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Refactoring: re-enable caching

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This commit is contained in:
Pieter Vander Vennet 2023-04-21 20:50:38 +02:00
parent 59544ec073
commit 476423f9d1
5 changed files with 19 additions and 3 deletions
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4
Logic/FeatureSource/Actors/TileLocalStorage.ts
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@ -11,6 +11,7 @@ import { UIEventSource } from "../../UIEventSource"
export default class TileLocalStorage<T> {
private static perLayer: Record<string, TileLocalStorage<any>> = {}
private readonly _layername: string
private readonly inUse = new UIEventSource(false)
private readonly cachedSources: Record<number, UIEventSource<T> & { flush: () => void }> = {}
private constructor(layername: string) {
@ -49,7 +50,10 @@ export default class TileLocalStorage<T> {
private async SetIdb(tileIndex: number, data: any): Promise<void> {
try {
await this.inUse.AsPromise((inUse) => !inUse)
this.inUse.setData(true)
await IdbLocalStorage.SetDirectly(this._layername + "_" + tileIndex, data)
this.inUse.setData(false)
} catch (e) {
console.error(
"Could not save tile to indexed-db: ",

6
Logic/UIEventSource.ts
View file

@ -240,6 +240,12 @@ export abstract class Store<T> implements Readable<T> {
return newSource
}
/**
* Converts the uiEventSource into a promise.
* The promise will return the value of the store if the given condition evaluates to true
* @param condition: an optional condition, default to 'store.value !== undefined'
* @constructor
*/
public AsPromise(condition?: (t: T) => boolean): Promise<T> {
const self = this
condition = condition ?? ((t) => t !== undefined)