MVC revival plans for Aida
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Dear all,
Next spring will be 30 years of Smalltalk-80 and even more years of MVC [1][2] as currently the hottest pattern specially in JavaScript world. Just look at all those client-side JS web frameworks like Backbone, Ember, Angular, Knockout...[3]. A perfect time therefore to upgrade Aida's MVC to the current bleeding edge. Well, if we Smalltalkers were on MVC first, we need to catch JS guys and be first again :) So, my two-step plan is as follows: -- 1st step: Introduce a dependency mechanism as known from first MVC implementations from 80s on VisualWorks [1]. Dependency mechanism in a sense that all views dependent of some value update automatically after this value change. Currently we need to update them manually, with statements like: field onChangePostAndUpdate: someElement -- 2nd step: Move dependency mechanism to client-side so that all updates of dependent views will be done locally, without server needed. Only value change will be sent to the server. This will speed up web apps substantially, specially the mobile ones. After achieving the second step we are on a path to even more standalone client-side web apps. Aida will generate them on the server and send to the client, then 'disconnect'. Apps will therefore run autonomously and connect back to the server just from time to time to synch data changes. Here (if not for 2nd step already) Amber is what we can count on. So, that's my current brainstorming, with 1st step quite advanced in the head already, it could be that it will be ready for implementation soon. Best regards Janko [1] A Description of the Model-View-Controller User Interface Paradigm in the Smalltalk-80 System http://www.itu.dk/courses/VOP/E2005/VOP2005E/8_mvc_krasner_and_pope.pdf [2] Historical papers from Trygve Reenskaug, inventor of MVC http://heim.ifi.uio.no/~trygver/themes/mvc/mvc-index.html [3] Rich JavaScript Applications – the Seven Frameworks http://blog.stevensanderson.com/2012/08/01/rich-javascript-applications-the-seven-frameworks-throne-of-js-2012 -- Janko Mivšek Aida/Web Smalltalk Web Application Server http://www.aidaweb.si _______________________________________________ Aida mailing list [hidden email] http://lists.aidaweb.si/mailman/listinfo/aida |
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Interesting thoughts.
Juan implemented in Cuis a way as in Visual Smalltalk, the comment of ActiveModel class follow: The new event model, originally from VisualSmalltalk.
This includes #when:send:to: and friends, in Object (generic implementation) and ActiveModel (optimized implementation). It renders the old change/update mechanism in Object and Model as obsolete, although still used.
I found it very interesting to develop desktop stuff, so simple, so straightforward.... 2012/12/16 Janko Mivšek <[hidden email]> Dear all, _______________________________________________ Aida mailing list [hidden email] http://lists.aidaweb.si/mailman/listinfo/aida |
Re: MVC revival plans for Aida
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In reply to this post by Janko Mivšek
That sounds good, and excellent positioning for Aida. I have been
rather pre-occupied with moving to the USA recently, but expect to
be able to contribute in the New Year.
On which note, I send my best wishes to the Aida Community for the coming festivities. Nicholas On 16/12/12 06:54, Janko Mivšek wrote:
Dear all, Next spring will be 30 years of Smalltalk-80 and even more years of MVC [1][2] as currently the hottest pattern specially in JavaScript world. Just look at all those client-side JS web frameworks like Backbone, Ember, Angular, Knockout...[3]. A perfect time therefore to upgrade Aida's MVC to the current bleeding edge. Well, if we Smalltalkers were on MVC first, we need to catch JS guys and be first again :) So, my two-step plan is as follows: -- 1st step: Introduce a dependency mechanism as known from first MVC implementations from 80s on VisualWorks [1]. Dependency mechanism in a sense that all views dependent of some value update automatically after this value change. Currently we need to update them manually, with statements like: field onChangePostAndUpdate: someElement -- 2nd step: Move dependency mechanism to client-side so that all updates of dependent views will be done locally, without server needed. Only value change will be sent to the server. This will speed up web apps substantially, specially the mobile ones. After achieving the second step we are on a path to even more standalone client-side web apps. Aida will generate them on the server and send to the client, then 'disconnect'. Apps will therefore run autonomously and connect back to the server just from time to time to synch data changes. Here (if not for 2nd step already) Amber is what we can count on. So, that's my current brainstorming, with 1st step quite advanced in the head already, it could be that it will be ready for implementation soon. Best regards Janko [1] A Description of the Model-View-Controller User Interface Paradigm in the Smalltalk-80 System http://www.itu.dk/courses/VOP/E2005/VOP2005E/8_mvc_krasner_and_pope.pdf [2] Historical papers from Trygve Reenskaug, inventor of MVC http://heim.ifi.uio.no/~trygver/themes/mvc/mvc-index.html [3] Rich JavaScript Applications – the Seven Frameworks http://blog.stevensanderson.com/2012/08/01/rich-javascript-applications-the-seven-frameworks-throne-of-js-2012 --
Nicholas Moore _______________________________________________ Aida mailing list [hidden email] http://lists.aidaweb.si/mailman/listinfo/aida |
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Hi Nicolas,
Thanks for encouragement and best wishes. Same for you and also good luck with your move. Best regards Janko Dne 18. 12. 2012 18:03, piše Nicholas Moore: > That sounds good, and excellent positioning for Aida. I have been rather > pre-occupied with moving to the USA recently, but expect to be able to > contribute in the New Year. > > On which note, I send my best wishes to the Aida Community for the > coming festivities. > > Nicholas > > On 16/12/12 06:54, Janko Mivšek wrote: >> Dear all, >> >> Next spring will be 30 years of Smalltalk-80 and even more years of MVC >> [1][2] as currently the hottest pattern specially in JavaScript world. >> Just look at all those client-side JS web frameworks like Backbone, >> Ember, Angular, Knockout...[3]. >> >> A perfect time therefore to upgrade Aida's MVC to the current bleeding >> edge. Well, if we Smalltalkers were on MVC first, we need to catch JS >> guys and be first again :) >> >> So, my two-step plan is as follows: >> >> -- 1st step: Introduce a dependency mechanism as known from first MVC >> implementations from 80s on VisualWorks [1]. Dependency mechanism in a >> sense that all views dependent of some value update automatically after >> this value change. Currently we need to update them manually, with >> statements like: >> >> field onChangePostAndUpdate: someElement >> >> -- 2nd step: Move dependency mechanism to client-side so that all >> updates of dependent views will be done locally, without server needed. >> Only value change will be sent to the server. This will speed up web >> apps substantially, specially the mobile ones. >> >> After achieving the second step we are on a path to even more standalone >> client-side web apps. Aida will generate them on the server and send to >> the client, then 'disconnect'. Apps will therefore run autonomously and >> connect back to the server just from time to time to synch data changes. >> Here (if not for 2nd step already) Amber is what we can count on. >> >> So, that's my current brainstorming, with 1st step quite advanced in the >> head already, it could be that it will be ready for implementation soon. >> >> Best regards >> Janko >> >> [1] A Description of the Model-View-Controller User Interface Paradigm >> in the Smalltalk-80 System >> http://www.itu.dk/courses/VOP/E2005/VOP2005E/8_mvc_krasner_and_pope.pdf >> [2] Historical papers from Trygve Reenskaug, inventor of MVC >> http://heim.ifi.uio.no/~trygver/themes/mvc/mvc-index.html >> [3] Rich JavaScript Applications – the Seven Frameworks >> http://blog.stevensanderson.com/2012/08/01/rich-javascript-applications-the-seven-frameworks-throne-of-js-2012 >> >> > > -- > > *Nicholas Moore > * > > > > _______________________________________________ > Aida mailing list > [hidden email] > http://lists.aidaweb.si/mailman/listinfo/aida > -- Janko Mivšek Svetovalec za informatiko Eranova d.o.o. Ljubljana, Slovenija www.eranova.si tel: 01 514 22 55 faks: 01 514 22 56 gsm: 031 674 565 _______________________________________________ Aida mailing list [hidden email] http://lists.aidaweb.si/mailman/listinfo/aida |
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