Day: March 29, 2008

ACID3 and my head hurts

Post author By Shelley Powers
Post date March 29, 2008

Again, I congratulate the browser teams who have passed the Acid3 and have only one more thing to say:

Don’t ever do that again.

I’m right in the middle of going through the proofs for Painting the Web, and I’m having to make proof modifications to code and writing because both Safari and Opera are feverishly changing their source in order to “meet” the Acid3 test. However, I don’t know, for sure, if all the changes will end up in the next released version of the browsers, or if they’ll be shunted off as a branch for inclusion in a later browser version after further refinement.

A better approach would be to list out all of the Acid3 tests and create a roadmap of planned implementation, ie the functionality in test 1 will be included in Opera 9.5, the functionality in test 2 in Safari 4.0, and so on. It may lack the glamour of displaying a passed test results, but it plays less havoc on those writing documentation, testers, book writers, and other people who have ended up being tossed about, like so much flotsam, by the Acid3 hurricane, and are now feeling particularly bruised and battered.

Please don’t do an Acid4. I don’t know if I can survive it.

WordPress 2.5 releases

Post author By Shelley Powers
Post date March 29, 2008

Recovered from the Wayback Machine.

WordPress 2.5 has released, including the bad markup generated with the Gallery option. If you serve your pages up as XHTML, the gallery won’t work for you. You will get invalid markup errors, the page will fail to load. Whether this can be fixed with a plug-in or not, I don’t know.

I’ve been told that if I don’t like the code, shut up, and *fix it myself. Leaving aside the “shut up” part, the issue isn’t just one problem in one piece of code–it has to do with a mindset. Last time I looked, you can’t submit a bug patch to change a mindset.

I did turn in a bug about the Gallery markup, and really did expect it to be fixed. Two people involved in WordPress 2.5, Jeffrey Zeldman and Matt Mullenweg have professionally benefited by their association with WaSP and the standards movement. If I seemed harsh in my previous writing on this, it is because I really did expect better from both Jeffrey and Matt. I think, though, my expectations don’t match today’s reality. Today’s reality is XHTML is out, HTML5 is in. HTML5 is much more marketable. HTML5 is sexy, HTML5 is hot, HTML5 sells.

I know many of my readers are tired of me bringing up standards and XHTML. On and on–I have become dull with repetition. Heck, I’ve just become dull. Several people have pointed out the draconian error handling of XHTML, how HTML5 is friendlier, and will “make things better”. HTML5 will make the web more “semantic”. HTML5 is the way of the future.

How can the web be better, though, when people who do know how to create valid web pages, choose to not do so because frankly they just can’t be bothered? How can HTML5 make the web more meaningful, when it can’t even guarantee something as simple as accuracy of syntax? As the spec is now, HTML5 is also a closed box, with no way to add something new, something different. With XHTML, I can add SVG, or RDF, or NextBigVocabulary, or ShelleysSecretSauceVocab, and it works, out of the box. You can’t do that with HTML5. Is HTML5 really a way forward? Or just a way for application developers to continue dishing out crap–but gee wiz, look, you can store data on the client now. And if you make a mistake, you won’t kill kittens, because goodness knows, every time Firefox displays the Yellow Screen of Death, God kills a kitten.

I once before referred to today’s attitude about standards as being a race to the bottom. I made this statement because standards support is seemingly a thing of the past, a quaint relic of a previous web generation. The new web, the 3.0 web, the semantic web can’t be bothered with the old, the measured, and the fusty, when now is a time of quick ideas and even quicker implementations. Open Social! Open Data! Microformats! All you need now, is an idea and an audience. It doesn’t have to be a good idea, either, but it does have to have a big audience.

It is what it is, and I don’t have enough audience to impact much beyond my immediate vicinity. Thankfully for the riders of tomorrow’s web, when they do reach the bottom, HTML5 will be there, waiting for them. And who knows, I could very well be all wrong about all of this. Rather than a race for the bottom, perhaps this is a race for a baseline, and I just perceive the baseline to be less than what I think it can be. Perhaps I do reflect an era that is dead and gone and either I should adapt to move with the tide, or get out of the boat.

Well, I’ve not been particularly good at floating with the current in the past, so the only option for me is get out of the boat–or at a minimum, go find my own boat to row. I am going to do the WordPress folks a huge favor: I won’t continue using WordPress, no matter how pretty the new look, or how cool the new features. The WordPress developers have made too many decisions about how I should run my site, including HTML5 over XHTML, microformats over RDF, the canvas element over SVG, and so on. I find I just don’t want to follow the course they’ve deemed appropriate for the future. Or, to continue my nautical metaphor, we’ve reached an equatorial point, and WordPress wants one horizon and I want another and now, regretfully, we must part.

I am not unmindful of how much I owe the WordPress team for an application I’ve benefited from for several years. To the WordPress team, my sincere thanks for the use of your application, and your hard work in the past. WordPress has been both fun, and useful. Good luck with your future voyages.

*If you want to use the Gallery yourself and you serve your pages up as XHTML, you can fix the gallery page so that it doesn’t break in the browser with this PHP file. Just rename it to media.php and overlay the one in wp-includes. You’ll also have to turn off automatic entry formatting, too, because WordPress will insert paragraph elements erroneously. The Text Control plug-in will help you with turning off auto formatting, and it works with WP 2.5. The generated layout also plays havoc with IE8, at least with my layout. Your mileage may vary.

The generated markup still isn’t valid because of adding a stylesheet into the gallery within the page body, but with the changes I just detailed, at least it doesn’t kill a kitten.

Technology Web

IE8 and breaking the web

Post author By Shelley Powers
Post date March 29, 2008

Recovered from the Wayback Machine.

Another break between IE7 and IE8 is the support for opacity.

In previous versions of Internet Explorer, Microsoft used its own custom filters in order to implement opacity. This has been known for some time and libraries manage opacity for old and new browsers by using code like the following, in JavaScript:


// cross-browser adjust opacity function
function setOpacity(obj,val) {
  obj.style.opacity = val;
  obj.style.MozOpacity=val;
  obj.style.KhtmlOpacity=val;
  val*=100;
  obj.style.filter = "alpha(opacity="+val+")";
}

It’s a trick that takes advantage of JavaScript’s dynamic prototyping to “set” any possible combination of opacity properties, including the CSS3 opacity, the older Mozilla opacity, as well as IE’s opacity filter. Of course now, we can pretty much drop anything but the CSS3 opacity, and the IE filter:


// cross-browser adjust opacity function
function setOpacity(obj,val) {
  obj.style.opacity = val;
  val*=100;
  obj.style.filter = "alpha(opacity="+val+")";
}

This will work with IE6 and IE7, but not IE8. The reason why is that Microsoft dropped implementation of a proprietary functionality called hasLayout, which the company’s opacity filter was dependent on (at least, that’s what I’ve read). This is good, because hasLayout is a Bad Thing.

Unfortunately, this also “broke the web” in that Microsoft, in IE8 beta 1 at least, didn’t bother to replace the now missing opacity filter with support for the CSS3 opacity filter. True, CSS3 isn’t a “released spec” yet, but every other browser–Firefox, Safari, and Opera–supports CSS3 opacity.

I’ve explored the online discussions related to IE8 and opacity, and there are rumors that the long handled Alpha opacity filter will work, but I’ve not found that this to be true, and I’ve not found anything at Microsoft on a workaround.

At this time, and to the best of my knowledge, to get opacity to work with IE8, you’ll have to add the IE compatibility meta tag:



<meta http-equiv="X-UA-Compatible" content="IE=7" />

You put this meta element right after the title element. Of course, you lose the “good” standards stuff that comes with IE8 if you do this. It’s a damned if you do, damned if you don’t situation: either opacity doesn’t work with IE8, or you lose the stuff that does work correctly with IE8.

I’m also finding another problem with IE8: adding an onclick event handler to a DIV element seems to only be sensitized to whatever content is in that element, not the element itself. So if you have centered text in the DIV element, only the text is sensitized to the onclick event, not the entire block.

This impacts on many Ajax applications, including most accordion functionality, and not just on mine. For instance, Rico’s Accordion widget doesn’t work with IE8 if the person clicks anywhere but the text. To recapture this functionality, you’ll again have to use the compatibility meta tag.