[Seaside] Seaside vs. Aida
stephane.ducasse at free.fr
Sun Mar 30 20:14:24 UTC 2008
ok I see
but could you show the code of the multicounter example that nicolas
because I could not see how you got the 4 counters in a row.
On Mar 30, 2008, at 9:33 PM, Janko Mivšek wrote:
> Hi Stef,
> Let me first rename topic to Seaside vs. Aida, because that's more
> appropriate to the Lucas blog post anyway. He pointed to other
> "traditional" frameworks, not Aida :)
> stephane ducasse wrote:
>> Now I think that there is room for seaside and aida side by side.
>> It would be nice if both frameworks would mention their own limits.
> > It seems that in Aida you cannot easily embed multiple times the
>> same component on a page.
> Ok, let me start explaining Aida's component model more broadly,
> because it seems that is one of major misunderstandings when
> comparing both frameworks. Reason seems to be simply in naming and
> nothing more.
> In Aida we have a WebElement which start covering primitive elements
> like images, links or text, and ends up to the whole web page.
> WebElement can namely be a composite of sub elements down to
> primitive ones. We have therefore a consistent component model from
> a web page down to primitive elements.
> Just recently we started using a name "component" and introduce a
> class WebComponent (which is currently just an empty subclass of
> WebElement) to more clearly separate components from mere elements.
> But where elements end and components begin, that's now a question.
> Components are supposed to be a standalone, reusable, heavy
> ajaxified parts of web page, but that's already every web element in
> Aida! Introduction of WebComponent class is therefore currently more
> conceptual than practical, but we hope it will evolve in
> practicality through the time.
> Let me allow to make a short comparison with a Seaside component
> model. Here a web page is a root component and you can have also
> subcomponents (children). So far so good, we are the same.
> First difference is how those components (say web pages) are
> connected and how user navigates among them, another difference is
> how both component models continue building a web page down to a
> primitive elements. Let we look at later for now.
> In Seaside you start painting a component, using a hierarchy of
> blocks. In Aida you continue building with smaller and smaller
> WebElements. Aida therefore continue using consistently the same
> component model down to the lowest level of web pages: basic text,
> images etc.
> One of the consequences of this consistency is how long are methods
> in Aida. You'll see that almost all are short, inside 10 line
> recommendation. I think this shows well the strengths of Aida
> component model. Other is maybe that users find Aida easy to use.
> Let me finish with a component model example. That's how it looks a
> page creation method for squeak.org demo http://
> squeaksite.aidaweb.si :
> | e t |
> e := WebElement newId: #container.
> self headerElementTo: e.
> t := WebElement new.
> t table width: 1; cellSpacing: 0; cellPadding: 0.
> t cell valign: #top. t cell table cellSpacing: 0; cellPadding: 0.
> t cell cell add: self menuElement. t cell newRow.
> t cell cell add: self linksElement. t cell newRow.
> t cell cell add: self sideLogosElement.
> t newCell valign: #top;
> add: self bodyElement. "contents"
> t newCell valign: #top. t cell table cellSpacing: 0; cellPadding: 0.
> t cell cell add: self downloadsElement. t cell newRow.
> t cell cell add: self newsElement. t cell newRow.
> e add: t.
> ...then header element:
> headerElementTo: e
> e add: self headerLinksElement.
> e add: self headerTitleElement.
> e add: self headerActionsElement.
> e add: self headerSessionElement.
> ... and finally login part in up right corner:
> | e |
> e := WebElement newDiv.
> self session isLoggedIn
> [e addText: self app session user nameSurname, ' | '.
> e addLinkTo: self site admin text: 'Logout' view: #logout]
> [e addLinkTo: self site admin text: 'Login' view: #login].
> Best regards
> Janko Mivšek
> Smalltalk Web Application Server
> seaside mailing list
> seaside at lists.squeakfoundation.org
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