[Pharo-project] A new GUI visual designer

Stéphane Ducasse stephane.ducasse at inria.fr
Mon Feb 14 21:41:30 CET 2011


What is happening if the class of your application UI gets a new variables or if a superclass changes its structure?
May be in objective-C you have to resave your nib?

Stef


> Just a comment: :)
> 
> The Interface Builder of Nextstep and Mac OS X –  a closely Smalltalk-related and inspired system – creates the objects making up the user interface (it instantiates them) and then saves the state of everything into a nib/xib file (binary/xml) using the general object-persistency mechanism of Cocoa (NSKeyedArchiver). This file is then loaded when the application in question starts, all the freeze-dried objects in the UI-file are revived (awakened – not created) and then loaded into the object space of the app. 
> 
> This reminds me of the way, the Smalltalk Image works – except that the image stores the whole application object space where the nib/xib only stores the objects the interface is composed of. With Morphic there even exists an easy way to compose an interface with using original objects directly like or better than Interface Builder. 
> 
> But instead of using the image as a storage mechanism for the instantiated objects of a morphic-designed interface we are stuck with the textual distribution mechanism and discussing how we can for example use xml to do that.
> 
> That is ironic, I think ^^
> 
> --
> Sent from my DynaBook. 





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