On Wed, Jun 05, 2013 at 07:44:15AM +0100, Frank Shearar wrote:
> On 5 June 2013 00:02, David T. Lewis <lewis at mail.msen.com> wrote:
> > On Tue, Jun 04, 2013 at 01:20:36PM +0100, Frank Shearar wrote:
> >> On 4 June 2013 13:06, David T. Lewis <lewis at mail.msen.com> wrote:
> >> > On Tue, Jun 04, 2013 at 12:09:59PM +0100, Frank Shearar wrote:
> >> >> On 4 June 2013 12:05, David T. Lewis <lewis at mail.msen.com> wrote:
> >> >> >
> >> >> > MVC is supposed to be completely unloadable/reloadable. What is the other
> >> >> > reference to ST80 in the base image?
> >> >>
> >> >> Tools has extensions to ParagraphEditor, ScreenController and StringHolderView.
> >> >>
> >> >
> >> > I don't see the dependencies ... what am I missing?
> >>
> >> The *Tools method categories cause a dependency from Tools -> ST80
> >> because Tools requires those classes to exist.
> >>
> >> You can track the dependencies through the DependencyBrowser in the
> >> Apps menu off TheWorldMainDockingBar.
> >
> > I don't think I trust what the DependencyBrowser is telling us here. The
> > methods causing dependencies seem to be either methods that have matching
> > implementations in both Morphic and MVC, or methods that are referenced
> > from MVC menu picks. I don't think the dependencies are real.
> 
> I disagree. Tools is extending classes in ST80. Were you to unload
> ST80, you would rip out part of Tools.

You would be removing the '*Tools' extensions in the ST80 package, but
not anything that is directly part of the main 'Tools' package, right?

> 
> Or put it another way: take an image, unload ST80 and Tools, and then
> load Tools. I predict that loading Tools would fail, because it would
> say "I'm sorry Dave, I can't let you do that. I don't know about the
> classes ParagraphEditor, ScreenController and StringHolderView."
> 

I understand what you mean now. Yes you are right. ST80 can be unloaded
and reloaded, but there are methods categorized as '*Tools' in some ST80
classes, and presumably these would be a problem for loading Tools if those
ST80 classes were not already present. Or maybe the Monticello loader
knows how to handle this already?

I don't know if making a package like Tools fully independent of Morphic
and ST80 is a practical goal. There are also extensive dependencies of
Tools on Morphic. If the idea is to make Tools fully independent of the
Morphic/MVC user interfaces, it looks to me like this would be a big
challenge.

Dave

> frank
> 
> > So... I think that MVC remains safely unloadable and reloadable. The next
> > challenge is to get to the point where we can say the same about Morphic :)
> >
> > Dave
> >
> >