/**
* BeNomad BeMap JavaScript API - GeoAutocomplete
*/
/**
* @classdesc
* Base class for GeoAutocomplete.
* @public
* @constructor
* @abstract
* @param {bemap.Context} context BeMap-JS-API Context. Mandatory.
* @param {object} options see below the available values.
*/
bemap.GeoAutocomplete = function(context, options) {
this.context = context;
this.geoserver = context.geoserver;
var opts = options ? options : {};
if (opts.geoserver) {
this.geoserver = opts.geoserver;
}
};
/**
*Autocomplete is sending only when user stop taping text in input and after option.timer time
*@param options see below
*@param listener return by function, list of autocomplete results
*/
bemap.GeoAutocomplete.prototype.autocomplete = function(options, listener) {
if (!options) {
console.error("Options required");
};
if (!options.inputId) {
console.error("Input ID required");
};
if (!options.countryCode) {
console.error("Country code required");
};
if (!options.target) {
console.error("Target required");
};
//switch to allows list of autocomplete propositions
var showList = true
if (!options.showList && options.showList !== undefined) {
showList = options.showList;
}
//stock this class event
var _this = this;
var id = options.inputId;
//call geocoder methode and pass this context
var geo = new bemap.Geocoder(this.context);
//set timer to send the request to the geocoder
var typingTimer; //timer identifier
var doneTypingInterval = options.timer ? options.timer : 2000; //time in ms
//on keyup, start the countdown
id[0].addEventListener("input", function(e) {
var countryCode = options.countryCode
if (typeof countryCode !== 'string') {
countryCode = options.countryCode.val()
};
//initialize geocoder elements
var elements = {
searchInfo: new bemap.GeoSearchInfo({
searchType: options.searchType ? options.searchType : "CONTAINS",
countryCode: countryCode,
country: options.country,
language: options.language ? options.language : '',
maxResult: options.maxResult ? options.maxResult : 10
})
}
//after every click
clearTimeout(typingTimer);
if ($(id).val()) {
//requires city if search street if not algorythm not working
if (options.target == "street") {
if (!options.city) {
console.error("City required");
} else {
var city = options.city;
if (typeof city !== 'string') {
city = options.city.val();
}
elements.searchInfo.city = city;
};
};
//check if parametr of research exist
if (elements.searchInfo[options.target] !== undefined) {
elements.searchInfo[options.target] = $(id).val()
} else {
console.error("Target do not exist");
}
//the request is sending when user stop taping and after option.timer
typingTimer = setTimeout(function() {
//create success call for the geocode methode chack geocode documentation
elements.success = function(response, doc, object, xhr) {
//prepare list of results
var countries = [];
for (var i = 0; i < response.geocodingItems.length; i++) {
var address = response.geocodingItems[i].PostalAddress[0][options.target]
if (address !== null) {
countries.push(address)
}
}
//show list by calling showList methode if true
if (countries.length !== 0) {
if (showList) {
_this.showList(id[0], countries);
};
//sent the result if listener
if (listener) {
listener(countries)
};
} else {
console.log('The result of autocomplete not found');
};
} //end of success element
//call geocode methode from Geocoding class
console.log(elements);
geo.geocode(elements);
}, doneTypingInterval);
} //end of input veryfication
}); //end of input change
}
/**
*This methode was found on the net to prevent charging jQuery UI lib with nice autocomplete functionality
*@param inp - id of input field
*@param arr - result of geocoding already filtred
*/
bemap.GeoAutocomplete.prototype.showList = function(inp, arr) {
/*the autocomplete function takes two arguments,
the text field element and an array of possible autocompleted values:*/
var currentFocus;
/*execute a function when someone writes in the text field:*/
var a, b, i, val = inp.value;
/*close any already open lists of autocompleted values*/
closeAllLists();
if (!val) {
return false;
}
currentFocus = -1;
/*create a DIV element that will contain the items (values):*/
a = document.createElement("DIV");
a.setAttribute("id", inp.id + "autocomplete-list");
a.setAttribute("class", "autocomplete-items");
/*append the DIV element as a child of the autocomplete container:*/
inp.parentNode.appendChild(a);
/*for each item in the array...*/
for (i = 0; i < arr.length; i++) {
//check at which position tapping value apears in arr stringify
var item = arr[i].toUpperCase()
var getIdx = item.indexOf(val.toUpperCase())
/*create a DIV element for each matching element:*/
b = document.createElement("DIV");
/*make the matching letters bold:*/
if (getIdx >= 0) {
b.innerHTML += arr[i].substr(0, getIdx);
b.innerHTML += "<strong>" + arr[i].substr(getIdx, val.length) + "</strong>";
b.innerHTML += arr[i].substr(val.length + getIdx);
} else {
b.innerHTML = arr[i]
}
/*insert a input field that will hold the current array item's value:*/
b.innerHTML += "<input type='hidden' value='" + arr[i] + "'>";
/*execute a function when someone clicks on the item value (DIV element):*/
b.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();
});
a.appendChild(b);
}
//detect if listener was already added to the input
if (inp.getAttribute('listener') !== 'true') {
/*execute a function presses a key on the keyboard:*/
inp.addEventListener("keydown", function(e) {
this.setAttribute('listener', 'true');
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) { //up
/*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,*/
e.preventDefault();
if (currentFocus > -1) {
/*and simulate a click on the "active" item:*/
if (x) x[currentFocus].click();
}
}
});
}
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:*/
var x = document.getElementsByClassName("autocomplete-items");
for (var i = 0; i < x.length; i++) {
if (elmnt != x[i] && elmnt != inp) {
x[i].parentNode.removeChild(x[i]);
}
}
}
/*execute a function when someone clicks in the document:*/
document.addEventListener("click", function(e) {
closeAllLists(e.target);
});
}