Disclaimer
The opinions expressed herein are my own personal opinions and do not represent anyone else's view in any way, including those of my employer.
© Copyright 2010
The opinions expressed herein are my own personal opinions and do not represent anyone else's view in any way, including those of my employer.
© Copyright 2010
I created a new MediaWiki extension titled “UK geocoding for Maps“, which I released yesterday.
The goal of this extension is to provide a way to display UK postcodes on Google Maps maps, by extending the Maps extension. Since obtaining geocoded postcodes for UK Postcodes via Google services is only possible using the Google AJAX search API, the standard geocoding infrastructure of Maps could not be used, and this extension should be seen as a sort of hack. Initial development for this extension was funded by Neill Mitchell for Prescient Software Ltd.
Version 0.1 is an experimental release, in which multiple issues are expected. I’m hoping to polish the whole extension a little more once I have some free time. Bug reports are welcome though.
You can get version 0.1 from SVN at
http://svn.wikimedia.org/viewvc/mediawiki/trunk/extensions/UKGeocodingForMaps/
Yesterday I released Maps and Semantic Maps 0.5.4. This is a minor update which mainly brings additional stability and security to the 0.5.x branch. It contains several bug fixes, a few code improvements and some security fixes. Check out the Maps change log and Semantic Maps change log.
The only new functionality is that you can now define OpenLayers layers in your LocalSettings file, as well as layer groups. This is done by modifying the $egMapsOLAvailableLayers, $egMapsOLLayerGroups and $egMapsOLLayerDependencies arrays, which are defined in Maps_Settings.php.
Another noteworthy point is that Semantic Maps now contains all the geographical coordinate format handling that was part of Semantic MediaWiki earlier on. The code has been removed from SMW itself, and the SMW 1.5 release will be the first one without it. A nice side effect of this is that people still using Semantic Google Maps (one of the extensions Maps and Semantic Maps are based on, which is now obsolete (and really should not be used any more!)) will be forced to switch over to Maps and SM if they want to get the latest SMW.
Both extensions now use Validator 0.2.2, which is a minor update to 0.2.1, which was used in 0.5.3.
Downloads
I’ve been working on the Wikimedia Storyboard extension for a week now, and like to provide the people who are interested in it with some more details about what the project goal is exactly, and what my current progress is.
The idea of the Wikimedia Storyboard is to develop a fundraising landing page on http://wikimediafoundation.org/ with moderated but up-to-date stories from users and donors explaining the role Wikimedia has played in their lives. The motivation of building such a landing page is that donor and supporter stories can help to convince and persuade people of the impact an organization is having. It’s essentially an extended, moderated version of the real-time contribution history.
Basically the extension can be divided into 3 separate parts:
The storyboard interface
The storyboard interface will contain several stories stacked vertically in a box that follows the “eternal load” paradigm, much like Google Reader. Each story will consist of a picture with some text next to it, and some “share” features for stuff like Facebook and Twitter. For people with a special storyreview permission there would also be a button allowing them to hide the stories from being displayed in the storyboard. This part of the UI will be implemented using the tag extension <storyboard/>. You can see a rough layout on the underneath mock-up (on the left).
Story submission interface
As the above image reveals, there will also be an interface where you can submit stories, that will be placed on the right of the storyboard itself, in a tab gadget, together with a donate page. Like the storyboard itself, this will be implemented using a tag extension: <storysubmission/>.
Story review interface
The story review interface will allow users that have the ’storyreview’ permission to review, edit, publish, and hide stories. Hidden stories could still be published later; they would simply be available through a separate queue. This interface will be implemented as a special page (Special:StoryReview), but will be transcludable, meaning it can be put into other pages.
My progress
Over the past few week, most of my dev time has gone to reviewing documentation about how to correctly create the desired features in the Storyboard extension. Things new for me include, tag extensions, special pages, database interaction, and permission management. I now also better understand some other stuff like how variables should be escaped properly, which I’ll be applying to Maps, Semantic Maps and Validator for their next release. I’ve set up the basic structure of the extension, as you can see on svn trunk, and am now working on creating the dynamic aspects of the interface using jQuery and jQuery UI.
Some stuff I’ll still have to review further at some point is how to make the stories searchable, how to best internationalize the stories and how I’ll implement the “share” features. I’m looking forward to getting more familiar with MW core though, and getting the hang of these things should not be to difficult with the awesome support I’m getting from the devs at the MW IRC.
As of today I’m working for the Wikimedia Foundation as developer. I have a 3 month contract, after which I’ll participate in GSoC 2010, and do a project for … well… Wikimedia Foundation 
(I’ll post more about GSoC 2010 later on, I have a really awesome project planned :d) Although the payment is pretty regular for this type of dev, I think it’s completely awesome to work for a mission based company with as objective to make knowledge freely available to everyone, create completely open source software and work with really enthusiastic and talented people.
The project I’m going to start with is the Wikimedia Storyboard, which will take the form of an extension. The idea is to develop a fundraising landing page on http://wikimediafoundation.org/ with moderated but up-to-date stories from users and donors explaining the role Wikimedia has played in their lives. The motivation of building such a landing page is that donor and supporter stories can help to convince and persuade people of the impact an organization is having. It’s essentially an extended, moderated version of the real-time contribution history.
I’m hoping to get this extension finished in a bunch less then 3 months, so I can also do other stuff before GSoC. I’ll only be working part time on this though (~3hours/day), and will also be doing work on Semantic MediaWiki for KIT as well as other projects, such as Maps and Semantic Maps
Today I released Maps and Semantic Maps 0.5.3. Both releases mainly include bug-fixes, some of which quite important:
I also discovered an oversight in the hook system of Maps, which is kind of a dormant bug, that could have caused errors for certain implementations of extensions to Maps. The oversight was that a mapping service does not necessary support a sub feature, like the parser function display_point, of a feature, like the parser functions. A check is now in place, together with a defaulting mechanism that also allows you to set the default per sub feature. I’m planning on changing this to a more recursive algorithm in the future though.
A last change is the adding of initial Google Maps v3 support. It’s only implemented for the display_map parser function, and has a rather limited set of customisation parameters at the moment, not to forget a whole load of issues. My conclusion from trying to implement this is that the GMaps 3 API is definitely not in it’s final state yet, since it’s lacking vital methods needed for basic functionality. The support for GMaps v3 is therefore sort of an alpha release, and won’t be put on the documentation page until it’s more stable and complete.
Downloads
As you can see, I changed the location of the releases from my forums to 2 brand new Google Code projects [ Maps, Semantic Maps ].
Over the last week I’ve done some effort to update the Maps usage examples on my wiki to match the current version of Maps. Since I hadn’t made any real change to them since 0.3, most examples where seriously outdated, and in some cases even caused people to use deprecated syntax. Now all Maps examples have been updated, the example pages have been restructured, and new navigation bars have been added.
You can check out the examples on the following pages:
A screenshot of the Maps documentation page:
I’m also busy with updating the Semantic Maps examples, but that’s still a work in progress.
It’s been quite a while since the last release, but 0.5.2 is finally here! It’s not a big release, but features quite some fixes and improvements in the area of marker and pop-up layout.
You can now specify the icon to be used for all markers for both display_point(s) in Maps and result formats in Semantic Maps. A template= and showtitle= parameter have been added to the result formats as well, allowing you to remove the title from a pop-up, and further specifying what should be shown, in which format, by using templates.
On this map you can see that several markers use different icons. This is now easier then in previous versions due to a bug fix.
This map is created by Semantic Maps by querieng some demo data on my wiki. The title of the location is hidden by setting showtitle=no, and the template parameter is used to have a nice little text with the queried data in it as pop-up, contents.
Downloads
I did a thorough overhaul of my wiki. I cleaned out the mess, put in some nice demo data, installed the latest version of Semantic Bundle, upgraded to MediaWiki 1.16alpha, put in a new logo and switched to the new (and awesome) vector skin. I also finally created decent templates and semantic data structures for my events and Semantic Maps demo’s.
Today I released Validator version 0.2, on which I’ve been working the last 2 days. It features massive rewriting to make it more flexible, and has some added functionality. Let’s have a look at what changed.
The most important change is, without any doubt, the new list support. Validator 0.1 had a list type, which allowed you to have enumerations of values and do crude validation on them. This version now supports lists of a type, instead of seeing list as a type. So you can now create lists of strings, lists of integers, and even lists of custom types you add. This new approach also allows per-item-validation and per-item-defaulting. This means you can set an in_array criteria, which will then be enforced for every value in your list. Closely related to this new form of list support are the new list criteria, which allow you to validate lists as a whole. At the moment the only 2 build in list criteria are item_count and unique_items, but like for regular criteria, you can hook into Validator and add your own.
Another important change are the output formats. Output formats allow you to specify additional formatting that needs to be done with the parameter value, before it is retrieved from Validator. There are currently 6 build in types, which are array, list, boolean, boolstr, string and unique_items, but again you can hook into this list via Validator. The awesome thing about output formats is that it greatly reduces the mess you otherwise have with converting your parameters from user input to true data structures. You can even specify multiple output formats, which will then do their formatting one by one.
Other things brought by Validator 0.2 include some new criteria (is_boolean, has_length and regex), a new error level, Validator_ERRORS_MINIMAL, new parameter types (boolean, number and char) and support for Validator_ERRORS_WARN in ValidatorManager.
Equally important as the changes made is that the documentation has been completely updated, to give in-depth cover of how Validator works, and how you should use it.
Both Maps and Semantic Maps 0.5.1 use Validator 0.2, allowing them to throw away a lot of repetitive, dumb manipulation, code that has been their since the initial versions of those extensions
Downloads:
Earlier today, versions 0.5 of Maps and Semantic Maps where released. Some mayor new features where added, and a whole bunch of things have been refactored. I also did some effort to improve the documentation by adding some screencasts and revising the developer docs. Version 0.4.2 proved to be pretty stable, since only 2 bugs have been found and fixed.
Let’s have a look at the new, awesome, functionality:
The list of all things that have been refactored is rather long, so I’ll only cover the most interesting things here:
As for documentation, I created 2 screencasts, both covering a different aspect of Maps. This way people can learn how to work with Maps in a more interactive way then just reading the documentation.
The developer documentation on how you can extend Maps using it’s hooks has been completely rewritten. This was needed since the previous version was created for Maps 0.3.3, since which a lot has been changed to the hook systems of Maps.
For a complete list of changes, see the Maps change log, and Semantic Maps change log.
Downloads:
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