augustandYara 461e6df060 project_symbols: Add preview to project symbols picker (#59863)
Candidate fix for #59822.

Adds a live preview pane to the project symbols picker, matching the
file finder and project search pickers. When the selection moves, the
selected symbol's file is shown in the preview with its declaration line
highlighted and vertically centered.

## Changes
- `project_symbols`: construct the picker with
`uniform_list_with_preview`; asynchronously open the buffer for the
selected symbol (cached by candidate id, cleared on each new query) and
implement `try_get_preview_data_for_match` to return the buffer plus the
symbol's anchor range.
- `picker`: add a public `refresh_preview` so a delegate can push
preview data once a buffer finishes opening asynchronously (the symbol
buffer is not available synchronously, unlike text search which already
holds open buffers).


#### Before
<img width="1725" height="712" alt="image"
src="https://github.com/user-attachments/assets/21dcd7d6-7cc4-4de8-ab7d-2f1ce143e814"
/>

##### After
<img width="1725" height="712" alt="image"
src="https://github.com/user-attachments/assets/db981db8-0a61-43bc-9838-c01b7bdbbf78"
/>

Can turn preview pane off by clicking at the bottom button!

## AI disclosure
AI was used for understanding the codebase and formatting this PR.

Release Notes:

- Added a preview pane to the project symbols picker

---------

Co-authored-by: Yara <git@yara.blue>
2026-07-03 10:48:15 +00:00
2026-04-30 11:10:14 +00:00
2026-06-05 23:12:31 +00:00
2026-07-01 14:55:30 +00:00
2026-07-03 10:10:41 +00:00
2026-05-27 18:17:59 +00:00
2026-01-22 23:57:26 +05:30
WIP
2023-12-14 09:25:14 -07:00
2026-04-29 10:27:47 +00:00
2025-02-04 09:02:59 -05:00
2025-10-27 13:27:59 -04:00
2026-06-27 15:06:29 +00:00
2025-10-17 18:58:14 +00:00
2026-03-17 16:34:35 +00:00
2026-04-29 10:27:47 +00:00

Zed

Zed CI

Welcome to Zed, a high-performance, multiplayer code editor from the creators of Atom and Tree-sitter.


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On macOS, Linux, and Windows you can download Zed directly or install Zed via your local package manager (macOS/Linux/Windows).

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License information for third party dependencies must be correctly provided for CI to pass.

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