[squeak-dev] Object>>currentProjectWorld

David T. Lewis lewis at mail.msen.com
Sat Nov 25 14:48:00 UTC 2017


Hi Marcel,

Yes, putting the method(s) in Project class would be better than having
than Object>>currentProjectWorld. But we already have Object>>currentWorld
that actually refers to ActiveWorld rather than World, so if we add
Project class>>currentWorld to represent World, it would probably just
add confusion.

That leaves me stuck for a good name, because Project class>>currentWorld
would conflict with the meaning of the existing Object>>currentWorld,
and Process class>>world would confict with the meaning of the existing
Morph>>world.

Probably it is best to do nothing at this point. The Project current
world idiom is messy but it least is does mean what it says.

Dave


On Sat, Nov 25, 2017 at 08:59:53AM +0100, Marcel Taeumel wrote:
> Hi Dave,
> 
> the term "current" in "currentProjectWorld" seems not appropriate for "Project current world" because it is not dynamically scoped like #currentWorld. Also it is not Morphic-API. Would thus be confusing in the long term.
> 
> Assuming that currentEvent, currentHand, and currentWorld are in a *Morphic extension, what about adding "Project class >> #currentWorld" instad? Let's not spoil the Object interface more than necessary. :-)
> 
> Best,
> Marcel
> Am 25.11.2017 03:36:13 schrieb David T. Lewis <lewis at mail.msen.com>:
> In Object method category *Morphic-Kernel, we currently have three methods:
> 
> Object>>currentEvent
> "Answer the current Morphic event. This method never returns nil."
> 
> Object>>currentHand
> "Return a usable HandMorph -- the one associated with the object's current environment."
> 
> Object>>currentWorld
> "Answer a morphic world that is the current UI focus."
> 
> I want to suggest adding one more method:
> 
> Object>>currentProjectWorld
> "Answer a morphic world for the current project."
> ^Project current world
> 
> Rationale: In the course of removing direct references to the global variable
> World, there are now numerous repetitions of the "Project current world" idiom.
> If these are replaced by "self currentProjectWorld", the code is a bit more
> readable, and the references to Project current world are easier to find. This
> should also make the distinction between #currentWorld and #currentProjectWorld
> easier to understand.
> 
> Is it OK if I add this method, and replace the current "Project current world"
> usage with "self currentProjectWorld" throughout?
> 
> Dave
> 
> 

> 



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