User:LiteraGame/common.js

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//All code here is from my common.js pages from the Minecarft Wikis and Meta MCW <https://minecraft.wiki/>

// HotCat
mw.loader.load('https://commons.wikimedia.org/w/index.php?title=MediaWiki:Gadget-HotCat.js&action=raw&ctype=text/javascript');

// "Back to top"
$(function(){
	var i18n = {
		header: 'Back to Top'
	};
	
	new ResizeObserver(function(entries) {
		if (window.innerWidth <= 720) {
			$('#mw-panel').css('height', '');
		}
		else {
			$('#mw-panel').css('height', document.body.scrollHeight - 10);
		}
	}).observe($('#content')[0]);
	new ResizeObserver(function(entries) {
		if ( document.body.scrollHeight < $('#mw-panel')[0].scrollHeight ) {
			$('#p-btt').css('position', 'sticky');
		}
		else {
			$('#p-btt').css('position', '');
		}
	}).observe($('#mw-panel')[0]);
	$('<nav id="p-btt" class="vector-menu mw-portlet mw-portlet-btt vector-menu-portal portal collapsed" aria-labelledby="p-btt-label" role="navigation">').append(
	    $('<h3 id="p-btt-label" class="vector-menu-heading" tabindex="0">').append(
	        $('<span class="vector-menu-heading-label">').text(i18n.header)
	    ).on("keypress", function(event) {
			if (event.which == 13) {
				$(this).trigger("click");
				event.stopImmediatePropagation()
			}
		}).on("click", function(event) {
			var isReduced = window.matchMedia('(prefers-reduced-motion: reduce)').matches;
			event.stopPropagation();
			window.scrollTo({top: 0, behavior: isReduced ? 'instant' : 'smooth'});
		})
	).appendTo('#mw-panel');
});