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
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 collection or properties and methods that are added to your class
when you define it. The view layer will actually look for specific hooks on
your mixin so that you can automatically hook into the drawing engine, listen
for events, etc. It’s very powerful.
Take the example above: with the button... (more)
Interesting points on using pseudo-classical inheritance pattern vs the
SproutCore is pseudo-classical based, just like Closure, primarily because of
memory concerns. Nice to see folks at Google went down the same direction.
SOA & WOA Magazine
Bruz Marzolf is writing a series of blog posts implementing a simple time
tracking app in various client-side rich web app frameworks. He just finished
his example in SproutCore and including some source code.
Here’s what he had to say:
SproutCore provides a higher level abstraction that manages when objects are
changed and need to be updated, and when they’re busy and shouldn’t be
modified, for instance.
Bruz’ code is a good example of a basic starter app that’s a little more
complex than our todos demo. I’m looking forward to his additional entries
in this s... (more)
I was recently asked to do a write-up about my SproutCore app,
Hubbub (@hubbubapp), as a general anecdotal guide to those interested in
writing large scale applications in SproutCore for the first time.
I’m afraid this first post won’t be very technical, but I will at least
attempt to make it an enjoyable read, and to tell you about some of my early
bumps in the road so that you can avoid them. My overview of Hubbub will also
span a few posts, so if you have particular questions, I can spend some time
on them in future.
What’s all the Hubbub?
This isn’t the place to talk up the a... (more)
The coding portion of SproutCore 1.0 is nearly complete, so it’s time to
start work on some of the non-code parts of the SproutCore project.
Today I just push a brand new version of the SproutCore website. The design
is very simple, but unifies the wiki, blog, and main site so that they
finally feel like they belong together.
We still have a lot more to do with the site before 1.0. (More on that
later) But, the really interesting thing about the site is how it was
First, the new website uses SproutCore’s build tools. Over the last few
years these tools have been honed... (more)