380 lines
12 KiB
JavaScript
380 lines
12 KiB
JavaScript
/*
|
|
* from noVNC: HTML5 VNC client
|
|
* Copyright (C) 2012 Joel Martin
|
|
* Licensed under MPL 2.0 (see LICENSE.txt)
|
|
*
|
|
* See README.md for usage and integration instructions.
|
|
*/
|
|
|
|
"use strict";
|
|
/*jslint bitwise: false, white: false */
|
|
/*global window, console, document, navigator, ActiveXObject */
|
|
|
|
// Globals defined here
|
|
var Util = {};
|
|
|
|
|
|
/*
|
|
* Make arrays quack
|
|
*/
|
|
|
|
Array.prototype.push8 = function (num) {
|
|
this.push(num & 0xFF);
|
|
};
|
|
|
|
Array.prototype.push16 = function (num) {
|
|
this.push((num >> 8) & 0xFF,
|
|
(num ) & 0xFF );
|
|
};
|
|
Array.prototype.push32 = function (num) {
|
|
this.push((num >> 24) & 0xFF,
|
|
(num >> 16) & 0xFF,
|
|
(num >> 8) & 0xFF,
|
|
(num ) & 0xFF );
|
|
};
|
|
|
|
// IE does not support map (even in IE9)
|
|
//This prototype is provided by the Mozilla foundation and
|
|
//is distributed under the MIT license.
|
|
//http://www.ibiblio.org/pub/Linux/LICENSES/mit.license
|
|
if (!Array.prototype.map)
|
|
{
|
|
Array.prototype.map = function(fun /*, thisp*/)
|
|
{
|
|
var len = this.length;
|
|
if (typeof fun != "function")
|
|
throw new TypeError();
|
|
|
|
var res = new Array(len);
|
|
var thisp = arguments[1];
|
|
for (var i = 0; i < len; i++)
|
|
{
|
|
if (i in this)
|
|
res[i] = fun.call(thisp, this[i], i, this);
|
|
}
|
|
|
|
return res;
|
|
};
|
|
}
|
|
|
|
//
|
|
// requestAnimationFrame shim with setTimeout fallback
|
|
//
|
|
|
|
window.requestAnimFrame = (function(){
|
|
return window.requestAnimationFrame ||
|
|
window.webkitRequestAnimationFrame ||
|
|
window.mozRequestAnimationFrame ||
|
|
window.oRequestAnimationFrame ||
|
|
window.msRequestAnimationFrame ||
|
|
function(callback){
|
|
window.setTimeout(callback, 1000 / 60);
|
|
};
|
|
})();
|
|
|
|
/*
|
|
* ------------------------------------------------------
|
|
* Namespaced in Util
|
|
* ------------------------------------------------------
|
|
*/
|
|
|
|
/*
|
|
* Logging/debug routines
|
|
*/
|
|
|
|
Util._log_level = 'warn';
|
|
Util.init_logging = function (level) {
|
|
if (typeof level === 'undefined') {
|
|
level = Util._log_level;
|
|
} else {
|
|
Util._log_level = level;
|
|
}
|
|
if (typeof window.console === "undefined") {
|
|
if (typeof window.opera !== "undefined") {
|
|
window.console = {
|
|
'log' : window.opera.postError,
|
|
'warn' : window.opera.postError,
|
|
'error': window.opera.postError };
|
|
} else {
|
|
window.console = {
|
|
'log' : function(m) {},
|
|
'warn' : function(m) {},
|
|
'error': function(m) {}};
|
|
}
|
|
}
|
|
|
|
Util.Debug = Util.Info = Util.Warn = Util.Error = function (msg) {};
|
|
switch (level) {
|
|
case 'debug': Util.Debug = function (msg) { console.log(msg); };
|
|
case 'info': Util.Info = function (msg) { console.log(msg); };
|
|
case 'warn': Util.Warn = function (msg) { console.warn(msg); };
|
|
case 'error': Util.Error = function (msg) { console.error(msg); };
|
|
case 'none':
|
|
break;
|
|
default:
|
|
throw("invalid logging type '" + level + "'");
|
|
}
|
|
};
|
|
Util.get_logging = function () {
|
|
return Util._log_level;
|
|
};
|
|
// Initialize logging level
|
|
Util.init_logging();
|
|
|
|
|
|
// Set configuration default for Crockford style function namespaces
|
|
Util.conf_default = function(cfg, api, defaults, v, mode, type, defval, desc) {
|
|
var getter, setter;
|
|
|
|
// Default getter function
|
|
getter = function (idx) {
|
|
if ((type in {'arr':1, 'array':1}) &&
|
|
(typeof idx !== 'undefined')) {
|
|
return cfg[v][idx];
|
|
} else {
|
|
return cfg[v];
|
|
}
|
|
};
|
|
|
|
// Default setter function
|
|
setter = function (val, idx) {
|
|
if (type in {'boolean':1, 'bool':1}) {
|
|
if ((!val) || (val in {'0':1, 'no':1, 'false':1})) {
|
|
val = false;
|
|
} else {
|
|
val = true;
|
|
}
|
|
} else if (type in {'integer':1, 'int':1}) {
|
|
val = parseInt(val, 10);
|
|
} else if (type === 'str') {
|
|
val = String(val);
|
|
} else if (type === 'func') {
|
|
if (!val) {
|
|
val = function () {};
|
|
}
|
|
}
|
|
if (typeof idx !== 'undefined') {
|
|
cfg[v][idx] = val;
|
|
} else {
|
|
cfg[v] = val;
|
|
}
|
|
};
|
|
|
|
// Set the description
|
|
api[v + '_description'] = desc;
|
|
|
|
// Set the getter function
|
|
if (typeof api['get_' + v] === 'undefined') {
|
|
api['get_' + v] = getter;
|
|
}
|
|
|
|
// Set the setter function with extra sanity checks
|
|
if (typeof api['set_' + v] === 'undefined') {
|
|
api['set_' + v] = function (val, idx) {
|
|
if (mode in {'RO':1, 'ro':1}) {
|
|
throw(v + " is read-only");
|
|
} else if ((mode in {'WO':1, 'wo':1}) &&
|
|
(typeof cfg[v] !== 'undefined')) {
|
|
throw(v + " can only be set once");
|
|
}
|
|
setter(val, idx);
|
|
};
|
|
}
|
|
|
|
// Set the default value
|
|
if (typeof defaults[v] !== 'undefined') {
|
|
defval = defaults[v];
|
|
} else if ((type in {'arr':1, 'array':1}) &&
|
|
(! (defval instanceof Array))) {
|
|
defval = [];
|
|
}
|
|
// Coerce existing setting to the right type
|
|
//Util.Debug("v: " + v + ", defval: " + defval + ", defaults[v]: " + defaults[v]);
|
|
setter(defval);
|
|
};
|
|
|
|
// Set group of configuration defaults
|
|
Util.conf_defaults = function(cfg, api, defaults, arr) {
|
|
var i;
|
|
for (i = 0; i < arr.length; i++) {
|
|
Util.conf_default(cfg, api, defaults, arr[i][0], arr[i][1],
|
|
arr[i][2], arr[i][3], arr[i][4]);
|
|
}
|
|
};
|
|
|
|
|
|
/*
|
|
* Cross-browser routines
|
|
*/
|
|
|
|
|
|
// Dynamically load scripts without using document.write()
|
|
// Reference: http://unixpapa.com/js/dyna.html
|
|
//
|
|
// Handles the case where load_scripts is invoked from a script that
|
|
// itself is loaded via load_scripts. Once all scripts are loaded the
|
|
// window.onscriptsloaded handler is called (if set).
|
|
Util.get_include_uri = function() {
|
|
return (typeof INCLUDE_URI !== "undefined") ? INCLUDE_URI : "include/";
|
|
}
|
|
Util._loading_scripts = [];
|
|
Util._pending_scripts = [];
|
|
Util.load_scripts = function(files) {
|
|
var head = document.getElementsByTagName('head')[0], script,
|
|
ls = Util._loading_scripts, ps = Util._pending_scripts;
|
|
for (var f=0; f<files.length; f++) {
|
|
script = document.createElement('script');
|
|
script.type = 'text/javascript';
|
|
script.src = Util.get_include_uri() + files[f];
|
|
//console.log("loading script: " + script.src);
|
|
script.onload = script.onreadystatechange = function (e) {
|
|
while (ls.length > 0 && (ls[0].readyState === 'loaded' ||
|
|
ls[0].readyState === 'complete')) {
|
|
// For IE, append the script to trigger execution
|
|
var s = ls.shift();
|
|
//console.log("loaded script: " + s.src);
|
|
head.appendChild(s);
|
|
}
|
|
if (!this.readyState ||
|
|
(Util.Engine.presto && this.readyState === 'loaded') ||
|
|
this.readyState === 'complete') {
|
|
if (ps.indexOf(this) >= 0) {
|
|
this.onload = this.onreadystatechange = null;
|
|
//console.log("completed script: " + this.src);
|
|
ps.splice(ps.indexOf(this), 1);
|
|
|
|
// Call window.onscriptsload after last script loads
|
|
if (ps.length === 0 && window.onscriptsload) {
|
|
window.onscriptsload();
|
|
}
|
|
}
|
|
}
|
|
};
|
|
// In-order script execution tricks
|
|
if (Util.Engine.trident) {
|
|
// For IE wait until readyState is 'loaded' before
|
|
// appending it which will trigger execution
|
|
// http://wiki.whatwg.org/wiki/Dynamic_Script_Execution_Order
|
|
ls.push(script);
|
|
} else {
|
|
// For webkit and firefox set async=false and append now
|
|
// https://developer.mozilla.org/en-US/docs/HTML/Element/script
|
|
script.async = false;
|
|
head.appendChild(script);
|
|
}
|
|
ps.push(script);
|
|
}
|
|
}
|
|
|
|
// Get DOM element position on page
|
|
Util.getPosition = function (obj) {
|
|
var x = 0, y = 0;
|
|
if (obj.offsetParent) {
|
|
do {
|
|
x += obj.offsetLeft;
|
|
y += obj.offsetTop;
|
|
obj = obj.offsetParent;
|
|
} while (obj);
|
|
}
|
|
return {'x': x, 'y': y};
|
|
};
|
|
|
|
// Get mouse event position in DOM element
|
|
Util.getEventPosition = function (e, obj, scale) {
|
|
var evt, docX, docY, pos;
|
|
//if (!e) evt = window.event;
|
|
evt = (e ? e : window.event);
|
|
evt = (evt.changedTouches ? evt.changedTouches[0] : evt.touches ? evt.touches[0] : evt);
|
|
if (evt.pageX || evt.pageY) {
|
|
docX = evt.pageX;
|
|
docY = evt.pageY;
|
|
} else if (evt.clientX || evt.clientY) {
|
|
docX = evt.clientX + document.body.scrollLeft +
|
|
document.documentElement.scrollLeft;
|
|
docY = evt.clientY + document.body.scrollTop +
|
|
document.documentElement.scrollTop;
|
|
}
|
|
pos = Util.getPosition(obj);
|
|
if (typeof scale === "undefined") {
|
|
scale = 1;
|
|
}
|
|
return {'x': (docX - pos.x) / scale, 'y': (docY - pos.y) / scale};
|
|
};
|
|
|
|
|
|
// Event registration. Based on: http://www.scottandrew.com/weblog/articles/cbs-events
|
|
Util.addEvent = function (obj, evType, fn){
|
|
if (obj.attachEvent){
|
|
var r = obj.attachEvent("on"+evType, fn);
|
|
return r;
|
|
} else if (obj.addEventListener){
|
|
obj.addEventListener(evType, fn, false);
|
|
return true;
|
|
} else {
|
|
throw("Handler could not be attached");
|
|
}
|
|
};
|
|
|
|
Util.removeEvent = function(obj, evType, fn){
|
|
if (obj.detachEvent){
|
|
var r = obj.detachEvent("on"+evType, fn);
|
|
return r;
|
|
} else if (obj.removeEventListener){
|
|
obj.removeEventListener(evType, fn, false);
|
|
return true;
|
|
} else {
|
|
throw("Handler could not be removed");
|
|
}
|
|
};
|
|
|
|
Util.stopEvent = function(e) {
|
|
if (e.stopPropagation) { e.stopPropagation(); }
|
|
else { e.cancelBubble = true; }
|
|
|
|
if (e.preventDefault) { e.preventDefault(); }
|
|
else { e.returnValue = false; }
|
|
};
|
|
|
|
|
|
// Set browser engine versions. Based on mootools.
|
|
Util.Features = {xpath: !!(document.evaluate), air: !!(window.runtime), query: !!(document.querySelector)};
|
|
|
|
Util.Engine = {
|
|
// Version detection break in Opera 11.60 (errors on arguments.callee.caller reference)
|
|
//'presto': (function() {
|
|
// return (!window.opera) ? false : ((arguments.callee.caller) ? 960 : ((document.getElementsByClassName) ? 950 : 925)); }()),
|
|
'presto': (function() { return (!window.opera) ? false : true; }()),
|
|
|
|
'trident': (function() {
|
|
return (!window.ActiveXObject) ? false : ((window.XMLHttpRequest) ? ((document.querySelectorAll) ? 6 : 5) : 4); }()),
|
|
'webkit': (function() {
|
|
try { return (navigator.taintEnabled) ? false : ((Util.Features.xpath) ? ((Util.Features.query) ? 525 : 420) : 419); } catch (e) { return false; } }()),
|
|
//'webkit': (function() {
|
|
// return ((typeof navigator.taintEnabled !== "unknown") && navigator.taintEnabled) ? false : ((Util.Features.xpath) ? ((Util.Features.query) ? 525 : 420) : 419); }()),
|
|
'gecko': (function() {
|
|
return (!document.getBoxObjectFor && window.mozInnerScreenX == null) ? false : ((document.getElementsByClassName) ? 19 : 18); }())
|
|
};
|
|
if (Util.Engine.webkit) {
|
|
// Extract actual webkit version if available
|
|
Util.Engine.webkit = (function(v) {
|
|
var re = new RegExp('WebKit/([0-9\.]*) ');
|
|
v = (navigator.userAgent.match(re) || ['', v])[1];
|
|
return parseFloat(v, 10);
|
|
})(Util.Engine.webkit);
|
|
}
|
|
|
|
Util.Flash = (function(){
|
|
var v, version;
|
|
try {
|
|
v = navigator.plugins['Shockwave Flash'].description;
|
|
} catch(err1) {
|
|
try {
|
|
v = new ActiveXObject('ShockwaveFlash.ShockwaveFlash').GetVariable('$version');
|
|
} catch(err2) {
|
|
v = '0 r0';
|
|
}
|
|
}
|
|
version = v.match(/\d+/g);
|
|
return {version: parseInt(version[0] || 0 + '.' + version[1], 10) || 0, build: parseInt(version[2], 10) || 0};
|
|
}());
|