Google maps autocomplete filter by multiple countries

At the end of last year (2014) I had to modify an existing Google maps autocomplete to filter by multiple countries. To my horror I discovered this was not possible, in fact the issue / feature request has been logged since 2012 (google issue) without any real fix. So I had to work around it.

I found out it is possible to get Autocomplete predictions, but sadly they suffer from the same shortcoming. However the predictions return a list of, well predictions allowing the developer to make their own lists. So that’s what I did and after sprinkling some jQuery around I came up with my own custom Autocomplete.

I only had to search a secondary country (Luxemburg) when the current country was Belgium, that’s why those countries are hard coded in the demo example. Feel free to use the code and change it in any way.

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<!DOCTYPE html>

<html>
<head>
<title>Retrieving Autocomplete Predictions</title>
<script type="text/javascript" src="jquery.js"></script>
<script type="text/javascript" src="https://maps.googleapis.com/maps/api/js?libraries=places&v=3.exp"></script>
<script>

function initialize() {
$("#place").live("keyup", function (evt) {
// Clear any previously set timer before setting a new one
window.clearTimeout($(this).data("timeout"));
$(this).data("timeout", setTimeout(function () {
//whe the timeout has expired get the predictions
var inputData = $("#place").val();
service = new google.maps.places.AutocompleteService();
var request = {
input: inputData,
componentRestrictions: {country: 'be'},
};
var secondaryRequest = {
input: inputData,
componentRestrictions: {country: 'lu'},
};
$('#resultWindow').empty();
service.getPlacePredictions(request, callback);
service.getPlacePredictions(secondaryRequest, callback);
}, 1000));
});

function callback(predictions, status) {
if (status != google.maps.places.PlacesServiceStatus.OK) {
console.log(status);
return;
}
var resultHTML = '';
for (var i = 0, prediction; prediction = predictions[i]; i++) {
resultHTML += '<div>' + prediction.description + '</div>';
}
if($('#resultWindow').html() != undefined && $('#resultWindow').html() != ''){
resultHTML = $('#resultWindow').html()+ resultHTML;
}
if(resultHTML != undefined && resultHTML != ''){
$('#resultWindow').html(resultHTML).show();
}
//add the "powered by google" image at the bottom -> required!!
if($('#resultWindow').html() != undefined){
$('#resultWindow #googleImage').remove();
var imageHtml = $('#resultWindow').html()
+ '<img id="googleImage" src="powered-by-google-on-white2.png"/>';
$('#resultWindow').html(imageHtml);
}
}

function geocodeAddress(address) {
var geocoder = new google.maps.Geocoder();
geocoder.geocode({'address': address}, function (results, status)
{
if (status == google.maps.GeocoderStatus.OK)
{
$('#latitude').val(results[0].geometry.location.lat());
$('#longitude').val(results[0].geometry.location.lng());
}
else {
console.log("Error: " + google.maps.GeocoderStatus);
}
});
}
$('#resultWindow div').live('click',function(){
//get the coördinates for the selected (clicked) address
$('#resultWindow').hide();
var address = $(this).text();
var addressParts = address.split(',');
$('#country').val(addressParts[2]);
$('#city').val(addressParts[1]);
$('#place').val(addressParts[0]);
if(address != ''){
geocodeAddress(address);
}
});
/*end custom autocomplete stuff*/
}
google.maps.event.addDomListener(window, 'load', initialize);

</script>
<style type="text/css">
#resultWindow{
position: fixed;
/* top: 0;
left: 0;
width: 100%;
height: 100%;*/

background-color: #fff;
filter:alpha(opacity=50);
-moz-opacity:0.5;
-khtml-opacity: 0.5;
opacity: 0.5;
z-index: 10000;
border: 1px solid black;
color:black;
display:none;
}
</style>
</head>
<body>
<div id="placeholder">
<input type="text" id="place" style="width:200px;"/>
<label for="latitude">Latitude</label>
<input type="text" id="latitude"/>
<label for="longitude">Longitude</label>
<input type="text" id="longitude"/>
<label for="city">city</label>
<input type="text" id="city"/>
<label for="country">selected country</label>
<input type="text" id="country"/>
<div id="resultWindow"></div>
</div>
</body>
</html>