sutty/app/javascript/controllers/geo_controller.js
2020-11-19 20:38:33 -03:00

67 lines
1.6 KiB
JavaScript

import { Controller } from 'stimulus'
require("leaflet/dist/leaflet.css")
import L from 'leaflet'
delete L.Icon.Default.prototype._getIconUrl
L.Icon.Default.mergeOptions({
iconRetinaUrl: require('leaflet/dist/images/marker-icon-2x.png'),
iconUrl: require('leaflet/dist/images/marker-icon.png'),
shadowUrl: require('leaflet/dist/images/marker-shadow.png'),
})
export default class extends Controller {
static targets = [ 'lat', 'lng', 'map' ]
connect () {
this.marker()
this.latTarget.addEventListener('change', event => this.marker())
this.lngTarget.addEventListener('change', event => this.marker())
window.addEventListener('resize', event => this.map.invalidateSize())
this.map.on('click', event => {
this.latTarget.value = event.latlng.lat
this.lngTarget.value = event.latlng.lng
this.latTarget.dispatchEvent(new Event('change'))
})
}
marker () {
if (this._marker) this.map.removeLayer(this._marker)
this._marker = L.marker(this.coords).addTo(this.map)
return this._marker
}
get lat () {
const lat = parseFloat(this.latTarget.value)
return isNaN(lat) ? 0 : lat
}
get lng () {
const lng = parseFloat(this.lngTarget.value)
return isNaN(lng) ? 0 : lng
}
get coords () {
return [this.lat, this.lng]
}
get map () {
if (!this._map) {
this._map = L.map(this.mapTarget).setView(this.coords, 13)
L.tileLayer('https://{s}.tile.openstreetmap.org/{z}/{x}/{y}.png', {
maxZoom: 19,
attribution: '&copy; <a href="https://openstreetmap.org/copyright">OpenStreetMap contributors</a>'
}).addTo(this._map)
}
return this._map
}
}