More work on settings editor

[3nids]

• move QgsSettingsEditorWidgetWrapper to core
• allow to specify a specific editor for a setting
• fix crash with use of PyQgsSettingsEntryEnumFlag in settings tree widget
• Python implementation of enum settings editor widget wrapper (df21a64)

[github-actions]

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[nyalldawson]

move QgsSettingsEditorWidgetWrapper to core

I'm -1 to this -- it's definitely a GUI focused class, and is full of qwidget references. Why should it be in core?

[3nids]

To be able to set an editor for a setting (and avoid creating a registry for this).

It follows the same logic than QgsEditorWidgetWrapper which is in core. Then all the implementations are in gui.

There is no GUI includes in the header, and only QDialog and QWidget in the source.

[nyalldawson]

@3nids

That still screams of bad API to me. I personally think a registry in the GUI lib would be the correct approach

It follows the same logic than QgsEditorWidgetWrapper which is in core. Then all the implementations are in gui.

Actually, it's in GUI. The field config class is in core but that doesn't directly reference widgets at all

[3nids]

OK, I'll have another look. In the mean time, I opened another PR with the still relevant stuff.