User:Awesome Aasim/copycodeblock.js

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This user script seems to have a documentation page at User:Awesome Aasim/copycodeblock.

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(function copyCodeBlock() {
	$(document).ready(function() {
		let $pres = $("#mw-content-text").find('pre').not('form *');
		if (!$pres.length) return;
		mw.loader.addStyleTag('.copycodeblock-block{position:relative} .copycodeblock{position:absolute;top:0;right:0} :not(:hover) > .copycodeblock:not(:focus-within){opacity:0}');
		mw.loader.using(['oojs-ui-core', 'oojs-ui.styles.icons-editing-advanced', 'oojs-ui.styles.icons-interactions'], function() {
			$pres.each(function() {
				let $pre = $(this);
				let button = new OO.ui.ButtonWidget({
					classes: ['copycodeblock'],
					framed: false,
					icon: 'copy',
					title: 'Copy to clipboard',
				});
				function afterSuccess() {
					button.setIcon("checkAll");
					button.setLabel("Copied!");
					window.setTimeout(function() {
						button.setIcon("copy");
						button.setLabel("");
					}, 3000);
				}
				button.$element.click(async function() {
					try {
						if (button.isDisabled()) return;
						var canRead = await navigator.permissions.query({ name: 'clipboard-read' });
						var clipboardData;
						if (canRead.state == "prompt") {
							button.setLabel("Awaiting clipboard permissions...");
							await navigator.clipboard.readText();
						}
						clipboardData = await navigator.clipboard.readText();
						var value = $pre.text();
						if (clipboardData == undefined || value != clipboardData) {
							await navigator.clipboard.writeText(value);
						}
						afterSuccess();
					} catch (e) {
						console.error(e);
						alert("Copy failed.");
					}
				});
				$pre.addClass('copycodeblock-block').append(button.$element);
			})
		});
	});
}());