feat(mouse): bindable mouse gestures in keybindings.json (#259) - #297
feat(mouse): bindable mouse gestures in keybindings.json (#259)#297vitali87 wants to merge 14 commits into
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# Conflicts: # docs/LAYOUT.md # src/app/mod.rs
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📝 WalkthroughWalkthroughThe application adds configurable mouse gesture bindings with context-specific resolution, click-position commands, warning reporting, terminal ownership handling, tests, and documentation. ChangesMouse gesture bindings
Estimated code review effort: 4 (Complex) | ~45 minutes Merge Risk: 🟡 Moderate · up to The PR adds configurable mouse gesture dispatch, but some bindings can leave keyboard focus in the wrong pane or intercept clicks across unrelated sidebar views, while position-based commands may act incorrectly in non-text views. The change is not merge-ready until these bounded behavior risks are confirmed or corrected. Sequence Diagram(s)sequenceDiagram
actor User
participant CroftApp
participant Keymap
participant Command
User->>CroftApp: Mouse event
CroftApp->>Keymap: Resolve gesture and context
Keymap-->>CroftApp: Bound command
CroftApp->>Command: Execute with click position
Command-->>CroftApp: Status result
🚥 Pre-merge checks | ✅ 4 | ❌ 1❌ Failed checks (1 warning)
✅ Passed checks (4 passed)
Full details: Linked Issues checkExplanation Most requirements are addressed, including gesture parsing, context scoping, terminal ownership, live reload, refusal reporting, and tests. However, issue Full details: Docstring CoverageExplanation Docstring coverage is 84.21% which is sufficient. The required threshold is 80.00%. Docstring coverage is scoped to functions touched by this diff. Analyzed 19 functions across 3 files. (5 skipped: 3 unsupported, 2 too large.) ✨ Finishing Touches📝 Generate docstrings
🧪 Generate unit tests (beta)
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Review found a blocker and four majors. Both headline refusals (cmd+click, triple_click) were independently verified as correct — crossterm's SGR parser has no Super bit, and ClickTracker structurally cannot count to three — but the machinery around them did not follow local convention. - [blocker] The reload warning summary was dead code: an unconditional `self.status = "Keybindings reloaded (…)"` below it always won, so a refused row was invisible and #259's own acceptance criterion about a load-time notice went unmet. The compiler cannot flag a redundant String assignment. Now one assignment with both branches. - [major] `gesture_for` always read `editor_click`, but each pane records into its own tracker — so `double_click` was permanently false in the tree, tab strip, and terminal, and a binding there silently never matched. The tracker is now chosen by context. - [major] Every built-in pairs `is_double` with `record`/`clear` so the count resets; the dispatch did neither and returned, leaving `last` set — a third click at the same cell re-fired the binding. Now cleared on a fired double. - [major] The terminal-ownership check called `self.terminal()`, the ACTIVE pane, where every built-in indexes `terminals[terminal_hit]`. With splits, clicking an inactive pane consulted the wrong child's mouse-reporting state. Now indexes the pane that was clicked. - [major] `triple_click` fell through to `Chord::parse` and reported "not a key chord or mouse gesture", reading like a typo rather than the refusal the docs promise. It now carries its own reason. - [minor] A refused gesture is no longer inserted into the table. Binding cmd+click made `has_mouse_bindings()` true for an entry `gesture_for` masks Super off and can never look up, and let it dodge the reserved bare-click check by being a different key. Tests: the refused-row warning, that each region's tracker sees only its own clicks, and that neither refused gesture binds. The reviewer was right that the gap was app-level — all five defects live in mod.rs and none was reachable from a parse-level test.
🤖 Fallback review — Claude Opus 5Round 1 on the mouse-bindings feature. WalkthroughAdds mouse gestures to Both headline refusals are correct, verified independently rather than taken at their word:
But the machinery around them has real defects. Findings
Test coverageThe 6 keymap tests are honest and each would fail if reverted. The gap is that no app-level test drives Scores
VERDICT: REQUEST_CHANGES All addressed in |
# Conflicts: # Cargo.lock # Cargo.toml # src/release_notes.rs
Round-3 review findings on #259. A fired `ctrl+click` binding recorded into the region's ClickTracker, but the built-ins that read those trackers never consult modifiers. The next ordinary click therefore read as a double and selected a word the user never gestured for. Record only unmodified clicks; bare clicks are already reserved in editor/terminal, so the record still covers file_tree and tab_strip, which is where it was needed. Keep the Cmd-is-unreportable reason for an unknown token only when a gesture token was already seen. "cmd+double_click+bogus" is a mouse row and deserves the explanation; "cmd+j" is a real key chord and must fall through to Chord::parse, or every user Cmd binding silently stops working and the iTerm2/Ghostty forwarders lose the rows they read back. Tests: the two replacements now drive handle_mouse instead of asserting on ClickTracker directly, and both were verified to fail with their own fix reverted. Adds the end-to-end test the feature never had — bind a gesture, dispatch the event, assert the command ran — plus region routing and modified-click isolation. Extract keybindings_reload_status so the status-summary test asserts against an in-memory keymap. It previously wrote the developer's real ~/.config/croft/keybindings.json, which App::new loads unconditionally, leaking into every concurrently running test that builds an App.
Round-4 review finding on #259. The dispatch returns early, above the teardown every other left-press path in handle_mouse runs. A fired binding therefore left the hover popup, tab tooltip and chrome button hint painted over state the command had just changed, describing what was there before it ran, and left the LSP dwell timer armed at coordinates whose meaning had moved. The teardown cannot simply be hoisted above the dispatch: it reads in_editor / in_editor_scrollbar, which are computed below it. So the dispatch arm does it itself, immediately before run_command. Also restores two doc comments this branch had orphaned: the Cmd+B block belongs to is_sidebar_toggle_key, not keybindings_reload_status, and the rebindable-chord block to is_rebindable_chord, not mouse_context_for. Guard the startup keybindings warning push under cfg!(test): output:: is a process-global registry, so the developer's own refused rows would leak into every test that builds an App. Matches the matcher set beside it, which is empty under test for the same reason.
Main landed #296 (problems scope) while this branch was open, so the two new Prefs fields, their save_* helpers and their test blocks all collided. Both sides are additive; kept both. Version goes to 0.1.775 rather than 0.1.774: PR #297 is in flight at 0.1.774, and the release gate compares against merge-base, so two branches can both pass and only the second merge conflicts. Pointed save_problems_scope at prefs_for_update instead of the unwrap_or_default() it landed with. Same intent -- it predates the helper -- and it avoids writing defaults over a config that is merely malformed.
Main landed #296 while this branch was open. The tests.rs conflict was not cleanly additive: the marker fell inside an expression, so both sides ended mid-statement and shared the closing lines that followed. Kept both blocks and gave each its own close rather than deleting marker lines. Version 0.1.776 clears main (773), PR #297 (774) and PR #294 (775), all in flight. Rewrote the release note. It still described restoring the panes, which was the first implementation; the panes already came back correctly, and what this ships is their scrollback.
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Actionable comments posted: 5
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Inline comments:
In `@docs/KEYBINDINGS.md`:
- Around line 587-594: Update the keybinding entries for middle-click and
alt+wheel_up to use command IDs recognized by Command::from_id, replacing paste
and page_up so Keymap::from_json loads both rows without unknown-command
warnings.
In `@src/app/mod.rs`:
- Around line 27776-27803: Add an early self.editor.has_non_text_view() guard to
both MouseAddCursorAtClick and MouseGoToDefinitionAtClick before invoking
add_caret_at_screen or buffer_pos_at, preserving their existing behavior for
text views.
- Around line 38287-38300: Verify the documented scope of the file_tree mouse
context in KEYBINDINGS.md; if it denotes the Explorer tree, update
mouse_context_for so MouseContext::FileTree is returned only when in_tree is
true and sidebar_view is SidebarView::Explorer, leaving other sidebar panels to
their own contexts.
- Around line 30404-30432: Update the click-tracking flow used by gesture_for
and the dispatch logic around tracker.record so supported
Ctrl/Alt/Shift-modified clicks are recorded and can produce matching modified
double_click gestures. Preserve modifier matching so a modified click cannot arm
an unmodified double-click, and keep Super unsupported if that is the existing
contract.
- Around line 30384-30460: Before self.run_command(cmd) in the mouse-binding
dispatch, focus the pane corresponding to the resolved ctx via focus_pane, so
commands targeting the clicked editor, terminal, or tree update keyboard focus
before execution.
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Cargo.tomldocs/KEYBINDINGS.mddocs/LAYOUT.mdsrc/app/mod.rssrc/app/tests.rssrc/keymap.rssrc/release_notes.rssrc/widgets/command_palette.rs
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Round-5 review findings on #259. App::new loaded the real ~/.config/croft/keybindings.json unconditionally, including under cfg(test). The previous commit guarded only the WARNINGS, while the matcher set four lines below guards the LOAD — and this PR is what made the asymmetry dangerous, because a mouse row now gates an early return at the top of handle_mouse that every mouse test flows through. Verified the way the reviewer found it: substituting a three-row keymap for the load fails right_click_on_the_gutter_... and click_on_tree_row_aligned_with_terminal_splitter_y_..., both of which pass with the guard in place. The suite was green only because that file happens to be empty on this machine — environmental isolation, not structural. Also raise the Termux on-screen keyboard from the dispatch arm. Skipping it leaves a device with no other keyboard unable to type into the field the tap just focused, and it is reachable: bare clicks are reserved in editor/terminal but NOT file_tree, so a `click` bound there fires over the Search input, and any modified click in the editor gets there too. Tests for the three behaviours that had none: a tracking child keeping the pointer from a bound gesture, a tab_strip row firing only on the strip (the shared editor_click tracker is safe only because the regions do not overlap), and the three At Click commands refusing a keyboard invocation rather than guessing at the caret. The shift-bypass test is separate rather than a second half of the first: the blocked click is forwarded to the child, which starts a selection drag, and a drag in flight legitimately swallows the next press. Shift is also part of a gesture's identity, so bypassing selects `ctrl+shift+click` rather than rescuing a `ctrl+click` row — the docs said "hold shift to bypass", which invited exactly the wrong inference, and now say so.
…pane Every terminal command reaches the grid through self.terminal(), which indexes active_terminal. The built-in ctrl+click path makes the clicked pane active before resolving a link; the binding dispatch early-returns above that point, so a bound mouse_open_link_at_click read whichever pane happened to be focused. In a split that reported "No link there" over a URL the user could plainly see, making the bindable gesture strictly worse than the built-in it is meant to be able to replace. Extract the built-in's pane-switch teardown as activate_terminal_pane and call it from both sites, so the two cannot drift: a bare assignment would have fixed the lookup while leaving copy mode, quick-select and the find bar bound to the pane being left. Also spell out every MouseContext arm in the click-tracker match so a new variant cannot silently default into editor_click, and cover the wheel dispatch, whose coverage stopped at the parser.
# Conflicts: # Cargo.lock # Cargo.toml # src/app/mod.rs # src/release_notes.rs
🤖 Fallback review — Claude Opus 5 (round 6)CodeRabbit is rate-limited on this PR, so this is the recorded review artifact. VERDICT: REQUEST_CHANGES — one major, now fixed in The finding
Verified by probe, not inferred: two split panes, a URL printed only into pane 0 while pane 1 is active. Ctrl+clicking directly on that URL through a binding gave This is the same bug class the diff's own comment already identifies and fixes for The fixExtracted the built-in's pane-switch teardown as New test Also addressed
Round-5 items re-verified as genuinely fixedBoth confirmed by reverting them, not by reading:
Gates
Scores after the fix: CodeRabbit 5/5, Greptile 5/5 — the single major is resolved and the convention it violated is now shared code rather than a duplicated block. |
…ed pane Round 7 review found three defects in the mouse-binding dispatch. `ctrl+double_click` and friends could never fire. `gesture_for` decides Click vs DoubleClick by asking a tracker whether it just saw a click at this spot, and modified clicks were recorded only after a binding matched. The first click of a modified pair matches nothing by construction — it classifies as `ctrl+click`, and a user who bound only the double has nothing for it to hit — so the tracker stayed empty and the second click could never be seen as a double. Recording it unconditionally is not enough on its own: `gesture_for` reads the tracker, so classifying a second time after recording lets a single click arm itself and come back a double. The classification therefore happens once, and the recording reuses that gesture rather than deriving a fresh one. A bound gesture also made the clicked terminal ACTIVE without focusing it, which is a different thing: commands read the right grid while the user's next keystroke still went to the pane they had clicked away from. Every built-in click handler calls `focus_pane`; this one now does too. The documented jsonc example carried `paste` and `page_up`, neither a real command id, so a user copying it got a keymap that silently did less than it said. The test loads the real KEYBINDINGS.md rather than a copy, so the example cannot drift from the parser again. Also narrows the `file_tree` binding context to the Explorer view. It was true anywhere in the active sidebar, so a file_tree binding fired over Search results, the Remote list and the Testing panel, overriding row semantics it never meant to touch.
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Round 7 addressed — all five findings, pushed as 255e5e8. Taking them in order, including two that turned out to already be fixed in the working tree. Modified double-clicks may never fire (major) — real, fixed. This was the substantive one. Worth recording that the obvious fix is wrong: hoisting the recording above the lookup makes Dispatch never moves keyboard focus (major) — real, fixed. Correct diagnosis: the pane became active without being focused, so commands read the right grid while the next keystroke went to the pane the user had clicked away from. Documented example carries non-existent command ids (minor) — real, fixed.
Those last two appear to have been reviewed against an older commit — flagging it because a finding that reads as live but is already fixed costs the same verification time as a real one. Verification. All three tests pass, clippy clean at
The fourth case is worth a note: my first attempt corrupted a |
…259) Four defects in the mouse-gesture dispatch, all in how a bound modified click interacts with the built-in click handling that owns the same input. The blocker: a `ctrl+double_click` binding was unusable for the one gesture it names. The pair's FIRST click is a plain `Click` with modifiers, which matches nothing by construction, so it fell straight through to the built-in owning that modifier — every `ctrl+double_click` in the editor fired go-to-definition before the user got to the second click. `is_double_click_prefix` identifies such a click and the dispatch swallows it, moving focus as any click in a pane does but running no built-in. Deliberately narrow: it answers only for a `Click` whose double IS bound, so an ordinary ctrl+click with no double bound anywhere reaches the built-in exactly as before. A modified click that drags away still paired with the click it returned to: `ModifiedClickTracker` had no equivalent of `ClickTracker::clear_if_moved`, so it is now cancelled on drag alongside the three built-in trackers. `child_owns_pointer` was computed twice — once for recording, once for dispatch — and the two copies could disagree about whether a click over a mouse-reporting terminal was croft's to act on. Hoisted to one binding both consult. Removed an unreachable arm in the on-screen-keyboard suppression: `FileTree` context is produced only at mouse_context_for, which is gated on `sidebar_view == SidebarView::Explorer`, so the `SidebarView::Search` test could never be true. The comment above it justified the arm and was itself false after the Explorer narrowing, which is how the dead code survived review — a stale comment reads as consistent with the code beneath it. Release notes gained a Fix entry: they described only the original feature and would have shipped a changelog that did not match the binary.
# Conflicts: # Cargo.lock # Cargo.toml # src/release_notes.rs
…ild owns The swallow branch added for the `ctrl+double_click` blocker did not consult `child_owns_pointer`, while the matched dispatch 26 lines below it does. So a terminal whose child has asked for mouse tracking — a full-screen TUI — had its built-in Ctrl+click suppressed for anyone who bound `ctrl+double_click`, while binding `ctrl+click` left the built-in working. Backwards, and contrary to the rule KEYBINDINGS.md states: a TUI that asked for tracking owns the pointer, so user bindings do not fire there. The swallow is strictly a loss in that state. The modified-click recording above already declines when the child owns the pointer, so the bound double is unreachable there anyway — croft was giving up a built-in to protect a binding that could never fire. This is the same predicate this PR hoisted so recording and dispatch could not drift apart; the branch added alongside it ignored the hoist. The test asserts through an OSC 8 link with a non-web scheme, which `open_detected_url` refuses inertly. Asserting on a successful open would shell out to `open`/`xdg-open` for real on every run.
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Closes #259.
Mouse gestures bind in the same
keybindings.jsonarray as keys, using a gesture name inkeyand an optionalwhenregion. This is vscode#3130, ~1,930 votes, open since 2016 — VS Code cannot ship it because mouse handling is spread across a DOM; croft owns its entire dispatch.[ { "key": "ctrl+click", "command": "mouse_go_to_definition_at_click" }, { "key": "alt+click", "command": "mouse_add_cursor_at_click" }, { "key": "middle_click", "command": "search_from_terminal", "when": "terminal" }, { "key": "alt+wheel_up", "command": "toggle_word_wrap" } ]Two gestures the issue asks for that croft refuses
Both parse, both are reported in OUTPUT · Keybindings, and neither is silently accepted as a binding that misbehaves.
cmd+clickcan never fire. SGR mouse reporting carries no Super bit — which is exactly why croft's own Go to Definition rides Ctrl, per the comment atmod.rs:30675. The issue's headline example would have parsed cleanly and then done nothing forever.modtherefore resolves to Ctrl for mouse on every platform, unlike keys where it is Cmd on macOS.triple_clickwould fire on the second click. croft'sClickTracker(src/app/click.rs) distinguishes single from double only. Reporting a third level from the dispatcher would make atriple_clickbinding disagree with the built-in select-word behaviour about the same physical click, so the parser refuses it rather than shipping a gesture that means something other than its name.Design
Gestures are not
Chords. A chord is aKeyCodeplus modifiers; a gesture has no key code. Keeping them in separate tables also keeps gestures out ofKeymap::chords(), which drives the iTerm2/Ghostty forwarder pass — a terminal forwarder for a mouse gesture is meaningless.Dispatch sits after the region predicates and above every built-in, so a
whencontext is known and rebinding a built-in actually takes it over. An unbound gesture falls straight through.Terminal mouse ownership is respected. A TUI that asked for mouse tracking owns the pointer;
shiftbypasses, the same rule croft's built-in scroll already follows.Bare
clickis refused ineditorandterminal— it is how the caret is placed and text selected. Allowed infile_treeandtab_strip, where it is not.Position-carrying commands (
mouse_add_cursor_at_click,mouse_go_to_definition_at_click,mouse_open_link_at_click) read the click through a field set only for the duration of that dispatch. From the palette they say they need a mouse binding rather than guessing at the caret, so one command never means two things.Refused rows are visible
Previously a bad
keybindings.jsonrow vanished silently, which reads as croft being broken rather than the binding being wrong. Refused rows now report in OUTPUT · Keybindings at startup and, on live reload, summarise in the status bar — the same treatment the settings loader gives its warnings.Tests
18 keymap tests, 6 new: gesture parsing with modifiers and nonsense rejection; the cmd warning and
mod→Ctrl resolution; bare-click refusal in both reserved contexts (and its allowance infile_tree); one gesture bound differently per region; every bad-row warning path; and that mouse-only rows do not makeis_empty()lie to the key path.Suite: 3567 passing, 0 failures.
Summary by CodeRabbit
New Features
Documentation
Bug Fixes