When a child element inside a sub-composition is selected, the timeline
replaces the parent scene clip with the deepest-level siblings. Deselect
or selecting outside collapses back. Expanded clips are fully editable —
move, resize, delete, and split — addressed by their real DOM id with
timeline time rebased onto the sub-comp they live in.
Runtime:
- New window.__clipTree API: a read-only hierarchical ClipNode tree
(id/parentId/children + backing element) so Studio can derive
parent/child relationships for inline expansion.
Studio:
- useExpandedTimelineElements derives the expanded view from
selectedElementId + clipParentMap (pure useMemo, no useEffect).
Each child rebases onto its immediate sub-comp host (start +
sourceFile), so multi-level nesting targets the right file.
- NLELayout routes expanded-clip edits through the same handlers
top-level clips use, in local coordinates — edits save to the
sub-comp source and reflect via reloadPreview (no separate DOM-patch
path). This is the canonical update; there is no reactive observer.
- findMatchingTimelineElementId resolves sub-comp children with no
top-level element to `sourceFile#id`.
- Razor tool enabled by default; studio_razor_split analytics event
fired on single and split-all.
- O(n²) isElementGsapTargeted extracted to gsapTargetCache.ts with a
cached Set+WeakSet O(1) lookup.
* fix(studio): guard Zustand no-op setters and fix useConsoleErrorCapture memory leak
- Guard setIsPlaying to skip set() when value unchanged (eliminates 60
notifications/sec during reverse playback)
- Guard caption store selectGroup to bail before set() when group missing
(prevents empty Zustand notifications)
- Guard clearSelection to skip when already empty
- Fix useConsoleErrorCapture: restore original console.error, remove error
event listener, and delete __hfErrorCapture flag on cleanup
* fix(studio): delete dead files and unused exports
Remove 7 dead files (audioBeatDetection, keyframeSnapping,
timelineInspector, DopesheetStrip, StaggerControls,
TimelineLayerPanel, TimelineEditorNotice) and their test companions.
Delete unused computeFitToChildrenSize export from propertyPanelHelpers.
Fix re-export indirection: useDomEditCommits and studioMotionOps.test
now import patch builders directly from manualEditsDomPatches instead
of the re-export passthrough in manualEditsDom.
* fix(studio): eliminate effect-chain state mirroring for lint findings, hover, and GSAP fetch
Move lint findingsByElement sync from App.tsx into useLintModal where
the value is produced, removing the mirroring useEffect. Consolidate
4 hover-clearing effects in useDomSelection into 2 (one unconditional
on context change, one conditional combining caption mode, selection
match, and disconnected element checks). Fold the GSAP retry effect
into the fetch effect in useGsapTweenCache, scheduling a single retry
via setTimeout when the initial fetch returns 0 animations.
Eliminates 3 unnecessary render cycles from effect chains.
* fix(studio): memoize renderQueue, toolbar, and canvas rect to prevent re-render cascade
- Wrap renderQueue object in useMemo so StudioContext consumers don't
re-render on every App render
- Memoize timelineToolbar JSX so NLELayout memo isn't defeated
- Move canvasRect getBoundingClientRect() from render-time IIFE to a
useLayoutEffect-backed ref, eliminating layout thrashing
- Track and clear setTimeout handles in refreshPreviewDocumentVersion
to prevent stale timer accumulation on rapid calls and unmount
* refactor(studio): consolidate GSAP shared primitives — defaults, iframe access, keyframe parsing
Extract duplicated PROPERTY_DEFAULTS, IframeGsap interface, iframe
accessors (getIframeGsap, queryIframeElement), percentage keyframe
parsing, and toAbsoluteTime into a single gsapShared.ts module.
Removes ~120 lines of copy-pasted logic across 8 hook files, reducing
drift risk between the duplicate implementations.
* fix(studio): remove dead store fields, dead file, duplicate helper, and unsafe assertions
* refactor(studio): deduplicate selector helpers, rounding utils, percentage computation, and iframe access
* fix(studio): split StudioContext into Shell + Playback to prevent cascade re-renders
* refactor(studio): decompose useGsapScriptCommits into focused mutation hooks
* refactor(studio): decompose useFileManager into focused file operation hooks
Extract useFileTree (tree loading, refresh, derived assets/compositions)
and useEditorSave (debounced save with history tracking) from the 508-LOC
useFileManager. The parent hook composes both and retains file I/O,
click-to-source, upload/import, and CRUD — preserving the same public
interface so no consumers change.
* refactor(studio): decompose useDomEditCommits into focused commit hooks
Extract geometry (path offset, box size, rotation) and element lifecycle
(delete, z-index reorder) into useDomGeometryCommits and
useElementLifecycleOps. Parent keeps persistDomEditOperations as core
and composes all sub-hooks — public interface unchanged.
* refactor(studio): simplify useAppHotkeys with declarative command table
* refactor(studio): simplify useAppHotkeys with declarative command table
Replace 15 individual useRef callback refs with a single cbRef object.
Extract keydown dispatch into pure dispatchModifierKey/dispatchPlainKey
functions. Merge duplicate undo/redo logic into shared applyHistory.
Extract cross-origin listener boilerplate into safeAddListener/safeRemoveListener.
Hook body: 204 LOC (down from 445). Public API unchanged.
* fix(studio): remove unused getDomEditTargetKey import
* refactor(studio): decompose useDomEditSession into focused editing hooks
Extract GSAP-aware geometry intercepts (move/resize/rotation) and
animated property commit into useGsapAwareEditing, and selection
wiring, GSAP cache management, preview sync, and selection handlers
into useDomEditWiring. The parent remains a pure composition shell.
* style(studio): fix formatting in 5 files
* fix(studio): trim App.tsx to 598 lines (under 600 limit)
---------
Co-authored-by: Miguel Ángel <miguel07alm@protonmail.com>
* fix(studio): save retries, mutation queue circuit breaker, save_failure diagnostics
Save failures could silently drop user work: code-editor saves fired a single
PUT with no retry, DOM-edit failures drained the whole queue against a failing
server, and several failure paths only logged to the console.
- Retry code-editor saves with exponential backoff instead of dropping the
edit on the first failed PUT.
- Circuit breaker on the DOM-edit save queue: a failing server pauses the
queue with a user-visible error state instead of burning every queued
mutation against it.
- save_failure events now carry error_message, status_code, and source on
every emission path; style/attribute DOM-edit failures that previously only
logged to the console now emit telemetry too.
- Route unawaited commitMutation call sites (GSAP drag, property scrubbing,
undo/redo, text fields) through a safe wrapper that reports failures via
telemetry instead of unhandledrejection.
Follow-ups (deferred): version/ETag conflict guard on file PUTs, offline
save queue.
* fix(studio): narrow save retry changes for fallow
Miguel Ángel