88 lines
No EOL
3.2 KiB
TypeScript
88 lines
No EOL
3.2 KiB
TypeScript
import * as L from "leaflet";
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import {UIEventSource} from "../UIEventSource";
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import ScrollableFullScreen from "../../UI/Base/ScrollableFullScreen";
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import FilteredLayer from "../../Models/FilteredLayer";
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import Constants from "../../Models/Constants";
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import BaseUIElement from "../../UI/BaseUIElement";
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/**
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* The stray-click-hanlders adds a marker to the map if no feature was clicked.
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* Shows the given uiToShow-element in the messagebox
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*/
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export default class StrayClickHandler {
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private _lastMarker;
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constructor(
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state: {
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LastClickLocation: UIEventSource<{ lat: number, lon: number }>,
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selectedElement: UIEventSource<string>,
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filteredLayers: UIEventSource<FilteredLayer[]>,
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leafletMap: UIEventSource<L.Map>
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},
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uiToShow: ScrollableFullScreen,
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iconToShow: BaseUIElement) {
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const self = this;
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const leafletMap = state.leafletMap
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state.filteredLayers.data.forEach((filteredLayer) => {
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filteredLayer.isDisplayed.addCallback(isEnabled => {
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if (isEnabled && self._lastMarker && leafletMap.data !== undefined) {
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// When a layer is activated, we remove the 'last click location' in order to force the user to reclick
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// This reclick might be at a location where a feature now appeared...
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state.leafletMap.data.removeLayer(self._lastMarker);
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}
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})
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})
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state.LastClickLocation.addCallback(function (lastClick) {
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if (self._lastMarker !== undefined) {
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state.leafletMap.data?.removeLayer(self._lastMarker);
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}
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if (lastClick === undefined) {
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return;
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}
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state.selectedElement.setData(undefined);
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const clickCoor: [number, number] = [lastClick.lat, lastClick.lon]
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self._lastMarker = L.marker(clickCoor, {
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icon: L.divIcon({
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html: iconToShow.ConstructElement(),
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iconSize: [50, 50],
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iconAnchor: [25, 50],
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popupAnchor: [0, -45]
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})
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});
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const popup = L.popup({
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autoPan: true,
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autoPanPaddingTopLeft: [15, 15],
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closeOnEscapeKey: true,
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autoClose: true
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}).setContent("<div id='strayclick' style='height: 65vh'></div>");
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self._lastMarker.addTo(leafletMap.data);
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self._lastMarker.bindPopup(popup);
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self._lastMarker.on("click", () => {
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if (leafletMap.data.getZoom() < Constants.userJourney.minZoomLevelToAddNewPoints) {
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self._lastMarker.closePopup()
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leafletMap.data.flyTo(clickCoor, Constants.userJourney.minZoomLevelToAddNewPoints)
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return;
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}
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uiToShow.AttachTo("strayclick")
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uiToShow.Activate();
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});
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});
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state.selectedElement.addCallback(() => {
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if (self._lastMarker !== undefined) {
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leafletMap.data.removeLayer(self._lastMarker);
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this._lastMarker = undefined;
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}
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})
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}
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} |