mapcomplete/Logic/FeatureSource/FeaturePipeline.ts

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import FilteringFeatureSource from "../FeatureSource/FilteringFeatureSource";
import FeatureSourceMerger from "../FeatureSource/FeatureSourceMerger";
import RememberingSource from "../FeatureSource/RememberingSource";
import WayHandlingApplyingFeatureSource from "../FeatureSource/WayHandlingApplyingFeatureSource";
import NoOverlapSource from "../FeatureSource/NoOverlapSource";
import FeatureDuplicatorPerLayer from "../FeatureSource/FeatureDuplicatorPerLayer";
import FeatureSource from "../FeatureSource/FeatureSource";
import {UIEventSource} from "../UIEventSource";
import LocalStorageSaver from "./LocalStorageSaver";
import LayerConfig from "../../Customizations/JSON/LayerConfig";
import LocalStorageSource from "./LocalStorageSource";
import LayoutConfig from "../../Customizations/JSON/LayoutConfig";
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import Loc from "../../Models/Loc";
import GeoJsonSource from "./GeoJsonSource";
import MetaTaggingFeatureSource from "./MetaTaggingFeatureSource";
export default class FeaturePipeline implements FeatureSource {
public features: UIEventSource<{ feature: any; freshness: Date }[]>;
constructor(flayers: UIEventSource<{ isDisplayed: UIEventSource<boolean>, layerDef: LayerConfig }[]>,
updater: FeatureSource,
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layout: UIEventSource<LayoutConfig>,
newPoints: FeatureSource,
locationControl: UIEventSource<Loc>) {
const amendedOverpassSource =
new RememberingSource(
new NoOverlapSource(flayers, new FeatureDuplicatorPerLayer(flayers,
new LocalStorageSaver(updater, layout)))
);
const geojsonSources: GeoJsonSource [] = []
for (const flayer of flayers.data) {
const sourceUrl = flayer.layerDef.source.geojsonSource
if (sourceUrl !== undefined) {
geojsonSources.push(
new GeoJsonSource(flayer.layerDef.id, sourceUrl))
}
}
const amendedLocalStorageSource =
new RememberingSource(
new NoOverlapSource(flayers, new FeatureDuplicatorPerLayer(flayers, new LocalStorageSource(layout)))
);
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newPoints = new FeatureDuplicatorPerLayer(flayers, newPoints);
const merged =
new MetaTaggingFeatureSource(
new FeatureSourceMerger([
amendedOverpassSource,
amendedLocalStorageSource,
newPoints,
...geojsonSources
]));
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const source =
new WayHandlingApplyingFeatureSource(flayers,
new FilteringFeatureSource(
flayers,
locationControl,
merged
));
this.features = source.features;
}
}