mirror of
https://github.com/novnc/noVNC.git
synced 2026-06-04 11:29:40 +00:00
Import web-socket-js: a0fb3933ce5c824bcb882f5a1cf87e46de773ea8
web-socket-js is a flash based WebSockets emulator. From: http://github.com/gimite/web-socket-js
This commit is contained in:
Joel Martin
311
include/web-socket-js/web_socket.js
Executable file
311
include/web-socket-js/web_socket.js
Executable file
@@ -0,0 +1,311 @@
|
||||
// Copyright: Hiroshi Ichikawa <http://gimite.net/en/>
|
||||
// Lincense: New BSD Lincense
|
||||
// Reference: http://dev.w3.org/html5/websockets/
|
||||
// Reference: http://tools.ietf.org/html/draft-hixie-thewebsocketprotocol
|
||||
|
||||
(function() {
|
||||
|
||||
if (window.WebSocket) return;
|
||||
|
||||
var console = window.console;
|
||||
if (!console) console = {log: function(){ }, error: function(){ }};
|
||||
|
||||
function hasFlash() {
|
||||
if ('navigator' in window && 'plugins' in navigator && navigator.plugins['Shockwave Flash']) {
|
||||
return !!navigator.plugins['Shockwave Flash'].description;
|
||||
}
|
||||
if ('ActiveXObject' in window) {
|
||||
try {
|
||||
return !!new ActiveXObject('ShockwaveFlash.ShockwaveFlash').GetVariable('$version');
|
||||
} catch (e) {}
|
||||
}
|
||||
return false;
|
||||
}
|
||||
|
||||
if (!hasFlash()) {
|
||||
console.error("Flash Player is not installed.");
|
||||
return;
|
||||
}
|
||||
|
||||
WebSocket = function(url, protocol, proxyHost, proxyPort, headers) {
|
||||
var self = this;
|
||||
self.readyState = WebSocket.CONNECTING;
|
||||
self.bufferedAmount = 0;
|
||||
WebSocket.__addTask(function() {
|
||||
self.__flash =
|
||||
WebSocket.__flash.create(url, protocol, proxyHost || null, proxyPort || 0, headers || null);
|
||||
|
||||
self.__flash.addEventListener("open", function(fe) {
|
||||
try {
|
||||
if (self.onopen) self.onopen();
|
||||
} catch (e) {
|
||||
console.error(e.toString());
|
||||
}
|
||||
});
|
||||
|
||||
self.__flash.addEventListener("close", function(fe) {
|
||||
try {
|
||||
if (self.onclose) self.onclose();
|
||||
} catch (e) {
|
||||
console.error(e.toString());
|
||||
}
|
||||
});
|
||||
|
||||
self.__flash.addEventListener("message", function(fe) {
|
||||
var data = decodeURIComponent(fe.getData());
|
||||
try {
|
||||
if (self.onmessage) {
|
||||
var e;
|
||||
if (window.MessageEvent) {
|
||||
e = document.createEvent("MessageEvent");
|
||||
e.initMessageEvent("message", false, false, data, null, null, window);
|
||||
} else { // IE
|
||||
e = {data: data};
|
||||
}
|
||||
self.onmessage(e);
|
||||
}
|
||||
} catch (e) {
|
||||
console.error(e.toString());
|
||||
}
|
||||
});
|
||||
|
||||
self.__flash.addEventListener("stateChange", function(fe) {
|
||||
try {
|
||||
self.readyState = fe.getReadyState();
|
||||
self.bufferedAmount = fe.getBufferedAmount();
|
||||
} catch (e) {
|
||||
console.error(e.toString());
|
||||
}
|
||||
});
|
||||
|
||||
//console.log("[WebSocket] Flash object is ready");
|
||||
});
|
||||
}
|
||||
|
||||
WebSocket.prototype.send = function(data) {
|
||||
if (!this.__flash || this.readyState == WebSocket.CONNECTING) {
|
||||
throw "INVALID_STATE_ERR: Web Socket connection has not been established";
|
||||
}
|
||||
var result = this.__flash.send(data);
|
||||
if (result < 0) { // success
|
||||
return true;
|
||||
} else {
|
||||
this.bufferedAmount = result;
|
||||
return false;
|
||||
}
|
||||
};
|
||||
|
||||
WebSocket.prototype.close = function() {
|
||||
if (!this.__flash) return;
|
||||
if (this.readyState != WebSocket.OPEN) return;
|
||||
this.__flash.close();
|
||||
// Sets/calls them manually here because Flash WebSocketConnection.close cannot fire events
|
||||
// which causes weird error:
|
||||
// > You are trying to call recursively into the Flash Player which is not allowed.
|
||||
this.readyState = WebSocket.CLOSED;
|
||||
if (this.onclose) this.onclose();
|
||||
};
|
||||
|
||||
/**
|
||||
* Implementation of {@link <a href="http://www.w3.org/TR/DOM-Level-2-Events/events.html#Events-registration">DOM 2 EventTarget Interface</a>}
|
||||
*
|
||||
* @param {string} type
|
||||
* @param {function} listener
|
||||
* @param {boolean} useCapture !NB Not implemented yet
|
||||
* @return void
|
||||
*/
|
||||
WebSocket.prototype.addEventListener = function(type, listener, useCapture) {
|
||||
if (!('__events' in this)) {
|
||||
this.__events = {};
|
||||
}
|
||||
if (!(type in this.__events)) {
|
||||
this.__events[type] = [];
|
||||
if ('function' == typeof this['on' + type]) {
|
||||
this.__events[type].defaultHandler = this['on' + type];
|
||||
this['on' + type] = WebSocket_FireEvent(this, type);
|
||||
}
|
||||
}
|
||||
this.__events[type].push(listener);
|
||||
};
|
||||
|
||||
/**
|
||||
* Implementation of {@link <a href="http://www.w3.org/TR/DOM-Level-2-Events/events.html#Events-registration">DOM 2 EventTarget Interface</a>}
|
||||
*
|
||||
* @param {string} type
|
||||
* @param {function} listener
|
||||
* @param {boolean} useCapture NB! Not implemented yet
|
||||
* @return void
|
||||
*/
|
||||
WebSocket.prototype.removeEventListener = function(type, listener, useCapture) {
|
||||
if (!('__events' in this)) {
|
||||
this.__events = {};
|
||||
}
|
||||
if (!(type in this.__events)) return;
|
||||
for (var i = this.__events.length; i > -1; --i) {
|
||||
if (listener === this.__events[type][i]) {
|
||||
this.__events[type].splice(i, 1);
|
||||
break;
|
||||
}
|
||||
}
|
||||
};
|
||||
|
||||
/**
|
||||
* Implementation of {@link <a href="http://www.w3.org/TR/DOM-Level-2-Events/events.html#Events-registration">DOM 2 EventTarget Interface</a>}
|
||||
*
|
||||
* @param {WebSocketEvent} event
|
||||
* @return void
|
||||
*/
|
||||
WebSocket.prototype.dispatchEvent = function(event) {
|
||||
if (!('__events' in this)) throw 'UNSPECIFIED_EVENT_TYPE_ERR';
|
||||
if (!(event.type in this.__events)) throw 'UNSPECIFIED_EVENT_TYPE_ERR';
|
||||
|
||||
for (var i = 0, l = this.__events[event.type].length; i < l; ++ i) {
|
||||
this.__events[event.type][i](event);
|
||||
if (event.cancelBubble) break;
|
||||
}
|
||||
|
||||
if (false !== event.returnValue &&
|
||||
'function' == typeof this.__events[event.type].defaultHandler)
|
||||
{
|
||||
this.__events[event.type].defaultHandler(event);
|
||||
}
|
||||
};
|
||||
|
||||
/**
|
||||
*
|
||||
* @param {object} object
|
||||
* @param {string} type
|
||||
*/
|
||||
function WebSocket_FireEvent(object, type) {
|
||||
return function(data) {
|
||||
var event = new WebSocketEvent();
|
||||
event.initEvent(type, true, true);
|
||||
event.target = event.currentTarget = object;
|
||||
for (var key in data) {
|
||||
event[key] = data[key];
|
||||
}
|
||||
object.dispatchEvent(event, arguments);
|
||||
};
|
||||
}
|
||||
|
||||
/**
|
||||
* Basic implementation of {@link <a href="http://www.w3.org/TR/DOM-Level-2-Events/events.html#Events-interface">DOM 2 EventInterface</a>}
|
||||
*
|
||||
* @class
|
||||
* @constructor
|
||||
*/
|
||||
function WebSocketEvent(){}
|
||||
|
||||
/**
|
||||
*
|
||||
* @type boolean
|
||||
*/
|
||||
WebSocketEvent.prototype.cancelable = true;
|
||||
|
||||
/**
|
||||
*
|
||||
* @type boolean
|
||||
*/
|
||||
WebSocketEvent.prototype.cancelBubble = false;
|
||||
|
||||
/**
|
||||
*
|
||||
* @return void
|
||||
*/
|
||||
WebSocketEvent.prototype.preventDefault = function() {
|
||||
if (this.cancelable) {
|
||||
this.returnValue = false;
|
||||
}
|
||||
};
|
||||
|
||||
/**
|
||||
*
|
||||
* @return void
|
||||
*/
|
||||
WebSocketEvent.prototype.stopPropagation = function() {
|
||||
this.cancelBubble = true;
|
||||
};
|
||||
|
||||
/**
|
||||
*
|
||||
* @param {string} eventTypeArg
|
||||
* @param {boolean} canBubbleArg
|
||||
* @param {boolean} cancelableArg
|
||||
* @return void
|
||||
*/
|
||||
WebSocketEvent.prototype.initEvent = function(eventTypeArg, canBubbleArg, cancelableArg) {
|
||||
this.type = eventTypeArg;
|
||||
this.cancelable = cancelableArg;
|
||||
this.timeStamp = new Date();
|
||||
};
|
||||
|
||||
|
||||
WebSocket.CONNECTING = 0;
|
||||
WebSocket.OPEN = 1;
|
||||
WebSocket.CLOSED = 2;
|
||||
|
||||
WebSocket.__tasks = [];
|
||||
|
||||
WebSocket.__initialize = function() {
|
||||
if (!WebSocket.__swfLocation) {
|
||||
console.error("[WebSocket] set WebSocket.__swfLocation to location of WebSocketMain.swf");
|
||||
return;
|
||||
}
|
||||
var container = document.createElement("div");
|
||||
container.id = "webSocketContainer";
|
||||
// Puts the Flash out of the window. Note that we cannot use display: none or visibility: hidden
|
||||
// here because it prevents Flash from loading at least in IE.
|
||||
container.style.position = "absolute";
|
||||
container.style.left = "-100px";
|
||||
container.style.top = "-100px";
|
||||
var holder = document.createElement("div");
|
||||
holder.id = "webSocketFlash";
|
||||
container.appendChild(holder);
|
||||
document.body.appendChild(container);
|
||||
swfobject.embedSWF(
|
||||
WebSocket.__swfLocation, "webSocketFlash", "8", "8", "9.0.0",
|
||||
null, {bridgeName: "webSocket"}, null, null,
|
||||
function(e) {
|
||||
if (!e.success) console.error("[WebSocket] swfobject.embedSWF failed");
|
||||
}
|
||||
);
|
||||
FABridge.addInitializationCallback("webSocket", function() {
|
||||
try {
|
||||
//console.log("[WebSocket] FABridge initializad");
|
||||
WebSocket.__flash = FABridge.webSocket.root();
|
||||
WebSocket.__flash.setCallerUrl(location.href);
|
||||
for (var i = 0; i < WebSocket.__tasks.length; ++i) {
|
||||
WebSocket.__tasks[i]();
|
||||
}
|
||||
WebSocket.__tasks = [];
|
||||
} catch (e) {
|
||||
console.error("[WebSocket] " + e.toString());
|
||||
}
|
||||
});
|
||||
};
|
||||
|
||||
WebSocket.__addTask = function(task) {
|
||||
if (WebSocket.__flash) {
|
||||
task();
|
||||
} else {
|
||||
WebSocket.__tasks.push(task);
|
||||
}
|
||||
}
|
||||
|
||||
// called from Flash
|
||||
function webSocketLog(message) {
|
||||
console.log(decodeURIComponent(message));
|
||||
}
|
||||
|
||||
// called from Flash
|
||||
function webSocketError(message) {
|
||||
console.error(decodeURIComponent(message));
|
||||
}
|
||||
|
||||
if (window.addEventListener) {
|
||||
window.addEventListener("load", WebSocket.__initialize, false);
|
||||
} else {
|
||||
window.attachEvent("onload", WebSocket.__initialize);
|
||||
}
|
||||
|
||||
})();
|
||||
Reference in New Issue
Block a user