blob: 0c34a7fae6e731ad9d691647d7f2b80cd6f21afd (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
|
function Uploader(url, cb) {
this.ws = new WebSocket(url);
if (cb) this.ws.onopen = cb;
this.sendQueue = [];
this.sending = null;
this.sendCallback = null;
this.ondone = null;
var self = this;
this.ws.onmessage = function(event) {
var data = JSON.parse(event.data);
if (data.event == 'complete') {
if (data.path != self.sending.path) {
self.sendQueue = [];
self.sending = null;
self.sendCallback = null;
throw new Error('Got message for wrong file!');
}
self.sending = null;
var callback = self.sendCallback;
self.sendCallback = null;
if (callback) callback();
if (self.sendQueue.length === 0 && self.ondone) self.ondone(null);
if (self.sendQueue.length > 0) {
var args = self.sendQueue.pop();
setTimeout(function() { self.sendFile.apply(self, args); }, 0);
}
}
else if (data.event == 'error') {
self.sendQueue = [];
self.sending = null;
var callback = self.sendCallback;
self.sendCallback = null;
var error = new Error('Server reported send error for file ' + data.path);
if (callback) callback(error);
if (self.ondone) self.ondone(error);
}
}
}
Uploader.prototype.sendFile = function(file, cb) {
if (this.ws.readyState != WebSocket.OPEN) throw new Error('Not connected');
if (this.sending) {
this.sendQueue.push(arguments);
return;
}
var fileData = { name: file.name, path: file.webkitRelativePath };
this.sending = fileData;
this.sendCallback = cb;
this.ws.send(JSON.stringify(fileData));
this.ws.send(file);
}
Uploader.prototype.close = function() {
this.ws.close();
}
|
