Calculation of the frozen column width was wrong in multiselect mode.
It did not take into account the last frozen column, but added
the select column twice.
The same problem was in AutoScroller (as the same methods were
copy-pasted there), for which reason the autoscrolling was not
scrolling till the end.
This patch fixes the calculation error and removes copy-pasted code,
reusing the same code in both places.
Change-Id: I164e2fc96688088b620ad8785c533c593723f83e
This patch also fixes issues with vertical scrollbar on page and
autoscrolling along with calculating drag element and marker positions
wrong.
Change-Id: I3d39c7bc6ddea630e04a9967ff8e1055c0736b79
Handle spanned header cells when dnd reordering columns in grid. (#16643)
Prevents dragging columns from outside spanned cells to inside them, on any row.
Currently prevents dragging columns inside spanned cells. Will change this later.
Change-Id: Ie832b3c404a3afbcce0374f8b5088dc8cb124fb8