| /* |
| * 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 Util, window, document */ |
| |
| // Globals defined here |
| var WebUtil = {}, $D; |
| |
| /* |
| * Simple DOM selector by ID |
| */ |
| if (!window.$D) { |
| window.$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; |
| }; |