Road to CalendarView

[Tropix126]

For the last week or so, ive been working on a Calendar/Datepicker component for fluent-svelte. It's being developed in an isolated repo here. There are a few things that need to be ironed out, notably some a11y insights and page transitions, as well as some missing functionality. Thought I might track that here:

• [x] Complete reliance on the Intl.DateTimeFormat API and no additional date libraries.
• [x] Localization quirks. (controlling first day of week)
• [x] Minimum/Maximum dates.
• [x] Multiple values/selections.
• [x] Keyboard navigation.
• [x] Option to label each item as the start of a new month.
• [x] Excluding certain dates (believe WinUI calls these "blackout" dates).
• [x] Standalone CalendarViewItem component.
• [x] Remove the temporary styling and integrate it with fluent styles.
• [x] Paging stuff and animations.

Stretches - Very likely won't happen.

• Non-gregorian calendar layouts Probably not possible due to how the Dates work atm.
• Eventual Temporal support? Probably shouldn't even include this due to the spec not being supported anywhere.
• Progressive enhancement. Probably won't happen since date inputs don't map to what i'm trying to accomplish here.

[Tropix126]

So everything except for the page slide animation is done. I had a prototype of it working, although it was janky when switching between pages and the other solutions aren't especially easy. I think I might look into how svelte-calendar handles their infinite scroller, although that might come along later.

[Tropix126]

I might put a temporary animation in place for now, then track this in a separate issue.

[Tropix126]

Managed to get a page animation working. Controlling via mouse wheel won't be included in the release though.