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Charles Jolley

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We have good news for anyone using the experimental polymorphism framework from within SproutCore. You’ll be glad to know that it has now made its way into the official datastore framework as part of SC.Record. If you have been using this framework, you’ll be even more glad to learn that polymorphic records are now significantly faster and more memory efficient. As well, this change includes a critical bug fix that resulted in polymorphic records getting mismatched when their id was changed. For those interested in what this change means, here’s how it works. First, if you’re not familiar with polymorphism, it’s similar to inheritance, but differs in that polymorphic subclasses share a common “identity”. Here’s what that means with respect to the data model. In typical inheritance, the subclasses inherit the traits (attributes) of their superclass, but they can’t s... (more)

"From where we sit now, the code is shaping up quite nicely. Soon enough, if you have a SproutCore..."

“From where we sit now, the code is shaping up quite nicely. Soon enough, if you have a SproutCore app, you’ll be able to just drop an editor right into your app. As of today, anyone with a website can grab a copy of Bespin and include the editor component very simply in their pages. We figure that we’ve got another month of work to do before we’re ready to update bespin.mozilla.com. We have a whole bunch of features to port over from the old code and we need to make good on another big part of the Reboot promise: opening Bespin up for plugins. It’s been hard even for Bespin core... (more)

Aspect-Oriented Programming and You

One of the coolest parts of the new SproutCore View layer is its ability to use aspect-based programming to add behaviors to views. Aspect-based programming is built on the premise that often objects that don’t follow from the same class hierarchy may in fact need similar behaviors. This is especially true in GUI programming when designers come to you and say something like “I came up with this new widget - it looks kind of like a progress bar but it acts like a button when you click on it”. In SproutCore, you capture these common behaviors in a “mixin”.  A mixin is just a colle... (more)

Introducing Ace

When I first put together SproutCore, I created a purple-colored theme to style buttons, checkboxes, and so on.  The idea was to create a placeholder theme just until we could get something real done. I’m happy to say that SproutCore 1.0 will retire the purple theme in favor of a new theme called Ace.  Ace was initially contributed to SproutCore by Cocoia.  It is now included using the new theme support. If you don’t want to use Ace, that’s OK.  You can write a theme of your own.  If you do like Ace but you’d like to refine it a bit, you can do that too.  The entire theme, inclu... (more)

CSS and HTML Color Picker for Mac OS X

CSS and HTML Color Picker for Mac OS X : Hat tip: Daring Fireball ... (more)