======= HisInOne GreaseMonkey Script zum direkten Anzeigen der Raum-IDs =======

Quick and Dirty Script, um im His automatisch die roomId in den Suchergebnissen und Detailseiten zu Räumen anzuzeigen (direkt neben Raumname).

**@match** anpassen nicht vergessen!

	// ==UserScript==
	// @name         Show HISinOne room ids
	// @version      0.2
	// @description  try to take over the world!
	// @author       You
	// @match        https://campus.uni-freiburg.de/*
	// ==/UserScript==
	
	(function() {
		'use strict';
		var COMPLETED_READY_STATE = 4;
		var RealXHRSend = XMLHttpRequest.prototype.send;
		function proxifyOnReadyStateChange(xhr) {
			if (xhr.hasMyProxy) return;
			xhr.hasMyProxy = true;
			var realOnReadyStateChange = xhr.onreadystatechange;
			xhr.onreadystatechange = function() {
				var r;
				if (realOnReadyStateChange) {
					r = realOnReadyStateChange();
				}
				if( xhr.readyState === COMPLETED_READY_STATE ) {
					ajaxCompleted(xhr);
				}
				return r;
			};
		}
		// Wire
		(function() {
			// Override send method of all XHR requests
			console.log('Patching send');
			XMLHttpRequest.prototype.send = function() {
				// Wire response callbacks
				var r = RealXHRSend.apply(this, arguments);
				proxifyOnReadyStateChange(this);
				return r;
			};
		})();
		function ajaxCompleted(xhr) {
			setTimeout(showRoomIds, 100);
		}
		function showRoomIds() {
			var btns = document.querySelectorAll('BUTTON.linkTable');
			var data;
			for (var b = 0; b < btns.length; ++b) {
				if (!btns[b].onclick) continue;
				if (btns[b].hasRid) continue;
				btns[b].hasRid = true;
				if (btns[b].getElementsByTagName('SPAN').length === 0) continue;
				data = btns[b].onclick.toString().match(/\['(?:room|entity)Id','(\d+)']/);
				if (!data || data.length < 2) continue;
				btns[b].parentNode.appendChild(document.createTextNode(' (RID: ' + data[1] + ')'));
			}
			data = false;
			var txt = document.getElementById('plan:permalink:permalinkPopup:permalink')
				|| document.getElementById('roomDetail:top:permalink:permalinkPopup:permalink');
			if (txt && txt.value) {
				data = txt.value.match(/roomId=(\d+)(&|$)/);
			}
			if (!data || data.length < 2) {
				txt = document.querySelectorAll('optgroup option[selected]');
				if (txt && txt.length) {
					for (b = 0; b < txt.length; ++b) {
						if (txt[b].value && txt[b].value.match(/^\d+$/)) {
							data = [ 0, txt[b].value ];
							break;
						}
					}
				}
			}
			if (data && data.length > 1) {
				var dst = document.getElementById('hisinoneTitle') || txt.parentNode;
				if (!dst.hasRid) {
					dst.hasRid = true;
					dst.appendChild(document.createTextNode(' (RID: ' + data[1] + ')'));
				}
			}
		}
		showRoomIds();
	})();