This is a medium to advanced task.

Check the files

http://devel-home.kde.org/~tackat/EditPolygonDialog.ui

http://devel-home.kde.org/~tackat/EditPolylineDialog.ui

These have a Node tab added compared to Marble master.

The listview is supposed to be populated with a header that has 4 columns:

- node number (started from 0 and increasing in order)

- Longitude (in the DEC/DMS notation presented that the user had selected via settings)

- Latitude (dito)

- Elevation

The listView is supposed to be readonly.

The ListView should display the nodes that are created via the "Edit Map" panel.

If it's a good idea to share parts of the implementation for the polygon and polyline case then this should be done.