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firefox/browser/extensions/webcompat/injections/js/bug1939248-rosasthai.com-load-event-helper.js
Daniel Baumann 5e9a113729
Adding upstream version 140.0.
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
2025-06-25 09:37:52 +02:00

42 lines
1.4 KiB
JavaScript

/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
"use strict";
/**
* Bug 1939248 - Load event listener issue on rosasthai.com
* WebCompat issue #145642 - https://webcompat.com/issues/145642
*
* The site assumes that its code will run before the window load event, and
* so their buttons will not function properly if that is untrue. We can call
* those event listeners immediately as they try to add them, if the document
* readyState is already "complete", which fixes this bug.
*/
/* globals exportFunction */
console.info(
"running late window load listeners for compatibility reasons. See https://bugzilla.mozilla.org/show_bug.cgi?id=1939248 for details."
);
(function runLateWindowLoadEventListenersImmediately() {
const { prototype } = window.wrappedJSObject.EventTarget;
const { addEventListener } = prototype;
prototype.addEventListener = exportFunction(function (type, b, c, d) {
if (
this !== window ||
document?.readyState !== "complete" ||
type?.toLowerCase() !== "load"
) {
return addEventListener.call(this, type, b, c, d);
}
console.log("window.addEventListener(load) called too late, so calling", b);
try {
b?.call();
} catch (e) {
console.error(e);
}
return undefined;
}, window);
})();