/
functions.js
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functions.js
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// to hide elements displayed by JavaScript
document.body.className = 'js';
/** Toggle visibility
* @param string
* @return boolean
*/
function toggle(id) {
var el = document.getElementById(id);
el.className = (el.className == 'hidden' ? '' : 'hidden');
return true;
}
/** Set permanent cookie
* @param string
* @param number
* @param string optional
*/
function cookie(assign, days, params) {
var date = new Date();
date.setDate(date.getDate() + days);
document.cookie = assign + '; expires=' + date + (params || '');
}
/** Verify current Adminer version
* @param string 'http' or 'https'
*/
function verifyVersion(protocol) {
cookie('adminer_version=0', 1);
var script = document.createElement('script');
script.src = protocol + '://www.adminer.org/version.php';
document.body.appendChild(script);
}
/** Get value of select
* @param HTMLSelectElement
* @return string
*/
function selectValue(select) {
return (select.value !== undefined ? select.value : select.options[select.selectedIndex].text);
}
/** Check all elements matching given name
* @param HTMLInputElement
* @param RegExp
*/
function formCheck(el, name) {
var elems = el.form.elements;
for (var i=0; i < elems.length; i++) {
if (name.test(elems[i].name)) {
elems[i].checked = el.checked;
}
}
}
/** Uncheck single element
* @param string
*/
function formUncheck(id) {
document.getElementById(id).checked = false;
}
/** Get number of checked elements matching given name
* @param HTMLInputElement
* @param RegExp
* @return number
*/
function formChecked(el, name) {
var checked = 0;
var elems = el.form.elements;
for (var i=0; i < elems.length; i++) {
if (name.test(elems[i].name) && elems[i].checked) {
checked++;
}
}
return checked;
}
/** Select clicked row
* @param MouseEvent
*/
function tableClick(event) {
var el = event.target || event.srcElement;
while (!/^tr$/i.test(el.tagName)) {
if (/^(table|a|input|textarea)$/i.test(el.tagName)) {
return;
}
el = el.parentNode;
}
el = el.firstChild.firstChild;
el.click && el.click();
el.onclick && el.onclick();
}
/** Set HTML code of an element
* @param string
* @param string undefined to set parentNode to
*/
function setHtml(id, html) {
var el = document.getElementById(id);
if (el) {
if (html == undefined) {
el.parentNode.innerHTML = ' ';
} else {
el.innerHTML = html;
}
}
}
/** Add row in select fieldset
* @param HTMLSelectElement
*/
function selectAddRow(field) {
var row = field.parentNode.cloneNode(true);
var selects = row.getElementsByTagName('select');
for (var i=0; i < selects.length; i++) {
selects[i].name = selects[i].name.replace(/[a-z]\[[0-9]+/, '$&1');
selects[i].selectedIndex = 0;
}
var inputs = row.getElementsByTagName('input');
if (inputs.length) {
inputs[0].name = inputs[0].name.replace(/[a-z]\[[0-9]+/, '$&1');
inputs[0].value = '';
inputs[0].className = '';
}
field.parentNode.parentNode.appendChild(row);
field.onchange = function () { };
}
/** Handle Ctrl+Enter and optionally Tab in textarea
* @param HTMLTextAreaElement
* @param KeyboardEvent
* @param boolean handle also Tab
* @param HTMLInputElement submit button
* @return boolean
*/
function textareaKeydown(target, event, tab, button) {
if (tab && event.keyCode == 9 && !event.shiftKey && !event.altKey && !event.ctrlKey && !event.metaKey) {
// inspired by http://pallieter.org/Projects/insertTab/
if (target.setSelectionRange) {
var start = target.selectionStart;
target.value = target.value.substr(0, start) + '\t' + target.value.substr(target.selectionEnd);
target.setSelectionRange(start + 1, start + 1);
return false; //! still loses focus in Opera, can be solved by handling onblur
} else if (target.createTextRange) {
document.selection.createRange().text = '\t';
return false;
}
}
if (event.ctrlKey && (event.keyCode == 13 || event.keyCode == 10) && !event.altKey && !event.metaKey) { // shiftKey allowed
if (button) {
button.click();
} else if (!target.form.onsubmit || target.form.onsubmit() !== false) {
target.form.submit();
}
}
return true;
}
/** Create AJAX request
* @param string
* @param function (text)
* @param [string]
* @return XMLHttpRequest or false in case of an error
*/
function ajax(url, callback, data) {
var xmlhttp = (window.XMLHttpRequest ? new XMLHttpRequest() : (window.ActiveXObject ? new ActiveXObject('Microsoft.XMLHTTP') : false));
if (xmlhttp) {
xmlhttp.open((data === undefined ? 'GET' : 'POST'), url);
if (data) {
xmlhttp.setRequestHeader('Content-Type', 'application/x-www-form-urlencoded');
}
xmlhttp.setRequestHeader('X-Requested-With', 'XMLHttpRequest');
xmlhttp.onreadystatechange = function (text) {
if (xmlhttp.readyState == 4) {
callback(xmlhttp.responseText);
}
};
xmlhttp.send(data);
}
return xmlhttp;
}
/** Use setHtml(key, value) for JSON response
* @param string
* @return XMLHttpRequest or false in case of an error
*/
function ajaxSetHtml(url) {
return ajax(url, function (text) {
var data = eval('(' + text + ')');
for (var key in data) {
setHtml(key, data[key]);
}
});
}
var ajaxState = 0;
var ajaxTimeout;
/** Load content to #main
* @param string
* @param [string]
* @return XMLHttpRequest or false in case of an error
*/
function ajaxMain(url, data) {
var currentState = ++ajaxState;
clearTimeout(ajaxTimeout);
ajaxTimeout = setTimeout(function () {
setHtml('main', '<img src="../adminer/static/loader.gif" alt="">');
}, 500); // defer displaying loader
return ajax(url, function (text) {
if (currentState == ajaxState) {
clearTimeout(ajaxTimeout);
setHtml('main', text);
if (window.jush) {
jush.highlight_tag('code');
jush.highlight_tag('pre', 0);
}
}
}, data);
}
/** Send form by AJAX GET
* @param HTMLFormElement
* @param [string]
* @return XMLHttpRequest or false in case of an error
*/
function ajaxForm(form, data) {
var params = [ ];
for (var i=0; i < form.elements.length; i++) {
var el = form.elements[i];
if (el.name && (!/checkbox|radio|submit|file/i.test(el.type) || el.checked)) {
params.push(encodeURIComponent(el.name) + '=' + encodeURIComponent(/select/i.test(el.tagName) ? selectValue(el) : el.value));
}
}
if (data) {
params.push(data);
}
if (form.method == 'post') {
return ajaxMain((/\?/.test(form.action) ? form.action : location.href), params.join('&')); // ? - always part of Adminer URL
} else {
return ajaxMain((form.action || location.pathname) + '?' + params.join('&'));
}
}
/** Display edit field
* @param HTMLElement
* @param MouseEvent
* @param number display textarea instead of input, 2 - load long text
*/
function selectDblClick(td, event, text) {
var pos = event.rangeOffset;
var value = (td.firstChild.firstChild ? td.firstChild.firstChild.data : (td.firstChild.alt ? td.firstChild.alt : td.firstChild.data));
var input = document.createElement(text ? 'textarea' : 'input');
input.style.width = Math.max(td.clientWidth - 14, 20) + 'px'; // 14 = 2 * (td.border + td.padding + input.border)
if (text) {
var rows = 1;
value.replace(/\n/g, function () {
rows++;
});
input.rows = rows;
input.onkeydown = function (event) {
return textareaKeydown(input, event || window.event, false, document.getElementById('save'));
};
}
if (document.selection) {
var range = document.selection.createRange();
range.moveToPoint(event.x, event.y);
var range2 = range.duplicate();
range2.moveToElementText(td);
range2.setEndPoint('EndToEnd', range);
pos = range2.text.length;
}
td.innerHTML = '';
td.appendChild(input);
input.focus();
if (text == 2) { // long text
return ajax(location.href + '&' + encodeURIComponent(td.id) + '=', function (text) {
input.value = text;
input.name = td.id;
});
}
input.value = (value == '\u00A0' || td.getElementsByTagName('i').length ? '' : value); // or i - NULL
input.name = td.id;
input.selectionStart = pos;
input.selectionEnd = pos;
if (document.selection) {
var range = document.selection.createRange();
range.moveStart('character', pos);
range.select();
}
td.ondblclick = function () { };
}