forked from MapComplete/MapComplete
43 lines
1.5 KiB
TypeScript
43 lines
1.5 KiB
TypeScript
import DynamicTileSource from "./DynamicTileSource"
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import {Store} from "../../UIEventSource"
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import {BBox} from "../../BBox"
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import TileLocalStorage from "../Actors/TileLocalStorage"
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import {Feature} from "geojson"
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import StaticFeatureSource from "../Sources/StaticFeatureSource"
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export default class LocalStorageFeatureSource extends DynamicTileSource {
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constructor(
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backend: string,
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layername: string,
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zoomlevel: number,
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mapProperties: {
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bounds: Store<BBox>
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zoom: Store<number>
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},
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options?: {
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isActive?: Store<boolean>,
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maxAge?: number // In seconds
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}
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) {
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const storage = TileLocalStorage.construct<Feature[]>(backend, layername, options?.maxAge ?? 24 * 60 * 60)
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super(
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zoomlevel,
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(tileIndex) =>
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new StaticFeatureSource(
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storage
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.getTileSource(tileIndex)
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.mapD((features) => {
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if (features.length === undefined) {
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console.trace("These are not features:", features)
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storage.invalidate(zoomlevel, tileIndex)
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return []
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}
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return features.filter((f) => !f.properties.id.match(/(node|way)\/-[0-9]+/));
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}
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)
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),
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mapProperties,
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options
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)
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}
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}
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