Fixes https://github.com/vector-im/riot-web/issues/8714
Fixes https://github.com/vector-im/riot-web/issues/8890
Fixes https://github.com/vector-im/riot-web/issues/9034
Fixes https://github.com/vector-im/riot-web/issues/8954
This turned out to be much more complicated than it needed to be. We use an IndicatorScrollbar to do all the math for us and some minor changes have been made so it can flag left/right overflow. The complicated part is the css changes which make the gradients work: unlike the RoomSubList, we have to calculate the offset of the indicators (gradients) on our own because position:sticky doesn't work horizontally.
The changes to the css (well, mostly pointer-events:none) make it so the gradient doesn't interfere with the room avatars.
9034 and 8954 are fixed by this because they represent an overflow-x:none style breakage where browsers won't let you scroll without a scrollbar. The gradient offset problem is also demonstrated in 8954.
* renames RoomTooltip to be a generic Tooltip (which it is)
* hooks it into Field to show validation results
* adds onValidate to Field to let Field instances call an arbitrary validation function
Rebased from @ara4n's https://github.com/matrix-org/matrix-react-sdk/pull/2550
by @jryans. Subsequent commits revise and adapt this work.
If the dark theme is activated, the country dropdown defaults to those colors
where it doesn't fit in with the always-light auth flow. This restyles its
colors to be light.
This allows Fields to have an optional prefix component which is placed inside
the border of the Field and to the left of the input. Since this label animation
would be complex to get right for this case, it is instead fixed to the top left
if there is a prefix component.
This canonical example of this today would be a phone number field which
includes a country dropdown.
By placing the Field's border on the Field component root instead of the input,
it's easier to wrap it around additional elements that we'll soon stuff inside
the field.
This converts most fields in the registration form to use the Field component,
except for the phone number, which is a left as a separate task because of the
country dropdown menu.
This adds a comment to explain the `max-width` and also fixes it actually use
the right value. (I had grabbed the wrong part of `margin` the first time.)
This avoids awkward wrapping if the label is longer than the input. This will
show an ellipsis to suggest there's more text in the label than can be shown.
When the `label` element is displayed on top of the input (`label` is set and
there is no `placeholder`), it would block clicks from reaching the input. This
allows them to get through, but then also restores `label`'s events once it
moves out of the way.
Fixes https://github.com/vector-im/riot-web/issues/8469
