7855 cb add setting use the users os formatting for numbersdates

[SychevAndrey]

[Wroud]

const isDateOnly = /^\d{4}-\d{2}-\d{2}$/.test(displayValue);
Is it really required? This will hit performance in the grid noticeably, at least create a regex outside of the render function.
new Date() should be able to parse a date correctly without time. Maybe you can simplify the check by checking the resulting Date object (probably it will have some constant time)

(or just use unified formatter)

[Wroud]

Also, it's probably enough to check this format only once for one of the cells because they all will have the same format, or maybe you can check it by column type

[SychevAndrey]

Yes, we can put it on the data context level and set something like "extended datakind" for every column with TIME/DATE/DATETIME values. In the cell we will just get the datakind of the column and use the according formatter. Do you want me refactor like that?

Unfortunately, we can't rely on new Date to check the shape, so testing by regex or splitting is required. However, if we do it only on the TableDataContext level it should be not a problem.

[Wroud]

probably you want to use ResultSetCacheAction

[SychevAndrey]

looks like an over-engineering to me since we don't need cell or row-level caching here, only the cache by columns

[Wroud]

we need to add getColumn like we have getRow in it, it's better because it will clear cache when needed and place it in one place

[sergeyteleshev]

can we add default formatter here? which is gonna just display something as it is without formatting

cause now this line can break the code:
value = dateFormatter!.format(date);

better to have default switch case to prevent that

[Wroud]

we need to add getColumn like we have getRow in it, it's better because it will clear cache when needed and place it in one place