They were using a 'name' property which wasn't
being set in the data. Radios share the same name
attribute so they can get it from the parent
group.
Also includes fixes for tests where the original
API is used.
If focus moves to a textarea, we care more about
the caret being overlapped than the textarea.
This adds tests for the caret being overlapped on
load and as a result of it moving underneath the
sticky element from a keyboard event.
If an element receives focus when underneath a
stick element, the window should scroll so the
focused element is revealed.
Includes some changes to the WindowMock API to
allow access to data from Jest spies.
A 'shim' element needs to be added to the page
when an element is made sticky to ensure the
vertical position of everything doesn't change.
When an element becomes sticky it is made
`position: fixed` which removes it from the layout
of the page. The 'shim' is an element added at the
same place in the page with the same dimensions,
so the layout isn't changed.
'dialog' mode was introduced as part of this work:
https://github.com/alphagov/notifications-admin/pull/2682
It lets multiple elements sticky to the viewport
together so a set of UI can be present for a set
scrolling range. It's called a 'dialog' because
the behaviour is closest to that of a modal
dialog.
