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Polyfill SubmitEvent for PaleMoon (#28441) (#28478)

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Backport #28441 by wxiaoguang

Fix #28319

It only polyfills if there is no "SubmitEvent" class, so it has no side
effect for most users.

Co-authored-by: wxiaoguang <wxiaoguang@gmail.com>
(cherry picked from commit 6af698fb81)
This commit is contained in:
Giteabot 2023-12-15 11:04:37 +08:00 • committed by Earl Warren
parent 3c6edfa5e2
commit 2b991b32eb
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6 changed files with 31 additions and 7 deletions
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21
web_src/js/utils/dom.js
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@ -194,3 +194,24 @@ export function loadElem(el, src) {
el.src = src;
});
}
// some browsers like PaleMoon don't have "SubmitEvent" support, so polyfill it by a tricky method: use the last clicked button as submitter
// it can't use other transparent polyfill patches because PaleMoon also doesn't support "addEventListener(capture)"
const needSubmitEventPolyfill = typeof SubmitEvent === 'undefined';
export function submitEventSubmitter(e) {
return needSubmitEventPolyfill ? (e.target._submitter || null) : e.submitter;
}
function submitEventPolyfillListener(e) {
const form = e.target.closest('form');
if (!form) return;
form._submitter = e.target.closest('button:not([type]), button[type="submit"], input[type="submit"]');
}
export function initSubmitEventPolyfill() {
if (!needSubmitEventPolyfill) return;
console.warn(`This browser doesn't have "SubmitEvent" support, use a tricky method to polyfill`);
document.body.addEventListener('click', submitEventPolyfillListener);
document.body.addEventListener('focus', submitEventPolyfillListener);
}