62 lines
2.5 KiB
TypeScript
62 lines
2.5 KiB
TypeScript
import FeatureSource from "./FeatureSource";
|
|
import {UIEventSource} from "../UIEventSource";
|
|
import LayerConfig from "../../Customizations/JSON/LayerConfig";
|
|
|
|
|
|
/**
|
|
* In some rare cases, some elements are shown on multiple layers (when 'passthrough' is enabled)
|
|
* If this is the case, multiple objects with a different _matching_layer_id are generated.
|
|
* In any case, this featureSource marks the objects with _matching_layer_id
|
|
*/
|
|
export default class FeatureDuplicatorPerLayer implements FeatureSource {
|
|
public readonly features: UIEventSource<{ feature: any; freshness: Date }[]>;
|
|
|
|
|
|
constructor(layers: UIEventSource<{ layerDef: LayerConfig }[]>, upstream: FeatureSource) {
|
|
this.features = upstream.features.map(features => {
|
|
const newFeatures: { feature: any, freshness: Date }[] = [];
|
|
if(features === undefined){
|
|
return newFeatures;
|
|
}
|
|
|
|
for (const f of features) {
|
|
if (f.feature._matching_layer_id) {
|
|
// Already matched previously
|
|
// We simply add it
|
|
newFeatures.push(f);
|
|
continue;
|
|
}
|
|
|
|
|
|
let foundALayer = false;
|
|
for (const layer of layers.data) {
|
|
if (layer.layerDef.source.osmTags.matchesProperties(f.feature.properties)) {
|
|
foundALayer = true;
|
|
if (layer.layerDef.passAllFeatures) {
|
|
|
|
// We copy the feature; the "properties" field is kept identical though!
|
|
// Keeping "properties" identical is needed, as it might break the 'allElementStorage' otherwise
|
|
const newFeature = {
|
|
geometry: f.feature.geometry,
|
|
id: f.feature.id,
|
|
type: f.feature.type,
|
|
properties: f.feature.properties,
|
|
_matching_layer_id : layer.layerDef.id
|
|
}
|
|
newFeatures.push({feature: newFeature, freshness: f.freshness});
|
|
} else {
|
|
// If not 'passAllFeatures', we are done
|
|
f.feature._matching_layer_id = layer.layerDef.id;
|
|
newFeatures.push(f);
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
return newFeatures;
|
|
|
|
})
|
|
|
|
}
|
|
|
|
} |