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/*
* 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.
*/
/*jslint bitwise: false, white: false, browser: true, devel: true */
/*global Util, window, document */
// Globals defined here
var WebUtil = {}, $D;
/*
* Simple DOM selector by ID
*/
if (!window.$D) {
window.$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 (level) {
"use strict";
if (typeof level !== "undefined") {
Util._log_level = level;
} else {
var param = document.location.href.match(/logging=([A-Za-z0-9\._\-]*)/);
Util._log_level = (param || ['', Util._log_level])[1];
}
Util.init_logging();
};
WebUtil.dirObj = function (obj, depth, parent) {
"use strict";
if (! depth) { depth = 2; }
if (! parent) { parent = ""; }
// Print the properties of the passed-in object
var msg = "";
for (var 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", " ");
var val = "";
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) {
"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;
}
};
/*
* 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) {
"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;
};
WebUtil.readCookie = function (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;
};
WebUtil.eraseCookie = function (name) {
"use strict";
WebUtil.createCookie(name, "", -1);
};
/*
* Setting handling.
*/
WebUtil.initSettings = function (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) {
WebUtil.settings = cfg;
console.log(WebUtil.settings);
if (callback) {
callback.apply(this, callbackArgs);
}
});
} else {
// No-op
if (callback) {
callback.apply(this, callbackArgs);
}
}
};
// No days means only for this browser session
WebUtil.writeSetting = function (name, value) {
"use strict";
if (window.chrome && window.chrome.storage) {
//console.log("writeSetting:", name, value);
if (WebUtil.settings[name] !== value) {
WebUtil.settings[name] = value;
window.chrome.storage.sync.set(WebUtil.settings);
}
} else {
localStorage.setItem(name, value);
}
};
WebUtil.readSetting = function (name, defaultValue) {
"use strict";
var value;
if (window.chrome && window.chrome.storage) {
value = WebUtil.settings[name];
} else {
value = localStorage.getItem(name);
}
if (typeof value === "undefined") {
value = null;
}
if (value === null && typeof defaultValue !== undefined) {
return defaultValue;
} else {
return value;
}
};
WebUtil.eraseSetting = function (name) {
"use strict";
if (window.chrome && window.chrome.storage) {
window.chrome.storage.sync.remove(name);
delete WebUtil.settings[name];
} else {
localStorage.removeItem(name);
}
};
/*
* Alternate stylesheet selection
*/
WebUtil.getStylesheets = function () {
"use strict";
var links = document.getElementsByTagName("link");
var sheets = [];
for (var 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) {
"use strict";
if (typeof sheet === 'undefined') {
sheet = 'default';
}
var sheets = WebUtil.getStylesheets();
for (var i = 0; i < sheets.length; i += 1) {
var 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;
};
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