define('DISALLOW_FILE_EDIT', true); Kevin Newman – Page 9 – unFocus Projects – Kevin Newman and Ken Newman

SwfHTML and FlashPlayerInfo, the extra stuff in History Keeper

Well I guess it’s not really hidden, as much as it’s a tag along to unFocus.History Keeper. I’ve had an interesting (to me anyway) battle in my own head about whether to even continue maintaining SwfHTML and it’s companions SwfCommunicator, and FlashPlayerInfo, since there are many solutions to the problems they address out there already (including ExternalInterface for SwfCommunicator, which is actually built right into Flash Player 8 and up). I even decided a while ago to just stop, and start using SwfObject, UFO, or the new SwfFix (just found that yesterday, looks good!), yet, they are still here and I’m still working on them.

SwfObject, and now SwfFix, are just too integrated for my taste, too monolithic. That is not meant to disparage the work that has gone into those projects, those projects are quite mature, well documented, and widely distributed. It’s just tha tI like my code certain way, and have bent over backwards to keep interdependency down in my scripts, in the name of modularity. This was done originally so that the history portion could be used in combination with other SwfEmbed techniques (like SwfObject) and used with other plugins (Ajax came later, but it works for that too!). Examples of that modularity – History Keeper doesn’t rely on SwfHTML, and SwfCommunicator doesn’t rely on SwfHTML, SwfHTML doesn’t rely on FlashPlayerInfo, which as well as Patent Magic don’t rely on anything. A few of the above rely on unFocus.EventManager, but that’s because the subscriber pattern is just so darn useful.

History Keeper would work nicely right along side SwfFix as well. Wouldn’t complain one bit. 🙂

Anyway, I just wanted to make a quick (re)introduction to these infrequently mentioned tools, even if they are in a bit of rough shape. For simplicity, I’ll lump them all under the category title SwfHTML (even though SwfCommunicator, or FlashPlayerInfo could all be used without the SwfHTML object pretty easily).

Check it out.

Share This sans-prototype.js

I had a planed to replace the use of Prototype.js in the Share This WordPress plugin, since that was the only plugin using it. Prototype is quite large, and my server isn’t currently set up to gzip javascript files. I started to replace it with jQuery, and add an option to switch between the two. I figured it’d be a good way to help make the blog load more quickly if I make sure all the plugins were using the same (smaller) JavaScript framework.

I found along the way that Share This doesn’t actually use very much of Prototype.js at all. It does a few id based element queries, and uses Prototype’s Position.cumulativeOffset once. So I just converted the dollar sign based id query with DOM standard getElementById, and replaced the cumulativeOffset method call. Then removed the bits that output a prototype.js header link.

That’s it. No more bulky prototype.js dependency!

You can grab the patch from the WP Plugins trac.

While I was at it, I also added gzip support for the js, css and static share-this page, along with a new flag to turn gzip on and off.

Here’s the gzip support patch.

If you’d rather skip all the patching, here is a prepatched share-this.php archive. To use it, download the Share This plugin, and overwrite share-this.php with the new one (patched against the latest from SVN as of this post date).

Adobe CS3 Install Headache and IE 7 Beta Remnants

I just finished four days of trying to install Adobe CS3, and I thought I’d mention what the problem was (or more accurately, what the solution was, since I’m not entirely sure what the root cause was), in case it will save someone else the trouble.

First let me say, Adobe‘s technical support is top notch. They stayed on the phone with me for hours grasping at straws until we hit that magic fix. Kudos to the Adobe tech support.

The problem I was having was one where the installer would go through the initialization screen, then would go away – it would just disappear, and sometimes leave the Setup.exe (not the case) in my processes list. There is a tech note for that problem, which the tech support guys pointed out to me, but that didn’t solve the problem in my case (and I very thoroughly hunted and killed every single everything that has ever been even related to Adobe and Macromedia – and that includes all Flash Players – which is what that tech note is about).

As it turns out, the Adobe setup program relies on Internet Explorer and the installed Flash Player (although it does seem to try to upgrade it). It was frankly a bad idea on the part of the installer engineers at Adobe to rely on this third party – easy to screw up by end users – software, and all the possible points of failure that comes with using that. I suppose, in fairness, if those technologies are not working for the installer, they probably will not work for the applications once they are installed either. Still, because of the nature of this installer failure, it was incredibly difficult to pinpoint the exact cause of the failure. It might have been easier to figure out why, say, Dreamweaver would not start. Maybe in the next installer, if Adobe really wants demonstrate that it eats its own dog food in critical places, they’ll use Adobe Air running in Ubuntu, and cut out the reliance on IE, but I digress.

The solution for me was to uninstall IE 7. The theory is that I either had a beta version still installed from way back when, or that some remnants of that beta were still hanging around. Whatever the case, I uninstalled it, and then, finally, after 4 days, the installer worked. A few other hiccups later (like not being able to choose a different drive if you start the install from the hard drive but want to continue from the DVD with disc 2, ugh), I finally have an installed Adobe CS3 Master Collection! And a day later, I now have all the software I tore out of my system in a desperate attempt to get the installer to work (which is cool in an odd way, since I had quite a bit of garbage on my work machine).

Even though downgrading back to IE 6  fixed this particular problem, I’m still not convinced that was the root cause of the problem. It seems that at some point after I started preparing my computer for CS3, I lost the ability to install updates, and to even install the Flash Player ActiveX control. It just wouldn’t work (I wish I would have noticed that earlier – since it was a huge clue). Even after downgrading to IE 6, it still wouldn’t let me install some Windows update or the Flash Player ActiveX control. I traced that to a problem with registry key permissions, and I have no idea what caused that (probably some program that I uninstalled, is my guess). After jumping through hoops to get IE 7 to install (restarting and installing in Safe Mode finally worked), hoping that would fix the problems with IE – which it didn’t, I used Ramesh Srinivasan’s registry permissions reset guide to finally get things working in IE again (thanks!).

So there it is, if you are having this mysterious problem with the setup disappearing after the initialization window disappears, you might be having a problem with IE7, it’s ability to install Flash and/or problems with registry permissions. I should note, that the problem existed for all CS3 installers, including the trial installers.

Case Insensitive Permalinks Plugin for WordPress

For a while I have been creating and sending links to History Keeper to http://www.unfocus.com/projects/HistoryKeeper/. When I moved that page into WordPress the URL became lower case, and case sensitive. This can be a problem for those used to Windows and IIS non-case sensitive URLs. To get around the problem, I added a hack to my 404.php error handler (more on that later) that would detect capitals in the permalink URL, convert it to lowercase, and then forward the user to the new page with a php Location header (http redirect). That seemed like a clunky solution, so I made a WordPress plugin that does pretty much the exact same thing, only it’s in a plugin! So that makes it less clunky. Well whatever.

Here’s the code:
[cc lang=’php’ ]
< ?php /* Plugin Name: unFocus.Insensitivity Plugin URI: http://www.unfocus.com/projects/ Description: A plugin to make permalinks case insensitive. Version: 1.0a Author: Kevin Newman Author URI: http://www.unfocus.com/projects/ */ function unFocus_insensitivity() { if (preg_match('/[A-Z]/', $_SERVER['REQUEST_URI'])) { $_SERVER['REQUEST_URI'] = strtolower($_SERVER['REQUEST_URI']); $_SERVER['PATH_INFO'] = strtolower($_SERVER['PATH_INFO']); } } add_action('init', 'unFocus_insensitivity'); ?>
[/cc]
Pretty simple really. Honestly, it doesn’t really even need to use a WordPress hook, just the two lines that convert the $_SERVER variables would do it (assuming those aren’t locked down in the php.ini). But I wanted to learn the plugin API anyway. There is an archive download at the end of this post, just unzip the enclosed file, and put it in your plugin directory, upload it and turn it on. No other configuration necessary.

If there is any interest, I was thinking about adding a config option that would allow you to either forward to the all lowercase URL, or to do what it does now, which is to behave pretty much the way IIS does for any other static files it hosts.

Also, if there’s interest, I may try to figure a way to work this WordPress IIS Permalink 404 handler into the plugin, if it’s possible (IIS users would set their custom 404 handler redirect URLs to redirect to /wordpresslocation/index.php instead of /wordpresslocation/404.php, which is how you do it now):
[cc lang=’php’ ]
< ?php $_SERVER['REQUEST_URI'] = substr( $_SERVER['QUERY_STRING'], strpos( $_SERVER['QUERY_STRING'], ':80' ) +3 ); $_SERVER['PATH_INFO'] = $_SERVER['REQUEST_URI']; include('index.php'); ?>
[/cc]
The archive – unFocus.Insensitivity

Update: Fixed the download link.

Ajax Calendar – Widgetized

Update: This information applies to Giraffe AJAX Calendar 2.3.1. AJAX Calendar 2.4 was released on September 3, 2007. This information is incompatible with that new version.

Update 2: It seems that this new version is supposed to simply replace the functionality of the old Calendar, without requiring any extra work (so you’d just use the old Calendar Widget, and get the new functionality after the plugin is enabled). So far, I haven’t been able to get the Ajaxy stuff to work, although I can tell that it’s installed, because the calendar is wider in this theme with the new Calendar plugin.

While surfing the web aimlessly, I came across the Urban Giraffe Ajax Calendar plugin for WordPress. It’s not set up to take advantage of WordPress’s built-in Widget support, so I thought I’d add the necessary bits to make it work. Here’s how to do it.

Download the plugin, and add the following code to the bottom of ajax-calendar.php:
[cc lang=’php’ ]
function giraffe_ajax_register_widget() {

if ( !function_exists(‘register_sidebar_widget’) || !function_exists(‘register_widget_control’) )
return; register_sidebar_widget(‘Ajax Calendar’, ‘ajax_calendar’);

}add_action(‘plugins_loaded’, ‘giraffe_ajax_register_widget’);
[/cc]
Additionally, you can avoid a duplicate prototype.js header link, by replacing these lines:
[cc lang=’php’ ]
if ($giraffe_ajax_prototype)
add_action (‘wp_head’, ‘giraffe_ajax_head’);
[/cc]
with these:
[cc lang=’php’ ]
if (function_exists(‘wp_enqueue_script’))
wp_enqueue_script(‘prototype’);
else if ($giraffe_ajax_prototype)
add_action (‘wp_head’, ‘giraffe_ajax_head’);
[/cc]
You can see it working in my sidebar. And I didn’t even have to modify this theme. 🙂