Pharo4Stef wrote
> I’m trying to understand how we could work together to share forces on
> cleaning morphic.
Yes, this will be my focus for 4.0 and I've been thinking a lot about it.
I've spent the last few weeks studying Cuis, Self, and the L and KS stuff
from vpri.
These are some of the experiments I want to do:
1. infinite world a la Self
2. remove all global references i.e. ActiveWorld, World, and ActiveHand
3. possible remove the concept of mouse and keyboard focus entirely. This is
what Self does and it seems much cleaner. There would just be mouse and
keyboard subscribers and a Morph, let's say a text editor, would "take focus
away from itself" e.g. when there was a mouseDown outside it's bounds
4. Local co-ordinates
5. Simplified layouts (maybe based on Cuis or Lesserphic)
6. Cuis CPU-saving UI loop
7. Direct Morph construction leading to e.g. Spec models
I don't think the cross-cutting problem will be so bad because there doesn't
seem to be much work at this low-level. So our slices will go stale, but
should be easily merge-able.
I think the safest way to proceed would be:
1. Hypothesis - write up our ideas about how Morphic currently works
2. Experiment - write tests for the current behavior
Once we have a theory about existing Morphic, we can repeat. e.g.
3. Hypothesis - coordinates should be local to owner Morph
4. Experiment - pick a Morph far from core i.e. nothing used in development
tools and apply. See how it works, if it makes things more clear
Now hopefully we'll have a theory that local coordinates will improve the
system, and we apply it to the whole system:
5. Set up a hook to easily plug the new behavior in and out. e.g. (pseudo
code)
NewClass class>>#enable
Smalltalk at: #ExistingClass put: NewClass
NewClass class>>#disable
Smalltalk at: #ExistingClass put: OldClass "where OldClass is a class
var"
Maybe we can even put an error handler in the UI loop so that errors
automatically unplug the new code.
Anyway, just some preliminary ideas...
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Cheers,
Sean
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