Since the popup is fairly small I opted for a straight addition parallel
to the find/replace. To make code more clear the functions that create
each popup were coalesced and made their interface simpler. That forced
a reorganization of the data processing which translates to a larger
number of changes than usual. Most of those changes are just moving some
action from one function to another.
The old method to identify popups using the size and position of the
window was dropped in favor of one based on child windows and using
their names for a much easier and robust identification.
Added specialized functions to text editor to jump to a line or to given
coordinates with a simple interface that simplifies older code that
performed the same task.
Because this PR modifies heavily the same code as the previous PR (1983)
it is also included here to make merging easier.
---------
Co-authored-by: Nik <werwolv98@gmail.com>
8d123da847