Locator
'use strict';
/** Helper function to generate a Google Maps directions URL */
function generateDirectionsURL(origin, destination) {
const googleMapsUrlBase = 'https://www.google.com/maps/dir/?';
const searchParams = new URLSearchParams('api=1');
searchParams.append('origin', origin);
const destinationParam = [];
// Add title to destinationParam except in cases where Quick Builder set
// the title to the first line of the address
if (destination.title !== destination.address1) {
destinationParam.push(destination.title);
}
destinationParam.push(destination.address1, destination.address2);
searchParams.append('destination', destinationParam.join(','));
return googleMapsUrlBase + searchParams.toString();
}
/**
* Defines an instance of the Locator+ solution, to be instantiated
* when the Maps library is loaded.
*/
function LocatorPlus(configuration) {
const locator = this;
locator.locations = configuration.locations || [];
locator.capabilities = configuration.capabilities || {};
const mapEl = document.getElementById('gmp-map');
const panelEl = document.getElementById('locations-panel');
locator.panelListEl = document.getElementById('locations-panel-list');
const sectionNameEl =
document.getElementById('location-results-section-name');
const resultsContainerEl = document.getElementById('location-results-list');
const itemsTemplate = Handlebars.compile(
document.getElementById('locator-result-items-tmpl').innerHTML);
locator.searchLocation = null;
locator.searchLocationMarker = null;
locator.selectedLocationIdx = null;
locator.userCountry = null;
// Initialize the map -------------------------------------------------------
locator.map = new google.maps.Map(mapEl, configuration.mapOptions);
// Store selection.
const selectResultItem = function(locationIdx, panToMarker, scrollToResult) {
locator.selectedLocationIdx = locationIdx;
for (let locationElem of resultsContainerEl.children) {
locationElem.classList.remove('selected');
if (getResultIndex(locationElem) === locator.selectedLocationIdx) {
locationElem.classList.add('selected');
if (scrollToResult) {
panelEl.scrollTop = locationElem.offsetTop;
}
}
}
if (panToMarker && (locationIdx != null)) {
locator.map.panTo(locator.locations[locationIdx].coords);
}
};
// Create a marker for each location.
const markers = locator.locations.map(function(location, index) {
const marker = new google.maps.Marker({
position: location.coords,
map: locator.map,
title: location.title,
});
marker.addListener('click', function() {
selectResultItem(index, false, true);
});
return marker;
});
// Fit map to marker bounds.
locator.updateBounds = function() {
const bounds = new google.maps.LatLngBounds();
if (locator.searchLocationMarker) {
bounds.extend(locator.searchLocationMarker.getPosition());
}
for (let i = 0; i < markers.length; i++) {
bounds.extend(markers[i].getPosition());
}
locator.map.fitBounds(bounds);
};
if (locator.locations.length) {
locator.updateBounds();
}
// Get the distance of a store location to the user's location,
// used in sorting the list.
const getLocationDistance = function(location) {
if (!locator.searchLocation) return null;
// Use travel distance if available (from Distance Matrix).
if (location.travelDistanceValue != null) {
return location.travelDistanceValue;
}
// Fall back to straight-line distance.
return google.maps.geometry.spherical.computeDistanceBetween(
new google.maps.LatLng(location.coords),
locator.searchLocation.location);
};
// Render the results list --------------------------------------------------
const getResultIndex = function(elem) {
return parseInt(elem.getAttribute('data-location-index'));
};
locator.renderResultsList = function() {
let locations = locator.locations.slice();
for (let i = 0; i < locations.length; i++) {
locations[i].index = i;
}
if (locator.searchLocation) {
sectionNameEl.textContent =
'Nearest locations (' + locations.length + ')';
locations.sort(function(a, b) {
return getLocationDistance(a) - getLocationDistance(b);
});
} else {
sectionNameEl.textContent = `All locations (${locations.length})`;
}
const resultItemContext = {locations: locations};
resultsContainerEl.innerHTML = itemsTemplate(resultItemContext);
for (let item of resultsContainerEl.children) {
const resultIndex = getResultIndex(item);
if (resultIndex === locator.selectedLocationIdx) {
item.classList.add('selected');
}
const resultSelectionHandler = function() {
if (resultIndex !== locator.selectedLocationIdx) {
selectResultItem(resultIndex, true, false);
}
};
// Clicking anywhere on the item selects this location.
// Additionally, create a button element to make this behavior
// accessible under tab navigation.
item.addEventListener('click', resultSelectionHandler);
item.querySelector('.select-location')
.addEventListener('click', function(e) {
resultSelectionHandler();
e.stopPropagation();
});
// Clicking the directions button will open Google Maps directions in a
// new tab
const origin = (locator.searchLocation != null) ?
locator.searchLocation.location :
'';
const destination = locator.locations[resultIndex];
const googleMapsUrl = generateDirectionsURL(origin, destination);
item.querySelector('.directions-button')
.setAttribute('href', googleMapsUrl);
}
};
// Optional capability initialization --------------------------------------
initializeSearchInput(locator);
initializeDistanceMatrix(locator);
// Initial render of results -----------------------------------------------
locator.renderResultsList();
}
/** When the search input capability is enabled, initialize it. */
function initializeSearchInput(locator) {
const geocodeCache = new Map();
const geocoder = new google.maps.Geocoder();
const searchInputEl = document.getElementById('location-search-input');
const searchButtonEl = document.getElementById('location-search-button');
const updateSearchLocation = function(address, location) {
if (locator.searchLocationMarker) {
locator.searchLocationMarker.setMap(null);
}
if (!location) {
locator.searchLocation = null;
return;
}
locator.searchLocation = {'address': address, 'location': location};
locator.searchLocationMarker = new google.maps.Marker({
position: location,
map: locator.map,
title: 'My location',
icon: {
path: google.maps.SymbolPath.CIRCLE,
scale: 12,
fillColor: '#3367D6',
fillOpacity: 0.5,
strokeOpacity: 0,
}
});
// Update the locator's idea of the user's country, used for units. Use
// `formatted_address` instead of the more structured `address_components`
// to avoid an additional billed call.
const addressParts = address.split(' ');
locator.userCountry = addressParts[addressParts.length - 1];
// Update map bounds to include the new location marker.
locator.updateBounds();
// Update the result list so we can sort it by proximity.
locator.renderResultsList();
locator.updateTravelTimes();
};
const geocodeSearch = function(query) {
if (!query) {
return;
}
const handleResult = function(geocodeResult) {
searchInputEl.value = geocodeResult.formatted_address;
updateSearchLocation(
geocodeResult.formatted_address, geocodeResult.geometry.location);
};
if (geocodeCache.has(query)) {
handleResult(geocodeCache.get(query));
return;
}
const request = {address: query, bounds: locator.map.getBounds()};
geocoder.geocode(request, function(results, status) {
if (status === 'OK') {
if (results.length > 0) {
const result = results[0];
geocodeCache.set(query, result);
handleResult(result);
}
}
});
};
// Set up geocoding on the search input.
searchButtonEl.addEventListener('click', function() {
geocodeSearch(searchInputEl.value.trim());
});
// Initialize Autocomplete.
initializeSearchInputAutocomplete(
locator, searchInputEl, geocodeSearch, updateSearchLocation);
}
/** Add Autocomplete to the search input. */
function initializeSearchInputAutocomplete(
locator, searchInputEl, fallbackSearch, searchLocationUpdater) {
// Set up Autocomplete on the search input. Bias results to map viewport.
const autocomplete = new google.maps.places.Autocomplete(searchInputEl, {
types: ['geocode'],
fields: ['place_id', 'formatted_address', 'geometry.location']
});
autocomplete.bindTo('bounds', locator.map);
autocomplete.addListener('place_changed', function() {
const placeResult = autocomplete.getPlace();
if (!placeResult.geometry) {
// Hitting 'Enter' without selecting a suggestion will result in a
// placeResult with only the text input value as the 'name' field.
fallbackSearch(placeResult.name);
return;
}
searchLocationUpdater(
placeResult.formatted_address, placeResult.geometry.location);
});
}
/** Initialize Distance Matrix for the locator. */
function initializeDistanceMatrix(locator) {
const distanceMatrixService = new google.maps.DistanceMatrixService();
// Annotate travel times to the selected location using Distance Matrix.
locator.updateTravelTimes = function() {
if (!locator.searchLocation) return;
const units = (locator.userCountry === 'USA') ?
google.maps.UnitSystem.IMPERIAL :
google.maps.UnitSystem.METRIC;
const request = {
origins: [locator.searchLocation.location],
destinations: locator.locations.map(function(x) {
return x.coords;
}),
travelMode: google.maps.TravelMode.DRIVING,
unitSystem: units,
};
const callback = function(response, status) {
if (status === 'OK') {
const distances = response.rows[0].elements;
for (let i = 0; i < distances.length; i++) {
const distResult = distances[i];
let travelDistanceText, travelDistanceValue;
if (distResult.status === 'OK') {
travelDistanceText = distResult.distance.text;
travelDistanceValue = distResult.distance.value;
}
const location = locator.locations[i];
location.travelDistanceText = travelDistanceText;
location.travelDistanceValue = travelDistanceValue;
}
// Re-render the results list, in case the ordering has changed.
locator.renderResultsList();
}
};
distanceMatrixService.getDistanceMatrix(request, callback);
};
}
const CONFIGURATION = {
"locations": [
{"title":"Rua Rio de Janeiro","address1":"R. Rio de Janeiro - Res. Jardim Canedo I","address2":"Sen. Canedo - GO, 75250-141, Brasil","coords":{"lat":-16.70160840734771,"lng":-49.10695703690948},"placeId":"Ek1SLiBSaW8gZGUgSmFuZWlybyAtIFJlcy4gSmFyZGltIENhbmVkbyBJLCBTZW4uIENhbmVkbyAtIEdPLCA3NTI1MC0xNDEsIEJyYXppbCIuKiwKFAoSCZVjKxu86F6TEZVctp1nZDHcEhQKEgl36SB5x-hekxGrNbRdMWK8RA"}
],
"mapOptions": {"center":{"lat":38.0,"lng":-100.0},"fullscreenControl":true,"mapTypeControl":false,"streetViewControl":false,"zoom":4,"zoomControl":true,"maxZoom":17,"mapId":""},
"mapsApiKey": "YOUR_API_KEY_HERE",
"capabilities": {"input":true,"autocomplete":true,"directions":false,"distanceMatrix":true,"details":false,"actions":false}
};
function initMap() {
new LocatorPlus(CONFIGURATION);
}
{{#each locations}}
{{title}}
{{address1}}
{{address2}}
{{#if travelDistanceText}}
{{travelDistanceText}}
{{/if}}
{{/each}}
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