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149 lines
4.1 KiB
149 lines
4.1 KiB
/*
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* noVNC: HTML5 VNC client
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* Copyright (C) 2012 Joel Martin
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* Licensed under LGPL-3 (see LICENSE.txt)
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*
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* See README.md for usage and integration instructions.
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*/
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"use strict";
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/*jslint bitwise: false, white: false */
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/*global Util, window, document */
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// Globals defined here
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var WebUtil = {}, $D;
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/*
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* Simple DOM selector by ID
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*/
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if (!window.$D) {
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window.$D = function (id) {
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if (document.getElementById) {
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return document.getElementById(id);
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} else if (document.all) {
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return document.all[id];
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} else if (document.layers) {
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return document.layers[id];
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}
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return undefined;
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};
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}
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/*
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* ------------------------------------------------------
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* Namespaced in WebUtil
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* ------------------------------------------------------
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*/
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// init log level reading the logging HTTP param
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WebUtil.init_logging = function() {
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Util._log_level = (document.location.href.match(
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/logging=([A-Za-z0-9\._\-]*)/) ||
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['', Util._log_level])[1];
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Util.init_logging();
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};
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WebUtil.init_logging();
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WebUtil.dirObj = function (obj, depth, parent) {
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var i, msg = "", val = "";
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if (! depth) { depth=2; }
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if (! parent) { parent= ""; }
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// Print the properties of the passed-in object
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for (i in obj) {
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if ((depth > 1) && (typeof obj[i] === "object")) {
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// Recurse attributes that are objects
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msg += WebUtil.dirObj(obj[i], depth-1, parent + "." + i);
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} else {
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//val = new String(obj[i]).replace("\n", " ");
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if (typeof(obj[i]) === "undefined") {
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val = "undefined";
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} else {
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val = obj[i].toString().replace("\n", " ");
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}
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if (val.length > 30) {
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val = val.substr(0,30) + "...";
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}
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msg += parent + "." + i + ": " + val + "\n";
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}
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}
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return msg;
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};
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// Read a query string variable
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WebUtil.getQueryVar = function(name, defVal) {
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var re = new RegExp('[?][^#]*' + name + '=([^&#]*)');
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if (typeof defVal === 'undefined') { defVal = null; }
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return (document.location.href.match(re) || ['',defVal])[1];
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};
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/*
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* Cookie handling. Dervied from: http://www.quirksmode.org/js/cookies.html
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*/
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// No days means only for this browser session
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WebUtil.createCookie = function(name,value,days) {
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var date, expires;
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if (days) {
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date = new Date();
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date.setTime(date.getTime()+(days*24*60*60*1000));
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expires = "; expires="+date.toGMTString();
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}
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else {
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expires = "";
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}
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document.cookie = name+"="+value+expires+"; path=/";
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};
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WebUtil.readCookie = function(name, defaultValue) {
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var i, c, nameEQ = name + "=", ca = document.cookie.split(';');
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for(i=0; i < ca.length; i += 1) {
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c = ca[i];
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while (c.charAt(0) === ' ') { c = c.substring(1,c.length); }
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if (c.indexOf(nameEQ) === 0) { return c.substring(nameEQ.length,c.length); }
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}
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return (typeof defaultValue !== 'undefined') ? defaultValue : null;
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};
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WebUtil.eraseCookie = function(name) {
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WebUtil.createCookie(name,"",-1);
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};
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/*
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* Alternate stylesheet selection
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*/
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WebUtil.getStylesheets = function() { var i, links, sheets = [];
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links = document.getElementsByTagName("link");
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for (i = 0; i < links.length; i += 1) {
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if (links[i].title &&
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links[i].rel.toUpperCase().indexOf("STYLESHEET") > -1) {
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sheets.push(links[i]);
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}
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}
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return sheets;
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};
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// No sheet means try and use value from cookie, null sheet used to
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// clear all alternates.
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WebUtil.selectStylesheet = function(sheet) {
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var i, link, sheets = WebUtil.getStylesheets();
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if (typeof sheet === 'undefined') {
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sheet = 'default';
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}
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for (i=0; i < sheets.length; i += 1) {
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link = sheets[i];
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if (link.title === sheet) {
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Util.Debug("Using stylesheet " + sheet);
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link.disabled = false;
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} else {
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//Util.Debug("Skipping stylesheet " + link.title);
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link.disabled = true;
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}
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}
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return sheet;
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};
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