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ENSShared

Shared code for my scripts

Dieses Skript sollte nicht direkt installiert werden. Es handelt sich hier um eine Bibliothek für andere Skripte, welche über folgenden Befehl in den Metadaten eines Skriptes eingebunden wird // @require https://update.greasyfork.org/scripts/446540/1061588/ENSShared.js 

const c = document.createElement("canvas");
const ctx = c.getContext("2d");

const imageToBlob = (imageURL) => {
	const img = new Image;
	img.crossOrigin = "";
	img.src = imageURL;
	return new Promise(resolve => {
		img.onload = function () {
			c.width = this.naturalWidth;
			c.height = this.naturalHeight;
			ctx.drawImage(this, 0, 0);
			c.toBlob((blob) => {
				resolve(blob)
			}, "image/png", 0.75);
		};
	})
}

const toggleAttribute = (elem, attr, val) => {
	const tgattr = (elem, attr, val) => {
		if (elem.hasAttribute(attr)) {
			let atrval = elem.getAttribute(attr);
			if (atrval.includes(val)) {
				let rep = atrval.replace(val, '');
				!rep.length ? elem.removeAttribute(attr) : elem.setAttribute(attr, rep);
			} else elem.setAttribute(attr, elem.getAttribute(attr) + val);
		} else elem.setAttribute(attr, val);
	}

	if (elem instanceof Array) {
		for (let key in elem) {
			tgattr(elem[key], attr, val);
		}
	} else tgattr(elem, attr, val);
}

const awaitSelector = (selector) => {
	return new Promise((resolve) => {
		const nodes = [];
		setInterval(() => {
			if (nodes.length !== 0) {
				clearInterval(tm);
				resolve(nodes);
			}
			nodes.splice(nodes.length, 0, ...document.querySelectorAll(selector));
		}, 100);
	});
}