26 lines
1 KiB
TypeScript
26 lines
1 KiB
TypeScript
import FeatureSource from "./FeatureSource";
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import {UIEventSource} from "../UIEventSource";
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import LocalStorageSaver from "./LocalStorageSaver";
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import LayoutConfig from "../../Customizations/JSON/LayoutConfig";
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export default class LocalStorageSource implements FeatureSource {
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public features: UIEventSource<{ feature: any; freshness: Date }[]>;
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constructor(layout: UIEventSource<LayoutConfig>) {
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this.features = new UIEventSource<{ feature: any; freshness: Date }[]>([])
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const key = LocalStorageSaver.storageKey + layout.data.id
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try {
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const fromStorage = localStorage.getItem(key);
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if (fromStorage == null) {
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return;
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}
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const loaded = JSON.parse(fromStorage);
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this.features.setData(loaded);
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console.log("Loaded ",loaded.length," features from localstorage as cache")
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} catch (e) {
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console.log("Could not load features from localStorage:", e)
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localStorage.removeItem(key)
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}
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}
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} |