Common.Utils

Classes for your scripts

Version vom 04.09.2019. Aktuellste Version

Dieses Skript sollte nicht direkt installiert werden. Es handelt sich hier um eine Bibliothek für andere Skripte, welche über folgenden Befehl in den Metadaten eines Skriptes eingebunden wird // @require https://update.greasyfork.org/scripts/389765/730610/CommonUtils.js

Du musst eine Erweiterung wie Tampermonkey, Greasemonkey oder Violentmonkey installieren, um dieses Skript zu installieren.

You will need to install an extension such as Tampermonkey to install this script.

You will need to install an extension such as Tampermonkey or Violentmonkey to install this script.

You will need to install an extension such as Tampermonkey or Userscripts to install this script.

You will need to install an extension such as Tampermonkey to install this script.

Sie müssten eine Skript Manager Erweiterung installieren damit sie dieses Skript installieren können

(Ich habe schon ein Skript Manager, Lass mich es installieren!)

You will need to install an extension such as Stylus to install this style.

You will need to install an extension such as Stylus to install this style.

You will need to install an extension such as Stylus to install this style.

You will need to install a user style manager extension to install this style.

You will need to install a user style manager extension to install this style.

You will need to install a user style manager extension to install this style.

(I already have a user style manager, let me install it!)

// ==UserScript==
// @name         Common.Utils
// @description  Classes for your scripts
// @author       Anton Shevchuk
// @license      MIT License
// @version      0.0.1
// @match        *://*/*
// @grant        none
// @namespace    https://greasyfork.org/users/227648
// ==/UserScript==

/**
 * Object with wrapper with getters and setters
 */
class Container {
  constructor() {
    this.container = {};
  }
  /**
   * @param {String[]} keys
   * @param {String}   value
   */
  set(keys, value) {
    this._set(this.container, keys, value);
  }
  _set(elements, keys, value) {
    let key = keys.shift();
    if (typeof elements[key] === 'undefined') {
      elements[key] = {};
    }
    if (keys.length === 0) {
      elements[key] = value;
    } else {
      this._set(elements[key], keys, value);
    }
  }
  /**
   * @param {String[]} keys
   * @return {null|*}
   */
  get(...keys) {
    if (this.has(...keys)) {
      return this._get(this.container, ...keys);
    } else {
      return null;
    }
  }
  _get(elements, ...keys) {
    let key = keys.shift();
    if (typeof elements[key] === 'undefined') {
      return null;
    }
    if (keys.length === 0) {
      return elements[key];
    } else {
      return this._get(elements[key], ...keys);
    }
  }
  /**
   * @param {String[]} keys
   * @return {boolean}
   */
  has(...keys) {
    return this._has(this.container, ...keys);
  }
  _has(elements, ...keys) {
    let key = keys.shift();
    if (typeof elements[key] === 'undefined') {
      return false;
    }
    if (keys.length === 0) {
      return true;
    } else {
      return this._has(elements[key], ...keys);
    }
  }
}

/**
 * Simple cache object with getters and setters
 */
class Cache extends Container {
  /**
   * @param {String} key
   * @param {*} value
   */
  set(key, value) {
    super.set([key], value);
  }
}

/**
 * Settings object with localStorage as storage
 */
class Settings extends Container {
  constructor(uid, def = {}) {
    super();
    this.uid = uid;
    this.default = def;
    this.load();
  }
  load() {
    let settings = localStorage.getItem(this.uid);
    if (settings) {
      settings = JSON.parse(settings);
      this.container = Object.assign(this.default, settings);
    } else {
      this.container = this.default;
    }
  }
  /**
   * With jQuery:
   *   $(window).on('beforeunload', () => SettingsInstance.save() );
   */
  save() {
    localStorage.setItem(this.uid, JSON.stringify(this.container));
  }
}