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<p>Hi folks, <br>
</p>
<p>Cuis does not come with the legacy MVC framework. From what I
read even the Smalltalk coming with MVC offers a revisited
version, ok may be not the Squeak one. Nevertheless it does not
really matter if you want to develop a GUI application with Cuis
because all you need is to use the observer pattern and view
enriched with control, both present in Cuis.<br>
</p>
<p>Indeed, this pattern has seen since then alternate design. For
DrGeo, I pick up a different pattern, MVP, back in 2005. According
to its promoters, MVP fixes MVC flaws, you can read further about
that on related articles below.</p>
<p>In a few word, with MVP, the model informs its views using the
observer pattern, so the model does not know about its view, as in
MVC. The views also handle the low level controls, then informs
the Presenter to take action at the model level. This part is
different than MVC and offer more flexibility.<br>
</p>
<p>In DrGeo there are a lot of different Models: domain of the
application, the math items, the smalltlak sketch, the script, the
macro, etc. Most of them with dedicated Views of different nature
to display, design, etc the models. Then a bunch of Presenters,
with different level of complexity : domain application presenter,
tools to manage the user interaction on the canvas and builder to
manage the process of constructing a math item.</p>
<p>All in all, I don't see any reason Cuis can not be used to design
a complex GUI application. I have reworked the DrGeo code and
class categories to make it easier to understand the different
levels of responsibility in the application. In repo but not
released in app yet though.</p>
<p><a moz-do-not-send="true"
href="https://drive.google.com/file/d/1jWC7yLw8Q6sZeoq__m7K27vyOT8Dn55I/view?usp=sharing">Dolpin
Smalltalk article about MVP, </a><br>
</p>
<p><a moz-do-not-send="true"
href="http://www.wildcrest.com/Potel/Portfolio/mvp.pdf">Article
from the original designers of MVP</a></p>
<p>Wikipedia:
<a class="moz-txt-link-freetext" href="https://en.wikipedia.org/wiki/Model%E2%80%93view%E2%80%93presenter">https://en.wikipedia.org/wiki/Model%E2%80%93view%E2%80%93presenter</a></p>
<p>Hilaire<br>
</p>
<p><br>
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