MediaWiki:Gadget-countWLH.js

// Add the total numbers of links and transclusions to WhatLinksHere pages
// Authors: RheingoldRiver, Rye Greenwood, Volodyslav

$(document).ready(function() {
	if (mw.config.get('wgCanonicalSpecialPageName') !== 'Whatlinkshere') return;
	
	// get WLH page title and namespace from the form input fields
	var title = $('#mw-whatlinkshere-target input').val();
	var ns = $('#namespace > select').val();
	var invert = $('input[name="invert"]').attr('checked') == undefined ? false : true;
	title = title ? title : mw.config.get('wgTitle').replace('WhatLinksHere/', ''); // if failed, get title from URL
	
	// fetch data
	return new mw.Api().get({
		action : 'query',
		prop : 'linkshere|transcludedin|redirects',
		titles : title,
		lhlimit : 'max',
		tilimit : 'max',
		lhnamespace : invert ? '*' : (ns === '' ? '*' : ns),
		tinamespace : invert ? '*' : (ns === '' ? '*' : ns),
		rdnamespace : invert ? '*' : (ns === '' ? '*' : ns),
	}).then(function(data) {
		var Count = {links:0,redirs:0,trans:0};
		var terms = {links:'linkshere',redirs:'redirects',trans:'transcludedin'};
		// extract information from the API result
		for (var p in data.query.pages) {
			var page = data.query.pages[p];
			for ( var t in terms ) {
				for ( var i in page[terms[t]] ) {
					if ( invert ) {
						Count[t] += page[terms[t]][i].ns != ns ? 1 : 0;
					} else {
						Count[t] ++;
					}
				}
			}
		}
		// inject
		for ( var i in Count ){
			var label = $('#mw-input-hide'+i).parent().parent().find('label');
			label.text( label.text() + ' (' + Count[i] + ')' );
		}
	});
});