overthinkings
of Ruben Daniels
Archive for July, 2008
July 4, 2008 at 6:49 pm · Filed under Javeline
fig 1. Property Bindings.
With property binding you can define the way a property is calculated. This statement is usually based on a javascript expression including one or more properties on other objects. The value of the property will always be kept up to date. This means that when one of the dependent properties changes, the property is recalculated. See fig 1. for a graphical explanation.
Let me give you an example to make it a bit straightforward. This example sets the visibility of the slider based on the state of the checkbox.
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July 4, 2008 at 11:29 am · Filed under Javeline
fig 1. Model-view-controller.
I’m not someone that knows the intricate details of design patterns. Whilst trying to tell people how Javeline PlatForm works I’ve often used the MVC design pattern to describe the functions. It’s even in the JumpStart Guide. In writing this article I talked to Arnold Daniels, who friendly explained to me that I was completely wrong. He simply explained to me the basics of MVC, which instantly made it clear to me why it’s nearly impossible, if not impracticle to apply this design pattern to widget based GUI systems. Read the rest of this entry »
July 3, 2008 at 9:54 pm · Filed under Javeline
We had a nice presentation at JTeam’s Tech Meeting today. It wasn’t recorded on video, but I do want to share the slides, and the demo’s. JTeam is a Java oriented company that works a lot with the Spring Framework. They have quite some experience with GWT. For us a challenge to show them the benefits of Javeline PlatForm (JPF). We tried to show in particular how JPF can be used in a real production application.
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