User:Nardog/CopySectLink.js

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This user script seems to have a documentation page at User:Nardog/CopySectLink.

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mw.config.get('wgNamespaceNumber') >= 0 &&
(function copySectLink() {
	let classes = 'copysectlink';
	let css;
	switch (mw.config.get('skin')) {
		case 'minerva':
			classes += ' mw-ui-icon mw-ui-icon-element mw-ui-icon-copy mw-ui-button mw-ui-quiet';
			css = '.collapsible-heading:not(.open-block) .copysectlink{visibility:hidden} .mw-editsection{white-space:nowrap}';
			break;
		case 'timeless':
			classes += ' mw-ui-icon-copy';
			css = '.copysectlink{background-color:#fff;margin-left:-1em} .copysectlink:first-of-type{margin-left:-20px;padding-left:0} .copysectlink::before{content:"";display:inline-block;width:16px;height:16px;background-size:16px 16px;vertical-align:bottom;opacity:0.5}';
	}
	if (css) mw.loader.addStyleTag(css);
	let handler = function (e) {
		e.preventDefault();
		let text = (mw.config.get('wgPageName') + (this.hash ? decodeURI(this.hash).replace(
			/[\[\]{|}]/g,
			s => '&#' + s.codePointAt(0) + ';'
		) : '')).replace(/_/g, ' ');
		let $input = $('<input>').attr({
			type: 'text',
			readonly: '',
			style: 'position:fixed;top:-100%'
		}).val(text).appendTo(document.body);
		$input[0].select();
		let copied;
		try {
			copied = document.execCommand('copy');
		} catch (e) {}
		$input.remove();
		if (copied) {
			mw.notify(`Copied "${text}"`);
		} else {
			mw.notify('Copy failed', { type: 'error' });
		}
	};
	let addButton = function (isFirst) {
		isFirst = isFirst === true;
		let hn = isFirst ? this : this.parentElement;
		if (hn.querySelector('.copysectlink')) return;
		let url = mw.util.getUrl();
		if (!isFirst) {
			let id = this.id || $(this).data('id');
			if (!id) return;
			url += '#' + encodeURI(id);
		}
		let $button = $('<a>').attr({
			class: classes,
			href: url,
			role: 'button'
		}).text('copy').click(handler);
		if (mw.config.get('skin') === 'minerva') {
			$button.addClass('mw-ui-icon mw-ui-icon-element').attr('title', 'Copy');
			let wrapper = hn.querySelector('.mw-editsection');
			if (wrapper) {
				$button.prependTo(wrapper);
			} else {
				$button.appendTo(hn);
			}
		} else {
			let bracket = hn.querySelector('.mw-editsection-bracket:last-child');
			if (bracket) {
				bracket.insertAdjacentText('beforebegin', ' | ');
			} else {
				bracket = $('<span>').addClass('mw-editsection-bracket').text(']')[0];
				$('<span>').addClass('mw-editsection').append(
					$('<span>').addClass('mw-editsection-bracket').text('['),
					bracket
				).appendTo(hn);
			}
			$button.insertBefore(bracket);
		}
	};
	let dependencies = ['mediawiki.util'];
	if (css) {
		dependencies.push('oojs-ui.styles.icons-editing-advanced');
	}
	if (['view', 'purge'].includes(mw.config.get('wgAction'))) {
		['ext.gadget.edittop', 'ext.gadget.edit0'].forEach(m => {
			let state = mw.loader.getState(m);
			if (state && state !== 'registered') dependencies.push(m);
		});
	}
	$.when($.ready, mw.loader.using(dependencies)).then(() => {
		addButton.call(document.getElementById('firstHeading'), true);
		mw.hook('wikipage.content').add($content => {
			$content.find('.mw-headline').each(addButton);
		});
	});
}());