define([
	"dojo/dom-construct",
	"dojo/_base/declare",
	"dojo/_base/lang",
	"dojo/_base/array",
	"dojo/io/iframe",
	"dojox/form/uploader/plugins/IFrame"
],function(domConstruct, declare, lang, array, ioIframe, dojoIFrame){
	return declare("pd/widgets/uploader/IFrame", [dojoIFrame], {
		handleAs: "",
		
		uploadIFrame: function(data){
			// Overwrite dojo original one
			var form, destroyAfter = false;
			if(!this.getForm()){
				form = domConstruct.place('<form enctype="multipart/form-data" ' +
						'method="post"></form>', this.domNode);
				array.forEach(this._inputs, function(n, i){
					if(n.value) form.appendChild(n);
				}, this);
				destroyAfter = true;
			}else{
				form = this.form;
			}
	
			var url = this.getUrl();
			var dfd = ioIframe.send({
				url: url,
				form: form,
				method: "POST",
				handleAs: this.handleAs,
				error: lang.hitch(this, function(err){
					if(destroyAfter){ domConstruct.destroy(form); }
					this.onError(err);
				}),
				load: lang.hitch(this, function(data, ioArgs, widgetRef){
					if(destroyAfter){ domConstruct.destroy(form); }
					if(data["ERROR"] || data["error"]){
						this.onError(data);
					}else{
						this.onComplete(data);
					}
				})
			});
		}
	});
});