9DB Raid Finder: Fix focus detection

Fixes the focus detection on the 9DB Pokémon GO Raid Finder

安裝腳本 ?

Wrap lines

// ==UserScript==
// @name        9DB Raid Finder: Fix focus detection
// @namespace   m43v6blcjzeaiq6oh9
// @match       https://9db.jp/pokego/data/62
// @match       https://9db.jp/pokemongo/data/9906
// @grant       none
// @version     1.0
// @description Fixes the focus detection on the 9DB Pokémon GO Raid Finder
// @run-at      document-start
// @inject-into content
// @license     MIT
// ==/UserScript==
 
(function () {
	"use strict";
 
	const { CustomEvent } = window, { WeakSet } = globalThis;
 
	// Block blur/focus events on window,
	// except the fake ones we create
	const whitelistedEvents = new WeakSet();
	const filterEvents = (event) => {
		// .delete() returns true if the element was actually removed
		if (!whitelistedEvents.delete(event)) {
			event.stopImmediatePropagation?.();
		}
	};
 
	window.addEventListener("blur",  filterEvents, { passive: true });
	window.addEventListener("focus", filterEvents, { passive: true });
 
	// Convert visibility events to blur/focus events
	window.addEventListener("visibilitychange", function () {
		const fakeEvent = new CustomEvent((document.visibilityState === "hidden") ? "blur" : "focus");
 
		whitelistedEvents.add(fakeEvent);
		this.dispatchEvent(fakeEvent);
	});
})();

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