feat(studio): revamps Studio + improves code quality (#2291)

* feat(studio): glue API coexistence layer for the NLE swap

What: extends 21 glue files so the OLD timeline/canvas engine and the NEW
NLE components type-check side by side: playerStore (multi-select setters,
zoom pin, snap toggle, non-reactive scale scratch), drag-state types gain
optional NLE fields, timelineLayout/timelineAssetDrop/timelineEditingHelpers/
timelineEditing/timelineElementHelpers/studioHelpers/assetHelpers gain the
NLE exports, DomEditOverlay + gestures + AssetContextMenu + Timeline props
gain optional callbacks/params, contexts gain *Optional hooks, and
TimelineEditCallbacks.onMoveElements becomes a bivariant method accepting
both engines' change shapes. patchDocumentRootDuration's test rides along.

Why: this is the keystone that dissolves the old "welded glue" problem —
every symbol the NLE components need is ADDED next to what the old engine
still uses, so the engine components and the swaps can land as separate
reviewable PRs.

How: 15 authored intermediate files (main content + additive symbols; no
behavior changes — new fields optional, new callbacks unused until wired)
plus 6 files whose final content is already purely additive. New exports
without consumers yet carry TEMP(studio-dnd) ignoreExports entries, removed
by the app-shell swap.

Test plan: tsc --noEmit in studio + studio-server (verifies BOTH engines
compile); bunx vitest run (full suite green incl. the 6 new
patchDocumentRootDuration tests); fallow audit clean.

* feat(studio): timeline interaction hooks and lanes component (unwired)

What: the timeline-side wiring layer, unwired: TimelineLanes (the lane
renderer driving drag/resize/marquee), timelineMarquee (+tests),
useTimelineStackingSync, useTimelineGeometry, useTimelineEditPinning,
useTimelineEditingDrops.

Why: everything between the pure drag math and <Timeline> itself; the
timeline-glue swap PR then only rewires Timeline/TimelineCanvas onto these.

How: new files, tsc-clean against the coexistence layer. Unwired components
carry TEMP(studio-dnd) entry registrations, removed at the app-shell swap.

Test plan: bunx vitest run timelineMarquee.test.ts; tsc --noEmit; fallow
audit clean.

* feat(studio): NLE shell assembly (unwired)

What: EditorShell (the full editor layout replacing NLELayout +
StudioPreviewArea), TimelinePane (timeline host with sub-comp rebasing) and
useTimelineEditCallbacks (the callback bag bridging store edits to the
timeline), all unwired.

Why: the shell that App swaps to in the final step; reviewing it standalone
keeps that swap PR small.

How: new files against the coexistence layer; TEMP(studio-dnd) entries
until App mounts EditorShell in the app-shell swap.

Test plan: tsc --noEmit; bunx vitest run (suite unchanged); fallow audit
clean.

* feat(studio): timeline glue swap — Timeline/TimelineCanvas onto the NLE engine

What: flips the timeline glue to its final form (23 files): Timeline and
TimelineCanvas rebuilt on TimelineLanes/TimelineOverlays, useTimelineClipDrag
drives preview/commit through the new drag engine, range selection goes
multi-select, playback loop moves to useTimelinePlayerLoop. Deletes the 9
old-engine files this orphans (group drag, marquee selection, snap targets,
layer gutter, selection overlays + their suites) — each is compile- or
gate-forced by this swap, verified by probe.

Why: second swap step; timeline-only, canvas and App untouched.

How: modified files to final content + forced deletions.
playerStore/timelineEditing/timelineCallbacks stay at their coexistence
form until the app swap (the old App still runs on them).

Test plan: tsc --noEmit; bunx vitest run (full suite); fallow audit clean.

* feat(studio): clip thumbnail modules

What: ImageThumbnail (+tests) and thumbnailUtils (+tests) — frame decode
with SVG/AVIF format fallbacks and rounded-corner clipping — plus
VideoThumbnail updates.

Why: the decode layer for timeline clip thumbnails, ahead of the visual
refresh that renders them.

How: new modules + one modified file; purely presentational.

Test plan: bunx vitest run on both test files; tsc --noEmit; fallow audit
clean.

* feat(studio): assets/blocks panel behaviors + preview helpers

What: blocks tab install flow, right-panel and global drag-overlay polish,
music beat analysis and clip-content rendering hooks, and the
preview-helper utilities backing asset preview.

Why: completes the studio NLE stack on top of the visual refresh.

How: modified files only (kept as one PR: splitting further would produce
sub-150-LOC fragments of interdependent panel glue).

Test plan: bunx vitest run studioPreviewHelpers/studioUrlState suites; tsc
--noEmit; fallow audit clean.

* fix(studio): restore timeline playback loop

* fix(studio): restore missing GSAP helpers module

* refactor(studio): split timeline GSAP helpers

* style(studio): keep timeline helper under size limit

* fix(studio): restore timeline overlays module

* fix(studio): remove stale GSAP import

* fix(studio): restore canonical timeline dependencies

* style(studio): format restored timeline helpers

* style(studio): satisfy helper line limit

* fix(studio): repair rebuilt timeline integration

* feat(studio): complete rebuilt NLE cutover

* fix(studio): guard project and timeline race boundaries

* fix(studio): preserve graded resize and crop geometry

* fix(studio): log resize/rotate commit failures, move anchor accumulator to resize-local

* fix(studio): treat duration-0 tweens as static holds and settle resize position before persist

Instant holds (to()/fromTo() with duration 0) were classified as animated
tweens by every commit route, so resizing or rotating them converted the
hold into a corrupt duration-0 keyframes tween (new value at 0%, old at
100%) that GSAP drops; panel edits appended a losing set. A shared
isInstantHold() now routes them through the static replace-in-place path,
and percentage math guards zero-duration windows.

Separately, anchored-corner resizes painted 3-5 frames at the new size but
old position while the offset persist round-tripped the server. The commit
path now applies the corrected GSAP position synchronously before awaiting
the offset persist, mirroring the scale route's settle.

* feat(studio): gesture-transaction seam with commit observability

Introduce runGestureTransaction — one owner for a gesture commit's
settle -> persist -> record lifecycle. It settles the live DOM
synchronously before any async persist, folds every mutation into one
undo entry via a per-transaction coalesceKey, restores pre-gesture state
exactly once on failure, and asserts (dev console) + reports (PostHog:
commit_transaction / commit_invariant_violation / commit_transaction_failed)
that a persist never changes pixels. The box-size resize path is migrated
onto it; the ad hoc per-route coalesceKey/reload handling is removed.

Extract the resize draft-rect math into resizeDraft.ts to keep the
gesture-handler file under the size cap.

Also: keep url_hash telemetry to the route slug only (drop the query
string, which carried the user's selected element id/selector), and gate
the [hf-resize] diagnostics behind localStorage hf-resize-debug so they
ship as opt-in tracing rather than console noise.

* fix(studio): transaction owns the undo label

The coalesced history entry took the last sub-mutation's label, so a
resize surfaced as "Move layer" (the offset persist) in undo/redo. The
seam now stamps tx.label on every wrapped mutation, so the folded entry
reads as the gesture.

* fix(studio): atomic static size/position commits (no data loss)

Static resize/position holds updated an existing set via delete+add — two
undo entries, and a delete that succeeded before a failed add lost the
hold on disk. Use one in-place update-properties mutation when a set
exists (one undo entry, no partial-failure window). The keyframed-hold
heal that can't be expressed as a property update now adds before it
deletes, so any single failure leaves a recoverable duplicate, never a
lost hold. Transaction-owned commits are tracked via a WeakSet so the
heal path never double-wraps an already-wrapped gesture.

* fix(core): restore timed-clip visibility after a forced timeline rebind

__hfForceTimelineRebind force-rendered the re-registered timeline but never
re-ran the per-[data-start] visibility pass, so after undo or soft reload
every clip rendered regardless of its time window until a full page reload.
Extract the visibility loop into syncTimedElementVisibility and call it from
both syncMediaForCurrentState (unchanged) and the rebind.

* fix(studio): atomic z-order/keyframe/split commits, one undo entry each

Three edit-commit paths hardened onto the one-transaction invariant:

- Z-order reorder (useElementLifecycleOps): N per-element writes now fold
  into one undo entry (coalesceMs Infinity) and, on a failed persist,
  restore already-written files to disk so no partial reorder survives.
- Enable-keyframes (useEnableKeyframes/useGsapKeyframeOps): the intermediate
  convert phase no longer full-reloads the preview (skipReload), killing the
  black-flash remount; convert + edit share one coalesce key = one undo entry.
- Razor split-all (useRazorSplit): snapshot before the batch and restore on
  any failure, so a mid-batch error never leaves un-revertable partial splits.

Shared file-history helpers (RecordEditInput, DomEditCommitBaseParams,
readProjectFileContent, restoreFilesToOriginal) dedupe the rollback/commit
logic across these paths. Commit options thread as one partial object rather
than field-by-field. Test setup extracted into colocated helpers.

* fix(studio): fold multi-step edits into one undo entry; guard text revert

- Gesture recording (useGestureCommit): the per-property-group commits now
  share one coalesce key and only the last reloads, so a recording is one
  undo entry and one preview reload instead of up to four.
- Delete selected keyframes (deleteSelectedKeyframes, split out of
  timelineEditingHelpers): N removals fold into one coalesced undo entry
  with a single reload.
- Text-field commit (useDomEditTextCommits): commitDomTextFields now uses
  the same version-guarded revert as handleDomTextCommit, so a stale failed
  commit can no longer stomp a newer successful one.

* feat(studio): batch a gesture's mutations into one atomic server write

A transaction that emits N mutations previously did N sequential POSTs,
each rewriting the file and soft-reloading — the root of the multi-phase
persist window. Add a gsap-mutations-batch endpoint that validates every
mutation up front, applies them in one in-memory rewrite chain, and writes
the file once (all-or-nothing: an invalid entry rejects the whole batch,
no partial write). The seam buffers a transaction's commits and, when more
than one targets the same file, dispatches a single batch — one write, one
history entry, one reload. The batch capability rides on the existing
commit-function reference; no option fields are threaded through callers.

* fix(studio): soften off-canvas indicator outline to 30% opacity

The dashed off-canvas selection outline at 60% was noisy with many
protruding elements on screen; drop the resting opacity to 30% (hover
still restores full opacity so it stays discoverable).

* fix(studio): drop off-canvas indicator outline to 10% opacity

Follow-up to the 30% softening — 10% resting opacity reads much calmer
with many protruding elements; hover still restores full opacity.

* fix(studio): gate [hf-commit] console traces to dev only

The start/settled/persisted/restore lifecycle traces logged on every
gesture commit in all environments — console noise for end users. Route
them through a dev-only traceCommit helper (matching the pixel-violation
error's existing DEV gate). The commit_* PostHog events stay always on;
they are the production observability, the console lines are a dev aid.

* fix(studio): count actual reloads, not softReload requests, in commit telemetry

A resize's size and offset persists both request softReload; the seam
counted each request, so a batched gesture reported reload_count 2 even
though the batch is one write and one reload. Compute the count from what
dispatchBufferedCommits actually did — one for a batch, the request count
for the sequential fallback.

* fix(studio): rotate hover + off-canvas overlays with the element; flicker-free crop

- Hover overlay applied the element's rotation only to the selection chrome,
  not the hover box; it now rotates about center like the selection, via a
  shared orientedGroupAwareOverlayRect router (one owner for rotation-aware
  overlay geometry across hover/selection/off-canvas).
- Off-canvas indicator was axis-aligned; it now rotates with the element and
  inverse-rotates the canvas-exclusion clip into the element's local frame,
  so the protruding-sliver clip stays correct for rotated elements.
- Crop commit re-lifted the element only in the commit's .then(), so one
  frame painted the cropped state (the flicker). Re-lift synchronously right
  after onStyleCommit (which applies the clip before its first await), so the
  cropped state never paints; the persisted file value is unchanged.

* fix(studio): address code-review findings across the commit-hardening campaign

Correctness (would ship green, bite under latency):
- Enable-keyframes phase 2 now carries coalesceMs: Infinity, so the convert
  folds into one undo entry instead of splitting past the 300ms default.
- The SDK keyframe persist path forwards coalesceMs (CutoverOptions gains the
  field); multi-keyframe delete and convert coalesce correctly when SDK-routed.
- Razor split-all's rollback is guarded so a failing restore can't swallow the
  error toast that tells the user the split failed.

Simplification (single source of truth / no dead flexibility):
- Decompose resolveResizeDraftRect (drops a fallow-ignore suppression).
- Delegate the third readProjectFileContent copy to the shared helper.
- Inline setPatchFromUpdateProperties (its only caller passes one mutation).
- One toSdkPersistOptions translates gesture overrides to SDK options.
- Bundle the reorder-rollback deps into one object (was 7-9 positional args).
- Dedupe the 'last group reloads' ternary; type gesture options as
  CommitMutationOptions; drop a Map+array wrapper around a single write.

* feat(studio): atomic z-order reorder via batch patch-element endpoint

Z-order reorder issued N per-element inline-style patches (one server
write each), so a mid-chain failure could leave a partial reorder on disk.
Add a patch-elements-batch endpoint that validates every patch, folds them
over the file in one in-memory rewrite, and writes once (all-or-nothing;
unsafe input rejects with no write). The reorder now sends one batch per
source file and records one undo entry. Because a failed atomic write
persists nothing, the interim disk-write-back rollback (restoreReorderedFile
/ restoreFulfilledReorderFiles / ReorderRollbackDeps) is deleted — failure
rolls back only live DOM/store state. Closes the last disk-atomicity gap.

* fix(studio): razor-split undo no longer silently no-ops

The split clone was written to disk without a data-hf-id, so the split
endpoint recorded that unstamped HTML as the undo entry's afterHash. The
next reloadPreview() ran the preview route's ensureHfIds write-back, which
minted a fresh id and persisted DIFFERENT bytes — so at undo time the disk
hash no longer matched afterHash and editHistory's content-mismatch guard
silently refused the undo (no write, no network, no error). Stamp the split
output via ensureHfIds in splitElementInHtml before it is written/returned,
so the preview write-back is a no-op and the recorded afterHash always
equals the final on-disk bytes. Fixes at the source rather than relaxing the
mismatch guard. Corrects the stale comment that credited forceReloadSdkSession.

* feat(studio): closed-hand grab cursor on the rotate handle

The rotate handle used the default arrow cursor; show a grabbing
(closed-hand) cursor on hover to signal it's grabbed and dragged to rotate.

* fix(studio): dropping a dragged element over another no longer selects it

A moved drag's release fired the box click, which re-selected whatever now
sat under the pointer via the hover cache — so dropping an element over a
higher-z one selected the drop target instead of keeping the dragged
element selected. The drag-move branch now suppresses the next box click,
mirroring the resize branch.

* fix(studio): group drag is one undo entry, not one per element

Dragging a multi-selected group committed each member's position write as
its own undo entry, so reverting took N Cmd+Z presses. Force a shared
coalesceKey (infinite window) across every member's commit so they fold
into a single undo entry, like the other multi-step commit paths.

* fix(studio): undo of a split no longer leaves a ghost clip in the timeline

The file and the composition iframe revert correctly on undo, but the
timeline panel kept a ghost node for the split clone. The element-merge
that repopulates the timeline preserves elements the fresh scan dropped —
intended for enriched sub-composition children a bare DOM re-scan misses,
but it also preserved a genuinely-removed TOP-LEVEL element (the split
clone after undo), leaving a phantom clip. Restrict the preserve to
elements with a compositionSrc (the enriched sub-comp children); a
top-level element missing from the fresh scan was truly removed.

---------

Co-authored-by: ukimsanov <ular.kimsanov@heygen.com>
This commit is contained in:
Miguel Ángel
2026-07-13 02:55:36 -04:00
committed by GitHub
co-authored by ukimsanov
parent 9940503102
commit df29fa7a5e
228 changed files with 18774 additions and 7332 deletions
+81 -51
View File
@@ -1,10 +1,14 @@
import { useState, useCallback, useRef, useEffect } from "react";
import type { TimelineElement } from "../player";
import type { SelectElementOptions, TimelineElement } from "../player";
import {
getAllPreviewTargetsFromPointer,
getPreviewTargetFromPointer,
} from "../utils/studioPreviewHelpers";
import { resolveTimelineIdForSelection, type RightPanelTab } from "../utils/studioHelpers";
import {
findMatchingTimelineElementId,
findTimelineIdByAncestor,
type RightPanelTab,
} from "../utils/studioHelpers";
import {
domEditSelectionsTargetSame,
domEditSelectionInGroup,
@@ -20,7 +24,6 @@ import {
type DomEditSelection,
} from "../components/editor/domEditing";
import { reapplyPositionEditsAfterSeek } from "../components/editor/manualEdits";
import { usePlayerStore } from "../player/store/playerStore";
// ── Types ──
@@ -44,7 +47,7 @@ export interface UseDomSelectionParams {
captionEditMode: boolean;
previewIframeRef: React.MutableRefObject<HTMLIFrameElement | null>;
timelineElements: TimelineElement[];
setSelectedTimelineElementId: (id: string | null) => void;
setSelectedTimelineElementId: (id: string | null, options?: SelectElementOptions) => void;
setRightCollapsed: (collapsed: boolean) => void;
setRightPanelTab: (tab: RightPanelTab) => void;
previewIframe: HTMLIFrameElement | null;
@@ -92,6 +95,7 @@ export interface UseDomSelectionReturn {
) => Promise<DomEditSelection | null>;
handleTimelineElementSelect: (element: TimelineElement | null) => Promise<void>;
refreshDomEditSelectionFromPreview: (selection: DomEditSelection) => Promise<void>;
refreshDomEditGroupSelectionsFromPreview: (selections: DomEditSelection[]) => Promise<void>;
applyMarqueeSelection: (selections: DomEditSelection[], additive: boolean) => void;
}
@@ -206,42 +210,27 @@ export function useDomSelection({
if (nextSelection) {
if (options?.revealPanel !== false) {
setRightCollapsed(false);
// Keep the Variables tab in place — selecting elements is part of
// the bind flow there; yanking to Design would lose the context.
// Keep the Variables tab in place — selecting elements is part of the bind
// flow there; yanking to Design would lose the context.
if (rightPanelTabRef.current !== "variables") {
setRightPanelTab("design");
}
}
// Mirror the whole DOM group to the store so it stays the single source of
// truth: a single selection collapses to one id; a preserved group (echo
// during a gesture) keeps every member instead of shrinking to the anchor.
const anchorId = resolveTimelineIdForSelection(
nextSelection,
timelineElements,
activeCompPath,
);
const groupIds = nextGroup
.map((selection) =>
resolveTimelineIdForSelection(selection, timelineElements, activeCompPath),
)
.filter((id): id is string => Boolean(id));
if (groupIds.length > 0) {
usePlayerStore.getState().setSelection(groupIds, anchorId);
} else {
setSelectedTimelineElementId(anchorId);
}
const nextSelectedTimelineId =
findMatchingTimelineElementId(nextSelection, timelineElements) ??
findTimelineIdByAncestor(
nextSelection.element,
timelineElements,
nextSelection.sourceFile || "index.html",
);
// Late marquee notify: a primary already in the live set must not collapse it.
setSelectedTimelineElementId(nextSelectedTimelineId, { preserveSet: true });
return;
}
setSelectedTimelineElementId(null);
},
[
setSelectedTimelineElementId,
timelineElements,
setRightCollapsed,
setRightPanelTab,
activeCompPath,
],
[setSelectedTimelineElementId, timelineElements, setRightCollapsed, setRightPanelTab],
);
const clearDomSelection = useCallback(() => {
@@ -424,6 +413,55 @@ export function useDomSelection({
[activeCompPath, applyDomSelection, buildDomSelectionFromTarget, previewIframeRef],
);
const refreshDomEditGroupSelectionsFromPreview = useCallback(
// fallow-ignore-next-line complexity
async (selections: DomEditSelection[]) => {
const iframe = previewIframeRef.current;
let doc: Document | null = null;
try {
doc = iframe?.contentDocument ?? null;
} catch {
return;
}
if (!doc) return;
const nextGroup: DomEditSelection[] = [];
for (const selection of selections) {
const element = findElementForSelection(doc, selection, activeCompPath);
if (!element) continue;
const nextSelection = await buildDomSelectionFromTarget(element);
if (nextSelection) nextGroup.push(nextSelection);
}
if (nextGroup.length === 0) return;
const currentSelection = domEditSelectionRef.current;
const nextSelection =
nextGroup.find((selection) => domEditSelectionsTargetSame(selection, currentSelection)) ??
nextGroup[0] ??
null;
domEditSelectionRef.current = nextSelection;
domEditGroupSelectionsRef.current = nextGroup;
setDomEditSelection(nextSelection);
setDomEditGroupSelections(nextGroup);
if (nextSelection) {
setSelectedTimelineElementId(
findMatchingTimelineElementId(nextSelection, timelineElements),
);
} else {
setSelectedTimelineElementId(null);
}
},
[
activeCompPath,
buildDomSelectionFromTarget,
setSelectedTimelineElementId,
timelineElements,
previewIframeRef,
],
);
// ── Effects ──
// Clear hover unconditionally on composition/project/preview change
@@ -471,8 +509,7 @@ export function useDomSelection({
const applyMarqueeSelection = useCallback(
// fallow-ignore-next-line complexity
(selections: DomEditSelection[], additive: boolean) => {
// Honor the inspector-panels kill switch like applyDomSelection does, so
// marquee can't land selections while the inspector UI is suppressed.
// Honor the inspector-panels kill switch like applyDomSelection does.
if (!STUDIO_INSPECTOR_PANELS_ENABLED) {
domEditSelectionRef.current = null;
domEditGroupSelectionsRef.current = [];
@@ -493,8 +530,7 @@ export function useDomSelection({
if (!domEditSelectionInGroup(nextGroup, s)) nextGroup = [...nextGroup, s];
}
} else {
// Dedupe by target: under select-as-unit several marquee'd members collapse
// to the same group, which must count as one selection, not many duplicates.
// Dedupe by target: select-as-unit collapses marquee'd members to one group.
nextGroup = [];
for (const s of selections) {
if (!domEditSelectionInGroup(nextGroup, s)) nextGroup.push(s);
@@ -505,23 +541,16 @@ export function useDomSelection({
domEditGroupSelectionsRef.current = nextGroup;
setDomEditSelection(nextSelection);
setDomEditGroupSelections(nextGroup);
const nextTimelineId = resolveTimelineIdForSelection(
nextSelection,
timelineElements,
activeCompPath,
);
const nextTimelineIds = nextGroup
.map((selection) =>
resolveTimelineIdForSelection(selection, timelineElements, activeCompPath),
)
.filter((id): id is string => Boolean(id));
if (nextTimelineIds.length > 0) {
usePlayerStore.getState().setSelection(nextTimelineIds, nextTimelineId);
} else {
setSelectedTimelineElementId(null);
}
const nextTimelineId =
findMatchingTimelineElementId(nextSelection, timelineElements) ??
findTimelineIdByAncestor(
nextSelection.element,
timelineElements,
nextSelection.sourceFile || "index.html",
);
setSelectedTimelineElementId(nextTimelineId);
},
[applyDomSelection, timelineElements, setSelectedTimelineElementId, activeCompPath],
[applyDomSelection, timelineElements, setSelectedTimelineElementId],
);
// Disabled inspector effect
@@ -558,6 +587,7 @@ export function useDomSelection({
buildDomSelectionForTimelineElement,
handleTimelineElementSelect,
refreshDomEditSelectionFromPreview,
refreshDomEditGroupSelectionsFromPreview,
applyMarqueeSelection,
};
}