[Kmymoney-devel] QML Interfaces

[Christian Dávid]

Am Sonntag, 10. August 2014, 10:59:24 schrieb Alvaro Soliverez:
> The main issue preventing us from a migration to QML is the sheer
> number of pages we have in the application. It's simply a lot to
> migrate, and QML in KDE is still a moving target. I haven't seen an
> application as big as KMyMoney in QML yet.

Very right, migrating all widgets at once is not possible. But can I start 
with new things I make? Especially list views with custom delegates are easier 
to write in QML and the user will not notice a difference. Later we can move 
more and more when needed — or someone wants to. Porting dialogs will probably 
not make sense in near future.

> Next issues are:
> - Too much business logic in UI, which should be moved to core classes
You are right, but this is not an issue of qml.

> - Most data is not using models, much less a MVC approach.
I like the MVC (or in Qt it is just MV) approach, it makes a lot of stuff 
cleaner and easier to understand. Moving some stuff to models can solve the 
previous problem.

> - Customs controls that will have to be migrated to QML
You are right again. But at the views mentioned above I rarely need custom 
controls.

> - Developers involved will have to have a grasp of the application
> domain (It can't be random people who develop in QML)
Sure, you are right.

> - It's all or nothing, you can't have QWidgets and QML together. At
> least not in a stable release
Well, you can have QML inside QWidgets, but not the other way round. Even in a 
stable release. It can look strange if not done correctly, that's the biggest 
issue.

Actually I smuggled such an dialog into the add-onlinebanking branch: the tan 
input with chipTan: QWidgets are used to create everything except the chipTan 
flicker filed which is written in QML.