Jonathan Grimes d37a445369 Refactor the container/viewer checks in the BaseViewer constructor
The previous checks prevented specifying a container/viewer that was in another
document/window.
Fixes #12385
2020-09-17 20:29:10 +00:00
..
2020-04-14 12:28:14 +02:00
2020-04-14 12:28:14 +02:00