[Pharo-project] Questions about ToolSet

Schwab,Wilhelm K bschwab at anest.ufl.edu
Tue Feb 2 19:45:28 EST 2010

As long as you make it no harder for me to use the old inspector, I'm open to just about anything.  No arguement that toolsets in their current form are strange.

From: pharo-project-bounces at lists.gforge.inria.fr [mailto:pharo-project-bounces at lists.gforge.inria.fr] On Behalf Of Mariano Martinez Peck
Sent: Tuesday, February 02, 2010 6:00 PM
To: Pharo Development
Subject: [Pharo-project] Questions about ToolSet

Hi folks. I found I big problem with the way ToolSet works or at least with the way I think it works.  Right now, there is the class ToolSet with certain methods like API and then a class side method to register a XXX ToolSet as default.  So, we have for example, the StandardToolSet which implements/overrides some of the methods of ToolSet. Of course, that ToolSet (StandardToolSet) is the default. Evaluate ToolSet default and you will get that one. Becuase that is done is StandardToolSet class >> initialize

Now...the first question,  why  StandardToolSet doesn't extend from ToolSet ? shouldn't that be better ?

Anyway, this is the big problem. The only way right now to change the toolset is to create a new class and register it. Suppose I want to install NewInspector and put in the ToolSet that now, the inspector to use is NewInspector instead of old Inspector. The only way I see right now is to create  new class and implement the method inspectorClassOf:  As you can see, NewInspector had to do that in class NewInspectorToolSet. They had to create that class just to implement that method and register it...

Now, suppose I want to install shout, and I want to say that the default workspace is SHWorkspace (shout one), not the normal one. Ok...easy, I do the same of the NewInspector (but changing the method openWorkspace instead of inspectorClassOf:) ....but...I cannot register 2 toolsets. So, I have or NewInspectorToolSet or ShoutToolSet. Of course, this has no sense AT ALL.

So, my proposal is to change ToolSet, so that any tool can change certain things, without needing to do that. Examples:

For example, in StandardToolSet, we have:

StandardToolSet >> openWorkspace
    Workspace open

I would change that for something like:

StandardToolSet >> openWorkspace
    (Smalltalk at: #WorkspaceClassName) open

Of course Smalltalk at: #WorkspaceClassName  must be initialized the first time with something like Smalltalk at: #WorkspaceClassName put: Workspace

I don't like the name WorkspaceClassName, we should look for better names.

Then, I can just have a post do it when loading Shout that evaluates:

(Smalltalk at: #WorkspaceClassName put: SHWorkspace)

Here there is no need to create subclasses neither to register a new toolset.

Ok...this is an example, but the idea is to apply this to most cases.

What do you think ?


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