[PyQt] Creating custom widget for designer

[Florian Bruhin]

Hi,

* Jorge Tornero <jtorlistas at gmail.com> [2014-08-21 04:59:10 +0200]:
> Dear all,
> I've created a  custom widget which can be used from within designer-qt4,
> following the few recipes available out there.
> 
> It works as expected but, because I'm not a pro, I'm looking for some
> advice on the way I've implemented the widget.
> 
> Basically: the base class is a QLineEdit in which a key event triggers a
> Qdialog which has customized QComboBox inside. Therefore I've implemented
> the widget as a single  class in this fashion (simplified)
> 
> class myLineEdit(QLineEdit):
>    class myPopupDialog(QDialog):
> 
>         class myCustomCombo(QComboBox):
>                (Definition of myCustomCombo goes here)
>        (Definition of mypopupdialog goes here, including some customcombos)
> 
>     (Defi ition of mylineedit goes here including key event handler
> that execs a mypopupdialog)
> 
> This, say so, class-!nesting schema is very strange to me, so let me
> ask you if this is a correct way of implementing such widgets,
> providing they're going to be used as designer plugins.
> 
> Thank you very much for your advice

I don't know anything about designer plugins, so this is more from the
general Python perspective:

This certainly works - I sometimes use it for small helper functions.
It seems like it works fine with classes as well.

However, IMHO it would be cleaner to just define multiple classes in a
module, all on the toplevel, like this:


class myCustomCombo(QComboBox):
   (Definition of myCustomCombo goes here)


class myPopupDialog(QDialog):
   (Definition of mypopupdialog goes here, including some
    customcombos)


class myLineEdit(QLineEdit):
    (Definition of mylineedit goes here including key event handler
     that execs a mypopupdialog)


Florian

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