[Qgis-developer] Python: groups in QgsLegendInterface()

[Chris Crook]

Hi Marco

I realise I've been very slow to reply.  Thanks for the pointer to this .. I see that you are using the same approach, basically the group id is the index of the group name in the groupLayerRelationship() list.  

This seems to work, but from an API point of view it does seem very indirect.  I haven't looked at the underlying code but I'd have thought it better for groups to have a unique id in the same way as layers, and to be able to use this to assign layers (and other groups?) to groups.  Not something I have time to consider at the moment :-(

Thanks
Chris

> -----Original Message-----
> From: Marco Bernasocchi [mailto:marco at bernawebdesign.ch] 
> Sent: Friday, 10 June 2011 7:51 p.m.
> To: Chris Crook
> Cc: qgis-developer-request at lists.osgeo.org
> Subject: Re: [Qgis-developer] Python: groups in QgsLegendInterface()
> 
> Hi
> On 06/10/2011 04:05 AM, Chris Crook wrote:
> > Hi All
> >
> > How can I determine the group index of a group containing a layer?
> >
> have  a look at [0] it is th data loader for my temporal data 
> plugin, It generates new groups and adds layers 
> programmatically. Please note that it is not possible [yet] 
> to nest groups deeper than a level due to the legend model.
> > Basically I'm creating a new layer, and wanting to add it 
> to the same group as a new layer. It looks like the only way 
> to add a layer to a group is via the group index.  But I 
> can't see any way to determine the group index of an existing layer.
> >
> > The nearest I've got is
> >
> >    [i for i,x in enumerate(legend.groupLayerRelationship()) if 
> > layer.id() in x[1]]
> >
> > But this doesn't work with nested groups.
> >
> > Any other suggestions?
> >
> > Thanks
> > Chris
> > 
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> Ciao
> Marco
> [0]
> http://hub.qgis.org/projects/multiview/repository/revisions/ma
> ster/entry/temporalrasterloaderdialog.py
> 
> 
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