function index_form_enter(event) {
	if (event.which || event.keyCode) {
		if ((event.which == 13) || (event.keyCode == 13)) {
			index_form_submit();
		}
	};
}

function index_form_submit() {
	window.location = window.location + "/list/" +
        document.getElementById("index_form_name").value;
}

function UploadFile(file,file_no,files_total) {
    if (uploadTurn != file_no) {
        // Wait for our turn to upload. check every 0.5s
        setTimeout(
            function() {
                UploadFile(file,file_no,files_total);
            },
            500
        );
        return
    }
    var file_counter = "(" + (file_no + 1) + "/" + files_total + ") ";
	var xhr = new XMLHttpRequest();
	if (xhr.upload) {

		var o = document.getElementById("progress");
		xhr.upload.addEventListener("progress", function(e) {
			var pc = parseInt((e.loaded / e.total * 100));
			o.className = "";
            o.innerHTML = "Uploading: " + file_counter + pc + "%";
            if (pc == 100) {
                o.innerHTML = "Finishing up " + file_counter + "wait ...";
            }
            // upload works, hide button
            document.getElementById("list_upload_button").hidden = true;
		}, false);

        // file received/failed
		xhr.onreadystatechange = function(e) {
			if (xhr.readyState == 4) {
				o.className = (xhr.status == 200 ? "success" : "failure");
                if (xhr.status == 200) {
                    if (file_no + 1 == files_total) {
                        location = location;
                    }
                } else {
                    o.innerHTML = xhr.response;
                }
                uploadTurn += 1;
			}
		};

        // start upload
		xhr.open("POST", document.getElementById("upload_form").action, true);
		xhr.setRequestHeader("X-FILENAME", file.name);
        var formData = new FormData();
        formData.append('name', document.getElementById("list_upload_name").value);
        formData.append('file', file);
        xhr.send(formData);

	}
}

// file selection
function FileSelectHandler(e) {

	// fetch FileList object
	var files = e.target.files || e.dataTransfer.files;
    uploadTurn = 0;
	// process all File objects
	for (var i = 0, f; f = files[i]; i++) {
        UploadFile(f,i,files.length);
	}
}
// Variable to stop parallel uploads
var uploadTurn = -1;