[Qgis-developer] How to refresh the legend from a plugin

[Jürgen E. Fischer]

Hi Marco,

> >PS: I also noticed that some functionality could be moved from gui/app
> >classes to core classes to be more useful to plugins. E.g. what
> >QgsUniqueValueDialog::changeClassificationAttribute() does could be
> >moved to QgsUniqueValueRenderer
> 
> The extension of the plugin interface (as done in your patch) is the way to 
> go. Moving the content of QgsUniqueValueDialog::changeClassificationAttribute() to 
> QgsUniqueValueRenderer is not possible, because the renderer classes (in core 
> lib) are not allowed to have any dependencies on gui classes (e.g. legend).

Sure, not as is, but like in the attached patch.


Jürgen

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