135 lines
4.2 KiB
TypeScript
135 lines
4.2 KiB
TypeScript
import L from "leaflet";
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import {UIEventSource} from "../../UI/UIEventSource";
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import {UIElement} from "../../UI/UIElement";
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import {Helpers} from "../../Helpers";
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import {State} from "../../State";
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export class GeoLocationHandler extends UIElement {
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private _isActive: UIEventSource<boolean> = new UIEventSource<boolean>(false);
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private _permission: UIEventSource<string> = new UIEventSource<string>("");
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private _marker: any;
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private _hasLocation: UIEventSource<boolean>;
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constructor() {
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super(undefined);
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this._hasLocation = State.state.currentGPSLocation.map((location) => location !== undefined);
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this.ListenTo(this._hasLocation);
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this.ListenTo(this._isActive);
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this.ListenTo(this._permission);
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const self = this;
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function onAccuratePositionProgress(e) {
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console.log(e.accuracy);
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console.log(e.latlng);
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State.state.currentGPSLocation.setData({latlng: e.latlng, accuracy: e.accuracy});
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}
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function onAccuratePositionFound(e) {
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console.log(e.accuracy);
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console.log(e.latlng);
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State.state.currentGPSLocation.setData({latlng: e.latlng, accuracy: e.accuracy});
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}
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function onAccuratePositionError(e) {
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console.log("onerror", e.message);
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}
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const map = State.state.bm.map;
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map.on('accuratepositionprogress', onAccuratePositionProgress);
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map.on('accuratepositionfound', onAccuratePositionFound);
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map.on('accuratepositionerror', onAccuratePositionError);
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const icon = L.icon(
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{
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iconUrl: './assets/crosshair-blue.svg',
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iconSize: [40, 40], // size of the icon
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iconAnchor: [20, 20], // point of the icon which will correspond to marker's location
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})
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State.state.currentGPSLocation.addCallback((location) => {
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const newMarker = L.marker(location.latlng, {icon: icon});
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newMarker.addTo(map.map);
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if (self._marker !== undefined) {
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map.removeLayer(self._marker);
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}
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self._marker = newMarker;
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});
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navigator?.permissions?.query({name: 'geolocation'})
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?.then(function (status) {
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console.log("Geolocation is already", status)
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if (status.state === "granted") {
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self.StartGeolocating();
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}
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self._permission.setData(status.state);
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status.onchange = function () {
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self._permission.setData(status.state);
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}
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});
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this.HideOnEmpty(true);
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}
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InnerRender(): string {
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if (this._hasLocation.data) {
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return "<img src='assets/crosshair-blue.png' alt='locate me'>";
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}
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if (this._isActive.data) {
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return "<img src='assets/crosshair-blue-center.png' alt='locate me'>";
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}
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return "<img src='assets/crosshair.png' alt='locate me'>";
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}
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private StartGeolocating() {
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const self = this;
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const map = State.state.bm.map;
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if (self._permission.data === "denied") {
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return "";
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}
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if (State.state.currentGPSLocation.data !== undefined) {
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map.flyTo(State.state.currentGPSLocation.data.latlng, 18);
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}
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console.log("Searching location using GPS")
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map.findAccuratePosition({
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maxWait: 10000, // defaults to 10000
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desiredAccuracy: 50 // defaults to 20
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});
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if (!self._isActive.data) {
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self._isActive.setData(true);
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Helpers.DoEvery(60000, () => {
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if (document.visibilityState !== "visible") {
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console.log("Not starting gps: document not visible")
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return;
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}
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map.findAccuratePosition({
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maxWait: 10000, // defaults to 10000
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desiredAccuracy: 50 // defaults to 20
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});
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})
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}
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}
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InnerUpdate(htmlElement: HTMLElement) {
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super.InnerUpdate(htmlElement);
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const self = this;
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htmlElement.onclick = function () {
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self.StartGeolocating();
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}
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}
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} |