This pull request introduces the new
`ElementContext::request_autoscroll(bounds)` and
`ElementContext::take_autoscroll()` methods in GPUI. These new APIs
enable container elements such as `List` to change their scroll position
if one of their children requested an autoscroll. We plan to use this in
the revamped assistant.
As a drive-by, we also:
- Renamed `Element::before_layout` to `Element::request_layout`
- Renamed `Element::after_layout` to `Element::prepaint`
- Introduced a new `List::splice_focusable` method to splice focusable
elements into the list, which enables rendering offscreen elements that
are focused.
Release Notes:
- N/A
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Co-authored-by: Nathan <nathan@zed.dev>
This is a best-effort attempt, as the target offset from the top is just
an estimate; furthermore, this does not account for things like project
search header (which adds a bit of vertical offset by itself and is
removed once we jump into a buffer), but it still should improve the
situation quite a bit.
Fixes: #5296
Release Notes:
- Improved target selection when jumping from multibuffer; final
position in the buffer should more closely match the original position
of the cursor in the multibuffer.
This should have no user-visible impact.
For vim `.` to repeat it's important that actions are replayable.
Currently editor::MoveDown *sometimes* moves the cursor down, and
*sometimes* selects the next completion.
For replay we need to be able to separate the two.
* Scroll to the newest cursor if all cursors can't fit in the viewport.
* Refuse to layout an editor less tall than one line height.
Co-authored-by: Nathan <nathan@zed.dev>
After #2641 we noticed that scrolling didn't take a count parameter.
The PageDown/PageUp logic was also broken by an additional -1 (for both
vim mode and not).