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+/*
+ * noVNC: HTML5 VNC client
+ * Copyright (C) 2011 Joel Martin
+ * Licensed under LGPL-3 (see LICENSE.txt)
+ *
+ * See README.md for usage and integration instructions.
+ */
+
+"use strict";
+/*jslint bitwise: false, white: false */
+/*global window, document */
+
+// Globals defined here
+var WebUtil = {}, $D;
+
+/*
+ * Simple DOM selector by ID
+ */
+if (!window.$D) {
+ $D = function (id) {
+ if (document.getElementById) {
+ return document.getElementById(id);
+ } else if (document.all) {
+ return document.all[id];
+ } else if (document.layers) {
+ return document.layers[id];
+ }
+ return undefined;
+ };
+}
+
+
+/*
+ * ------------------------------------------------------
+ * Namespaced in WebUtil
+ * ------------------------------------------------------
+ */
+
+// init log level reading the logging HTTP param
+WebUtil.init_logging = function() {
+ Util._log_level = (document.location.href.match(
+ /logging=([A-Za-z0-9\._\-]*)/) ||
+ ['', Util._log_level])[1];
+
+ Util.init_logging()
+}
+WebUtil.init_logging();
+
+
+WebUtil.dirObj = function (obj, depth, parent) {
+ var i, msg = "", val = "";
+ if (! depth) { depth=2; }
+ if (! parent) { parent= ""; }
+
+ // Print the properties of the passed-in object
+ for (i in obj) {
+ if ((depth > 1) && (typeof obj[i] === "object")) {
+ // Recurse attributes that are objects
+ msg += WebUtil.dirObj(obj[i], depth-1, parent + "." + i);
+ } else {
+ //val = new String(obj[i]).replace("\n", " ");
+ if (typeof(obj[i]) === "undefined") {
+ val = "undefined";
+ } else {
+ val = obj[i].toString().replace("\n", " ");
+ }
+ if (val.length > 30) {
+ val = val.substr(0,30) + "...";
+ }
+ msg += parent + "." + i + ": " + val + "\n";
+ }
+ }
+ return msg;
+};
+
+// Read a query string variable
+WebUtil.getQueryVar = function(name, defVal) {
+ var re = new RegExp('[?][^#]*' + name + '=([^&#]*)');
+ if (typeof defVal === 'undefined') { defVal = null; }
+ return (document.location.href.match(re) || ['',defVal])[1];
+};
+
+
+/*
+ * Cookie handling. Dervied from: http://www.quirksmode.org/js/cookies.html
+ */
+
+// No days means only for this browser session
+WebUtil.createCookie = function(name,value,days) {
+ var date, expires;
+ if (days) {
+ date = new Date();
+ date.setTime(date.getTime()+(days*24*60*60*1000));
+ expires = "; expires="+date.toGMTString();
+ }
+ else {
+ expires = "";
+ }
+ document.cookie = name+"="+value+expires+"; path=/";
+};
+
+WebUtil.readCookie = function(name, defaultValue) {
+ var i, c, nameEQ = name + "=", ca = document.cookie.split(';');
+ for(i=0; i < ca.length; i += 1) {
+ c = ca[i];
+ while (c.charAt(0) === ' ') { c = c.substring(1,c.length); }
+ if (c.indexOf(nameEQ) === 0) { return c.substring(nameEQ.length,c.length); }
+ }
+ return (typeof defaultValue !== 'undefined') ? defaultValue : null;
+};
+
+WebUtil.eraseCookie = function(name) {
+ WebUtil.createCookie(name,"",-1);
+};
+
+/*
+ * Alternate stylesheet selection
+ */
+WebUtil.getStylesheets = function() { var i, links, sheets = [];
+ links = document.getElementsByTagName("link");
+ for (i = 0; i < links.length; i += 1) {
+ if (links[i].title &&
+ links[i].rel.toUpperCase().indexOf("STYLESHEET") > -1) {
+ sheets.push(links[i]);
+ }
+ }
+ return sheets;
+};
+
+// No sheet means try and use value from cookie, null sheet used to
+// clear all alternates.
+WebUtil.selectStylesheet = function(sheet) {
+ var i, link, sheets = WebUtil.getStylesheets();
+ if (typeof sheet === 'undefined') {
+ sheet = 'default';
+ }
+ for (i=0; i < sheets.length; i += 1) {
+ link = sheets[i];
+ if (link.title === sheet) {
+ Util.Debug("Using stylesheet " + sheet);
+ link.disabled = false;
+ } else {
+ //Util.Debug("Skipping stylesheet " + link.title);
+ link.disabled = true;
+ }
+ }
+ return sheet;
+};