function clear_text(id,defaultValue) {
    var element = document.getElementById(id);
    if ( element.value == defaultValue ) {
        element.value = '';
    }
}


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 infoToggle() {
    var info = document.getElementById("list_info");
    info.style.display = info.style.display === 'block' ? 'none' : 'block';
}


function scriptToggle() {
    var el = document.getElementById("list_script");
    if (el) {
      el.style.display = el.style.display === 'block' ? 'none' : 'block';
	}
}


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('from_gui', 'true');
        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;


function UploadURL() {
    var URL = document.getElementById("list_url_upload_text").value;
    var xhr = new XMLHttpRequest();
    if (xhr.upload) {
        var o = document.getElementById("progress");
        xhr.upload.addEventListener(
            "progress",
            function(e) {
                o.className = "";
                o.innerHTML = "Uploading...";
                console.log(e);
                // upload works, hide button
                document.getElementById("list_url_upload_button").setAttribute("disabled", "disabled");
            },
            false
        );

        // file received/failed
        xhr.onreadystatechange = function(e) {
            if (xhr.readyState == 4) {
                o.className = (xhr.status == 200 ? "success" : "failure");
                if (xhr.status == 200) {
                    // refresh page at upload finish
                    location = location;
                } else {
                    o.innerHTML = xhr.response;
                    document.getElementById("list_url_upload_button").removeAttribute("disabled");
                }
            }
        };

        // start upload
        xhr.open("POST", document.getElementById("url_upload_form").action, true);
        var formData = new FormData();
        formData.append('name', document.getElementById("list_upload_name").value);
        formData.append('from_gui', 'true');
        formData.append('url', URL);
        xhr.send(formData);

    }
}


function changeTitle(newTitle) {
    document.title = "Flees - " + newTitle;
}

function back() {
	window.history.back();
}

function keyboardEntry(ev){
  var kC=ev.keyCode;
  var k=String.fromCharCode(ev.keyCode);
  if ( document.activeElement === document.getElementById("list_url_upload_text")) {
    return
  }
  if (/T/.test(k)) {
	infoToggle();
  }
}

document.onkeyup = keyboardEntry;