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Diffstat (limited to 'webclients/novnc/include/webutil.js')
-rw-r--r-- | webclients/novnc/include/webutil.js | 148 |
1 files changed, 148 insertions, 0 deletions
diff --git a/webclients/novnc/include/webutil.js b/webclients/novnc/include/webutil.js new file mode 100644 index 0000000..95138f8 --- /dev/null +++ b/webclients/novnc/include/webutil.js @@ -0,0 +1,148 @@ +/* + * 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; +}; |