text: /**
   * BetterDiscord Client DOM Module
   * Copyright (c) 2015-present Jiiks/JsSucks - https://github.com/Jiiks / https://github.com/JsSucks
   * All rights reserved.
   * https://betterdiscord.net
   *
   * This source code is licensed under the MIT license found in the
   * LICENSE file in the root directory of this source tree.
  */
  
  import { Utils, ClientLogger as Logger } from 'common';
  
  class BdNode {
      constructor(tag, className, id) {
          this.element = document.createElement(tag);
          if (className) this.element.className = className;
          if (id) this.element.id = id;
      }
  
      appendTo(e) {
          const el = DOM.getElement(e);
          if (!el) return null;
          el.append(this.element);
          return this.element;
      }
  
      prependTo(e) {
          const el = DOM.getElement(e);
          if (!el) return null;
          el.prepend(this.element);
          return this.element;
      }
  }
  
  export class DOMObserver {
      constructor(root, options) {
          this.observe = this.observe.bind(this);
          this.subscribe = this.subscribe.bind(this);
          this.observerCallback = this.observerCallback.bind(this);
  
          this.active = false;
          this.root = root || document.getElementById('app-mount');
          this.options = options || { attributes: true, childList: true, subtree: true };
  
          this.observer = new MutationObserver(this.observerCallback);
          this.observe();
      }
  
      observerCallback(mutations) {
          for (const sub of this.subscriptions) {
              try {
                  const filteredMutations = sub.filter ? mutations.filter(sub.filter) : mutations;
  
                  if (sub.group) {
                      if (!filteredMutations.length) continue;
                      sub.callback.call(sub.bind || sub, filteredMutations);
                  } else {
                      for (const mutation of filteredMutations) sub.callback.call(sub.bind || sub, mutation);
                  }
              } catch (err) {
                  Logger.warn('DOMObserver', [`Error in observer callback`, err]);
              }
          }
      }
  
      /**
       * Starts observing the element. This will be called when attaching a callback.
       * You don't need to call this manually.
       */
      observe() {
          if (this.active) return;
          this.observer.observe(this.root, this.options);
          this.active = true;
      }
  
      /**
       * Disconnects this observer. This stops callbacks being called, but does not unbind them.
       * You probably want to use observer.unsubscribeAll instead.
       */
      disconnect() {
          if (!this.active) return;
          this.observer.disconnect();
          this.active = false;
      }
  
      reconnect() {
          if (this.active) {
              this.disconnect();
              this.observe();
          }
      }
  
      get root() { return this._root }
      set root(root) { this._root = root; this.reconnect(); }
  
      get options() { return this._options }
      set options(options) { this._options = options; this.reconnect(); }
  
      get subscriptions() {
          return this._subscriptions || (this._subscriptions = []);
      }
  
      /**
       * Subscribes to mutations.
       * @param {Function} callback A function to call when on a mutation
       * @param {Function} filter A function to call to filter mutations
       * @param {Any} bind Something to bind the callback to
       * @param {Boolean} group Whether to call the callback with an array of mutations instead of a single mutation
       * @return {Object}
       */
      subscribe(callback, filter, bind, group) {
          const subscription = { callback, filter, bind, group };
          this.subscriptions.push(subscription);
          this.observe();
          return subscription;
      }
  
      /**
       * Removes a subscription and disconnect if there are none left.
       * @param {Object} subscription A subscription object returned by observer.subscribe
       */
      unsubscribe(subscription) {
          if (!this.subscriptions.includes(subscription))
              subscription = this.subscriptions.find(s => s.callback === subscription);
          Utils.removeFromArray(this.subscriptions, subscription);
          if (!this.subscriptions.length) this.disconnect();
      }
  
      unsubscribeAll() {
          this.subscriptions.splice(0, this.subscriptions.length);
          this.disconnect();
      }
  
      /**
       * Subscribes to mutations that affect an element matching a selector.
       * @param {Function} callback A function to call when on a mutation
       * @param {Function} filter A function to call to filter mutations
       * @param {Any} bind Something to bind the callback to
       * @param {Boolean} group Whether to call the callback with an array of mutations instead of a single mutation
       * @return {Object}
       */
      subscribeToQuerySelector(callback, selector, bind, group) {
          return this.subscribe(callback, mutation => {
              return mutation.target.matches(selector) // If the target matches the selector
                  || Array.from(mutation.addedNodes).concat(Array.from(mutation.removedNodes)) // Or if either an added or removed node
                      .find(n => n instanceof Element && (n.matches(selector) || n.querySelector(selector))); // match or contain an element matching the selector
          }, bind, group);
      }
  }
  
  class Manip {
      static setText(text, refocus) {
          const activeElement = document.activeElement;
          const txt = document.querySelector('.chat form textarea');
          if (!txt) return;
          txt.focus();
          txt.select();
          document.execCommand('insertText', false, text);
          if (activeElement && refocus) activeElement.focus();
      }
  
      static getText() {
          const txt = document.querySelector('.chat form textarea');
          if (!txt) return '';
          return txt.value;
      }
  }
  
  export { Manip as DOMManip };
  
  export default class DOM {
  
      static get manip() {
          return Manip;
      }
  
      static get observer() {
          return this._observer || (this._observer = new DOMObserver());
      }
  
      static get bdHead() { return this.getElement('bd-head') || this.createElement('bd-head').appendTo('head') }
      static get bdBody() { return this.getElement('bd-body') || this.createElement('bd-body').appendTo('body') }
      static get bdStyles() { return this.getElement('bd-styles') || this.createElement('bd-styles').appendTo(this.bdHead) }
      static get bdThemes() { return this.getElement('bd-themes') || this.createElement('bd-themes').appendTo(this.bdHead) }
      static get bdTooltips() { return this.getElement('bd-tooltips') || this.createElement('bd-tooltips').appendTo(this.bdBody) }
      static get bdModals() { return this.getElement('bd-modals') || this.createElement('bd-modals').appendTo(this.bdBody) }
      static get bdToasts() { return this.getElement('bd-toasts') || this.createElement('bd-toasts').appendTo(this.bdBody) }
      static get bdNotifications() { return this.getElement('bd-notifications') || this.createElement('bd-notifications').appendTo(this.bdBody) }
      static get bdContextMenu() { return this.getElement('bd-contextmenu') || this.createElement('bd-contextmenu').appendTo(this.bdBody) }
  
      static getElement(e) {
          if (e instanceof BdNode) return e.element;
          if (e instanceof window.Node) return e;
          if ('string' !== typeof e) return null;
          return document.querySelector(e);
      }
  
      static getElements(e) {
          return document.querySelectorAll(e);
      }
  
      static createElement(tag = 'div', className = null, id = null) {
          return new BdNode(tag, className, id);
      }
  
      static deleteStyle(id) {
          const exists = Array.from(this.bdStyles.children).find(e => e.id === id);
          if (exists) exists.remove();
      }
  
      static injectStyle(css, id) {
          const style = Array.from(this.bdStyles.children).find(e => e.id === id) || this.createElement('style', null, id).element;
          style.textContent = css;
          this.bdStyles.append(style);
      }
  
      static getStyleCss(id) {
          const exists = this.bdStyles.children.find(e => e.id === id);
          return exists ? exists.textContent : '';
      }
  
      static deleteTheme(id) {
          const exists = Array.from(this.bdThemes.children).find(e => e.id === id);
          if (exists) exists.remove();
      }
  
      static injectTheme(css, id) {
          const style = Array.from(this.bdThemes.children).find(e => e.id === id) || this.createElement('style', null, id).element;
          style.textContent = css;
          this.bdThemes.append(style);
      }
  
      static createStyle(css, id) {
          const style = document.createElement('style');
          style.id = id;
          style.type = 'text/css';
          style.appendChild(document.createTextNode(css));
          return style;
      }
  
      static setAttributes(node, attributes) {
          for (const attribute of attributes) {
              node.setAttribute(attribute.name, attribute.value);
          }
      }
  
  }
  