[QGIS-Developer] MetaSearch provider connections in master

[Tom Kralidis]

Hi devs:

Given https://issues.qgis.org/issues/17347 I'm working on fixing MetaSearch
provider connections in master. The core part of the code is currently at [1]. A
standalone example can be found at [2].  Result is that the WMS/WMTS provider
opens connecting to the selected WMS/WMTS (good).  When clicking 'Ok', 'Close',
or 'Add', the WMS/WMTS layer is added (expecting 'Close' to simply
close the dialog
and 'Ok' to add the layer and then close).  Finally clicking the 'X'
(top right) closes
the dialog as expected.

- are there other slots to call instead?
- should the Data Source Manager be used instead [3]?  Are there plans
for providing
Python binding to this?

Thanks

..Tom

[1] https://github.com/qgis/QGIS/blob/master/python/plugins/MetaSearch/dialogs/maindialog.py#L759-L792
[2] https://gist.github.com/tomkralidis/dccb49efa760a585be38ee0c3188b8b3
[3] http://qgis.org/api/classQgsDataSourceManagerDialog.html