feat(Datetime): add component

[levithomason]

Ported to our repo from #1240. This allows us to more easily manage the work and merge in contributors' PRs.

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(From original PR)

This is a work in progress mainly focused on exploring the possiblity of adding a datetime component which supports date ranges, time and localisation.

TODO

Bugs and Features

• allow typing/pasting dates into the input field
• do not show completely disabled weeks in month view
• Menu needs some work, buttons don't make sense in all states
• Expose ways to customize the menu and table as well
• Add some more props for configuring the view and doc examples
  • showWeekends
  • showDaysOfWeek
• if at all possible, remove inline styles. required styles should be configurable.
• move to 5 button CalendarMenu: << < Mo, Yr > >>. double chevrons change year, single change month, mo
• don't allow selecting invalid ranges: start > end
• use 12hr time grid with AM/PM option
• provide onChange callbacks with (e, { value }) where value is the proposed new value.
• Add dateSeparator prop to DateRange to control the separator string between the two dates

Docs

• document function prop signatures
• change Week starts Sunday example to First Day Of Week show two examples, start on Sun, another on Monday.
• fix disabled days example, do not import date utils

Cleanup

• move component to /addons
• remove cruft propTypes that do not exist
• sort propTypes alphabetically
• update Month.js to use DateTimeGrid, feat(datetime): Add component #1240 (comment)
• complete all code TODOs in /Datetime
• reverse onDateSelect args to match other callbacks, with event first.
• remove unused methods in classes

[stale]

There has been no activity in this thread for 180 days. While we care about every issue and we’d love to see this fixed, the core team’s time is limited so we have to focus our attention on the issues that are most pressing. Therefore, we will likely not be able to get to this one.

However, PRs for this issue will of course be accepted and welcome!

If there is no more activity in the next 180 days, this issue will be closed automatically for housekeeping. To prevent this, simply leave a reply here. Thanks!

[stale]

There has been no activity in this thread for 180 days. While we care about every issue and we’d love to see this fixed, the core team’s time is limited so we have to focus our attention on the issues that are most pressing. Therefore, we will likely not be able to get to this one.

However, PRs for this issue will of course be accepted and welcome!

If there is no more activity in the next 180 days, this issue will be closed automatically for housekeeping. To prevent this, simply leave a reply here. Thanks!

[layershifter]

Closing for housekeeping, I don't believe that this work will be ever done.

I recommend to use https://github.com/arfedulov/semantic-ui-calendar-react right now.