mike-north/ember-cli-materialize

import { computed } from '@ember/object';
import layout from '../templates/components/md-btn-dropdown';
import MaterializeButton from './md-btn';

export default MaterializeButton.extend({
  layout,
  tagName: 'a',
  classNames: ['dropdown-button'],
  icon: 'mdi-navigation-expand-more',
  iconBody: '',
  iconPosition: 'right',
  attributeBindings: [
    'inDuration:data-induration',
    'outDuration:data-outduration',
    'constrainWidth:data-constrainwidth',
    '_hoverVal:data-hover',
    'gutter:data-gutter',
    'belowOrigin:data-beloworigin',
    'alignment'
  ],

  didRender() {
    this._super(...arguments);
    this._setupDropdown();
  },

  _hoverVal: computed('hover', function() {
    return this.get('hover') ? 'true' : 'false';
  }),

  _setupDropdown() {
    // needed until the Materialize.dropdown plugin is replaced
    this.$().attr('data-activates', this.get('_dropdownContentId'));
    let options = {
      hover: !!this.getWithDefault('hover', false),
      // Ignore requireCamelCaseOrUpperCaseIdentifiers because the original
      // variable of materializecss contains underscore
      // jscs:disable requireCamelCaseOrUpperCaseIdentifiers
      constrain_width: !!this.getWithDefault('constrainWidth', true),
      // jscs:enable requireCamelCaseOrUpperCaseIdentifiers
      inDuration: this.getWithDefault('inDuration', this.get('_mdSettings.dropdownInDuration')),
      outDuration: this.getWithDefault('outDuration', this.get('_mdSettings.dropdownOutDuration')),
      gutter: this.getWithDefault('gutter', 0),
      belowOrigin: !!this.getWithDefault('belowOrigin', false),
      alignment: this.getWithDefault('alignment', 'left')
    };

    this.$().dropdown(options);
  },
  _dropdownContentId: computed(function() {
    return `${this.get('elementId')}-dropdown-content`;
  })
});