69 lines
2.5 KiB
TypeScript
69 lines
2.5 KiB
TypeScript
import * as L from "leaflet";
|
|
import {UIElement} from "../../UI/UIElement";
|
|
import Svg from "../../Svg";
|
|
import {UIEventSource} from "../UIEventSource";
|
|
import Img from "../../UI/Base/Img";
|
|
|
|
/**
|
|
* The stray-click-hanlders adds a marker to the map if no feature was clicked.
|
|
* Shows the given uiToShow-element in the messagebox
|
|
*/
|
|
export default class StrayClickHandler {
|
|
private _lastMarker;
|
|
private _uiToShow: (() => UIElement);
|
|
|
|
constructor(
|
|
lastClickLocation: UIEventSource<{ lat: number, lon: number }>,
|
|
selectedElement: UIEventSource<string>,
|
|
filteredLayers: UIEventSource<{ readonly isDisplayed: UIEventSource<boolean> }[]>,
|
|
leafletMap: UIEventSource<L.Map>,
|
|
fullscreenMessage: UIEventSource<UIElement>,
|
|
uiToShow: (() => UIElement)) {
|
|
this._uiToShow = uiToShow;
|
|
const self = this;
|
|
filteredLayers.data.forEach((filteredLayer) => {
|
|
filteredLayer.isDisplayed.addCallback(isEnabled => {
|
|
if (isEnabled && self._lastMarker && leafletMap.data !== undefined) {
|
|
// When a layer is activated, we remove the 'last click location' in order to force the user to reclick
|
|
// This reclick might be at a location where a feature now appeared...
|
|
leafletMap.data.removeLayer(self._lastMarker);
|
|
}
|
|
})
|
|
})
|
|
|
|
lastClickLocation.addCallback(function (lastClick) {
|
|
selectedElement.setData(undefined);
|
|
|
|
if (self._lastMarker !== undefined) {
|
|
leafletMap.data?.removeLayer(self._lastMarker);
|
|
}
|
|
self._lastMarker = L.marker([lastClick.lat, lastClick.lon], {
|
|
icon: L.icon({
|
|
iconUrl: Img.AsData(Svg.add),
|
|
iconSize: [50, 50],
|
|
iconAnchor: [25, 50],
|
|
popupAnchor: [0, -45]
|
|
})
|
|
});
|
|
const uiElement = uiToShow();
|
|
const popup = L.popup().setContent(uiElement.Render());
|
|
self._lastMarker.addTo(leafletMap.data);
|
|
self._lastMarker.bindPopup(popup);
|
|
|
|
self._lastMarker.on("click", () => {
|
|
fullscreenMessage.setData(self._uiToShow());
|
|
uiElement.Update();
|
|
});
|
|
});
|
|
|
|
selectedElement.addCallback(() => {
|
|
if (self._lastMarker !== undefined) {
|
|
leafletMap.data.removeLayer(self._lastMarker);
|
|
this._lastMarker = undefined;
|
|
}
|
|
})
|
|
|
|
}
|
|
|
|
|
|
} |