google-map-search.html
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<!-- Copyright (c) 2015 Google Inc. All rights reserved. -->
<link rel="import" href="../polymer/polymer.html">
<!--
`google-map-search` provides Google Maps Places API functionality.
See https://developers.google.com/maps/documentation/javascript/places for more
information on the API.
#### Example:
<template is="dom-bind">
<google-map-search map="[[map]]" query="Pizza"
results="{{results}}"></google-map-search>
<google-map map="{{map}}" latitude="37.779"
longitude="-122.3892">
<template is="dom-repeat" items="{{results}}" as="marker">
<google-map-marker latitude="{{marker.latitude}}"
longitude="{{marker.longitude}}">
<h2>{{marker.name}}</h2>
<span>{{marker.formatted_address}}</span>
</google-map-marker>
</template>
</google-map>
</template>
-->
<script>
Polymer({
is: 'google-map-search',
properties: {
/**
* The Google map object.
*/
map: {
type: Object,
value: null
},
/**
* The search query.
*/
query: {
type: String,
value: null
},
/**
* Latitude of the center of the search area.
* Ignored if `globalSearch` is true.
*/
latitude: {
type: Number,
value: null
},
/**
* Longitude of the center of the search area.
* Ignored if `globalSearch` is true.
*/
longitude: {
type: Number,
value: null
},
/**
* Search radius, in meters.
* If `latitude` and `longitude` are not specified,
* the center of the currently visible map area is used.
*
* If not set, search will be restricted to the currently visible
* map area, unless `globalSearch` is set to true.
*/
radius: {
type: Number,
value: null
},
/**
* By default, search is restricted to the currently visible map area.
* Set this to true to search everywhere.
*
* Ignored if `radius` is set.
*/
globalSearch: {
type: Boolean,
value: false
},
/**
* Space-separated list of result types.
* The search will only return results of the listed types.
* See https://developers.google.com/places/documentation/supported_types
* for a list of supported types.
* Leave empty or null to search for all result types.
*/
types: {
type: String,
value: null
},
/**
* The search results.
*/
results: {
type: Array,
value: function() { return []; },
notify: true
},
/**
* The lat/lng location.
*/
location: {
type: Object,
value: null,
readyOnly: true
}
},
observers: [
'search(query,map,location,radius,types,globalSearch)',
'_updateLocation(latitude,longitude)'
],
/**
* Fired when the search element returns a result.
*
* @event google-map-search-results
* @param {Array} detail An array of search results
* @param {number} detail.latitude Latitude of the result.
* @param {number} detail.longitude Longitude of the result.
* @param {bool} detail.show Whether to show the result on the map.
*/
/**
* Perform a search using for `query` for the search term.
*/
search: function() {
if (this.query && this.map) {
var places = new google.maps.places.PlacesService(this.map);
if (this.types && typeof this.types == 'string') {
var types = this.types.split(' ');
}
if (!this.globalSearch) {
var bounds = this.map.getBounds();
} else if (this.radius) {
var radius = this.radius;
var location = this.location ? this.location : this.map.getCenter();
}
places.textSearch({
query: this.query,
types: types,
bounds: bounds,
radius: radius,
location: location
}, this._gotResults.bind(this));
}
},
_gotResults: function(results, status) {
this.results = results.map(function(result) {
// obtain lat/long from geometry
result.latitude = result.geometry.location.lat();
result.longitude = result.geometry.location.lng();
return result;
});
this.fire('google-map-search-results', this.results);
},
_updateLocation: function() {
if (!this.map) {
return;
} else if (typeof this.latitude !== 'number' || isNaN(this.latitude)) {
throw new TypeError('latitude must be a number');
} else if (typeof this.longitude !== 'number' || isNaN(this.longitude)) {
throw new TypeError('longitude must be a number');
}
// Update location. This will trigger a new search.
this._setLocation({lat: this.latitude, lng: this.longitude});
}
});
</script>