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# Objective
- The column filter popover was a static `ContextMenu`: no search, and
it didn't scale to columns with many unique values.
## Solution
- Replaced it with a `Picker<ColumnFilterDelegate>` with fuzzy search
and match highlighting over the column's unique values.
- Row order is frozen at open time (available first, then values hidden
by other filters under a "Hidden by other filters" header) so toggling a
value doesn't reshuffle the list.
- Added a footer with `{selected} / {total} rows selected` and "Clear
all".
- Added `fuzzy` and `picker` deps to `csv_preview`.
## Testing
- Search narrows to fuzzy matches with highlighting.
- Toggling a value updates its checkmark and footer count without
closing or reordering the list.
- Values excluded by another column's filter show disabled under "Hidden
by other filters".
- "Clear all" clears the column's filters and keeps the popover open.
## Self-Review Checklist:
- [x] I've reviewed my own diff for quality, security, and reliability
- [ ] Unsafe blocks (if any) have justifying comments
- [x] The content adheres to Zed's UI standards
([UX/UI](https://github.com/zed-industries/zed/blob/main/CONTRIBUTING.md#uiux-checklist)
and
[icon](https://github.com/zed-industries/zed/blob/main/crates/icons/README.md)
guidelines)
- [ ] Tests cover the new/changed behavior
- [x] Performance impact has been considered and is acceptable
## Showcase
| Before | After |
| --- | --- |
| <img width="660" height="351" alt="image"
src="https://github.com/user-attachments/assets/c78084a2-d327-4d48-9c05-f35383455713"
/> | <img width="660" height="354" alt="image"
src="https://github.com/user-attachments/assets/910d52ef-4530-4ac7-91ac-3db318cf6c19"
/> |
**+ search**
<img width="972" height="574" alt="image"
src="https://github.com/user-attachments/assets/1a26d0fc-c96c-4973-818d-7d053e8cce73"
/>
---
Release Notes:
- N/A
|
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|---|---|---|
| .. | ||
| src | ||
| Cargo.toml | ||
| LICENSE-GPL | ||