201 lines
No EOL
7 KiB
TypeScript
201 lines
No EOL
7 KiB
TypeScript
/**
|
|
* The data layer shows all the given geojson elements with the appropriate icon etc
|
|
*/
|
|
import {UIEventSource} from "../../Logic/UIEventSource";
|
|
import LayerConfig from "../../Models/ThemeConfig/LayerConfig";
|
|
import FeatureInfoBox from "../Popup/FeatureInfoBox";
|
|
import State from "../../State";
|
|
import {ShowDataLayerOptions} from "./ShowDataLayerOptions";
|
|
|
|
export default class ShowDataLayer {
|
|
|
|
private readonly _leafletMap: UIEventSource<L.Map>;
|
|
private readonly _enablePopups: boolean;
|
|
private readonly _features: UIEventSource<{ feature: any }[]>
|
|
private readonly _layerToShow: LayerConfig;
|
|
|
|
// Used to generate a fresh ID when needed
|
|
private _cleanCount = 0;
|
|
|
|
constructor(options: ShowDataLayerOptions & { layerToShow: LayerConfig}) {
|
|
this._leafletMap = options.leafletMap;
|
|
this._enablePopups = options.enablePopups ?? true;
|
|
if(options.features === undefined){
|
|
throw "Invalid ShowDataLayer invocation"
|
|
}
|
|
const features = options.features.features.map(featFreshes => featFreshes.map(ff => ff.feature));
|
|
this._features = features;
|
|
this._layerToShow = options.layerToShow;
|
|
const self = this;
|
|
|
|
let geoLayer = undefined;
|
|
|
|
function update() {
|
|
if (features.data === undefined) {
|
|
return;
|
|
}
|
|
const mp =options. leafletMap.data;
|
|
|
|
if (mp === undefined) {
|
|
return;
|
|
}
|
|
|
|
self._cleanCount++
|
|
// clean all the old stuff away, if any
|
|
if (geoLayer !== undefined) {
|
|
mp.removeLayer(geoLayer);
|
|
}
|
|
|
|
const allFeats = features.data;
|
|
geoLayer = self.CreateGeojsonLayer();
|
|
for (const feat of allFeats) {
|
|
if (feat === undefined) {
|
|
continue
|
|
}
|
|
// @ts-ignore
|
|
geoLayer.addData(feat);
|
|
}
|
|
|
|
mp.addLayer(geoLayer)
|
|
|
|
if (options.zoomToFeatures ?? false) {
|
|
try {
|
|
mp.fitBounds(geoLayer.getBounds(), {animate: false})
|
|
} catch (e) {
|
|
console.error(e)
|
|
}
|
|
}
|
|
if (self._enablePopups) {
|
|
State.state.selectedElement.ping()
|
|
}
|
|
}
|
|
|
|
features.addCallback(() => update());
|
|
options.leafletMap.addCallback(() => update());
|
|
update();
|
|
}
|
|
|
|
|
|
private createStyleFor(feature) {
|
|
const tagsSource = State.state.allElements.addOrGetElement(feature);
|
|
// Every object is tied to exactly one layer
|
|
const layer = this._layerToShow
|
|
return layer?.GenerateLeafletStyle(tagsSource, true);
|
|
}
|
|
|
|
private pointToLayer(feature, latLng): L.Layer {
|
|
// Leaflet cannot handle geojson points natively
|
|
// We have to convert them to the appropriate icon
|
|
// Click handling is done in the next step
|
|
|
|
const layer: LayerConfig = this._layerToShow
|
|
if (layer === undefined) {
|
|
return;
|
|
}
|
|
|
|
const tagSource = feature.properties.id === undefined ? new UIEventSource<any>(feature.properties) : State.state.allElements.getEventSourceById(feature.properties.id)
|
|
const style = layer.GenerateLeafletStyle(tagSource, !(layer.title === undefined && (layer.tagRenderings ?? []).length === 0));
|
|
const baseElement = style.icon.html;
|
|
if (!this._enablePopups) {
|
|
baseElement.SetStyle("cursor: initial !important")
|
|
}
|
|
return L.marker(latLng, {
|
|
icon: L.divIcon({
|
|
html: baseElement.ConstructElement(),
|
|
className: style.icon.className,
|
|
iconAnchor: style.icon.iconAnchor,
|
|
iconUrl: style.icon.iconUrl,
|
|
popupAnchor: style.icon.popupAnchor,
|
|
iconSize: style.icon.iconSize
|
|
})
|
|
});
|
|
}
|
|
|
|
/**
|
|
* POst processing - basically adding the popup
|
|
* @param feature
|
|
* @param leafletLayer
|
|
* @private
|
|
*/
|
|
private postProcessFeature(feature, leafletLayer: L.Layer) {
|
|
const layer: LayerConfig = this._layerToShow
|
|
if (layer.title === undefined || !this._enablePopups) {
|
|
// No popup action defined -> Don't do anything
|
|
// or probably a map in the popup - no popups needed!
|
|
return;
|
|
}
|
|
|
|
const popup = L.popup({
|
|
autoPan: true,
|
|
closeOnEscapeKey: true,
|
|
closeButton: false,
|
|
autoPanPaddingTopLeft: [15, 15],
|
|
|
|
}, leafletLayer);
|
|
|
|
leafletLayer.bindPopup(popup);
|
|
|
|
let infobox: FeatureInfoBox = undefined;
|
|
|
|
const id = `popup-${feature.properties.id}-${this._cleanCount}`
|
|
popup.setContent(`<div style='height: 65vh' id='${id}'>Rendering</div>`)
|
|
|
|
leafletLayer.on("popupopen", () => {
|
|
State.state.selectedElement.setData(feature)
|
|
|
|
if (infobox === undefined) {
|
|
const tags = State.state.allElements.getEventSourceById(feature.properties.id);
|
|
infobox = new FeatureInfoBox(tags, layer);
|
|
|
|
infobox.isShown.addCallback(isShown => {
|
|
if (!isShown) {
|
|
State.state.selectedElement.setData(undefined);
|
|
leafletLayer.closePopup()
|
|
}
|
|
});
|
|
}
|
|
|
|
|
|
infobox.AttachTo(id)
|
|
infobox.Activate();
|
|
});
|
|
const self = this;
|
|
State.state.selectedElement.addCallbackAndRunD(selected => {
|
|
if (self._leafletMap.data === undefined) {
|
|
return;
|
|
}
|
|
if (leafletLayer.getPopup().isOpen()) {
|
|
return;
|
|
}
|
|
if (selected.properties.id === feature.properties.id) {
|
|
// A small sanity check to prevent infinite loops:
|
|
if (selected.geometry.type === feature.geometry.type // If a feature is rendered both as way and as point, opening one popup might trigger the other to open, which might trigger the one to open again
|
|
&& feature.id === feature.properties.id // the feature might have as id 'node/-1' and as 'feature.properties.id' = 'the newly assigned id'. That is no good too
|
|
) {
|
|
leafletLayer.openPopup()
|
|
}
|
|
if (feature.id !== feature.properties.id) {
|
|
console.trace("Not opening the popup for", feature)
|
|
}
|
|
|
|
}
|
|
})
|
|
|
|
}
|
|
|
|
private CreateGeojsonLayer(): L.Layer {
|
|
const self = this;
|
|
const data = {
|
|
type: "FeatureCollection",
|
|
features: []
|
|
}
|
|
// @ts-ignore
|
|
return L.geoJSON(data, {
|
|
style: feature => self.createStyleFor(feature),
|
|
pointToLayer: (feature, latLng) => self.pointToLayer(feature, latLng),
|
|
onEachFeature: (feature, leafletLayer) => self.postProcessFeature(feature, leafletLayer)
|
|
});
|
|
|
|
}
|
|
|
|
} |