li><a href="example.mov" type="video/quicktime">MOV alternative</a></li>
</ul> 

An example of a list that expresses a preference (i.e. first is best, last is worst)

<ol class="altgroup">
 <li><a href="example.mp3" type="audio/mpeg">MP3 alternative</a></li>
 <li><a href="example.wav" type="audio/wav">WAV alternative</a></li>
 <li><a href="example.mov" type="video/quicktime">MOV alternative</a></li>
</ol> 

Discussion

  • this rocks, though I'm a little indifferent to altgroup. The only downside is that 'loosely coupled' alternates may not be covered; on the other hand, this may not be so much of an issue. We will know more from the examples -- David Janes

Strawman 5 (lists + explicit alternator)

This varies #4, explicitly stating what is being alternated. Let's say we're trying to express "location". If there was no alternates, we'd just say:

<a href="example.mp3" class="location">MP3</a>

Now, let's say that we have multiple choices. Here's what I think it should look like:

<ol class="location alternates">
  <li>
    <a href="example.mp3" class="location">MP3</a>
    <br />
    I ripped this one using <a href="...">iTunes</a>
  </li>
  <li>
    <a href="example.wma" class="location">WMA</a>
    <br />
    I ripped this one using <a href="...">Windows Media</a>
  </li>
</ol> 

Discussion

David Janes:

  • "alternates" indicates there's a bunch of choices to follow
  • "location" appears multiple times because ...
  • "location alternates" indicates we're _composing_ the alternates MF with "location"

Lucas Gonze:

  • I fiddled around with CSS and javascript to support this and found it was pretty easy to work with. That's a big plus.
  • A drawback is that it departs from existing idioms for microformats.
  • A plus is that the same method can be applied to other variants of the Alternates microformat. Let's say you have some MF that depends on a class "photo" to distinguish which one of multiple IMG elements is the alternate, you can declare the OL or UL with class="photo alternates".
  • Another plus is that the technique can extend out to more than one item per option, like if there must be both a photo and a location; that would be <ul class="photo location alternates" />
  • I have one real doubt. If we're inventing a new syntax to extend the Alternates MF even before the ink is dry, I'm not certain it is adding anything except a hint to help search engines understand the page. I have to think about that issue a bit more.

David Janes:

  • I love the fact that it can be applied to other MFs. For example, you could do something like this to express alternate vcards for the same person...
<ol class="vcard alternates">
  <li><div class="vcard">vcard 1</li>
  <li><div class="vcard">vcard 2</li>
</ol>
  • ... that said, it'd probably be best to run this past everyone else, as it does change the way parsing would happen. Perhaps it's only valid for inner elements?

See Also