Is there a way to display Spec widgets in a ListModel?

Hi everyone,

I can't find how to display Spec widgets in a ListModel, is it possible?

I would like to have a list model holding, at each row, a TextModel and
a ButtonModel.

Thanks in advance,

Julien

I never tried anything like this, I do not think it is possible.

What you are trying to do seems strange to me, what is the use case you want to implement?



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Johan Fabry   -   http://pleiad.cl/~jfabry
PLEIAD and RyCh labs  -  Computer Science Department (DCC)  -  University of Chile

I would like to have a ListModel holding objects I can edit a value
using the TextModel and apply my modification using the ButtonModel.

Julien

On 02/03/16 21:31, Johan Fabry wrote:

This: [1] is what I would like to do.
I found it in  an old thread: [2] but it is a prototype. I wondered if
there was an object able to do it in the framework :-)...

Julien

Links:
[1]: http://ijintek.fr/wiki/doku.php?id=spec_examples#listview_example
[2]: http://forum.world.st/Spec-question-td4741608.html#a4747231

On 02/03/16 21:31, Johan Fabry wrote:

On 02/03/16 21:31, Johan Fabry wrote:
> I never tried anything like this, I do not think it is possible.

That is what a MultiColumnListModel should be able to do (but can't)
It is probably better to extend the FastTableModel.

> What you are trying to do seems strange to me, what is the use case you want to implement?

Representing objects and actions on them in a list?
And we want that in a matrix and tree too, not just linear.

Stephan

For me, a list should just hold ‘dumb’ items where the kinds of actions you can do are limited to e.g. a simple context menu. Otherwise if you need complex actions or multiple nested widgets et cetera, the ListModel implementation and API will become too complicated.

I instead think that what you want is something that should be taken care of by dynamic spec:
(1) you make a ComposableModel subclass that holds all the widgets for one item of your list,
(2) you make your own ‘list widget’ that uses dynamic spec to dynamically add/remove instances of (1) in a one column layout.

Note that I have never tried this. As far as I understand, this should mostly work. When there will be a need for a vertical scrollbar I don’t think it will appear. If this is the case, dynamic spec should be extended with this support.

I think that in general, dynamic spec and layouting of widgets could benefit of some work. But this is a complex topic and I do not have the time to tackle it, sadly.



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Johan Fabry   -   http://pleiad.cl/~jfabry
PLEIAD and RyCh labs  -  Computer Science Department (DCC)  -  University of Chile