js/map.js
( function ( $, document, window, google, rwmb, i18n ) {
'use strict';
// Use function construction to store map & DOM elements separately for each instance
var MapField = function ( $container ) {
this.$container = $container;
};
// Geocoder service.
var geocoder = new google.maps.Geocoder();
// Autocomplete Service.
var autocomplete = new google.maps.places.AutocompleteService();
// Use prototype for better performance
MapField.prototype = {
// Initialize everything
init: function () {
this.initDomElements();
this.initMapElements();
this.initMarkerPosition();
this.addListeners();
this.autocomplete();
},
// Initialize DOM elements
initDomElements: function () {
this.$canvas = this.$container.find( '.rwmb-map-canvas' );
this.canvas = this.$canvas[ 0 ];
this.$coordinate = this.$container.find( '.rwmb-map' );
this.addressField = this.$container.data( 'address-field' );
},
setCenter: function ( location ) {
if ( !( location instanceof google.maps.LatLng ) ) {
location = new google.maps.LatLng( parseFloat( location.lat ), parseFloat( location.lng ) );
}
this.map.setCenter( location );
if ( this.marker ) {
this.marker.setPosition( location );
return;
}
this.marker = new google.maps.Marker( {
position: location,
map: this.map,
draggable: true,
} );
},
initMapElements: function () {
this.map = new google.maps.Map( this.canvas, {
zoom: 14,
streetViewControl: 0,
mapTypeId: google.maps.MapTypeId.ROADMAP
} );
// If there is a saved location, don't set the default location.
if ( this.$coordinate.val() ) {
return;
}
// Load default location if it's set.
let defaultLoc = this.$canvas.data( 'default-loc' );
if ( defaultLoc ) {
const [ lat, lng ] = defaultLoc.split( ',' );
return this.setCenter( { lat, lng } );
}
// Set default location to Dublin as a start.
const dublin = { lat: 53.346881, lng: -6.258860 };
this.setCenter( dublin );
// Try to load current user location. Note that Geolocation API works only on HTTPS.
if ( location.protocol.includes( 'https' ) && navigator.geolocation ) {
navigator.geolocation.getCurrentPosition( position => this.setCenter( { lat: position.coords.latitude, lng: position.coords.longitude } ) );
}
},
initMarkerPosition: function () {
const coordinate = this.$coordinate.val();
if ( coordinate ) {
const location = coordinate.split( ',' );
this.setCenter( { lat: location[ 0 ], lng: location[ 1 ] } );
const zoom = location.length > 2 ? parseInt( location[ 2 ], 10 ) : 14;
this.map.setZoom( zoom );
} else if ( this.addressField ) {
this.geocodeAddress( false );
}
},
// Add event listeners for 'click' & 'drag'
addListeners: function () {
var that = this;
/*
* Auto change the map when there's change in address fields.
* Works only for multiple address fields as single address field has autocomplete functionality.
*/
if ( this.addressField.split( ',' ).length > 1 ) {
var geocodeAddress = that.geocodeAddress.bind( that );
var addressFields = this.addressField.split( ',' ).forEach( function ( part ) {
var $field = that.findAddressField( part );
if ( null !== $field ) {
$field.on( 'change', geocodeAddress );
}
} );
}
google.maps.event.addListener( this.map, 'click', function ( event ) {
that.marker.setPosition( event.latLng );
that.updateCoordinate( event.latLng );
} );
google.maps.event.addListener( this.map, 'zoom_changed', function ( event ) {
that.updateCoordinate( that.marker.getPosition() );
} );
google.maps.event.addListener( this.marker, 'drag', function ( event ) {
that.updateCoordinate( event.latLng );
} );
/**
* Custom event to refresh maps when in hidden divs.
* @see https://developers.google.com/maps/documentation/javascript/reference ('resize' Event)
*/
var refresh = that.refresh.bind( this );
$( window ).on( 'rwmb_map_refresh', refresh );
// Refresh on meta box hide and show
rwmb.$document.on( 'postbox-toggled', refresh );
// Refresh on sorting meta boxes
$( '.meta-box-sortables' ).on( 'sortstop', refresh );
},
refresh: function () {
if ( !this.map ) {
return;
}
var zoom = this.map.getZoom(),
center = this.map.getCenter();
google.maps.event.trigger( this.map, 'resize' );
this.map.setZoom( zoom );
this.map.panTo( center );
},
// Autocomplete address
autocomplete: function () {
var that = this,
$address = this.getAddressField();
if ( null === $address ) {
return;
}
// If Meta Box Geo Location installed. Do not run autocomplete.
if ( $( '.rwmb-geo-binding' ).length ) {
var geocodeAddress = that.geocodeAddress.bind( that );
$address.on( 'selected_address', geocodeAddress );
return false;
}
$address.autocomplete( {
source: function ( request, response ) {
// if add region only search in that region
var options = {
'input': request.term,
'componentRestrictions': { country: that.$canvas.data( 'region' ) }
};
// Change Geocode to getPlacePredictions .
autocomplete.getPlacePredictions( options, function ( results ) {
if ( results == null || !results.length ) {
response( [ {
value: '',
label: i18n.no_results_string
} ] );
return;
}
response( results.map( function ( item ) {
return {
label: item.description,
value: item.description,
placeid: item.place_id,
};
} ) );
} );
},
select: function ( event, ui ) {
geocoder.geocode( {
'placeId': ui.item.placeid
},
function ( responses, status ) {
if ( status == 'OK' ) {
const latLng = new google.maps.LatLng( responses[ 0 ].geometry.location.lat(), responses[ 0 ].geometry.location.lng() );
that.setCenter( latLng );
that.updateCoordinate( latLng );
}
} );
}
} );
},
// Update coordinate to input field
updateCoordinate: function ( latLng ) {
var zoom = this.map.getZoom();
this.$coordinate.val( latLng.lat() + ',' + latLng.lng() + ',' + zoom ).trigger( 'change' );
},
// Find coordinates by address
geocodeAddress: function ( notify ) {
var address = this.getAddress(),
that = this;
if ( !address ) {
return;
}
if ( false !== notify ) {
notify = true;
}
geocoder.geocode( { 'address': address }, function ( results, status ) {
if ( status !== google.maps.GeocoderStatus.OK ) {
if ( notify ) {
alert( i18n.no_results_string );
}
return;
}
that.setCenter( results[ 0 ].geometry.location );
that.updateCoordinate( results[ 0 ].geometry.location );
} );
},
// Get the address field.
getAddressField: function () {
// No address field or more than 1 address fields, ignore
if ( !this.addressField || this.addressField.split( ',' ).length > 1 ) {
return null;
}
return this.findAddressField( this.addressField );
},
// Get the address value for geocoding.
getAddress: function () {
var that = this;
return this.addressField.split( ',' )
.map( function ( part ) {
part = that.findAddressField( part );
return null === part ? '' : part.val();
} )
.join( ',' ).replace( /\n/g, ',' ).replace( /,,/g, ',' );
},
// Find address field based on its name attribute. Auto search inside groups when needed.
findAddressField: function ( fieldName ) {
// Not in a group.
var $address = $( 'input[name="' + fieldName + '"]' );
if ( $address.length ) {
return $address;
}
// If map and address is inside a cloneable group.
$address = this.$container.closest( '.rwmb-group-clone' ).find( 'input[name*="[' + fieldName + ']"]' );
if ( $address.length ) {
return $address;
}
// If map and address is inside a non-cloneable group.
$address = this.$container.closest( '.rwmb-group-wrapper' ).find( 'input[name*="[' + fieldName + ']"]' );
if ( $address.length ) {
return $address;
}
return null;
}
};
function createController() {
var $this = $( this ),
controller = $this.data( 'mapController' );
if ( controller ) {
return;
}
controller = new MapField( $this );
controller.init();
$this.data( 'mapController', controller );
}
function init( e ) {
$( e.target ).find( '.rwmb-map-field' ).each( createController );
}
function restart() {
$( '.rwmb-map-field' ).each( createController );
}
rwmb.$document
.on( 'mb_ready', init )
.on( 'clone', '.rwmb-input', restart );
} )( jQuery, document, window, google, rwmb, RWMB_Map );