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editor: resolve virtualization scroll container lazily

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This commit is contained in:
Ammar Ahmed
2026-08-21 11:37:36 +05:00
parent ae6dd0009b
commit d8fe38dc01
1 changed files with 8 additions and 3 deletions
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11
packages/editor/src/extensions/virtualization/viewport-plugin.ts
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@@ -109,9 +109,7 @@ export function virtualizationPlugin(): Plugin<VirtualizationState> {
let observer: IntersectionObserver | null = null;
let frame = 0;
const intersecting = new Set<string>();
const scrollParent = findScrollParent(editorView.dom);
if (scrollParent) scrollParent.style.overflowAnchor = "none";
let scrollParent: HTMLElement | null = null;
const flush = () => {
frame = 0;
@@ -153,6 +151,13 @@ export function virtualizationPlugin(): Plugin<VirtualizationState> {
const observe = () => {
observer?.disconnect();
// Resolve the scroll container lazily: at view-init the document may be
// empty (no overflow yet), so it must be re-resolved once content grows.
const resolved = findScrollParent(editorView.dom);
if (resolved && resolved !== scrollParent) {
resolved.style.overflowAnchor = "none";
scrollParent = resolved;
}
observer = new IntersectionObserver(onIntersect, {
root: scrollParent,
// one viewport of overscan in each direction