forked from MapComplete/MapComplete
28 lines
1.1 KiB
TypeScript
28 lines
1.1 KiB
TypeScript
import { FeatureSource } from "../FeatureSource"
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import { Feature } from "geojson"
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import TileLocalStorage from "./TileLocalStorage"
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import { GeoOperations } from "../../GeoOperations"
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import { Utils } from "../../../Utils"
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/***
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* Saves all the features that are passed in to localstorage, so they can be retrieved on the next run
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*
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* The data is saved in a tiled way on a fixed zoomlevel and is retrievable per layer.
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*
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* Also see the sibling class
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*/
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export default class SaveFeatureSourceToLocalStorage {
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constructor(layername: string, zoomlevel: number, features: FeatureSource) {
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const storage = TileLocalStorage.construct<Feature[]>(layername)
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features.features.addCallbackAndRunD((features) => {
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const sliced = GeoOperations.slice(zoomlevel, features)
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sliced.forEach((features, tileIndex) => {
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const src = storage.getTileSource(tileIndex)
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if (Utils.sameList(src.data, features)) {
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return
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}
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src.setData(features)
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})
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})
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}
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}
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