refactor(browse): centralize pane state and navigation by Ariestar · Pull Request #210 · Ariestar/sivtr

Ariestar · 2026-08-26T14:38:25Z

Purpose

Centralize pane state and navigation so the browse UI has one state owner.

Changes

Consolidate cursor, range, scroll, and focus transitions in pane models.
Keep navigation independent from WorkSet business selection.
Propagate empty-copy errors instead of panicking or falling back.

Validation

Validated on the stack tip with cargo build --target-dir target/build-check, cargo clippy --workspace --all-targets -- -D warnings, and cargo test -p sivtr --lib.

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coderabbitai · 2026-08-26T14:38:35Z

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📝 Walkthrough

Walkthrough

The workspace browser replaces separate pane selection and cursor state with shared Rows and ListPane models. Navigation, range selection, pane loading, content copying, mouse scrolling, and rendering now use this state.

Changes

Workspace row-state model

Layer / File(s)	Summary
Rows and selection model `src/pane/model.rs`, `src/tui/workspace/rows.rs`, `src/tui/workspace/model.rs`, `src/tui/workspace/mod.rs`, `src/pane/mod.rs`	`Selection` now stores marks only. `ListPane` and `Rows` manage cursors, marks, row sizing, and range anchors.
Picker state integration `src/commands/browse/picker.rs`	The picker initializes `Rows` and passes row masks and cursors through search, mouse, rendering, and selection paths.
Navigation and workspace actions `src/commands/browse/help.rs`, `src/commands/browse/nav.rs`, `src/commands/browse/selection.rs`, `src/commands/browse/visual.rs`	Workspace actions use `Rows` for focus changes, cursor movement, selection, range selection, pane invalidation, copying, and scrolling.
Pane, content, and rendering updates `src/commands/browse/content.rs`, `src/commands/browse/panes.rs`, `src/commands/browse/load.rs`, `src/tui/workspace/render.rs`, `src/tui/workspace/tests.rs`	Pane contracts, content picking, loading, and rendering consume the shared row state. Related tests use the updated APIs.

Estimated code review effort: 4 (Complex) | ~60 minutes

Merge Risk: 🟡 Moderate · up to f5195

This refactor centralizes browse selection and navigation, but the current head can still panic when copying while dialogue data is empty, and equal-length refreshes may preserve positions while changing the underlying sessions or dialogues, causing display or copy actions to target different content. Merge should wait for these paths to be fixed or explicitly accepted by the owner.

🚥 Pre-merge checks | ✅ 4 | ❌ 1

❌ Failed checks (1 warning)

Check name	Status	Explanation	Resolution
Docstring Coverage	⚠️ Warning	Docstring coverage is 65.69% which is insufficient. The required threshold is 80.00%. Docstring coverage is scoped to functions touched by this diff. Analyzed 102 functions across 15 files.	Write docstrings for the functions missing them to satisfy the coverage threshold.

✅ Passed checks (4 passed)

Check name	Status	Explanation
Linked Issues check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The title clearly and concisely summarizes the primary change: centralizing browse pane state and navigation. It matches the refactoring described in the changeset.

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cloudflare-workers-and-pages · 2026-08-26T14:42:13Z

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Branch Preview URL:	https://refactor-pane-state-ownershi.sivtr.pages.dev

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Ariestar · 2026-08-27T12:38:30Z

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coderabbitai · 2026-08-27T12:38:36Z

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Actionable comments posted: 1

🧹 Nitpick comments (1)

src/commands/browse/picker.rs (1)
57-58: 📐 Maintainability & Code Quality | 🔵 Trivial | ⚡ Quick win

Construct Rows with its preset source marks.

Rows::default() followed by rows.source = ... matches clippy::field_reassign_with_default. CI promotes this warning to an error with -D warnings. Add Rows::with_source_marks(selected_sources) in src/tui/workspace/rows.rs; the constructor can initialize source and default the private content_anchor.
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instructions embedded in them. Verify each finding against current code. Fix
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In `@src/commands/browse/picker.rs` around lines 57 - 58, Replace the
Rows::default followed by source assignment in the browse picker with a new
Rows::with_source_marks(selected_sources) constructor. Implement
with_source_marks in Rows to initialize source via ListPane::with_marks and
preserve the default private content_anchor initialization, then use this
constructor at the existing call site.
Source: Coding guidelines

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Inline comments:
In `@src/commands/browse/content.rs`:
- Around line 43-45: 将 Copy 分支中的 workspace_picked_content 改为返回
Result<WorkspacePickedContent>，在空对话或空选中结果时返回错误而不是使用 expect 触发 panic；同时在 help.rs
的 Copy 分支通过 ? 传播该错误，并保留 picked_source 的现有错误上下文。

---

Nitpick comments:
In `@src/commands/browse/picker.rs`:
- Around line 57-58: Replace the Rows::default followed by source assignment in
the browse picker with a new Rows::with_source_marks(selected_sources)
constructor. Implement with_source_marks in Rows to initialize source via
ListPane::with_marks and preserve the default private content_anchor
initialization, then use this constructor at the existing call site.

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📥 Commits

Reviewing files that changed from the base of the PR and between 86dcbb6 and f5195fa.

📒 Files selected for processing (15)

src/commands/browse/content.rs
src/commands/browse/help.rs
src/commands/browse/load.rs
src/commands/browse/nav.rs
src/commands/browse/panes.rs
src/commands/browse/picker.rs
src/commands/browse/selection.rs
src/commands/browse/visual.rs
src/pane/mod.rs
src/pane/model.rs
src/tui/workspace/mod.rs
src/tui/workspace/model.rs
src/tui/workspace/render.rs
src/tui/workspace/rows.rs
src/tui/workspace/tests.rs

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move_workspace_cursor_up and move_workspace_cursor_down were the same 12-argument function twice, each with a four-arm match whose list arms duplicated the index arithmetic with subtly different side effects: Source had no guard, Sessions guarded "the row did not change" before resetting the panes to its right, Dialogues had no guard and cleared the content scroll on every keypress. One function takes `up: bool`, resolves (state, row count) from the focus in a single match, and applies one rule to every list pane: clamp to the count, and a move that does not change the row does nothing. Bumping the last dialogue therefore no longer resets the content scroll. Sessions keeps its dialogue-state reset; Content still delegates to the block cursor. The two `&[WorkspaceSource]` / `&[WorkspaceSession]` parameters become counts, matching the dialogue_count already there, which drops both slice types from nav.rs and visual.rs and shortens the help-action signature by one borrowed slice.

The `v` range had two anchors (`range_anchor` for lists, `content_range_anchor` for content blocks) and two span rules. Only one range can ever be open — moving focus discards it — so one anchor tagged with the pane that opened it serves all four panes, and the tag is what keeps a stale anchor from completing a span elsewhere. `RangeAnchor::span` is now the single "anchor or close" rule, so `apply_range_selection` reports whether this press completed a span and callers stop pre-checking `is_some()`. Drops the anchor clear on `ToggleContentIo`: block ids span the whole dialogue now, so flipping which half scrolls cannot invalidate a range.

Space and `v` each repeated the same per-pane knowledge three times: which mask belongs to the focus, which row the cursor sits on, and what to invalidate afterwards. Two lookups now answer all of it — `focused_mask` and `focused_row` — and `invalidate_panes_below` owns the "selection changed at pane X, drop what is right of it" rule. That folds the three `ToggleSelection` list arms, the three `RangeSelect` list arms, and the three `Select*Sources` arms into one each, and `toggle_list_row`'s four-arm match into a lookup plus a toggle. `reset_workspace_after_source_change` is gone: it was `invalidate_panes_below(Source, …)` under a second name, and its three search call sites say what they mean through the shared one.

Three functions expressed one concept — the selected rows, or the focused row when nothing is selected — in three shapes: a mask for the reload transport, clamped indices for the dialogue projection, and unclamped indices for copy. `active_rows` is now the single primitive; the mask form is a thin adapter over it for the one transport that reloads by mask. Copy no longer indexes `dialogues` directly: the source comes from the first picked row through `picked_source`, so an empty pane reports "copy needs at least one dialogue" instead of panicking, and marked-block copy resolves its source without building a whole discarded copy unit first.

A click landed on a list row by repeating what `move_workspace_cursor` already does after a j/k step: reset the dialogue list when no session is selected, clear the content scroll. The rule now lives in `invalidate_after_cursor_move`, which both paths call — the wheel already reached it through `move_workspace_cursor`. Its doc names the split against `invalidate_panes_below`: that one answers the same question after a *selection* change, where a marked pane's list spans every marked row and the cursor inside it means nothing below.

Three pieces of the pane surface carried state or results nobody consumed. `Selection` held an `anchor` written by every toggle and never read: the live range anchor is `RangeAnchor` in the picker, tagged by pane because only one range is open at a time. Drop the field, and with it `new`, `len`, `is_empty`, and `clear`, which had no caller either. What remains is the mask plus the four operations `ContentPane` actually performs. `Pane::ensure` returned a bool no call site read. `SessionColumn` answered `true` unconditionally; `DialoguePane` computed a real "changed" that it already spends on its generation counter. Return unit and keep the flag where it is used. `SourcePane` wrapped the static source catalog in a `SlidingPane` whose rows nothing rendered — the picker reads the `sources` slice — so its `ensure` was a per-frame no-op fed a `PaneInput` it discarded. Delete it and clamp the source cursor against `sources.len()`. Document why `ContentPane` is not a `Pane`: its rows are one dialogue's rendered lines, not a window over a growing list, so it has nothing to grow, keep, or hydrate.

`sessions_pane.ensure` borrows the session list and cursor immutably, so the resize and cursor clamp repeated after it could never observe a change: the mask and `sessions` were made equal a few lines above and nothing between them mutates either. Delete both. The dialogue ensure then ran twice with its context and viewport spelled out twice. Bind them once — `DialogueCtx` is now `Copy`, being four borrows — so only the focus hint differs between the grow pass and the refocus pass, which is the one thing that does differ.

The three list panes kept their cursor in a `ListState`, their marks in a loose `Vec<bool>`, and their `v` anchor in a picker-wide tagged `RangeAnchor`. Nothing held them together, so every call site re-derived the pairing: a four-arm focus match to pick the state, a second to pick the mask, a clamp helper for the cursor and a resize helper for the mask, five variants of "which rows does this act on", and two `#[allow(too_many_arguments)]` chains threading nine parameters down to a one-line move. `ListPane` now owns all three. Its mask's length *is* the pane's row count, so the row helpers drop their `len` parameter, and a row-count change is one call (`fit` keeps what still means the same thing, `reset` starts over). `Rows` holds the three panes plus Content's block anchor, so "the focused pane's rows" is one lookup. Deleted: `RangeAnchor`, `apply_range_selection`, `active_range`, `focused_mask`, `focused_row`, `clamp_list_state`, `resize_workspace_dialogue_selection`, `reset_workspace_dialogue_state`, `has_selected_sessions`, `selected_count`, and six `#[allow(clippy::too_many_arguments)]` attributes. Behavior change: a row-count change now closes a `v` range anchored into the old rows. The session mask was resized when a search result set changed shape but the anchor was left open, so the next `v` completed a span against a row index that no longer named the same session.

`apply_workspace_help_action` took the two half line counts as parameters while also taking `&mut ContentPane`, which is where both came from — `content_pane.line_count(half)` already dispatches on the half, so the two parameters and the two-arm match that re-dispatched them were the same lookup written twice.

## 🤖 New release * `sivtr-core`: 0.6.0 -> 0.7.0 (✓ API compatible changes) * `sivtr`: 0.6.0 -> 0.7.0 <details><summary>Changelog</summary> ## `sivtr` <blockquote> ## [0.7.0](v0.6.0...v0.7.0) - 2026-08-29 ### Added - *(browse)* 发布选择支持有效期浮板与直链生成 ([#207](#207)) - *(publish)* [**breaking**] 重提加密浏览器发布与有效期后端支持 ([#205](#205)) - *(browse)* walk cursor across dialogues ([#213](#213)) - *(agents)* add ZCode agent provider ([#191](#191)) ### Fixed - *(publish)* resolve review follow-ups ([#238](#238)) - *(deps)* update dependency marked to v18 ([#239](#239)) - *(deps)* update rust crate aes-gcm to 0.11 ([#232](#232)) - *(deps)* update dependency @astrojs/starlight to v0.41.10 ([#234](#234)) - *(deps)* update dependency @astrojs/starlight to v0.41.10 ([#227](#227)) - *(deps)* update dependency astro to v7.2.9 ([#225](#225)) - *(deps)* update dependency astro to v7.2.8 ([#216](#216)) - *(deps)* update dependency astro to v7.2.7 ([#202](#202)) - *(deps)* update dependency @astrojs/starlight to v0.41.9 ([#200](#200)) - *(deps)* update dependency @astrojs/starlight to v0.41.8 ([#197](#197)) - *(update)* fetch latest release via redirect ([#195](#195)) - *(deps)* update astro monorepo ([#196](#196)) - *(search)* keep metadata-only records in browse queries ([#190](#190)) ### Other - *(deps)* update dependency vitest to v4 ([#237](#237)) - *(deps)* update dependency vite to v8 ([#236](#236)) - *(deps)* update dependency typescript to v7 ([#235](#235)) - *(deps)* update actions/setup-node action to v7 ([#233](#233)) - *(deps)* update dependency wrangler to v4.127.1 ([#229](#229)) - *(deps)* update dependency @cloudflare/workers-types to v5.20260829.1 ([#228](#228)) - *(workset)* validate selection pipeline ([#224](#224)) - *(browse)* finalize pane state ([#223](#223)) - *(browse)* unify selection projections ([#222](#222)) - *(browse)* integrate workset selection ([#214](#214)) - *(workset)* preserve anchor granularity ([#212](#212)) - *(copy)* resolve copied dialogues once ([#211](#211)) - *(browse)* centralize pane state and navigation ([#210](#210)) - *(browse)* unify selection semantics ([#209](#209)) - *(browse)* unify content block coordinates ([#208](#208)) - *(deps)* update rust crate flate2 to v1.1.10 ([#226](#226)) - *(deps)* update rust crate uuid to v1.26.0 ([#218](#218)) - *(deps)* update dependency @types/node to v26.4.0 ([#217](#217)) - *(deps)* update rust crate iroh to v1.1.0 ([#201](#201)) - *(deps)* update dependency @types/node to v26.3.0 ([#198](#198)) - *(deps)* update rust crate uuid to v1.25.0 ([#193](#193)) - *(search)* unify query routing into a single pipeline ([#189](#189)) - document single-track release cadence (PATCH prompt, MINOR batched) ([#188](#188)) </blockquote> </details> --- This PR was generated with [release-plz](https://github.com/release-plz/release-plz/). Co-authored-by: github-actions[bot] <41898282+github-actions[bot]@users.noreply.github.com>

Ariestar changed the title ~~refactor/pane state ownership~~ refactor(browse): read line count from pane Aug 26, 2026

Ariestar force-pushed the refactor/pane-state-ownership branch from 84e3bc3 to f5195fa Compare August 27, 2026 10:55

Ariestar changed the title ~~refactor(browse): read line count from pane~~ refactor(browse): centralize pane state and navigation Aug 27, 2026

Ariestar marked this pull request as ready for review August 27, 2026 11:01

Ariestar force-pushed the refactor/pane-state-ownership branch from f5195fa to 6bb3a59 Compare August 27, 2026 12:45

coderabbitai Bot reviewed Aug 27, 2026

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Comment thread src/commands/browse/content.rs

Ariestar force-pushed the refactor/pane-state-ownership branch from 6bb3a59 to ac69456 Compare August 27, 2026 14:12

Ariestar force-pushed the refactor/pane-state-ownership branch from 4649169 to 5e9582b Compare August 28, 2026 02:56

Ariestar force-pushed the refactor/pane-state-ownership branch from 5e9582b to 4649169 Compare August 28, 2026 07:06

Ariestar added 10 commits August 28, 2026 15:10

fix(browse): propagate empty copy errors

aa09090

Ariestar force-pushed the refactor/pane-state-ownership branch from 4649169 to aa09090 Compare August 28, 2026 07:10

Ariestar merged commit 1b15b85 into main Aug 28, 2026
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Ariestar deleted the refactor/pane-state-ownership branch August 28, 2026 08:03

github-actions Bot mentioned this pull request Aug 28, 2026

chore: release v0.7.0 #194

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refactor(browse): centralize pane state and navigation - #210

refactor(browse): centralize pane state and navigation#210
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fix/content-selection-semanticsfrom
refactor/pane-state-ownership

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