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author | Christian Beier <[email protected]> | 2018-10-01 20:50:35 +0200 |
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committer | Christian Beier <[email protected]> | 2018-10-01 20:50:35 +0200 |
commit | ffe33574918cf31926ed37caef12f24e73b2d478 (patch) | |
tree | a5402503529c20741556306aff0275ddaa44b159 /webclients/novnc/app/webutil.js | |
parent | de3a2f46b5c4913ba55dfb8c6f7c8b52136bf27a (diff) | |
download | libtdevnc-ffe33574918cf31926ed37caef12f24e73b2d478.tar.gz libtdevnc-ffe33574918cf31926ed37caef12f24e73b2d478.zip |
Update bundled noVNC to latest release 1.0.0
Closes #148
Diffstat (limited to 'webclients/novnc/app/webutil.js')
-rw-r--r-- | webclients/novnc/app/webutil.js | 230 |
1 files changed, 230 insertions, 0 deletions
diff --git a/webclients/novnc/app/webutil.js b/webclients/novnc/app/webutil.js new file mode 100644 index 0000000..249a138 --- /dev/null +++ b/webclients/novnc/app/webutil.js @@ -0,0 +1,230 @@ +/* + * noVNC: HTML5 VNC client + * Copyright (C) 2012 Joel Martin + * Copyright (C) 2013 NTT corp. + * Licensed under MPL 2.0 (see LICENSE.txt) + * + * See README.md for usage and integration instructions. + */ + +import { init_logging as main_init_logging } from '../core/util/logging.js'; + +// init log level reading the logging HTTP param +export function init_logging (level) { + "use strict"; + if (typeof level !== "undefined") { + main_init_logging(level); + } else { + var param = document.location.href.match(/logging=([A-Za-z0-9\._\-]*)/); + main_init_logging(param || undefined); + } +}; + +// Read a query string variable +export function getQueryVar (name, defVal) { + "use strict"; + var re = new RegExp('.*[?&]' + name + '=([^&#]*)'), + match = document.location.href.match(re); + if (typeof defVal === 'undefined') { defVal = null; } + if (match) { + return decodeURIComponent(match[1]); + } else { + return defVal; + } +}; + +// Read a hash fragment variable +export function getHashVar (name, defVal) { + "use strict"; + var re = new RegExp('.*[&#]' + name + '=([^&]*)'), + match = document.location.hash.match(re); + if (typeof defVal === 'undefined') { defVal = null; } + if (match) { + return decodeURIComponent(match[1]); + } else { + return defVal; + } +}; + +// Read a variable from the fragment or the query string +// Fragment takes precedence +export function getConfigVar (name, defVal) { + "use strict"; + var val = getHashVar(name); + if (val === null) { + val = getQueryVar(name, defVal); + } + return val; +}; + +/* + * Cookie handling. Dervied from: http://www.quirksmode.org/js/cookies.html + */ + +// No days means only for this browser session +export function createCookie (name, value, days) { + "use strict"; + var date, expires; + if (days) { + date = new Date(); + date.setTime(date.getTime() + (days * 24 * 60 * 60 * 1000)); + expires = "; expires=" + date.toGMTString(); + } else { + expires = ""; + } + + var secure; + if (document.location.protocol === "https:") { + secure = "; secure"; + } else { + secure = ""; + } + document.cookie = name + "=" + value + expires + "; path=/" + secure; +}; + +export function readCookie (name, defaultValue) { + "use strict"; + var nameEQ = name + "=", + ca = document.cookie.split(';'); + + for (var i = 0; i < ca.length; i += 1) { + var 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; +}; + +export function eraseCookie (name) { + "use strict"; + createCookie(name, "", -1); +}; + +/* + * Setting handling. + */ + +var settings = {}; + +export function initSettings (callback /*, ...callbackArgs */) { + "use strict"; + var callbackArgs = Array.prototype.slice.call(arguments, 1); + if (window.chrome && window.chrome.storage) { + window.chrome.storage.sync.get(function (cfg) { + settings = cfg; + if (callback) { + callback.apply(this, callbackArgs); + } + }); + } else { + // No-op + if (callback) { + callback.apply(this, callbackArgs); + } + } +}; + +// No days means only for this browser session +export function writeSetting (name, value) { + "use strict"; + if (window.chrome && window.chrome.storage) { + if (settings[name] !== value) { + settings[name] = value; + window.chrome.storage.sync.set(settings); + } + } else { + localStorage.setItem(name, value); + } +}; + +export function readSetting (name, defaultValue) { + "use strict"; + var value; + if (window.chrome && window.chrome.storage) { + value = settings[name]; + } else { + value = localStorage.getItem(name); + } + if (typeof value === "undefined") { + value = null; + } + if (value === null && typeof defaultValue !== "undefined") { + return defaultValue; + } else { + return value; + } +}; + +export function eraseSetting (name) { + "use strict"; + if (window.chrome && window.chrome.storage) { + window.chrome.storage.sync.remove(name); + delete settings[name]; + } else { + localStorage.removeItem(name); + } +}; + +export function injectParamIfMissing (path, param, value) { + // force pretend that we're dealing with a relative path + // (assume that we wanted an extra if we pass one in) + path = "/" + path; + + var elem = document.createElement('a'); + elem.href = path; + + var param_eq = encodeURIComponent(param) + "="; + var query; + if (elem.search) { + query = elem.search.slice(1).split('&'); + } else { + query = []; + } + + if (!query.some(function (v) { return v.startsWith(param_eq); })) { + query.push(param_eq + encodeURIComponent(value)); + elem.search = "?" + query.join("&"); + } + + // some browsers (e.g. IE11) may occasionally omit the leading slash + // in the elem.pathname string. Handle that case gracefully. + if (elem.pathname.charAt(0) == "/") { + return elem.pathname.slice(1) + elem.search + elem.hash; + } else { + return elem.pathname + elem.search + elem.hash; + } +}; + +// sadly, we can't use the Fetch API until we decide to drop +// IE11 support or polyfill promises and fetch in IE11. +// resolve will receive an object on success, while reject +// will receive either an event or an error on failure. +export function fetchJSON(path, resolve, reject) { + // NB: IE11 doesn't support JSON as a responseType + var req = new XMLHttpRequest(); + req.open('GET', path); + + req.onload = function () { + if (req.status === 200) { + try { + var resObj = JSON.parse(req.responseText); + } catch (err) { + reject(err); + return; + } + resolve(resObj); + } else { + reject(new Error("XHR got non-200 status while trying to load '" + path + "': " + req.status)); + } + }; + + req.onerror = function (evt) { + reject(new Error("XHR encountered an error while trying to load '" + path + "': " + evt.message)); + }; + + req.ontimeout = function (evt) { + reject(new Error("XHR timed out while trying to load '" + path + "'")); + }; + + req.send(); +} |