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authorChristian Beier <dontmind@freeshell.org>2011-11-09 20:00:16 +0100
committerChristian Beier <dontmind@freeshell.org>2011-11-09 20:00:16 +0100
commitfaadd484489efddd182d6d0df43d8ecfdbff29ff (patch)
tree9c098fca3bd1280a2166259650695d172d049aee /webclients/novnc/include/util.js
parent7cb0e4a9a95886300268e1bff1e72b4c18f1b762 (diff)
downloadlibtdevnc-faadd484489efddd182d6d0df43d8ecfdbff29ff.tar.gz
libtdevnc-faadd484489efddd182d6d0df43d8ecfdbff29ff.zip
Rename 'classes' dir to 'webclients'.
Diffstat (limited to 'webclients/novnc/include/util.js')
-rw-r--r--webclients/novnc/include/util.js276
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diff --git a/webclients/novnc/include/util.js b/webclients/novnc/include/util.js
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+/*
+ * 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, 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 );
+};
+
+/*
+ * ------------------------------------------------------
+ * 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 === '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
+ */
+
+// 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 = {
+ 'presto': (function() {
+ return (!window.opera) ? false : ((arguments.callee.caller) ? 960 : ((document.getElementsByClassName) ? 950 : 925)); }()),
+ '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};
+}());