[Qgis-developer] Legend group API

[Andreas Neumann]

 Hi,

 I would like to see such an improved legend interface. Currently the 
 group and layer index even behaves differently between version 1.8 and 
 version 1.9. I have to check the version and decrease the index in case 
 it is version 1.9.

 I use this horrible code to find a group and attach a new layer:

 --------------------
 		#get the current group index of Schüler group
 		groups = []
 		for group in self.legend.groupLayerRelationship():
 			groups.append(group[0])
 		groupIndex = groups.index(groupName)
 		#move new layer to existing group
 		if QGis.QGIS_VERSION[0:3] >= "1.9":
 			groupIndex -= 1
 		self.legend.moveLayer(schoolDistrictLayer, groupIndex)
 -------------------

 Really horrible - this really should be a one-liner ... and not a 
 different behavior between QGIS versions for no good reason.

 Andreas

 On Tue, 11 Dec 2012 11:11:33 +0100, Sandro Santilli wrote:
> On Tue, Dec 11, 2012 at 08:56:16AM +0100, Sandro Santilli wrote:
>
>> One option would be to store an unique identifier in each 
>> LegendGroup object
>> and use that identifier for all lookups. There would be a counter 
>> within
>> each Legend incremented everytime a new group is added. Would this 
>> break
>> any existing usage ? Are there tests for this in place ?
>> The advantage of this is that the interface of addGroup and 
>> moveLayer would
>> not change.
>
> I've a patch ready implementing a model similar to the above
> (only difference is that the counter is a static within the group 
> class)
>
> https://github.com/qgis/Quantum-GIS/pull/351
>
> Feedback welcome
>
> --strk;
>
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-- 
 --
 Andreas Neumann
 Böschacherstrasse 10A
 8624 Grüt (Gossau ZH)
 Switzerland