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cache closed shadow dom content windows

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siikamiika 2020-04-18 17:54:49 +03:00
parent 66354f1f9e
commit 691b739849
1 changed files with 6 additions and 1 deletions
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7
ext/fg/js/frame-offset-forwarder.js
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@ -23,6 +23,7 @@ class FrameOffsetForwarder {
constructor() {
this._started = false;
this._frameCache = new Set();
this._unreachableContentWindowCache = new Set();
this._forwardFrameOffset = (
window !== window.parent ?
@ -74,9 +75,13 @@ class FrameOffsetForwarder {
}
_onGetFrameOffset(offset, uniqueId, e) {
const sourceFrame = this._findFrameWithContentWindow(e.source);
let sourceFrame = null;
if (!this._unreachableContentWindowCache.has(e.source)) {
sourceFrame = this._findFrameWithContentWindow(e.source);
}
if (sourceFrame === null) {
// closed shadow root etc.
this._unreachableContentWindowCache.add(e.source);
this._forwardFrameOffsetOrigin(null, uniqueId);
return;
}