This new library handles the simple case of an ordered vertical
(or horizontal) list of items that can be reordered.
It provides animations, handles positioning of items mid-drag
and exposes a much simpler API to react-dnd (with a slight loss
of potential function, but we don't need this flexibility here
anyway).
Apart from this, TagOrderStore had to be changed in a highly
coupled way, but arguably for the better. Instead of being
updated incrementally every time an item is dragged over
another and having a separate "commit" action, the
asyncronous action `moveTag` is used to reposition the tag in
the list and both dispatch an optimistic update and carry out
the request as before. (The MatrixActions.accountData is still
used to indicate a successful reordering of tags).
The view is updated instantly, in an animated way, and this
is handled at the layer "above" React by the DND library.
leaving it in the Modal manager.
We are using Modal manager to load other components not just BaseDialog
and its subclasses and they might require different keyboard handling.
Also depend on focus-trap-react rather than react-focus-trap for locking
keyboard focus inside the dialog. The experience is much nicer and even
the FocusTrap element it-self no longer gains the focus.
On a side note using the FocusTrap element outside the dialog (on
its parent) stops it from working properly.
- Wrapped all the modals inside a react-focus-trap component disabling
keyboard navigation outside the modal dialogs
- Disabled our custom key handling at dialog level. Cancelling on esc
key is now handled via FocusTrap component.
- Removed onEnter prop from the BaseDialog component. Dialogs that
submit data all now embed a form with onSubmit handler. And since
keyboard focus is now managed better via FocusTrap it no longer makes
sense for the other dialog types. Fixes
https://github.com/vector-im/riot-web/issues/5736
- Set aria-hidden on the matrixChat outer node when showing dialogs to
disable navigating outside the modals by using screen reader specific
features.
Use `react-sticky` to implement sticky date separators. This will pin a date separator to the top of the timeline panel when the separator scrolls out of the top of the view.
A known issue of this is that the spinner, which is in line with event tiles in the timeline, will appear to push the stuck date separator down. In reality the first date separator after the spinner is in line with event tiles and is not stuck because the spinner forces the timeline to be scrolled slightly further down than it would be otherwise. But also, date separators in the timeline (not "stuck") have a greater height.
Ideally the date separator would be suppressed whilst back paginating, but this will cause the stuck separator to flicker on and off. This is why the suppression has been removed.
