Iliad: LTR vs RTL

Hi again,

Before I start reinventing the wheel, is there any consolidated way to
switch between Right-to-Left and Left-to-Right layouts (as in English
vs Arabic) in Iliad? I have more problems in this area, but the only
urgent one is this.

Our users may change UI language at any time, so (to remain within
Joachim Jaeckel's structure) I need to switch css in #pageUpdate AND
to change the layout in #pageTemplate, depending on the layout chosen
in the session.

Yet, this kinda looks like a problem just any CMS will have, so I
suppose there should be a way to manage it implemented or planned in
Iliad. So I'd rather check before producing lotsa duped code. I will
have to make extensions to this mechanism anyway, as we are requested
to manage (the heck knows how, at the moment) less common layouts,
like bottom-down (American Sign Language and Traditional Chinese use
them). But that part looks like of much lesser general interest, so I
sadly don't expect to find any "readymade" for it.

PS we are not making a CMS. We are making a huge dictionary from any
to any language. But the problems are ~ the same, in terms of UI
localization.

Berto

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On Wed, 29 Jul 2009 16:30:18 +0300
Bèrto ëd Sèra <[hidden email]> wrote:

> Hi again,
>
> Before I start reinventing the wheel, is there any consolidated way to

hehe ... sorry. Iliad itself is only slowly consolidating, as the recent
introduction of the head shows. Just like the rest of us, you might end
up being the one who's planting the seed of something that could become
a "best practice".

> switch between Right-to-Left and Left-to-Right layouts (as in English
> vs Arabic) in Iliad? I have more problems in this area, but the only
> urgent one is this.
>
> Our users may change UI language at any time, so (to remain within
> Joachim Jaeckel's structure) I need to switch css in #pageUpdate AND
> to change the layout in #pageTemplate, depending on the layout chosen
> in the session.

If the instructions within the contents method (which is what I assume
you're referring to) depend on session properties, parametrize it by
using one of several builders.

  Object
    PageBuilderForMyApp
      LTRBuilderForMyApp
      RTLBuilderForMyApp
      TopDownBuilderForMyApp
      ScreenReaderUsableBuilderForMyApp

You could set up a LookupTable mapping language to builder class and then
use something akin to

  content [
    ^ [ :e |  self builderClass buildOn: e  ]
  ]

Later,
s.


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