d9ca19ada6
Autocomplete menu had a bug that showed the same item more than once as the user kept on typing. The issue is now fixed since the way the items are closed is reworked and is solidly working all right.
107 lines
4.2 KiB
JavaScript
107 lines
4.2 KiB
JavaScript
function autocomplete(inp, passedValues) {
|
|
var currentFocus;
|
|
|
|
/*execute a function when someone writes in the text field:*/
|
|
inp.addEventListener("input", function(e) {
|
|
var item, val = this.value;
|
|
var parentContainer = document.getElementsByClassName('autocomplete-items-container')[0];
|
|
|
|
/*close any already open lists of autocompleted values*/
|
|
closeAllLists();
|
|
if (!val) {
|
|
parentContainer.style.paddingBottom = "0";
|
|
return false;
|
|
}
|
|
currentFocus = -1;
|
|
|
|
// Update some values of the parent container
|
|
parentContainer.setAttribute("id", this.id + "-autocomplete-list");
|
|
parentContainer.style.paddingBottom = "1rem";
|
|
|
|
|
|
/*for each item in the array...*/
|
|
Object.keys(passedValues).forEach((el, i, arr) => {
|
|
|
|
/*check if the item starts with the same letters as the text field value:*/
|
|
if (arr[i].toLowerCase().includes(val.toLowerCase())) {
|
|
/*create a DIV element for each matching element:*/
|
|
item = document.createElement("DIV");
|
|
item.setAttribute("class", "autocomplete-item");
|
|
// Add the url as an attribute
|
|
item.setAttribute('url', passedValues[el]);
|
|
|
|
/*make the matching letters bold:*/
|
|
item.innerHTML = "<strong>" + arr[i].substr(0, val.length) + "</strong>";
|
|
item.innerHTML += arr[i].substr(val.length);
|
|
/*insert a input field that will hold the current array item's value:*/
|
|
item.innerHTML += "<input type='hidden' value='" + arr[i] + "'>";
|
|
/*execute a function when someone clicks on the item value (DIV element):*/
|
|
item.addEventListener("click", function(e) {
|
|
/*insert the value for the autocomplete text field:*/
|
|
inp.value = this.getElementsByTagName("input")[0].value;
|
|
/*close the list of autocompleted values,
|
|
(or any other open lists of autocompleted values:*/
|
|
closeAllLists();
|
|
});
|
|
parentContainer.appendChild(item);
|
|
}
|
|
})
|
|
});
|
|
|
|
/*execute a function presses a key on the keyboard:*/
|
|
inp.addEventListener("keydown", function(e) {
|
|
var x = document.getElementById(this.id + "-autocomplete-list");
|
|
if (x) x = x.getElementsByTagName("div");
|
|
if (e.keyCode == 40) {
|
|
/*If the arrow DOWN key is pressed,
|
|
increase the currentFocus variable:*/
|
|
currentFocus++;
|
|
/*and and make the current item more visible:*/
|
|
addActive(x);
|
|
}
|
|
else if (e.keyCode == 38) {
|
|
/*If the arrow UP key is pressed,
|
|
decrease the currentFocus variable:*/
|
|
currentFocus--;
|
|
/*and and make the current item more visible:*/
|
|
addActive(x);
|
|
}
|
|
else if (e.keyCode == 13) {
|
|
/*If the ENTER key is pressed, prevent the form from being submitted,*/
|
|
if (currentFocus > -1) {
|
|
e.preventDefault();
|
|
/*and simulate a click on the "active" item:*/
|
|
if (x) window.location = x[0].getAttribute('url');
|
|
}
|
|
}
|
|
});
|
|
|
|
function addActive(x) {
|
|
/*a function to classify an item as "active":*/
|
|
if (!x) return false;
|
|
/*start by removing the "active" class on all items:*/
|
|
removeActive(x);
|
|
if (currentFocus >= x.length) currentFocus = 0;
|
|
if (currentFocus < 0) currentFocus = (x.length - 1);
|
|
/*add class "autocomplete-active":*/
|
|
x[currentFocus].classList.add("autocomplete-active");
|
|
}
|
|
|
|
function removeActive(x) {
|
|
/*a function to remove the "active" class from all autocomplete items:*/
|
|
for (var i = 0; i < x.length; i++) {
|
|
x[i].classList.remove("autocomplete-active");
|
|
}
|
|
}
|
|
|
|
function closeAllLists(elmnt) {
|
|
/*close all autocomplete lists in the document,
|
|
except the one passed as an argument:*/
|
|
document.getElementsByClassName("autocomplete-items-container")[0].innerHTML = "";
|
|
}
|
|
|
|
/*execute a function when someone clicks in the document:*/
|
|
document.addEventListener("click", function (e) {
|
|
closeAllLists(e.target);
|
|
});
|
|
} |