256 lines
11 KiB
TypeScript
256 lines
11 KiB
TypeScript
import {UIElement} from "./UI/UIElement";
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import {Utils} from "./Utils";
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import {ElementStorage} from "./Logic/ElementStorage";
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import {Changes} from "./Logic/Osm/Changes";
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import {OsmConnection} from "./Logic/Osm/OsmConnection";
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import Locale from "./UI/i18n/Locale";
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import {UIEventSource} from "./Logic/UIEventSource";
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import {LocalStorageSource} from "./Logic/Web/LocalStorageSource";
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import {QueryParameters} from "./Logic/Web/QueryParameters";
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import LayoutConfig from "./Customizations/JSON/LayoutConfig";
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import Hash from "./Logic/Web/Hash";
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import {MangroveIdentity} from "./Logic/Web/MangroveReviews";
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import InstalledThemes from "./Logic/Actors/InstalledThemes";
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import BaseLayer from "./Models/BaseLayer";
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import Loc from "./Models/Loc";
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import Constants from "./Models/Constants";
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import UpdateFromOverpass from "./Logic/Actors/UpdateFromOverpass";
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import LayerConfig from "./Customizations/JSON/LayerConfig";
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import TitleHandler from "./Logic/Actors/TitleHandler";
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/**
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* Contains the global state: a bunch of UI-event sources
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*/
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export default class State {
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// The singleton of the global state
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public static state: State;
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public readonly layoutToUse = new UIEventSource<LayoutConfig>(undefined);
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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;
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/**
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THe change handler
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*/
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public changes: Changes;
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/**
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The leaflet instance of the big basemap
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*/
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public leafletMap = new UIEventSource<L.Map>(undefined);
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/**
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* Background layer id
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*/
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public availableBackgroundLayers: UIEventSource<BaseLayer[]>;
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/**
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The user credentials
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*/
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public osmConnection: OsmConnection;
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public mangroveIdentity: MangroveIdentity;
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public favouriteLayers: UIEventSource<string[]>;
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public layerUpdater: UpdateFromOverpass;
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public filteredLayers: UIEventSource<{
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readonly isDisplayed: UIEventSource<boolean>,
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readonly layerDef: LayerConfig;
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}[]> = new UIEventSource<{
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readonly isDisplayed: UIEventSource<boolean>,
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readonly layerDef: LayerConfig;
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}[]>([])
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/**
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* The message that should be shown at the center of the screen
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*/
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public readonly centerMessage = new UIEventSource<string>("");
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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>(undefined)
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public readonly featureSwitchUserbadge: UIEventSource<boolean>;
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public readonly featureSwitchSearch: UIEventSource<boolean>;
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public readonly featureSwitchLayers: UIEventSource<boolean>;
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public readonly featureSwitchAddNew: UIEventSource<boolean>;
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public readonly featureSwitchWelcomeMessage: UIEventSource<boolean>;
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public readonly featureSwitchIframe: UIEventSource<boolean>;
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public readonly featureSwitchMoreQuests: UIEventSource<boolean>;
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public readonly featureSwitchShareScreen: UIEventSource<boolean>;
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public readonly featureSwitchGeolocation: UIEventSource<boolean>;
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public readonly featureSwitchIsTesting: UIEventSource<boolean>;
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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);
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public backgroundLayer;
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/* Last location where a click was registered
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*/
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public readonly LastClickLocation: UIEventSource<{ lat: number, lon: number }> = new UIEventSource<{ lat: number, lon: number }>(undefined)
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/**
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* The location as delivered by the GPS
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*/
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public currentGPSLocation: UIEventSource<{
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latlng: { lat: number, lng: number },
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accuracy: number
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}> = new UIEventSource<{ latlng: { lat: number, lng: number }, accuracy: number }>(undefined);
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public layoutDefinition: string;
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public installedThemes: UIEventSource<{ layout: LayoutConfig; definition: string }[]>;
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public layerControlIsOpened: UIEventSource<boolean> =
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QueryParameters.GetQueryParameter("layer-control-toggle", "false", "Whether or not the layer control is shown")
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.map<boolean>((str) => str !== "false", [], b => "" + b)
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public welcomeMessageOpenedTab = QueryParameters.GetQueryParameter("tab", "0", `The tab that is shown in the welcome-message. 0 = the explanation of the theme,1 = OSM-credits, 2 = sharescreen, 3 = more themes, 4 = about mapcomplete (user must be logged in and have >${Constants.userJourney.mapCompleteHelpUnlock} changesets)`).map<number>(
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str => isNaN(Number(str)) ? 0 : Number(str), [], n => "" + n
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);
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constructor(layoutToUse: LayoutConfig) {
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const self = this;
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this.layoutToUse.setData(layoutToUse);
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// -- Location control initialization
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{ const zoom = State.asFloat(
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QueryParameters.GetQueryParameter("z", "" + (layoutToUse?.startZoom ?? 1), "The initial/current zoom level")
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.syncWith(LocalStorageSource.Get("zoom")));
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const lat = State.asFloat(QueryParameters.GetQueryParameter("lat", "" + (layoutToUse?.startLat ?? 0), "The initial/current latitude")
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.syncWith(LocalStorageSource.Get("lat")));
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const lon = State.asFloat(QueryParameters.GetQueryParameter("lon", "" + (layoutToUse?.startLon ?? 0), "The initial/current longitude of the app")
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.syncWith(LocalStorageSource.Get("lon")));
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this.locationControl = new UIEventSource<Loc>({
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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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}).addCallback((latlonz) => {
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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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this.layoutToUse.addCallback(layoutToUse => {
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const lcd = self.locationControl.data;
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lcd.zoom = lcd.zoom ?? layoutToUse?.startZoom;
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lcd.lat = lcd.lat ?? layoutToUse?.startLat;
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lcd.lon = lcd.lon ?? layoutToUse?.startLon;
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self.locationControl.ping();
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});
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}
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// Helper function to initialize feature switches
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function featSw(key: string, deflt: (layout: LayoutConfig) => boolean, documentation: string): UIEventSource<boolean> {
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const queryParameterSource = QueryParameters.GetQueryParameter(key, undefined, documentation);
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// I'm so sorry about someone trying to decipher this
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// It takes the current layout, extracts the default value for this query parameter. A query parameter event source is then retrieved and flattened
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return UIEventSource.flatten(
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self.layoutToUse.map((layout) => {
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const defaultValue = deflt(layout);
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const queryParam = QueryParameters.GetQueryParameter(key, "" + defaultValue, documentation)
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return queryParam.map((str) => str === undefined ? defaultValue : (str !== "false"));
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}), [queryParameterSource]);
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}
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// Feature switch initialization - not as a function as the UIEventSources are readonly
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{
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this.featureSwitchUserbadge = featSw("fs-userbadge", (layoutToUse) => layoutToUse?.enableUserBadge ?? true,
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"Disables/Enables the user information pill (userbadge) at the top left. Disabling this disables logging in and thus disables editing all together, effectively putting MapComplete into read-only mode.");
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this.featureSwitchSearch = featSw("fs-search", (layoutToUse) => layoutToUse?.enableSearch ?? true,
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"Disables/Enables the search bar");
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this.featureSwitchLayers = featSw("fs-layers", (layoutToUse) => layoutToUse?.enableLayers ?? true,
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"Disables/Enables the layer control");
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this.featureSwitchAddNew = featSw("fs-add-new", (layoutToUse) => layoutToUse?.enableAddNewPoints ?? true,
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"Disables/Enables the 'add new feature'-popup. (A theme without presets might not have it in the first place)");
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this.featureSwitchWelcomeMessage = featSw("fs-welcome-message", () => true,
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"Disables/enables the help menu or welcome message");
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this.featureSwitchIframe = featSw("fs-iframe", () => false,
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"Disables/Enables the iframe-popup");
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this.featureSwitchMoreQuests = featSw("fs-more-quests", (layoutToUse) => layoutToUse?.enableMoreQuests ?? true,
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"Disables/Enables the 'More Quests'-tab in the welcome message");
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this.featureSwitchShareScreen = featSw("fs-share-screen", (layoutToUse) => layoutToUse?.enableShareScreen ?? true,
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"Disables/Enables the 'Share-screen'-tab in the welcome message");
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this.featureSwitchGeolocation = featSw("fs-geolocation", (layoutToUse) => layoutToUse?.enableGeolocation ?? true,
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"Disables/Enables the geolocation button");
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this.featureSwitchIsTesting = QueryParameters.GetQueryParameter("test", "false",
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"If true, 'dryrun' mode is activated. The app will behave as normal, except that changes to OSM will be printed onto the console instead of actually uploaded to osm.org")
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.map(str => str === "true",[], b => ""+b);
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}
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this.osmConnection = new OsmConnection(
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this.featureSwitchIsTesting.data,
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QueryParameters.GetQueryParameter("oauth_token", undefined,
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"Used to complete the login"),
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layoutToUse?.id,
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true
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);
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this.allElements = new ElementStorage();
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this.changes = new Changes();
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this.mangroveIdentity = new MangroveIdentity(
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this.osmConnection.GetLongPreference("identity", "mangrove")
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);
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this.installedThemes = new InstalledThemes(this.osmConnection).installedThemes;
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// Important: the favourite layers are initialized _after_ the installed themes, as these might contain an installedTheme
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this.favouriteLayers = this.osmConnection.GetLongPreference("favouriteLayers").map(
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str => Utils.Dedup(str?.split(";")) ?? [],
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[], layers => Utils.Dedup(layers)?.join(";")
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);
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Locale.language.syncWith(this.osmConnection.GetPreference("language"));
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Locale.language.addCallback((currentLanguage) => {
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const layoutToUse = self.layoutToUse.data;
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if (layoutToUse === undefined) {
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return;
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}
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if (this.layoutToUse.data.language.indexOf(currentLanguage) < 0) {
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console.log("Resetting language to", layoutToUse.language[0], "as", currentLanguage, " is unsupported")
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// The current language is not supported -> switch to a supported one
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Locale.language.setData(layoutToUse.language[0]);
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}
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}).ping()
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new TitleHandler(this.layoutToUse, this.selectedElement, this.allElements);
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}
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private static asFloat(source: UIEventSource<string>): UIEventSource<number> {
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return source.map(str => {
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let parsed = parseFloat(str);
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return isNaN(parsed) ? undefined : parsed;
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}, [], fl => {
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if (fl === undefined || isNaN(fl)) {
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return undefined;
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}
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return ("" + fl).substr(0, 8);
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})
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}
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}
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