betajs-browser
Version:
BetaJS-Browser is a client-side JavaScript framework for Browser-specific methods.
117 lines (108 loc) • 4.42 kB
JavaScript
Scoped.define("module:Upload.MultiUploader", [
"module:Upload.FileUploader",
"base:Objs"
], function(FileUploader, Objs, scoped) {
return FileUploader.extend({
scoped: scoped
}, function(inherited) {
return {
constructor: function(options) {
inherited.constructor.call(this, options);
this._uploaders = {};
this._uploadLimit = this._options.uploadLimit || 5;
this._uploadingCount = 0;
this._end = !this._options.manualEnd;
},
end: function() {
this._end = true;
this._updateState();
},
addUploader: function(uploader) {
this._uploaders[uploader.cid()] = uploader;
uploader.on("state", this._updateState, this);
uploader.on("progress", this._updateProgress, this);
if (this.state() === "uploading") {
if (uploader.state() === "error")
uploader.reset();
if (uploader.state() === "idle" && this._uploadingCount < this._uploadLimit) {
this._uploadingCount++;
uploader.upload();
}
}
return this;
},
_upload: function() {
Objs.iter(this._uploaders, function(uploader) {
if (uploader.state() === "error")
uploader.reset();
if (uploader.state() === "idle" && this._uploadingCount < this._uploadLimit) {
this._uploadingCount++;
uploader.upload();
}
}, this);
this._updateState();
},
_updateState: function() {
if (this.state() !== "uploading")
return;
this._uploadingCount = 0;
var error = false;
var idleCount = 0;
Objs.iter(this._uploaders, function(uploader) {
switch (uploader.state()) {
case "uploading":
this._uploadingCount++;
break;
case "error":
error = true;
break;
case "idle":
idleCount++;
break;
}
}, this);
if (idleCount > 0 && this._uploadingCount < this._uploadLimit) {
Objs.iter(this._uploaders, function(uploader) {
if (this._uploadingCount < this._uploadLimit && uploader.state() === "idle") {
uploader.upload();
idleCount--;
this._uploadingCount++;
}
}, this);
}
if (this._uploadingCount > 0)
return;
if (!this._end)
return;
var datas = [];
Objs.iter(this._uploaders, function(uploader) {
var result = (error && uploader.state() === "error") || (!error && uploader.state() === "success") ? uploader.data() : undefined;
datas.push(result);
}, this);
if (error > 0)
this._errorCallback(datas);
else
this._successCallback(datas);
},
_updateProgress: function() {
if (this.state() !== "uploading")
return;
this._progressCallback(this.uploadedBytes(), this.totalBytes());
},
uploadedBytes: function() {
var uploaded = 0;
Objs.iter(this._uploaders, function(uploader) {
uploaded += uploader.uploadedBytes();
}, this);
return uploaded;
},
totalBytes: function() {
var total = 0;
Objs.iter(this._uploaders, function(uploader) {
total += uploader.totalBytes();
}, this);
return total;
}
};
});
});