forked from MapComplete/MapComplete
89 lines
No EOL
3.1 KiB
TypeScript
89 lines
No EOL
3.1 KiB
TypeScript
import FeatureSwitchState from "./FeatureSwitchState";
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import {ElementStorage} from "../ElementStorage";
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import {Changes} from "../Osm/Changes";
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import LayoutConfig from "../../Models/ThemeConfig/LayoutConfig";
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import {UIEventSource} from "../UIEventSource";
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import Loc from "../../Models/Loc";
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import {BBox} from "../BBox";
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import {QueryParameters} from "../Web/QueryParameters";
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import {LocalStorageSource} from "../Web/LocalStorageSource";
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import {Utils} from "../../Utils";
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import ChangeToElementsActor from "../Actors/ChangeToElementsActor";
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import PendingChangesUploader from "../Actors/PendingChangesUploader";
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/**
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* The part of the state keeping track of where the elements, loading them, configuring the feature pipeline etc
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*/
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export default class ElementsState extends FeatureSwitchState {
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/**
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The mapping from id -> UIEventSource<properties>
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*/
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public allElements: ElementStorage = new ElementStorage();
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/**
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The latest element that was selected
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*/
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public readonly selectedElement = new UIEventSource<any>(
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undefined,
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"Selected element"
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);
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/**
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* The map location: currently centered lat, lon and zoom
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*/
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public readonly locationControl = new UIEventSource<Loc>(undefined, "locationControl");
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/**
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* The current visible extent of the screen
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*/
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public readonly currentBounds = new UIEventSource<BBox>(undefined)
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constructor(layoutToUse: LayoutConfig) {
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super(layoutToUse);
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function localStorageSynced(key: string, deflt: number, docs: string ): UIEventSource<number>{
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const localStorage = LocalStorageSource.Get(key)
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const previousValue = localStorage.data
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const src = UIEventSource.asFloat(
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QueryParameters.GetQueryParameter(
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key,
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"" + deflt,
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docs
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).syncWith(localStorage)
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);
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if(src.data === deflt){
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const prev = Number(previousValue)
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if(!isNaN(prev)){
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src.setData(prev)
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}
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}
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return src;
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}
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// -- Location control initialization
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const zoom = localStorageSynced("z",(layoutToUse?.startZoom ?? 1),"The initial/current zoom level")
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const lat = localStorageSynced("lat",(layoutToUse?.startLat ?? 0),"The initial/current latitude")
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const lon = localStorageSynced("lon",(layoutToUse?.startLon ?? 0),"The initial/current longitude of the app")
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this.locationControl.setData({
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zoom: Utils.asFloat(zoom.data),
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lat: Utils.asFloat(lat.data),
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lon: Utils.asFloat(lon.data),
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})
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this.locationControl.addCallback((latlonz) => {
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// Sync the location controls
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zoom.setData(latlonz.zoom);
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lat.setData(latlonz.lat);
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lon.setData(latlonz.lon);
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});
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}
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} |