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path: root/app/assets/javascripts/filtered_search/dropdown_emoji.js
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import Flash from '../flash';
import Ajax from '../droplab/plugins/ajax';
import Filter from '../droplab/plugins/filter';
import FilteredSearchDropdown from './filtered_search_dropdown';
import DropdownUtils from './dropdown_utils';

export default class DropdownEmoji extends FilteredSearchDropdown {
  constructor(options = {}) {
    super(options);
    this.config = {
      Ajax: {
        endpoint: `${gon.relative_url_root || ''}/autocomplete/award_emojis`,
        method: 'setData',
        loadingTemplate: this.loadingTemplate,
        onError() {
          /* eslint-disable no-new */
          new Flash('An error occurred fetching the dropdown data.');
          /* eslint-enable no-new */
        },
      },
      Filter: {
        template: 'name',
      },
    };

    import(/* webpackChunkName: 'emoji' */ '~/emoji')
      .then(({ glEmojiTag }) => { this.glEmojiTag = glEmojiTag; })
      .catch(() => { /* ignore error and leave emoji name in the search bar */ });

    this.unbindEvents();
    this.bindEvents();
  }

  bindEvents() {
    super.bindEvents();

    this.listRenderedWrapper = this.listRendered.bind(this);
    this.dropdown.addEventListener('render.dl', this.listRenderedWrapper);
  }

  unbindEvents() {
    this.dropdown.removeEventListener('render.dl', this.listRenderedWrapper);
    super.unbindEvents();
  }

  listRendered() {
    this.replaceEmojiElement();
  }

  itemClicked(e) {
    super.itemClicked(e, (selected) => {
      const name = selected.querySelector('.js-data-value').innerText.trim();
      return DropdownUtils.getEscapedText(name);
    });
  }

  renderContent(forceShowList = false) {
    this.droplab.changeHookList(this.hookId, this.dropdown, [Ajax, Filter], this.config);
    super.renderContent(forceShowList);
  }

  replaceEmojiElement() {
    if (!this.glEmojiTag) return;

    // Replace empty gl-emoji tag to real content
    const dropdownItems = [...this.dropdown.querySelectorAll('.filter-dropdown-item')];
    dropdownItems.forEach((dropdownItem) => {
      const name = dropdownItem.querySelector('.js-data-value').innerText;
      const emojiTag = this.glEmojiTag(name);
      const emojiElement = dropdownItem.querySelector('gl-emoji');
      emojiElement.outerHTML = emojiTag;
    });
  }

  init() {
    this.droplab
      .addHook(this.input, this.dropdown, [Ajax, Filter], this.config).init();
  }
}