* Better to represent it similar to text form field with two
marking characters selecting a text range
* So the text between the two marks can be anything (not only
a well formatted date) and also have any character formatting.
* With this we handle the case when the user needs a placeholder
text in the date field or when the user needs time values (hour,
minute, sec) next to the date.
Change-Id: Id60a50a2028058f8a6a080e265c0730d88b98543
Reviewed-on: https://gerrit.libreoffice.org/75459
Tested-by: Jenkins
Reviewed-by: Tamás Zolnai <tamas.zolnai@collabora.com>