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prioritize visible CMs in refreshOnViewListener

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This commit is contained in:
tophf 2020-11-13 19:04:06 +03:00
parent a06697808f
commit b19fd0dabf
1 changed files with 11 additions and 4 deletions
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15
edit/sections-editor.js
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@ -647,11 +647,18 @@ function SectionsEditor() {
xo.observe(cm.display.wrapper); xo.observe(cm.display.wrapper);
} }
/** @param {IntersectionObserverEntry[]} entries */
function refreshOnViewListener(entries) { function refreshOnViewListener(entries) {
for (const {isIntersecting, target} of entries) { for (const e of entries) {
if (isIntersecting) { const r = e.isIntersecting && e.intersectionRect;
target.CodeMirror.refresh(); if (r) {
xo.unobserve(target); xo.unobserve(e.target);
const cm = e.target.CodeMirror;
if (r.bottom > 0 && r.top < window.innerHeight) {
cm.refresh();
} else {
setTimeout(() => cm.refresh());
}
} }
} }
} }