import * as $ from "jquery" export class Utils { /** * In the 'deploy'-step, some code needs to be run by ts-node. * However, ts-node crashes when it sees 'document'. When running from console, we flag this and disable all code where document is needed. * This is a workaround and yet another hack */ public static runningFromConsole = false; public static readonly assets_path = "./assets/svg/"; static EncodeXmlValue(str) { return str.replace(/&/g, '&') .replace(//g, '>') .replace(/"/g, '"') .replace(/'/g, ''') } /** * Gives a clean float, or undefined if parsing fails * @param str */ static asFloat(str): number { if (str) { const i = parseFloat(str); if (isNaN(i)) { return undefined; } return i; } return undefined; } public static Upper(str: string) { return str.substr(0, 1).toUpperCase() + str.substr(1); } public static TwoDigits(i: number) { if (i < 10) { return "0" + i; } return "" + i; } public static Round(i: number) { if (i < 0) { return "-" + Utils.Round(-i); } const j = "" + Math.floor(i * 10); if (j.length == 1) { return "0." + j; } return j.substr(0, j.length - 1) + "." + j.substr(j.length - 1, j.length); } public static Times(f: ((i: number) => string), count: number): string { let res = ""; for (let i = 0; i < count; i++) { res += f(i); } return res; } static DoEvery(millis: number, f: (() => void)) { if (Utils.runningFromConsole) { return; } window.setTimeout( function () { f(); Utils.DoEvery(millis, f); } , millis) } public static NoNull(array: T[]): T[] { const ls: T[] = []; for (const t of array) { if (t === undefined || t === null) { continue; } ls.push(t); } return ls; } public static NoEmpty(array: string[]): string[] { const ls: string[] = []; for (const t of array) { if (t === "") { continue; } ls.push(t); } return ls; } public static EllipsesAfter(str: string, l: number = 100) { if (str === undefined) { return undefined; } if (str.length <= l) { return str; } return str.substr(0, l - 3) + "..."; } public static Dedup(arr: string[]): string[] { if (arr === undefined) { return undefined; } const newArr = []; for (const string of arr) { if (newArr.indexOf(string) < 0) { newArr.push(string); } } return newArr; } public static MergeTags(a: any, b: any) { const t = {}; for (const k in a) { t[k] = a[k]; } for (const k in b) { t[k] = b[k]; } return t; } public static SplitFirst(a: string, sep: string): string[] { const index = a.indexOf(sep); if (index < 0) { return [a]; } return [a.substr(0, index), a.substr(index + sep.length)]; } // Date will be undefined on failure public static LoadCustomCss(location: string) { const head = document.getElementsByTagName('head')[0]; const link = document.createElement('link'); link.id = "customCss"; link.rel = 'stylesheet'; link.type = 'text/css'; link.href = location; link.media = 'all'; head.appendChild(link); console.log("Added custom layout ", location) } static Merge(source: any, target: any) { target = JSON.parse(JSON.stringify(target)); source = JSON.parse(JSON.stringify(source)); for (const key in source) { const sourceV = source[key]; const targetV = target[key] if (typeof sourceV === "object") { if (targetV === undefined) { target[key] = sourceV; } else { Utils.Merge(sourceV, targetV); } } else { target[key] = sourceV; } } return target; } static getOrSetDefault(dict: Map, k: K, v: () => V) { let found = dict.get(k); if (found !== undefined) { return found; } dict.set(k, v()); return dict.get(k); } /** * Calculates the tile bounds of the * @param z * @param x * @param y * @returns [[lat, lon], [lat, lon]] */ static tile_bounds(z: number, x: number, y: number): [[number, number], [number, number]] { return [[Utils.tile2lat(y, z), Utils.tile2long(x, z)], [Utils.tile2lat(y + 1, z), Utils.tile2long(x + 1, z)]] } /** * Return x, y of the tile containing (lat, lon) on the given zoom level */ static embedded_tile(lat: number, lon: number, z: number): { x: number, y: number, z: number } { return {x: Utils.lon2tile(lon, z), y: Utils.lat2tile(lat, z), z: z} } private static tile2long(x, z) { return (x / Math.pow(2, z) * 360 - 180); } private static tile2lat(y, z) { const n = Math.PI - 2 * Math.PI * y / Math.pow(2, z); return (180 / Math.PI * Math.atan(0.5 * (Math.exp(n) - Math.exp(-n)))); } private static lon2tile(lon, zoom) { return (Math.floor((lon + 180) / 360 * Math.pow(2, zoom))); } private static lat2tile(lat, zoom) { return (Math.floor((1 - Math.log(Math.tan(lat * Math.PI / 180) + 1 / Math.cos(lat * Math.PI / 180)) / Math.PI) / 2 * Math.pow(2, zoom))); } }