git_ui: Add Shift-click multi-select to the Git Panel

[peakxy]

Objective

• The Git Panel currently only supports a single selected entry, so users cannot operate on several changed files at once. Range-selecting files with Shift-click and applying group actions (stage/unstage, discard, open diff, view file, view history) is a common workflow in other Git clients and was missing in Zed.
• Fixes Git Panel can support to hold down Shift key to make multiple selections. #63442
• Fixes Multi-select files in the git panel #26430

Solution

• Shift-clicking a file marks all visible entries between the anchor and the clicked entry (marked_entries), in both flat and tree view modes; a plain click collapses back to a single selection, and clicking the empty area below the list clears the selection.
• A selected_status_entries() helper resolves the marked entries when present, otherwise the single selected entry, and all entry actions now operate on that list:
  • Stage/Unstage: entries are partitioned by their current stage status and staged/unstaged in one batch.
  • Discard/Restore/Trash: one confirmation prompt (“N files”) followed by a per-entry revert.
  • Open File Diff, View File, View File History, Add to .gitignore / .git/info/exclude: operate on each marked entry.
  • Copy Path, Copy Relative Path, and Open Diff intentionally keep their single-entry behavior.
• Right-clicking an unmarked entry collapses the multi-selection to that entry; right-clicking a marked entry keeps the group and shows plural menu titles (“Stage Files”, “Trash Files”, …).
• Multi-selection marks survive list rebuilds (view mode switch, status refresh) by re-resolving the marked paths after update_visible_entries.

Testing

• Added 8 gpui::test cases in git_panel.rs covering: shift-click range selection in flat and tree view, plain-click collapse, selection surviving a flat→tree rebuild, multi View File, multi stage via ToggleStaged, multi Open File Diff, and multi View File History.
• Reviewers can test manually: open the Git Panel with several changed files, Shift-click to select a range, then try Stage/Unstage, Discard (check the plural prompt), Open File Diff, View File, and View File History; verify plain click and empty-area click reset the selection, and that switching flat/tree view keeps the marks.

The demonstration video is as follows:

CleanShot.2026-08-30.at.19.43.00.mp4

Self-Review Checklist:

• I've reviewed my own diff for quality, security, and reliability
• Unsafe blocks (if any) have justifying comments
• The content adheres to Zed's UI standards (UX/UI and icon guidelines)
• Tests cover the new/changed behavior
• Performance impact has been considered and is acceptable

Showcase

Click to view interactions

• Shift + click → selects the range from the anchor to the clicked file (highlighted rows)
• Right-click a selected file → group actions with plural titles ("Stage Files", "Trash Files", "Restore Files")
• Click empty space below the list → clears the selection

(screenshot/GIF placeholder — record before submitting if desired)

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Release Notes:

• Added Shift-click multi-select in the Git Panel, enabling batch stage/unstage, discard, open diff, view file, and view history for multiple files

[Copilot]

Pull request overview

Adds Shift-click range multi-select to the Git Panel and updates Git Panel actions to operate on the marked (multi-selected) entries when present, including opening multiple file diffs / files / histories. Also updates the File History action renderer to support multiple targets and adds GPUI tests covering the new selection + batch-action behavior.

Changes:

• Introduce marked_entries-driven multi-selection with Shift-click range selection, plain-click collapse, and empty-area click deselect.
• Update Git Panel actions (stage/unstage, revert, view file, open file diff, gitignore/exclude, file history targets) to operate on selected_status_entries().
• Add GPUI tests covering multi-select selection semantics and multi-target actions.

Reviewed changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated 3 comments.

File	Description
crates/git_ui/src/git_panel.rs	Implements multi-selection behavior, updates multiple actions to operate on marked entries, and adds GPUI tests.
crates/git_ui/src/git_graph.rs	Extends File History action handling to open history for multiple selected targets.

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