function getTrCount () {
i = 0;
while (document.getElementById('left_navi_tr_' + i) != null) {
i++;
}
return i - 1;
}
function deleteRow (row_number) {
// first step: determine the absolute number of table rows
var tr_count = getTrCount();
// second step: iterate through all rows in the interval [row_number, tr_count] and shift the content up
for (i = row_number; i < tr_count; i++) {
new_index = parseInt(i) + 1;
document.getElementById('mode_' + i).value = document.getElementById('mode_' + new_index).value
document.getElementById('p1_' + i + '_data').selectedIndex = document.getElementById('p1_' + new_index + '_data').selectedIndex;
document.getElementById('p1_' + i + '_descr').innerHTML = document.getElementById('p1_' + new_index + '_descr').innerHTML;
document.getElementById('p1_' + i + '_tr').style.display = document.getElementById('p1_' + new_index + '_tr').style.display;
document.getElementById('p2_' + i + '_data').value = document.getElementById('p2_' + new_index + '_data').value;
document.getElementById('p2_' + i + '_descr').innerHTML = document.getElementById('p2_' + new_index + '_descr').innerHTML;
document.getElementById('p2_' + i + '_tr').style.display = document.getElementById('p2_' + new_index + '_tr').style.display;
document.getElementById('p3_' + i + '_data').value = document.getElementById('p3_' + new_index + '_data').value;
document.getElementById('p3_' + i + '_descr').innerHTML = document.getElementById('p3_' + new_index + '_descr').innerHTML;
document.getElementById('p3_' + i + '_tr').style.display = document.getElementById('p3_' + new_index + '_tr').style.display;
}
// third step: remove the last row (which is now identical to the second last row, if it exists)
document.getElementById('left_navi_tr_' + tr_count).parentNode.removeChild(document.getElementById('left_navi_tr_' + tr_count));
// fourth step: if there are no other rows left, display the insert(0) button
if (tr_count <= 1) {
document.getElementById('left_navi_tr_0').style.display = 'block';
}
}
function moveUpRow (row_number) {
// first step: determine the absolute number of table rows
// (remember to subtract one because that is the table's first two rows, i.e. the header with the cell descriptions and the auxiliary button)
// var tr_count = document.getElementById('nav_table').rows.length - 2;
var tr_count = getTrCount();
// second step: is it possible to move up? I.e. are there more than one table rows && is the current row not the first row
// then simply switch the values of the current row and the row before
if ((tr_count > 1) && (row_number > 1)) {
above_index = parseInt(row_number) - 1;
tmp = document.getElementById('mode_' + above_index).selectedIndex;
document.getElementById('mode_' + above_index).selectedIndex = document.getElementById('mode_' + row_number).selectedIndex;
document.getElementById('mode_' + row_number).selectedIndex = tmp;
tmp = document.getElementById('mode_' + above_index).style.display;
document.getElementById('mode_' + above_index).style.display = document.getElementById('mode_' + row_number).style.display;
document.getElementById('mode_' + row_number).style.display = tmp;
tmp = document.getElementById('p1_' + above_index + '_data').selectedIndex;
document.getElementById('p1_' + above_index + '_data').selectedIndex = document.getElementById('p1_' + row_number + '_data').selectedIndex;
document.getElementById('p1_' + row_number + '_data').selectedIndex = tmp;
tmp = document.getElementById('p1_' + above_index + '_descr').innerHTML;
document.getElementById('p1_' + above_index + '_descr').innerHTML = document.getElementById('p1_' + row_number + '_descr').innerHTML;
document.getElementById('p1_' + row_number + '_descr').innerHTML = tmp;
tmp = document.getElementById('p1_' + above_index + '_tr').style.display;
document.getElementById('p1_' + above_index + '_tr').style.display = document.getElementById('p1_' + row_number + '_tr').style.display;
document.getElementById('p1_' + row_number + '_tr').style.display = tmp;
tmp = document.getElementById('p2_' + above_index + '_data').value;
document.getElementById('p2_' + above_index + '_data').value = document.getElementById('p2_' + row_number + '_data').value;
document.getElementById('p2_' + row_number + '_data').value = tmp;
tmp = document.getElementById('p2_' + above_index + '_descr').innerHTML;
document.getElementById('p2_' + above_index + '_descr').innerHTML = document.getElementById('p2_' + row_number + '_descr').innerHTML;
document.getElementById('p2_' + row_number + '_descr').innerHTML = tmp;
tmp = document.getElementById('p2_' + above_index + '_tr').style.display;
document.getElementById('p2_' + above_index + '_tr').style.display = document.getElementById('p2_' + row_number + '_tr').style.display;
document.getElementById('p2_' + row_number + '_tr').style.display = tmp;
tmp = document.getElementById('p3_' + above_index + '_data').value;
document.getElementById('p3_' + above_index + '_data').value = document.getElementById('p3_' + row_number + '_data').value;
document.getElementById('p3_' + row_number + '_data').value = tmp;
tmp = document.getElementById('p3_' + above_index + '_descr').innerHTML;
document.getElementById('p3_' + above_index + '_descr').innerHTML = document.getElementById('p3_' + row_number + '_descr').innerHTML;
document.getElementById('p3_' + row_number + '_descr').innerHTML = tmp;
tmp = document.getElementById('p3_' + above_index + '_tr').style.display;
document.getElementById('p3_' + above_index + '_tr').style.display = document.getElementById('p3_' + row_number + '_tr').style.display;
document.getElementById('p3_' + row_number + '_tr').style.display = tmp;
}
}
// this function will insert a row after the current row
function insertRow (row_number) {
// first step: determine the absolute number of table rows
// (remember to subtract one because that is the table's first two rows, i.e. the header with the cell descriptions and the auxiliary button)
var tr_count = getTrCount();
// second step: have the auxiliary button disappear
document.getElementById('left_navi_tr_0').style.display = 'none';
// third step: create the new table row and its table cells,
var left_navi_table_tr = document.createElement("tr");
var left_navi_mode = document.createElement("td"); left_navi_table_tr.appendChild(left_navi_mode);
var left_navi_content = document.createElement("td"); left_navi_table_tr.appendChild(left_navi_content);
var left_navi_delete = document.createElement("td"); left_navi_table_tr.appendChild(left_navi_delete);
var left_navi_move_up = document.createElement("td"); left_navi_table_tr.appendChild(left_navi_move_up);
var left_navi_insert = document.createElement("td"); left_navi_table_tr.appendChild(left_navi_insert);
// fill the cells,
new_id = tr_count + 1;
left_navi_mode.innerHTML = '';
left_navi_content.innerHTML = '
page:
text:
third parameter:
';
left_navi_delete.innerHTML = '';
left_navi_move_up.innerHTML = '';
left_navi_insert.innerHTML = '';
left_navi_table_tr.setAttribute('id', 'left_navi_tr_' + new_id);
// and add it to the main table
document.getElementById('nav_table').appendChild(left_navi_table_tr);
// fourth step: shift all entries down so that the row after row row_number is empty; only do that for non-vanishing rows
if (row_number > 0) {
for (i = tr_count + 1; i >= parseInt(row_number) + 1; i--) {
var above_index = parseInt(i) - 1;
document.getElementById('mode_' + i).selectedIndex = document.getElementById('mode_' + above_index).selectedIndex;
document.getElementById('p1_' + i + '_data').selectedIndex = document.getElementById('p1_' + above_index + '_data').selectedIndex;
document.getElementById('p1_' + i + '_descr').innerHTML = document.getElementById('p1_' + above_index + '_descr').innerHTML;
document.getElementById('p1_' + i + '_tr').style.display = document.getElementById('p1_' + above_index + '_tr').style.display;
document.getElementById('p2_' + i + '_data').value = document.getElementById('p2_' + above_index + '_data').value;
document.getElementById('p2_' + i + '_descr').innerHTML = document.getElementById('p2_' + above_index + '_descr').innerHTML;
document.getElementById('p2_' + i + '_tr').style.display = document.getElementById('p2_' + above_index + '_tr').style.display;
document.getElementById('p3_' + i + '_data').value = document.getElementById('p3_' + above_index + '_data').value;
document.getElementById('p3_' + i + '_descr').innerHTML = document.getElementById('p3_' + above_index + '_descr').innerHTML;
document.getElementById('p3_' + i + '_tr').style.display = document.getElementById('p3_' + above_index + '_tr').style.display;
}
}
var new_index = parseInt(row_number) + 1;
document.getElementById('mode_' + new_index).selectedIndex = 1;
document.getElementById('p1_' + new_index + '_data').selectedIndex = 0;
adaptIDList(new_index);
}
function adaptNavTable (select_id, nav_table_id) {
// broad layout (i.e. no left navigation)
if (document.getElementById(select_id).selectedIndex == 0) {
document.getElementById(nav_table_id).style.display = "none";
} else {
document.getElementById(nav_table_id).style.display = "table";
}
}
function adaptIDListForNavi (nav_template_id, id_list_id, configuration_table_id, configuration_notification_id) {
// "no": specify data for left navigation manually
if (document.getElementById(nav_template_id).selectedIndex == 0) {
document.getElementById(id_list_id).disabled = true;
document.getElementById(configuration_table_id).style.display = "table";
document.getElementById(configuration_notification_id).style.display = "none";
createPreview();
// "yes": use existing left hand navigation data
} else if (document.getElementById(nav_template_id).selectedIndex == 1) {
document.getElementById(id_list_id).disabled = false;
document.getElementById(configuration_table_id).style.display = "none";
document.getElementById(configuration_notification_id).style.display = "table";
document.getElementById(configuration_notification_id).innerHTML = "No manual configuration necessary; data will be imported from the site selected above.";
document.getElementById(configuration_notification_id).style.textAlign = "center";
document.getElementById("preview_td").innerHTML = "";
}
}
function adaptIDListForNavi_edit (nav_template_id, id_list_id, configuration_table_id, configuration_notification_id, change_only_locally_tr_id) {
// "no": specify data for left navigation manually
if (document.getElementById(nav_template_id).selectedIndex == 0) {
document.getElementById(id_list_id).disabled = true;
document.getElementById(configuration_table_id).style.display = "table";
document.getElementById(configuration_notification_id).style.display = "none";
document.getElementById(change_only_locally_tr_id).style.display = "table-row";
createPreview();
// "yes": use existing left hand navigation data
} else if (document.getElementById(nav_template_id).selectedIndex == 1) {
document.getElementById(id_list_id).disabled = false;
document.getElementById(configuration_table_id).style.display = "none";
document.getElementById(configuration_notification_id).style.display = "table";
document.getElementById(configuration_notification_id).innerHTML = "No manual configuration necessary; data will be imported from the site selected above.";
document.getElementById(configuration_notification_id).style.textAlign = "center";
document.getElementById(change_only_locally_tr_id).style.display = "none";
document.getElementById("preview_td").innerHTML = "";
}
}
function adaptIDList (id_number) {
// remember: id_number is a number, not the whole id
// headline
if (document.getElementById("mode_" + id_number).selectedIndex == 0) {
document.getElementById("p1_" + id_number + "_tr").style.display = "none";
document.getElementById("p2_" + id_number + "_tr").style.display = "table-row";
document.getElementById("p2_" + id_number + "_descr").innerHTML = "text:";
document.getElementById("p2_" + id_number + "_data").value = "";
document.getElementById("p3_" + id_number + "_tr").style.display = "none";
// internal link
} else if (document.getElementById("mode_" + id_number).selectedIndex == 1) {
document.getElementById("p1_" + id_number + "_tr").style.display = "table-row";
document.getElementById("p1_" + id_number + "_descr").innerHTML = "page:";
document.getElementById("p2_" + id_number + "_tr").style.display = "table-row";
document.getElementById("p2_" + id_number + "_descr").innerHTML = "text:";
document.getElementById("p2_" + id_number + "_data").value = "";
document.getElementById("p3_" + id_number + "_tr").style.display = "none";
// external link
} else if (document.getElementById("mode_" + id_number).selectedIndex == 2) {
document.getElementById("p1_" + id_number + "_tr").style.display = "none";
document.getElementById("p2_" + id_number + "_tr").style.display = "table-row";
document.getElementById("p2_" + id_number + "_descr").innerHTML = "URL:";
document.getElementById("p2_" + id_number + "_data").value = "";
document.getElementById("p3_" + id_number + "_tr").style.display = "table-row";
document.getElementById("p3_" + id_number + "_descr").innerHTML = "text:";
document.getElementById("p3_" + id_number + "_data").value = "";
// image
} else if (document.getElementById("mode_" + id_number).selectedIndex == 3) {
document.getElementById("p1_" + id_number + "_tr").style.display = "none";
document.getElementById("p2_" + id_number + "_tr").style.display = "table-row";
document.getElementById("p2_" + id_number + "_descr").innerHTML = "URL:";
document.getElementById("p2_" + id_number + "_data").value = "";
document.getElementById("p3_" + id_number + "_tr").style.display = "none";
// separator
} else if (document.getElementById("mode_" + id_number).selectedIndex == 4) {
document.getElementById("p1_" + id_number + "_tr").style.display = "none";
document.getElementById("p2_" + id_number + "_tr").style.display = "table-row";
document.getElementById("p2_" + id_number + "_descr").innerHTML = "color:";
document.getElementById("p2_" + id_number + "_data").value = "#4379a5";
document.getElementById("p3_" + id_number + "_tr").style.display = "none";
// line
} else if (document.getElementById("mode_" + id_number).selectedIndex == 5) {
document.getElementById("p1_" + id_number + "_tr").style.display = "none";
document.getElementById("p2_" + id_number + "_tr").style.display = "table-row";
document.getElementById("p2_" + id_number + "_descr").innerHTML = "color:";
document.getElementById("p2_" + id_number + "_data").value = "#cccccc";
document.getElementById("p3_" + id_number + "_tr").style.display = "none";
// vertical space
} else if (document.getElementById("mode_" + id_number).selectedIndex == 6) {
document.getElementById("p1_" + id_number + "_tr").style.display = "none";
document.getElementById("p2_" + id_number + "_tr").style.display = "table-row";
document.getElementById("p2_" + id_number + "_descr").innerHTML = "height:";
document.getElementById("p2_" + id_number + "_data").value = "1em";
document.getElementById("p3_" + id_number + "_tr").style.display = "none";
// direct HTML
} else if (document.getElementById("mode_" + id_number).selectedIndex == 7) {
document.getElementById("p1_" + id_number + "_tr").style.display = "none";
document.getElementById("p2_" + id_number + "_tr").style.display = "table-row";
document.getElementById("p2_" + id_number + "_descr").innerHTML = "HTML:";
document.getElementById("p2_" + id_number + "_data").value = "";
document.getElementById("p3_" + id_number + "_tr").style.display = "none";
// direct PHP
} else if (document.getElementById("mode_" + id_number).selectedIndex == 8) {
document.getElementById("p1_" + id_number + "_tr").style.display = "none";
document.getElementById("p2_" + id_number + "_tr").style.display = "table-row";
document.getElementById("p2_" + id_number + "_descr").innerHTML = "PHP:";
document.getElementById("p2_" + id_number + "_data").value = "";
document.getElementById("p3_" + id_number + "_tr").style.display = "none";
}
}
function createPreviewIfPossible (mode_id) {
if (document.getElementById(mode_id).selectedIndex == 0) {
createPreview();
} else {
alert("No preview possible; please visit the respective page to see the navigation.");
}
}
function createPreview () {
var table_id = 'nav_table';
var preview_td_id = 'preview_td';
// the HTML output
var HTML = '
';
// determine the absolute number of table rows
// (remember to subtract one because that is the table's first two rows, i.e. the header with the cell descriptions and the auxiliary button)
var tr_count = getTrCount();
// loop over all configuration entries
for (i = 1; i <= tr_count; i++) {
// headline
if (document.getElementById('mode_' + i).selectedIndex == 0) {
HTML += '
' + document.getElementById('p2_' + i + '_data').value + '
';
// internal link
} else if (document.getElementById('mode_' + i).selectedIndex == 1) {
HTML += '
' + document.getElementById('p2_' + i + '_data').value + '
';
// external link
} else if (document.getElementById('mode_' + i).selectedIndex == 2) {
HTML += '
' + document.getElementById('p3_' + i + '_data').value + '
';
// image
} else if (document.getElementById('mode_' + i).selectedIndex == 3) {
HTML += '
';
// separator
} else if (document.getElementById('mode_' + i).selectedIndex == 4) {
color = (document.getElementById('p2_' + i + '_data').value != "") ? document.getElementById('p2_' + i + '_data').value : "#4379a5";
HTML += '
';
// line
} else if (document.getElementById('mode_' + i).selectedIndex == 5) {
color = (document.getElementById('p2_' + i + '_data').value != "") ? document.getElementById('p2_' + i + '_data').value : "#cccccc";
HTML += '
';
// vertical space
} else if (document.getElementById('mode_' + i).selectedIndex == 6) {
margin = (document.getElementById('p2_' + i + '_data').value != "") ? document.getElementById('p2_' + i + '_data').value : "1em";
HTML += '
';
// direct HTML
} else if (document.getElementById('mode_' + i).selectedIndex == 7) {
HTML += '
' + document.getElementById('p2_' + i + '_data').value + '
';
// direct PHP
} else if (document.getElementById('mode_' + i).selectedIndex == 8) {
HTML += '
<?php ... ?>
';
}
}
HTML += '
';
document.getElementById(preview_td_id).innerHTML = HTML;
}
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alert("Note: The URL name may only contain letters, numbers, and the hyphen -.\nBlank spaces or other symbols are not allowed.");
}
check_passed = false;
}
if (checkForExistingUrlName(url_id, parent_id, old_url_name) == true) {
document.getElementById(url_id).style.border = "1px solid red";
document.getElementById(url_id).style.background = "#ffcccc";
if (alert_mode == "alert") {
alert("Note: The URL name already exists.");
}
check_passed = false;
}
if (check_passed == true) {
document.getElementById(url_id).style.border = "";
document.getElementById(url_id).style.background = "";
return true;
} else {
return false;
}
}
// overall check of the entered url_name for the root page
function url_name_check_for_root (url_id, alert_mode) {
// check the phrase
var reg_exp = /^([a-zA-Z0-9\-]*)$/;
phrase = document.getElementById(url_id).value;
if (!phrase.match(reg_exp)) {
document.getElementById(url_id).style.border = "1px solid red";
document.getElementById(url_id).style.background = "#ffcccc";
if (alert_mode == "alert") {
alert("Note: The URL name may only contain letters, numbers, and the hyphen -.\nBlank spaces or other symbols are not allowed.");
}
return false;
} else {
document.getElementById(url_id).style.border = "";
document.getElementById(url_id).style.background = "";
return true;
}
}
function setURL (parent_id, td_id) {
parent_id = document.getElementById(parent_id).value;
if (parent_id != 0) {
document.getElementById(td_id).innerHTML = "http://loosdrecht.ph2.uni-koeln.de/" + db_URLs[parent_id];
} else {
document.getElementById(td_id).innerHTML = "http://loosdrecht.ph2.uni-koeln.de/";
}
}
// check of the entered title (should be non-empty)
function title_check (title_id, alert_mode) {
if (document.getElementById(title_id).value.trim() == "") {
document.getElementById(title_id).style.border = "1px solid red";
document.getElementById(title_id).style.background = "#ffcccc";
if (alert_mode == "alert") {
alert("Please enter a non-empty title.");
}
return false;
} else {
document.getElementById(title_id).style.border = "";
document.getElementById(title_id).style.background = "";
return true;
}
}
function completeCheck(url_id, parent_id, title_id, old_url_name, login_time_id) {
result = (url_name_check(url_id, parent_id, 'alert', old_url_name) && title_check(title_id, 'alert') && time_check(login_time_id, 'alert'));
return result;
}
function completeCheck_for_root (title_id, login_time_id) {
result = (title_check(title_id, 'alert') && time_check(login_time_id, 'alert'));
return result;
}
function time_check (login_time_id, alert_mode) {
if (isNaN(document.getElementById(login_time_id).value) || (parseInt(document.getElementById(login_time_id).value) < 0)) {
if (alert_mode == "alert") {
alert("The entered login time is not a valid positive number.");
}
document.getElementById(login_time_id).style.border = "1px solid red";
document.getElementById(login_time_id).style.background = "#ffcccc";
return false;
}
document.getElementById(login_time_id).style.border = "";
document.getElementById(login_time_id).style.background = "";
return true;
}
function adaptAccess_create (access_type_id, username_id, password_id) {
// public access
if (document.getElementById(access_type_id).selectedIndex == 0) {
document.getElementById(username_id).disabled = true;
document.getElementById(username_id).value = "";
document.getElementById(password_id).disabled = true;
document.getElementById(password_id).value = "";
// password only
} else if (document.getElementById(access_type_id).selectedIndex == 1) {
document.getElementById(username_id).disabled = true;
document.getElementById(username_id).value = "";
document.getElementById(password_id).disabled = false;
// password and username
} else {
document.getElementById(username_id).disabled = false;
document.getElementById(password_id).disabled = false;
}
}
function adaptAccess (access_type_id, username_id, password_id, pwd_info_id) {
// public access
if (document.getElementById(access_type_id).selectedIndex == 0) {
document.getElementById(username_id).disabled = true;
document.getElementById(username_id).value = "";
document.getElementById(password_id).disabled = true;
document.getElementById(password_id).value = "";
document.getElementById(pwd_info_id).style.display = "none";
// password only
} else if (document.getElementById(access_type_id).selectedIndex == 1) {
document.getElementById(username_id).disabled = true;
document.getElementById(username_id).value = "";
document.getElementById(password_id).disabled = false;
document.getElementById(pwd_info_id).style.display = "table-row";
// password and username
} else {
document.getElementById(username_id).disabled = false;
document.getElementById(password_id).disabled = false;
document.getElementById(pwd_info_id).style.display = "table-row";
}
}
function toggle_advanced_settings (checkbox_id, tbody_id) {
if (document.getElementById(checkbox_id).checked == true) {
document.getElementById(tbody_id).style.display = "table-row-group";
} else {
document.getElementById(tbody_id).style.display = "none";
}
}
function showLoginTime (access_id) {
if (document.getElementById(access_id).selectedIndex == 0) {
document.getElementById("login_time").style.display = "none";
document.getElementById("expiration_time_in_minutes").value = "15";
} else {
document.getElementById("login_time").style.display = "table-row";
}
}
function updateImgPreviewSrc (header_image_url_id, header_image_url_img_id) {
document.getElementById(header_image_url_img_id).style.background = "url(" + document.getElementById(header_image_url_id).value + ") no-repeat";
}
function updateImgPreviewHeight (header_height_id, header_image_url_img_id) {
document.getElementById(header_image_url_img_id).style.height = document.getElementById(header_height_id).value;
}
function updateImgPreviewBackgroundColor (header_image_url_id, header_image_url_img_id) {
document.getElementById(header_image_url_img_id).style.background = document.getElementById(header_image_url_id).value;
}
function updateIconPreviewSrc (icon_image_url_id, icon_image_url_img_id) {
document.getElementById(icon_image_url_img_id).setAttribute("src", document.getElementById(icon_image_url_id).value);
}
// ********************
// main navigation stuff
// switch the level of the main navigation element, change the level button's arrow direction accordingly
function MainNavigation_toggleLevel (item_number) {
if (document.getElementById("mn_li_" + item_number).getAttribute("class") == "MainNavLi") {
document.getElementById("mn_li_" + item_number).setAttribute("class", "MainNavLi_Sub");
document.getElementById("mn_table_" + item_number).setAttribute("class", "MainNavTable_Sub");
document.getElementById("mn_toggle_" + item_number).setAttribute("value", "\u2190");
document.getElementById("mn_level_" + item_number).checked = "checked";
} else {
document.getElementById("mn_li_" + item_number).setAttribute("class", "MainNavLi");
document.getElementById("mn_table_" + item_number).setAttribute("class", "MainNavTable");
document.getElementById("mn_toggle_" + item_number).setAttribute("value", "\u2192");
document.getElementById("mn_level_" + item_number).checked = "";
}
}
// controls the visibility of either the page dropdown list or the URL text field depending on the item's mode
function MainNavigation_adjustItemLink (item_number) {
// internal link?
if (document.getElementById("mn_mode_" + item_number).value == "0") {
document.getElementById("mn_link_td_" + item_number).style.display = "none";
document.getElementById("mn_link_id_td_" + item_number).style.display = "table-cell";
// external link?
} else {
document.getElementById("mn_link_td_" + item_number).style.display = "table-cell";
document.getElementById("mn_link_id_td_" + item_number).style.display = "none";
}
}
// get the number of main navigation item
function MainNavigation_getNumberOfItems () {
tmp = 1;
while (document.getElementById('mn_li_' + tmp) != null) {
tmp++;
}
return tmp - 1;
}
// delete item with number 'item_number' from the main navigation item list
function MainNavigation_deleteItem (item_number) {
// first step: determine the absolute number of navigation elements
var item_count = MainNavigation_getNumberOfItems();
// second step: iterate through all rows in the interval [item_number, item_count] and shift the content up
for (i = item_number; i < item_count; i++) {
MainNavigation_switchItems(i, parseInt(i) + 1);
}
// third step: remove the last item (which is now identical to the second last item, if it exists)
document.getElementById('mn_li_' + item_count).parentNode.removeChild(document.getElementById('mn_li_' + item_count));
// fourth step: no items left? then show the "create main navigation" button
if (item_count <= 1) {
document.getElementById('mn_li_0').style.display = 'block';
}
}
// insert an item after the position of the item with number 'item_number'
function MainNavigation_insertItem (item_number) {
// first step: determine the absolute number of navigation elements
var item_count = MainNavigation_getNumberOfItems();
// second step: hide the "create main navigation" button
if (item_count <= 1) {
document.getElementById('mn_li_0').style.display = 'none';
}
// third step: create the new list entry and the table it contains with the buttons and data fields
// (note: structure can be found in index.php)
var new_item_number = item_count + 1;
var mn_li_new = document.createElement("li");
mn_li_new.setAttribute("id", "mn_li_" + new_item_number);
mn_li_new.setAttribute("class", "MainNavLi");
var mn_table_new = document.createElement("table");
mn_table_new.setAttribute("id", "mn_table_" + new_item_number);
mn_table_new.setAttribute("class", "MainNavTable");
mn_li_new.appendChild(mn_table_new);
var mn_tr_new = document.createElement("tr");
mn_table_new.appendChild(mn_tr_new);
var mn_toggle = document.createElement("td"); mn_tr_new.appendChild(mn_toggle);
mn_toggle.innerHTML = '';
var mn_level = document.createElement("td"); mn_tr_new.appendChild(mn_level);
mn_level.style = "display: none;";
mn_level.innerHTML = '';
var mn_insert = document.createElement("td"); mn_tr_new.appendChild(mn_insert);
mn_insert.innerHTML = '';
var mn_delete = document.createElement("td"); mn_tr_new.appendChild(mn_delete);
mn_delete.innerHTML = '';
var mn_move_down = document.createElement("td"); mn_tr_new.appendChild(mn_move_down);
mn_move_down.innerHTML = '';
var mn_mode = document.createElement("td"); mn_tr_new.appendChild(mn_mode);
mn_mode.innerHTML = '';
var mn_text = document.createElement("td"); mn_tr_new.appendChild(mn_text);
mn_text.innerHTML = '';
var mn_link_td = document.createElement("td"); mn_tr_new.appendChild(mn_link_td);
mn_link_td.setAttribute("id", "mn_link_td_" + new_item_number);
mn_link_td.setAttribute("style", "width: 100%; display: none;");
mn_link_td.innerHTML = '';
var mn_link_id_td = document.createElement("td"); mn_tr_new.appendChild(mn_link_id_td);
mn_link_id_td.setAttribute("id", "mn_link_id_td_" + new_item_number);
mn_link_id_td.innerHTML = '';
// and add it to the main list
document.getElementById('MainNavList').appendChild(mn_li_new);
// fourth step: shift all entries down so that the item after the item with number 'item_number' is empty;
// only do that for non-vanishing items
if (item_number > 0) {
for (i = item_count + 1; i > parseInt(item_number) + 1; i--) {
MainNavigation_switchItems(i, i - 1);
}
}
}
// this function switches two items in the main navigation list
function MainNavigation_switchItems (item_number_1, item_number_2) {
tmp = document.getElementById('mn_li_' + item_number_1).getAttribute("class");
document.getElementById('mn_li_' + item_number_1).setAttribute("class", document.getElementById('mn_li_' + item_number_2).getAttribute("class"));
document.getElementById('mn_li_' + item_number_2).setAttribute("class", tmp);
tmp = document.getElementById('mn_table_' + item_number_1).getAttribute("class");
document.getElementById('mn_table_' + item_number_1).setAttribute("class", document.getElementById('mn_table_' + item_number_2).getAttribute("class"));
document.getElementById('mn_table_' + item_number_2).setAttribute("class", tmp);
tmp = document.getElementById('mn_toggle_' + item_number_1).value;
document.getElementById('mn_toggle_' + item_number_1).value = document.getElementById('mn_toggle_' + item_number_2).value;
document.getElementById('mn_toggle_' + item_number_2).value = tmp;
tmp = document.getElementById('mn_level_' + item_number_1).checked;
document.getElementById('mn_level_' + item_number_1).checked = document.getElementById('mn_level_' + item_number_2).checked;
document.getElementById('mn_level_' + item_number_2).checked = tmp;
tmp = document.getElementById('mn_mode_' + item_number_1).selectedIndex;
document.getElementById('mn_mode_' + item_number_1).selectedIndex = document.getElementById('mn_mode_' + item_number_2).selectedIndex;
document.getElementById('mn_mode_' + item_number_2).selectedIndex = tmp;
tmp = document.getElementById('mn_text_' + item_number_1).value;
document.getElementById('mn_text_' + item_number_1).value = document.getElementById('mn_text_' + item_number_2).value;
document.getElementById('mn_text_' + item_number_2).value = tmp;
tmp = document.getElementById('mn_link_td_' + item_number_1).style.display;
document.getElementById('mn_link_td_' + item_number_1).style.display = document.getElementById('mn_link_td_' + item_number_2).style.display;
document.getElementById('mn_link_td_' + item_number_2).style.display = tmp;
tmp = document.getElementById('mn_link_' + item_number_1).value;
document.getElementById('mn_link_' + item_number_1).value = document.getElementById('mn_link_' + item_number_2).value;
document.getElementById('mn_link_' + item_number_2).value = tmp;
tmp = document.getElementById('mn_link_id_td_' + item_number_1).style.display;
document.getElementById('mn_link_id_td_' + item_number_1).style.display = document.getElementById('mn_link_id_td_' + item_number_2).style.display;
document.getElementById('mn_link_id_td_' + item_number_2).style.display = tmp;
tmp = document.getElementById('mn_link_id_' + item_number_1).selectedIndex;
document.getElementById('mn_link_id_' + item_number_1).selectedIndex = document.getElementById('mn_link_id_' + item_number_2).selectedIndex;
document.getElementById('mn_link_id_' + item_number_2).selectedIndex = tmp;
}
// this function checks the main navigation item list for consistency, i.e. the first element needs to be level 0
function MainNavigation_checkItems () {
// first step: determine the absolute number of navigation elements
item_count = MainNavigation_getNumberOfItems();
// second step: check the first element, if available
if (item_count >= 1) {
// problem? then display a message
if (document.getElementById('mn_li_1').getAttribute("class") == "MainNavLi_Sub") {
document.getElementById("mn_notification_tr").style.display = "none";
//document.getElementById('mn_li_1').setAttribute("class", "MainNavLi");
//document.getElementById('mn_table_1').setAttribute("class", "MainNavTable");
//document.getElementById('mn_toggle_1').setAttribute("value", "\u2192");
alert("Error: The first main navigation element needs to be a root.");
return false;
}
// no items?
} else {
alert("Error: The main navigation is emtpy.");
return false;
}
return true;
}
// moves a main navigation item up in the list
function MainNavigation_moveUpItem (item_number) {
// first step: determine the absolute number of items
var item_count = MainNavigation_getNumberOfItems();
// second step: is it possible to move up? I.e. are there more than one items above && is the current item not the first one?
// then simply switch the values of the current item and the item before
if ((item_count > 1) && (item_number > 1)) {
MainNavigation_switchItems(item_number, item_number - 1);
}
}
// creates the main navigation preview
function MainNavigation_createPreview () {
// first step: determine the absolute number of items
var item_count = MainNavigation_getNumberOfItems();
// second step: check if the first navigation element (if it exists) is a level 0 type
// (because otherwise the main navigation structure is faulty and cannot be previewed properly)
if (item_count > 0) {
if (MainNavigation_isItemLevel0(1) == false) {
document.getElementById("MainNavigation_Preview").innerHTML = "";
alert("Error: Preview could not be generated.\nThe first main navigation element needs to be a root.");
return;
}
}
// third step: cycle through all items and create the navigation html
var html = '
';
var submenu_counter = 0;
var in_submenu = false;
for (i = 1; i <= item_count; i++) {
// is the current element a navigation level 0 node?
if (MainNavigation_isItemLevel0(i)) {
// were we still in a subnav before we hit this new level 0 node?
if (in_submenu) {
html += '
';
in_submenu = false;
}
// does it have a sub navigation?
if (MainNavigation_isNextItemPartOfSubNav(i)) {
submenu_counter += 1;
in_submenu = true;
html += '
';
html += '' + document.getElementById("mn_text_" + i).value + '';
html += '
';
}
// is the current element a navigation level 1 mode?
} else {
// internal or external link?
if (document.getElementById("mn_mode_" + i).value == "0") {
html += '