forked from MapComplete/MapComplete
56 lines
1.7 KiB
TypeScript
56 lines
1.7 KiB
TypeScript
import { FeatureSource , FeatureSourceForLayer, Tiled } from "../FeatureSource"
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import { ImmutableStore, Store } from "../../UIEventSource"
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import FilteredLayer from "../../../Models/FilteredLayer"
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import { BBox } from "../../BBox"
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import { Feature } from "geojson"
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/**
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* A simple, read only feature store.
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*/
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export default class StaticFeatureSource implements FeatureSource {
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public readonly features: Store<Feature[]>
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constructor(
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features:
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| Store<Feature[]>
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| Feature[]
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| { features: Feature[] }
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| { features: Store<Feature[]> }
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) {
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if (features === undefined) {
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throw "Static feature source received undefined as source"
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}
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let feats: Feature[] | Store<Feature[]>
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if (features["features"]) {
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feats = features["features"]
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} else {
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feats = <Feature[] | Store<Feature[]>>features
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}
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if (Array.isArray(feats)) {
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this.features = new ImmutableStore(feats)
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} else {
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this.features = feats
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}
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}
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public static fromGeojson(geojson: Feature[]): StaticFeatureSource {
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return new StaticFeatureSource(geojson)
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}
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}
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export class TiledStaticFeatureSource
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extends StaticFeatureSource
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implements Tiled, FeatureSourceForLayer
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{
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public readonly bbox: BBox = BBox.global
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public readonly tileIndex: number
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public readonly layer: FilteredLayer
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constructor(features: Store<Feature[]>, layer: FilteredLayer, tileIndex: number = 0) {
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super(features)
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this.tileIndex = tileIndex
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this.layer = layer
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this.bbox = BBox.fromTileIndex(this.tileIndex)
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}
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}
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