src/Fields/AutoSuggestSelect.php
<?php
namespace Grafite\Forms\Fields;
use Grafite\Forms\Fields\Field;
class AutoSuggestSelect extends Field
{
/**
* Input type
*
* @return string
*/
protected static function getType()
{
return 'text';
}
public static function onLoadJs($id, $options)
{
return "_formsjs_autosuggestSelectField";
}
public static function onLoadJsData($id, $options)
{
foreach ($options as $key => $option) {
if (! in_array($key, static::getFieldOptions())) {
$options['options'][$key] = $option;
}
}
return json_encode($options['options']);
}
public static function js($id, $options)
{
return <<<JS
_formsjs_autosuggestSelectField = function (inp) {
if (! inp.getAttribute('data-formsjs-rendered')) {
let arr = JSON.parse(inp.getAttribute('data-formsjs-onload-data'));
inp.type = "hidden";
var currentFocus;
let _altInput = inp.cloneNode(true);
_altInput.id = inp.id + "_visual";
_altInput.name = inp.name + "_visual";
_altInput.type = "text";
if (arr[inp.value]) {
_altInput.value = arr[inp.value];
}
_altInput.autocomplete = "off";
inp.parentNode.appendChild(_altInput);
_altInput.addEventListener("focusin", function (e) {
formCloseAllSelectLists();
this.value = '';
_formDisplaySelection(this, this.value);
setTimeout(function () {
_altInput.addEventListener("click", formCloseAllSelectLists);
}, 250);
});
_altInput.addEventListener("input", function(e) {
var a, b, i, val = this.value;
formCloseAllSelectLists();
_formDisplaySelection(this, this.value);
});
function formCloseAllSelectLists(elmnt) {
var x = document.getElementsByClassName("form-autocomplete-items");
for (var i = 0; i < x.length; i++) {
if (elmnt != x[i] && elmnt != x[i].previousElementSibling) {
x[i].parentNode.removeChild(x[i]);
}
}
}
function _formDisplaySelection(_field, val) {
currentFocus = -1;
let _formElementStyle = getComputedStyle(_field);
/*create a DIV element that will contain the items (values):*/
let a = document.createElement("DIV");
a.setAttribute("id", _altInput.id + "form-autocomplete-list");
a.setAttribute("class", "form-autocomplete-items rounded");
let border = "border: " + _formElementStyle.border + "; ";
let width = "width:"+ _altInput.offsetWidth + "px; ";
let background = "background-color: " + _formElementStyle.backgroundColor + "; ";
a.setAttribute("style", width + border + background);
/*append the DIV element as a child of the autocomplete container:*/
_altInput.parentNode.appendChild(a);
let _itemCount = Object.keys(arr).length
Object.keys(arr).forEach(key => {
if (arr[key].substr(0, val.length).toUpperCase() == val.toUpperCase()) {
let b = document.createElement("DIV");
let background = "background-color: " + _formElementStyle.backgroundColor + "; ";
b.setAttribute('style', background);
b.innerHTML = "<strong>" + arr[key].substr(0, val.length) + "</strong>";
b.innerHTML += arr[key].substr(val.length);
b.innerHTML += "<input type='hidden' value='" + key + "'>";
b.addEventListener("click", function(e) {
inp.value = this.getElementsByTagName("input")[0].value;
_altInput.value = arr[key];
formCloseAllSelectLists();
if (a.childNodes.length > 0) {
_altInput.setAttribute('class', inp.getAttribute('class'))
let _formElementStyle = getComputedStyle(_altInput);
let border = "border: " + _formElementStyle.border + "; ";
let width = "width:"+ _altInput.offsetWidth + "px; ";
a.setAttribute("style", width + border);
}
});
a.appendChild(b);
}
});
if (a.childNodes.length === 0) {
a.style.display = 'none';
}
}
document.addEventListener("click", function (e) {
formCloseAllSelectLists(e.target);
});
_altInput.addEventListener('focusout', function () {
if (inp.value === '') {
_altInput.value = 'None';
inp.value = null;
}
if (inp.value !== '') {
_altInput.value = arr[inp.value];
}
if (_altInput.value === '') {
_altInput.value = 'None';
inp.value = null;
}
setTimeout(function () {
formCloseAllSelectLists();
_altInput.removeEventListener("click", formCloseAllSelectLists);
}, 250);
});
function addSelectActive(x) {
if (!x) return false;
removeSelectActive(x);
if (currentFocus >= x.length) currentFocus = 0;
if (currentFocus < 0) currentFocus = (x.length - 1);
x[currentFocus].classList.add("form-autocomplete-active");
x[currentFocus].parentNode.scrollTop = currentFocus * 44;
}
function removeSelectActive(x) {
for (var i = 0; i < x.length; i++) {
x[i].classList.remove("form-autocomplete-active");
}
}
/*execute a function presses a key on the keyboard:*/
_altInput.addEventListener("keydown", function(e) {
var x = document.getElementById(this.id + "form-autocomplete-list");
if (x) x = x.getElementsByTagName("div");
if (e.keyCode == 40) {
currentFocus++;
addSelectActive(x);
} else if (e.keyCode == 38) { //up
currentFocus--;
addSelectActive(x);
} else if (e.keyCode == 13) {
e.preventDefault();
if (currentFocus > -1) {
if (x) x[currentFocus].click();
}
}
let _list = document.getElementById(_altInput.id + "form-autocomplete-list");
if (_list && _list.childNodes.length === 0) {
_altInput.setAttribute('class', inp.getAttribute('class') + ' is-invalid');
}
if (_list && _list.childNodes.length > 0) {
_altInput.setAttribute('class', inp.getAttribute('class'))
let _formElementStyle = getComputedStyle(_altInput);
let border = "border: " + _formElementStyle.border + "; ";
let width = "width:"+ _altInput.offsetWidth + "px; ";
_list.setAttribute("style", width + border);
}
});
}
}
JS;
}
/**
* Field related styles
*
* @param string $id
* @param array $options
* @return string|null
*/
public static function styles($id, $options)
{
return <<<CSS
.form-autocomplete {
position: relative;
display: inline-block;
}
.form-autocomplete-items {
position: absolute;
border-bottom: none;
border-top: none;
z-index: 99;
margin-top: 8px;
max-height: 300px;
overflow-y: scroll;
}
.form-autocomplete-items div {
padding: 10px;
cursor: pointer;
}
.form-autocomplete-items div:hover {
/*when hovering an item:*/
background-color: #e9e9e9;
}
.form-autocomplete-active {
/*when navigating through the items using the arrow keys:*/
background-color: var(--bs-primary) !important;
color: #ffffff;
}
CSS;
}
}