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feat: add split panes with per-tab layout persistence - #49
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WalkthroughThe workspace now supports persistent split panes with side-by-side or stacked layouts, pane focus, pane-local input, and pane closing. Non-macOS shortcuts now use Ctrl without treating AltGr as a shortcut. CI uses a self-hosted Windows runner. ChangesSplit-pane workspace
CI runner updates
Priority: ➖ Normal Estimated code review effort: 5 (Critical) | ~75 minutes Change: Feature Sequence Diagram(s)sequenceDiagram
participant User
participant Workspace
participant TabData
participant TerminalRenderer
User->>Workspace: Split active pane
Workspace->>TabData: Update split tree and active pane
Workspace->>TerminalRenderer: Render updated tab
TerminalRenderer->>TabData: Read pane allocations
TerminalRenderer->>Workspace: Attach pane-local input handlers
User->>Workspace: Focus or close pane
Suggested reviewers: Merge Risk: 🟠 High · up to Continuous integration cannot run for this change because the workflow file is invalid, so nothing is being verified automatically. In the app itself, saved split layouts are rebuilt rather than restored, scrolling can affect the wrong pane, and clicking in the terminal now writes settings to disk on every press. These should be addressed before merging. 🚥 Pre-merge checks | ✅ 4 | ❌ 1❌ Failed checks (1 warning)
✅ Passed checks (4 passed)
Full details: Docstring CoverageExplanation Docstring coverage is 43.04% which is insufficient. The required threshold is 80.00%. Docstring coverage is scoped to functions touched by this diff. Analyzed 79 functions across 7 files. (2 skipped: 2 unsupported.) ✨ Finishing Touches 💡 1📝 Generate docstrings 💡
🧪 Generate unit tests (beta)
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Actionable comments posted: 8
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Inline comments:
In @.github/workflows/ci.yml:
- Line 17: Remove the matrix.os reference from the job-level if condition in the
workflow. Restructure the workflow so OS-specific eligibility is handled through
separate macOS and Windows jobs or a prior job that outputs the eligible matrix,
while preserving the intended platform filtering.
- Line 35: Update both workflow action references, actions/checkout and
actions/cache, to immutable commit SHAs while retaining comments identifying
them as v5; do not leave either action referenced by the mutable v5 tag.
In `@crates/workspace/src/components/terminal.rs`:
- Line 614: Update the terminal scroll event wiring and Workspace scroll handler
to accept pane_idx, resolving the target entity from
self.terminals[ws][tab].entities at that index instead of active_term_entity();
preserve existing scrolling behavior while ensuring the pane under the cursor is
scrolled.
- Line 392: Update the terminal lookup around ws.active_term to use safe access
on ws.terminals instead of computing len() - 1 and indexing directly. Ensure an
empty or mismatched ws.terminals produces empty_pane() through the existing
fallback, while preserving the current selection behavior for valid indices.
In `@crates/workspace/src/state.rs`:
- Line 173: Update normalize so it rebuilds self.root with build_balanced only
when the existing tree is invalid; preserve valid tree structure, orientations,
and ratios. Adjust close_pane to rely on remove_leaf and renumber_tree output
without invoking a full normalization rebuild.
In `@crates/workspace/src/workspace.rs`:
- Line 1326: Update focus_pane to return immediately when the requested pane is
already focused, before calling self.state.save().ok(). Preserve persistence
when focus actually changes, leaving snapshot_session and explicit actions
responsible for other state saves.
- Around line 1049-1053: Update the split-direction selection in the keystroke
handling arm to use the key value, treating both “d” and “D” as the stacked
split signal, rather than relying only on modifiers.shift; preserve the
side-by-side direction for the other shortcut case.
- Around line 1400-1408: In Workspace::close_pane, call TabData::close_pane and
return immediately if it rejects the request before shutting down or removing
tab.entities[pane_idx]. Only remove the runtime entity after the persisted pane
closes successfully, preserving the entities and panes count invariant.
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📒 Files selected for processing (9)
.github/workflows/ci.ymlCHANGELOG.mdcrates/ui/src/lib.rscrates/ui/src/text_input.rscrates/workspace/src/components/settings.rscrates/workspace/src/components/tab_bar.rscrates/workspace/src/components/terminal.rscrates/workspace/src/state.rscrates/workspace/src/workspace.rs
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…split panes with per-tab layout persistence
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Summary
D) or stacked (Shift+D) with the menu modifier, click or[/]to focus,Wcloses the pane (or the tab when only one remains). Binary split-tree model with per-tab layout persistence; pre-splitstate.jsonfiles load as single-pane tabs.Ctrl+Ccopies with a selection and sends SIGINT otherwise; AltGr combos no longer fire shortcuts or leak control codes; Settings showsCtrl+...hints off macOS.vterm-winrunner (fork PRs skip that leg, macOS hosted coverage still applies);actions/checkout/cachebumped v4 to v5.Verification
cargo fmt --checkcleancargo clippy --workspace --all-targets -- -D warningscleancargo test --workspace: 38 passed, 0 failed (4 new split-tree/state tests, 2 new shortcut-modifier/text-field tests)Notes for review
vterm-winlabel; until then that leg will stay queued.Summary by CodeRabbit
New Features
Bug Fixes