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Allow picking location on a map #3244
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,125 @@ | ||
| import { | ||
| LitElement, | ||
| property, | ||
| TemplateResult, | ||
| html, | ||
| CSSResult, | ||
| css, | ||
| customElement, | ||
| PropertyValues, | ||
| } from "lit-element"; | ||
| import { Marker, Map, LeafletMouseEvent, DragEndEvent, LatLng } from "leaflet"; | ||
| import { | ||
| setupLeafletMap, | ||
| LeafletModuleType, | ||
| } from "../../common/dom/setup-leaflet-map"; | ||
| import { fireEvent } from "../../common/dom/fire_event"; | ||
|
|
||
| @customElement("ha-location-editor") | ||
| class LocationEditor extends LitElement { | ||
| @property() public location?: [number, number]; | ||
| public fitZoom = 16; | ||
|
|
||
| private _ignoreFitToMap?: [number, number]; | ||
|
|
||
| // tslint:disable-next-line | ||
| private Leaflet?: LeafletModuleType; | ||
| private _leafletMap?: Map; | ||
| private _locationMarker?: Marker; | ||
|
|
||
| public fitMap(): void { | ||
| if (!this._leafletMap || !this.location) { | ||
| return; | ||
| } | ||
| this._leafletMap.setView(this.location, this.fitZoom); | ||
| } | ||
|
|
||
| protected render(): TemplateResult | void { | ||
| return html` | ||
| <div id="map"></div> | ||
| `; | ||
| } | ||
|
|
||
| protected firstUpdated(changedProps: PropertyValues): void { | ||
| super.firstUpdated(changedProps); | ||
| this._initMap(); | ||
| } | ||
|
|
||
| protected updated(changedProps: PropertyValues): void { | ||
| super.updated(changedProps); | ||
|
|
||
| // Still loading. | ||
| if (!this.Leaflet) { | ||
| return; | ||
| } | ||
|
|
||
| this._updateMarker(); | ||
| if (!this._ignoreFitToMap || this._ignoreFitToMap !== this.location) { | ||
| this.fitMap(); | ||
| } | ||
| this._ignoreFitToMap = undefined; | ||
| } | ||
|
|
||
| private get _mapEl(): HTMLDivElement { | ||
| return this.shadowRoot!.querySelector("div")!; | ||
| } | ||
|
|
||
| private async _initMap(): Promise<void> { | ||
| [this._leafletMap, this.Leaflet] = await setupLeafletMap(this._mapEl); | ||
| this._leafletMap.addEventListener( | ||
| "click", | ||
| // @ts-ignore | ||
| (ev: LeafletMouseEvent) => this._updateLocation(ev.latlng) | ||
| ); | ||
| this._updateMarker(); | ||
| this.fitMap(); | ||
| this._leafletMap.invalidateSize(); | ||
| } | ||
|
|
||
| private _updateLocation(latlng: LatLng) { | ||
| this.location = this._ignoreFitToMap = [latlng.lat, latlng.lng]; | ||
| fireEvent(this, "change", undefined, { bubbles: false }); | ||
| } | ||
|
|
||
| private _updateMarker(): void { | ||
| if (!this.location) { | ||
| if (this._locationMarker) { | ||
| this._locationMarker.remove(); | ||
| this._locationMarker = undefined; | ||
| } | ||
| return; | ||
| } | ||
|
|
||
| if (this._locationMarker) { | ||
| this._locationMarker.setLatLng(this.location); | ||
| return; | ||
| } | ||
| this._locationMarker = this.Leaflet!.marker(this.location, { | ||
| draggable: true, | ||
| }); | ||
| this._locationMarker.addEventListener( | ||
| "dragend", | ||
| // @ts-ignore | ||
| (ev: DragEndEvent) => this._updateLocation(ev.target.getLatLng()) | ||
| ); | ||
| this._leafletMap!.addLayer(this._locationMarker); | ||
| } | ||
|
|
||
| static get styles(): CSSResult { | ||
| return css` | ||
| :host { | ||
| display: block; | ||
| height: 300px; | ||
| } | ||
| #map { | ||
| height: 100%; | ||
| } | ||
| `; | ||
| } | ||
| } | ||
|
|
||
| declare global { | ||
| interface HTMLElementTagNameMap { | ||
| "ha-location-editor": LocationEditor; | ||
| } | ||
| } |
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