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Fix newtab on older FF versions

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Oliver Blanthorn 2026-08-01 10:52:27 +02:00
parent 1f4c5a2c33
commit 63bb26908f
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GPG key ID: 2BB8C36BB504BFF3
1 changed files with 13 additions and 1 deletions
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14
src/content.ts
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@ -186,13 +186,25 @@ function onIframeLoad(event: Event) {
listenInIframe(event.currentTarget as FrameElement)
}
// workaround for FF140 era bug https://bugzilla.mozilla.org/show_bug.cgi?id=2035665
// which left inaccessible <details> shadow roots accessible but unusable
function isUsableShadowRoot(root: ShadowRoot, host: Element) {
try {
const node = host.ownerDocument?.defaultView?.Node
return !!node && root instanceof node
} catch {
return false
}
}
function discoverIframes(root: IframeRoot | Element) {
for (const element of [root as Element, ...root.querySelectorAll("*")]) {
if (["iframe", "frame"].includes(element.localName)) {
listenInIframe(element as FrameElement)
}
const shadowRoot = (element as HTMLElement).openOrClosedShadowRoot
if (shadowRoot) observeIframeRoot(shadowRoot)
if (shadowRoot && isUsableShadowRoot(shadowRoot, element))
observeIframeRoot(shadowRoot)
}
}