Hi Devs,
I'm thinking about using our national catalog server (csw) together with
next-gis csw plugin to preview available WMS layers.
Making it easier to 'preview' a wms-service from a csw (catalog
service), I thought to make it possible to kickstart the addwms dialog.
That is:
1) start it with only a wms-url (NOT in its current connectionlist)
2) make it do a normal getcapability request and show available layers
3) user can then view a layer by clicking on one of the layers and
choose 'add' (the normal way)
But I encountered some problems trying to do that. Please correct me if
I'm wrong or (if you can) provide an alternative for my strategy:
If I understand correctly my plan is not working. Because in the normal
way to create/add a new wms connection, QGIS makes it store the
connection information into the global Settings, so this 'connection'
are for example available when you are going to add a layer.
But I thought to NOT store these connections, because I do not want to
pollute my wms connections with all kind of connections I may not want
to keep. Besides this, coming from a csw dialog, I have not given a name
to the connection yet also.
Another problem for me seems to be that to make a new wmsconnection you
always have to go through the QgsNewHttpConnection class which is a
visual dialog (while for my purpose it would be nice if I could
'silently' make my temporal connection?
Am I correct in this? Or am I missing something?
What would be the best way to implement this? Maybe create a temporary
connection (named 'temporarily connection (save if you want to save it)
), and discard it later (or let the user save it in between)?
Regards,
Richard
PS: I could off course take a shortcut and only use the uri + layername
to add a rasterlayer via the 'addrasterlayer'-api. But then I would skip
the getcapability step which makes it possible to check other layers in
the service, and see if my image-type and crs are available etc...
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