Move new list dropdown logic to new list dropdown

app/assets/javascripts/boards/index.js

@@ -18,7 +18,7 @@ import modalMixin from './mixins/modal_mixins';
 import './filters/due_date_filters';
 import Board from 'ee/boards/components/board';
 import BoardSidebar from 'ee/boards/components/board_sidebar';
-import initNewListDropdown from './components/new_list_dropdown';
+import initNewListDropdown from 'ee_else_ce/boards/components/new_list_dropdown';
 import BoardAddIssuesModal from 'ee/boards/components/modal/index';
 import '~/vue_shared/vue_resource_interceptor';
 import {

ee/app/assets/javascripts/boards/components/boards_selector.vue

 <script>
-import $ from 'jquery';
 import { throttle } from 'underscore';
 import {
   GlLoadingIcon,
@@ -13,8 +12,6 @@ import {
 import Icon from '~/vue_shared/components/icon.vue';
 import boardsStore from '~/boards/stores/boards_store';
 import BoardForm from './board_form.vue';
-import AssigneeList from './assignees_list_slector';
-import MilestoneList from './milestone_list_selector';
 import httpStatusCodes from '~/lib/utils/http_status';
 
 const MIN_BOARDS_TO_VIEW_RECENT = 10;
@@ -95,8 +92,6 @@ export default {
     return {
       loading: true,
       hasScrollFade: false,
-      hasAssigneesListMounted: false,
-      hasMilestoneListMounted: false,
       scrollFadeInitialized: false,
       boards: [],
       recentBoards: [],
@@ -162,8 +157,6 @@ export default {
   },
   created() {
     boardsStore.setCurrentBoard(this.currentBoard);
-    $('#js-add-list').on('hide.bs.dropdown', this.handleDropdownHide);
-    $('.js-new-board-list-tabs').on('click', this.handleDropdownTabClick);
   },
   methods: {
     showPage(page) {
@@ -225,26 +218,6 @@ export default {
 
       this.hasScrollFade = this.isScrolledUp();
     },
-    handleDropdownHide(e) {
-      const $currTarget = $(e.currentTarget);
-      if ($currTarget.data('preventClose')) {
-        e.preventDefault();
-      }
-      $currTarget.removeData('preventClose');
-    },
-    handleDropdownTabClick(e) {
-      const $addListEl = $('#js-add-list');
-      $addListEl.data('preventClose', true);
-      if (e.target.dataset.action === 'tab-assignees' && !this.hasAssigneesListMounted) {
-        this.assigneeList = AssigneeList();
-        this.hasAssigneesListMounted = true;
-      }
-
-      if (e.target.dataset.action === 'tab-milestones' && !this.hasMilestoneListMounted) {
-        this.milstoneList = MilestoneList();
-        this.hasMilestoneListMounted = true;
-      }
-    },
   },
 };
 </script>

ee/app/assets/javascripts/boards/components/new_list_dropdown.js

+import $ from 'jquery';
+import initNewListDropdown from '~/boards/components/new_list_dropdown';
+import AssigneeList from './assignees_list_slector';
+import MilestoneList from './milestone_list_selector';
+
+const handleDropdownHide = e => {
+  const $currTarget = $(e.currentTarget);
+  if ($currTarget.data('preventClose')) {
+    e.preventDefault();
+  }
+  $currTarget.removeData('preventClose');
+};
+
+let assigneeList;
+let milstoneList;
+
+const handleDropdownTabClick = e => {
+  const $addListEl = $('#js-add-list');
+  $addListEl.data('preventClose', true);
+  if (e.target.dataset.action === 'tab-assignees' && !assigneeList) {
+    assigneeList = AssigneeList();
+  }
+
+  if (e.target.dataset.action === 'tab-milestones' && !milstoneList) {
+    milstoneList = MilestoneList();
+  }
+};
+
+export default () => {
+  initNewListDropdown();
+
+  $('#js-add-list').on('hide.bs.dropdown', handleDropdownHide);
+  $('.js-new-board-list-tabs').on('click', handleDropdownTabClick);
+};