editor: Extract header and mouse out of element.rs (#57472)

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cc @SomeoneToIgnore

## Summary

Follow-up to [this
comment](https://github.com/zed-industries/zed/discussions/55352#discussioncomment-16961889).
This extracts the buffer header and breadcrumb rendering helpers out of
`element.rs` into a `header.rs` and mouse related things to `mouse.rs`

Self-Review Checklist:

- [x] I've reviewed my own diff for quality, security, and reliability
- [x] Unsafe blocks (if any) have justifying comments
- [x] The content is consistent with the [UI/UX
checklist](https://github.com/zed-industries/zed/blob/main/CONTRIBUTING.md#uiux-checklist)
- [x] Tests cover the new/changed behavior
- [x] Performance impact has been considered and is acceptable

Release Notes:

- N/A

...

This commit is contained in:

Mikhail Pertsev authored and GitHub committed 2026-05-29 11:51:17 +00:00

1 parent efd671682b

commit 8e522c8be0

3 files changed

+2291 -2228

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crates/editor/src/element.rs

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crates/editor/src/element/header.rs

+1055

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crates/editor/src/element/mouse.rs

+1187

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