re-introduce Ecore registration UI and autoregister nature

[dvojtise]

Before switching to eclipse, the GEMOC studio was using diverse commons libraries. (https://github.com/diverse-project/tools/tree/master/commons-eclipse/org.eclipse.emf.ecoretools.registration.ui)
These libraries contains 2 useful features :

• register ecore (popup menu + view)
• a builder nature that allows to automatically register all ecore files present in the project.

these features were not copied directly to gemoc commons because it is partly redundant with code in ecoretools (https://github.com/eclipse/ecoretools/tree/master/org.eclipse.emf.ecoretools.registration)
Ecoretools actually contains an early version of diverse commons code (that I have developed several years ago)
It would be interesting to contribute the newest version directly into ecoretools.

[dvojtise]

This feature is really useful when working with concurrency tooling (ocl/moccml editor works better with it)

[ebousse]

Not sure to clearly understand the situation. Do we simply need to add ecoretools.registration to the GEMOC Studio, or is there more to do?

[dvojtise]

Yes, more or less, the proper way would be to contribute to ecoretools projet itself, but my experience to submit there prove to be a long process even for tiny PR. In the meantime, a copy of what we had in the past would do the job until we properly push it in ecoretools project

[dvojtise]

Another point to be aware before contributing or adding a copy in our repos is that an early version of the api part of the ecore registration is supposed to be already in ecoretools project see https://github.com/eclipse/ecoretools/tree/master/org.eclipse.emf.ecoretools.registration

but it doesn't seem to be installed in the studio 😞

This early version doesn't has the autoregister builder, but only the manual register action.

[dvojtise]

Mhmm this component is actually compiled by ecoretools but not included in any feature and then not available in the their update site : http://download.eclipse.org/ecoretools/updates/releases/3.2.0/neon/plugins/?d

[dvojtise]

question opened on ecoretools forums: https://www.eclipse.org/forums/index.php/t/1093853/

[dvojtise]

old post related to the issue:
https://bugs.eclipse.org/bugs/show_bug.cgi?id=220218
https://www.eclipse.org/forums/index.php/m/417941/#msg_417941

[dvojtise]

Bug opened https://bugs.eclipse.org/bugs/show_bug.cgi?id=537295 with corresponding gerrit queries implementing it.

Now waiting for review from EcoreTools project commiters

[dvojtise]

when this feature will be there, we can also change the text in http://download.eclipse.org/gemoc/docs/nightly/K3FSM-example.html#_add_textual_editor

and instead of replacing the import (from nsUri to platform schema ) in order to use xtext smoothly, we can simply add the autoregister nature to the project containing the ecore

[dvojtise]

done and included in PR #118