Place Autocomplete and Directions

by Arnaud

HTML

<input id="origin-input" class="controls" type="text" placeholder="Enter an origin location"> <input id="destination-input" class="controls" type="text" placeholder="Enter a destination location"> <div id="mode-selector" class="controls"> <input type="radio" name="type" id="changemode-walking" checked="checked"> <label for="changemode-walking">Walking</label> <input type="radio" name="type" id="changemode-transit"> <label for="changemode-transit">Transit</label> <input type="radio" name="type" id="changemode-driving"> <label for="changemode-driving">Driving</label> </div> <div id="map"></div>
<!-- Replace the value of the key parameter with your own API key. --> <script src="https://maps.googleapis.com/maps/api/js?key=AIzaSyCkUOdZ5y7hMm0yrcCQoCvLwzdM6M8s5qk&libraries=places&callback=initMap" async defer></script>

CSS

/* Always set the map height explicitly to define the size of the div * element that contains the map. */ #map { height: 100%; } /* Optional: Makes the sample page fill the window. */ html, body { height: 100%; margin: 0; padding: 0; }
.controls { margin-top: 10px; border: 1px solid transparent; border-radius: 2px 0 0 2px; box-sizing: border-box; -moz-box-sizing: border-box; height: 32px; outline: none; box-shadow: 0 2px 6px rgba(0, 0, 0, 0.3); } #origin-input, #destination-input { background-color: #fff; font-family: Roboto; font-size: 15px; font-weight: 300; margin-left: 12px; padding: 0 11px 0 13px; text-overflow: ellipsis; width: 200px; } #origin-input:focus, #destination-input:focus { border-color: #4d90fe; } #mode-selector { color: #fff; background-color: #4d90fe; margin-left: 12px; padding: 5px 11px 0px 11px; } #mode-selector label { font-family: Roboto; font-size: 13px; font-weight: 300; }

JavaScript

function initMap() {
        var map = new google.maps.Map(document.getElementById('map'), {
          mapTypeControl: false,
          center: {lat: -33.8688, lng: 151.2195},
          zoom: 13
        });

        new AutocompleteDirectionsHandler(map);
      }

       /**
        * @constructor
       */
      function AutocompleteDirectionsHandler(map) {
        this.map = map;
        this.originPlaceId = null;
        this.destinationPlaceId = null;
        this.travelMode = 'WALKING';
        var originInput = document.getElementById('origin-input');
        var destinationInput = document.getElementById('destination-input');
        var modeSelector = document.getElementById('mode-selector');
        this.directionsService = new google.maps.DirectionsService;
        this.directionsDisplay = new google.maps.DirectionsRenderer;
        this.directionsDisplay.setMap(map);

        var originAutocomplete = new google.maps.places.Autocomplete(
            originInput, {placeIdOnly: true});
        var destinationAutocomplete = new google.maps.places.Autocomplete(
            destinationInput, {placeIdOnly: true});

        this.setupClickListener('changemode-walking', 'WALKING');
        this.setupClickListener('changemode-transit', 'TRANSIT');
        this.setupClickListener('changemode-driving', 'DRIVING');

        this.setupPlaceChangedListener(originAutocomplete, 'ORIG');
        this.setupPlaceChangedListener(destinationAutocomplete, 'DEST');

        this.map.controls[google.maps.ControlPosition.TOP_LEFT].push(originInput);
        this.map.controls[google.maps.ControlPosition.TOP_LEFT].push(destinationInput);
        this.map.controls[google.maps.ControlPosition.TOP_LEFT].push(modeSelector);
      }

      // Sets a listener on a radio button to change the filter type on Places
      // Autocomplete.
      AutocompleteDirectionsHandler.prototype.setupClickListener = function(id, mode) {
        var radioButton = document.getElementById(id);
       ...