Resolve "Add dropdown to Groups link in top bar"

28 files changed, 808 insertions, 753 deletions

diff --git a/app/assets/javascripts/frequent_items/components/app.vue b/app/assets/javascripts/frequent_items/components/app.vue
new file mode 100644
index 00000000000..2f030de8967
--- /dev/null
+++ b/app/assets/javascripts/frequent_items/components/app.vue
@@ -0,0 +1,122 @@
+<script>
+import { mapState, mapActions, mapGetters } from 'vuex';
+import LoadingIcon from '~/vue_shared/components/loading_icon.vue';
+import AccessorUtilities from '~/lib/utils/accessor';
+import eventHub from '../event_hub';
+import store from '../store/';
+import { FREQUENT_ITEMS, STORAGE_KEY } from '../constants';
+import { isMobile, updateExistingFrequentItem } from '../utils';
+import FrequentItemsSearchInput from './frequent_items_search_input.vue';
+import FrequentItemsList from './frequent_items_list.vue';
+import frequentItemsMixin from './frequent_items_mixin';
+
+export default {
+  store,
+  components: {
+    LoadingIcon,
+    FrequentItemsSearchInput,
+    FrequentItemsList,
+  },
+  mixins: [frequentItemsMixin],
+  props: {
+    currentUserName: {
+      type: String,
+      required: true,
+    },
+    currentItem: {
+      type: Object,
+      required: true,
+    },
+  },
+  computed: {
+    ...mapState(['searchQuery', 'isLoadingItems', 'isFetchFailed', 'items']),
+    ...mapGetters(['hasSearchQuery']),
+    translations() {
+      return this.getTranslations(['loadingMessage', 'header']);
+    },
+  },
+  created() {
+    const { namespace, currentUserName, currentItem } = this;
+    const storageKey = `${currentUserName}/${STORAGE_KEY[namespace]}`;
+
+    this.setNamespace(namespace);
+    this.setStorageKey(storageKey);
+
+    if (currentItem.id) {
+      this.logItemAccess(storageKey, currentItem);
+    }
+
+    eventHub.$on(`${this.namespace}-dropdownOpen`, this.dropdownOpenHandler);
+  },
+  beforeDestroy() {
+    eventHub.$off(`${this.namespace}-dropdownOpen`, this.dropdownOpenHandler);
+  },
+  methods: {
+    ...mapActions(['setNamespace', 'setStorageKey', 'fetchFrequentItems']),
+    dropdownOpenHandler() {
+      if (this.searchQuery === '' || isMobile()) {
+        this.fetchFrequentItems();
+      }
+    },
+    logItemAccess(storageKey, item) {
+      if (!AccessorUtilities.isLocalStorageAccessSafe()) {
+        return false;
+      }
+
+      // Check if there's any frequent items list set
+      const storedRawItems = localStorage.getItem(storageKey);
+      const storedFrequentItems = storedRawItems
+        ? JSON.parse(storedRawItems)
+        : [{ ...item, frequency: 1 }]; // No frequent items list set, set one up.
+
+      // Check if item already exists in list
+      const itemMatchIndex = storedFrequentItems.findIndex(
+        frequentItem => frequentItem.id === item.id,
+      );
+
+      if (itemMatchIndex > -1) {
+        storedFrequentItems[itemMatchIndex] = updateExistingFrequentItem(
+          storedFrequentItems[itemMatchIndex],
+          item,
+        );
+      } else {
+        if (storedFrequentItems.length === FREQUENT_ITEMS.MAX_COUNT) {
+          storedFrequentItems.shift();
+        }
+
+        storedFrequentItems.push({ ...item, frequency: 1 });
+      }
+
+      return localStorage.setItem(storageKey, JSON.stringify(storedFrequentItems));
+    },
+  },
+};
+</script>
+
+<template>
+  <div>
+    <frequent-items-search-input
+      :namespace="namespace"
+    />
+    <loading-icon
+      v-if="isLoadingItems"
+      :label="translations.loadingMessage"
+      class="loading-animation prepend-top-20"
+      size="2"
+    />
+    <div
+      v-if="!isLoadingItems && !hasSearchQuery"
+      class="section-header"
+    >
+      {{ translations.header }}
+    </div>
+    <frequent-items-list
+      v-if="!isLoadingItems"
+      :items="items"
+      :namespace="namespace"
+      :has-search-query="hasSearchQuery"
+      :is-fetch-failed="isFetchFailed"
+      :matcher="searchQuery"
+    />
+  </div>
+</template>
diff --git a/app/assets/javascripts/frequent_items/components/frequent_items_list.vue b/app/assets/javascripts/frequent_items/components/frequent_items_list.vue
new file mode 100644
index 00000000000..8e511aa2a36
--- /dev/null
+++ b/app/assets/javascripts/frequent_items/components/frequent_items_list.vue
@@ -0,0 +1,78 @@
+<script>
+import FrequentItemsListItem from './frequent_items_list_item.vue';
+import frequentItemsMixin from './frequent_items_mixin';
+
+export default {
+  components: {
+    FrequentItemsListItem,
+  },
+  mixins: [frequentItemsMixin],
+  props: {
+    items: {
+      type: Array,
+      required: true,
+    },
+    hasSearchQuery: {
+      type: Boolean,
+      required: true,
+    },
+    isFetchFailed: {
+      type: Boolean,
+      required: true,
+    },
+    matcher: {
+      type: String,
+      required: true,
+    },
+  },
+  computed: {
+    translations() {
+      return this.getTranslations([
+        'itemListEmptyMessage',
+        'itemListErrorMessage',
+        'searchListEmptyMessage',
+        'searchListErrorMessage',
+      ]);
+    },
+    isListEmpty() {
+      return this.items.length === 0;
+    },
+    listEmptyMessage() {
+      if (this.hasSearchQuery) {
+        return this.isFetchFailed
+          ? this.translations.searchListErrorMessage
+          : this.translations.searchListEmptyMessage;
+      }
+
+      return this.isFetchFailed
+        ? this.translations.itemListErrorMessage
+        : this.translations.itemListEmptyMessage;
+    },
+  },
+};
+</script>
+
+<template>
+  <div class="frequent-items-list-container">
+    <ul class="list-unstyled">
+      <li
+        v-if="isListEmpty"
+        :class="{ 'section-failure': isFetchFailed }"
+        class="section-empty"
+      >
+        {{ listEmptyMessage }}
+      </li>
+      <frequent-items-list-item
+        v-for="item in items"
+        v-else
+        :key="item.id"
+        :item-id="item.id"
+        :item-name="item.name"
+        :namespace="item.namespace"
+        :web-url="item.webUrl"
+        :avatar-url="item.avatarUrl"
+        :matcher="matcher"
+      />
+    </ul>
+  </div>
+</template>
diff --git a/app/assets/javascripts/frequent_items/components/frequent_items_list_item.vue b/app/assets/javascripts/frequent_items/components/frequent_items_list_item.vue
new file mode 100644
index 00000000000..1f1665ff7fe
--- /dev/null
+++ b/app/assets/javascripts/frequent_items/components/frequent_items_list_item.vue
@@ -0,0 +1,117 @@
+<script>
+/* eslint-disable vue/require-default-prop, vue/require-prop-types */
+import Identicon from '../../vue_shared/components/identicon.vue';
+
+export default {
+  components: {
+    Identicon,
+  },
+  props: {
+    matcher: {
+      type: String,
+      required: false,
+    },
+    itemId: {
+      type: Number,
+      required: true,
+    },
+    itemName: {
+      type: String,
+      required: true,
+    },
+    namespace: {
+      type: String,
+      required: false,
+    },
+    webUrl: {
+      type: String,
+      required: true,
+    },
+    avatarUrl: {
+      required: true,
+      validator(value) {
+        return value === null || typeof value === 'string';
+      },
+    },
+  },
+  computed: {
+    hasAvatar() {
+      return this.avatarUrl !== null;
+    },
+    highlightedItemName() {
+      if (this.matcher) {
+        const matcherRegEx = new RegExp(this.matcher, 'gi');
+        const matches = this.itemName.match(matcherRegEx);
+
+        if (matches && matches.length > 0) {
+          return this.itemName.replace(matches[0], `<b>${matches[0]}</b>`);
+        }
+      }
+      return this.itemName;
+    },
+    /**
+     * Smartly truncates item namespace by doing two things;
+     * 1. Only include Group names in path by removing item name
+     * 2. Only include first and last group names in the path
+     *    when namespace has more than 2 groups present
+     *
+     * First part (removal of item name from namespace) can be
+     * done from backend but doing so involves migration of
+     * existing item namespaces which is not wise thing to do.
+     */
+    truncatedNamespace() {
+      if (!this.namespace) {
+        return null;
+      }
+      const namespaceArr = this.namespace.split(' / ');
+
+      namespaceArr.splice(-1, 1);
+      let namespace = namespaceArr.join(' / ');
+
+      if (namespaceArr.length > 2) {
+        namespace = `${namespaceArr[0]} / ... / ${namespaceArr.pop()}`;
+      }
+
+      return namespace;
+    },
+  },
+};
+</script>
+
+<template>
+  <li class="frequent-items-list-item-container">
+    <a
+      :href="webUrl"
+      class="clearfix"
+    >
+      <div class="frequent-items-item-avatar-container">
+        <img
+          v-if="hasAvatar"
+          :src="avatarUrl"
+          class="avatar s32"
+        />
+        <identicon
+          v-else
+          :entity-id="itemId"
+          :entity-name="itemName"
+          size-class="s32"
+        />
+      </div>
+      <div class="frequent-items-item-metadata-container">
+        <div
+          :title="itemName"
+          class="frequent-items-item-title"
+          v-html="highlightedItemName"
+        >
+        </div>
+        <div
+          v-if="truncatedNamespace"
+          :title="namespace"
+          class="frequent-items-item-namespace"
+        >
+          {{ truncatedNamespace }}
+        </div>
+      </div>
+    </a>
+  </li>
+</template>
diff --git a/app/assets/javascripts/frequent_items/components/frequent_items_mixin.js b/app/assets/javascripts/frequent_items/components/frequent_items_mixin.js
new file mode 100644
index 00000000000..704dc83ca8e
--- /dev/null
+++ b/app/assets/javascripts/frequent_items/components/frequent_items_mixin.js
@@ -0,0 +1,23 @@
+import { TRANSLATION_KEYS } from '../constants';
+
+export default {
+  props: {
+    namespace: {
+      type: String,
+      required: true,
+    },
+  },
+  methods: {
+    getTranslations(keys) {
+      const translationStrings = keys.reduce(
+        (acc, key) => ({
+          ...acc,
+          [key]: TRANSLATION_KEYS[this.namespace][key],
+        }),
+        {},
+      );
+
+      return translationStrings;
+    },
+  },
+};
diff --git a/app/assets/javascripts/frequent_items/components/frequent_items_search_input.vue b/app/assets/javascripts/frequent_items/components/frequent_items_search_input.vue
new file mode 100644
index 00000000000..a6a265eb3fd
--- /dev/null
+++ b/app/assets/javascripts/frequent_items/components/frequent_items_search_input.vue
@@ -0,0 +1,55 @@
+<script>
+import _ from 'underscore';
+import { mapActions } from 'vuex';
+import eventHub from '../event_hub';
+import frequentItemsMixin from './frequent_items_mixin';
+
+export default {
+  mixins: [frequentItemsMixin],
+  data() {
+    return {
+      searchQuery: '',
+    };
+  },
+  computed: {
+    translations() {
+      return this.getTranslations(['searchInputPlaceholder']);
+    },
+  },
+  watch: {
+    searchQuery: _.debounce(function debounceSearchQuery() {
+      this.setSearchQuery(this.searchQuery);
+    }, 500),
+  },
+  mounted() {
+    eventHub.$on(`${this.namespace}-dropdownOpen`, this.setFocus);
+  },
+  beforeDestroy() {
+    eventHub.$off(`${this.namespace}-dropdownOpen`, this.setFocus);
+  },
+  methods: {
+    ...mapActions(['setSearchQuery']),
+    setFocus() {
+      this.$refs.search.focus();
+    },
+  },
+};
+</script>
+
+<template>
+  <div class="search-input-container d-none d-sm-block">
+    <input
+      ref="search"
+      v-model="searchQuery"
+      :placeholder="translations.searchInputPlaceholder"
+      type="search"
+      class="form-control"
+    />
+    <i
+      v-if="!searchQuery"
+      class="search-icon fa fa-fw fa-search"
+      aria-hidden="true"
+    >
+    </i>
+  </div>
+</template>
diff --git a/app/assets/javascripts/frequent_items/constants.js b/app/assets/javascripts/frequent_items/constants.js
new file mode 100644
index 00000000000..9bc17f5ef4f
--- /dev/null
+++ b/app/assets/javascripts/frequent_items/constants.js
@@ -0,0 +1,38 @@
+import { s__ } from '~/locale';
+
+export const FREQUENT_ITEMS = {
+  MAX_COUNT: 20,
+  LIST_COUNT_DESKTOP: 5,
+  LIST_COUNT_MOBILE: 3,
+  ELIGIBLE_FREQUENCY: 3,
+};
+
+export const HOUR_IN_MS = 3600000;
+
+export const STORAGE_KEY = {
+  projects: 'frequent-projects',
+  groups: 'frequent-groups',
+};
+
+export const TRANSLATION_KEYS = {
+  projects: {
+    loadingMessage: s__('ProjectsDropdown|Loading projects'),
+    header: s__('ProjectsDropdown|Frequently visited'),
+    itemListErrorMessage: s__(
+      'ProjectsDropdown|This feature requires browser localStorage support',
+    ),
+    itemListEmptyMessage: s__('ProjectsDropdown|Projects you visit often will appear here'),
+    searchListErrorMessage: s__('ProjectsDropdown|Something went wrong on our end.'),
+    searchListEmptyMessage: s__('ProjectsDropdown|Sorry, no projects matched your search'),
+    searchInputPlaceholder: s__('ProjectsDropdown|Search your projects'),
+  },
+  groups: {
+    loadingMessage: s__('GroupsDropdown|Loading groups'),
+    header: s__('GroupsDropdown|Frequently visited'),
+    itemListErrorMessage: s__('GroupsDropdown|This feature requires browser localStorage support'),
+    itemListEmptyMessage: s__('GroupsDropdown|Groups you visit often will appear here'),
+    searchListErrorMessage: s__('GroupsDropdown|Something went wrong on our end.'),
+    searchListEmptyMessage: s__('GroupsDropdown|Sorry, no groups matched your search'),
+    searchInputPlaceholder: s__('GroupsDropdown|Search your groups'),
+  },
+};
diff --git a/app/assets/javascripts/projects_dropdown/event_hub.js b/app/assets/javascripts/frequent_items/event_hub.js
index 0948c2e5352..0948c2e5352 100644
--- a/app/assets/javascripts/projects_dropdown/event_hub.js
+++ b/app/assets/javascripts/frequent_items/event_hub.js
diff --git a/app/assets/javascripts/frequent_items/index.js b/app/assets/javascripts/frequent_items/index.js
new file mode 100644
index 00000000000..5157ff211dc
--- /dev/null
+++ b/app/assets/javascripts/frequent_items/index.js
@@ -0,0 +1,69 @@
+import $ from 'jquery';
+import Vue from 'vue';
+import Translate from '~/vue_shared/translate';
+import eventHub from '~/frequent_items/event_hub';
+import frequentItems from './components/app.vue';
+
+Vue.use(Translate);
+
+const frequentItemDropdowns = [
+  {
+    namespace: 'projects',
+    key: 'project',
+  },
+  {
+    namespace: 'groups',
+    key: 'group',
+  },
+];
+
+document.addEventListener('DOMContentLoaded', () => {
+  frequentItemDropdowns.forEach(dropdown => {
+    const { namespace, key } = dropdown;
+    const el = document.getElementById(`js-${namespace}-dropdown`);
+    const navEl = document.getElementById(`nav-${namespace}-dropdown`);
+
+    // Don't do anything if element doesn't exist (No groups dropdown)
+    // This is for when the user accesses GitLab without logging in
+    if (!el || !navEl) {
+      return;
+    }
+
+    $(navEl).on('shown.bs.dropdown', () => {
+      eventHub.$emit(`${namespace}-dropdownOpen`);
+    });
+
+    // eslint-disable-next-line no-new
+    new Vue({
+      el,
+      components: {
+        frequentItems,
+      },
+      data() {
+        const { dataset } = this.$options.el;
+        const item = {
+          id: Number(dataset[`${key}Id`]),
+          name: dataset[`${key}Name`],
+          namespace: dataset[`${key}Namespace`],
+          webUrl: dataset[`${key}WebUrl`],
+          avatarUrl: dataset[`${key}AvatarUrl`] || null,
+          lastAccessedOn: Date.now(),
+        };
+
+        return {
+          currentUserName: dataset.userName,
+          currentItem: item,
+        };
+      },
+      render(createElement) {
+        return createElement('frequent-items', {
+          props: {
+            namespace,
+            currentUserName: this.currentUserName,
+            currentItem: this.currentItem,
+          },
+        });
+      },
+    });
+  });
+});
diff --git a/app/assets/javascripts/frequent_items/store/actions.js b/app/assets/javascripts/frequent_items/store/actions.js
new file mode 100644
index 00000000000..3dd89a82a42
--- /dev/null
+++ b/app/assets/javascripts/frequent_items/store/actions.js
@@ -0,0 +1,81 @@
+import Api from '~/api';
+import AccessorUtilities from '~/lib/utils/accessor';
+import * as types from './mutation_types';
+import { getTopFrequentItems } from '../utils';
+
+export const setNamespace = ({ commit }, namespace) => {
+  commit(types.SET_NAMESPACE, namespace);
+};
+
+export const setStorageKey = ({ commit }, key) => {
+  commit(types.SET_STORAGE_KEY, key);
+};
+
+export const requestFrequentItems = ({ commit }) => {
+  commit(types.REQUEST_FREQUENT_ITEMS);
+};
+export const receiveFrequentItemsSuccess = ({ commit }, data) => {
+  commit(types.RECEIVE_FREQUENT_ITEMS_SUCCESS, data);
+};
+export const receiveFrequentItemsError = ({ commit }) => {
+  commit(types.RECEIVE_FREQUENT_ITEMS_ERROR);
+};
+
+export const fetchFrequentItems = ({ state, dispatch }) => {
+  dispatch('requestFrequentItems');
+
+  if (AccessorUtilities.isLocalStorageAccessSafe()) {
+    const storedFrequentItems = JSON.parse(localStorage.getItem(state.storageKey));
+
+    dispatch(
+      'receiveFrequentItemsSuccess',
+      !storedFrequentItems ? [] : getTopFrequentItems(storedFrequentItems),
+    );
+  } else {
+    dispatch('receiveFrequentItemsError');
+  }
+};
+
+export const requestSearchedItems = ({ commit }) => {
+  commit(types.REQUEST_SEARCHED_ITEMS);
+};
+export const receiveSearchedItemsSuccess = ({ commit }, data) => {
+  commit(types.RECEIVE_SEARCHED_ITEMS_SUCCESS, data);
+};
+export const receiveSearchedItemsError = ({ commit }) => {
+  commit(types.RECEIVE_SEARCHED_ITEMS_ERROR);
+};
+export const fetchSearchedItems = ({ state, dispatch }, searchQuery) => {
+  dispatch('requestSearchedItems');
+
+  const params = {
+    simple: true,
+    per_page: 20,
+    membership: !!gon.current_user_id,
+  };
+
+  if (state.namespace === 'projects') {
+    params.order_by = 'last_activity_at';
+  }
+
+  return Api[state.namespace](searchQuery, params)
+    .then(results => {
+      dispatch('receiveSearchedItemsSuccess', results);
+    })
+    .catch(() => {
+      dispatch('receiveSearchedItemsError');
+    });
+};
+
+export const setSearchQuery = ({ commit, dispatch }, query) => {
+  commit(types.SET_SEARCH_QUERY, query);
+
+  if (query) {
+    dispatch('fetchSearchedItems', query);
+  } else {
+    dispatch('fetchFrequentItems');
+  }
+};
+
+// prevent babel-plugin-rewire from generating an invalid default during karma tests
+export default () => {};
diff --git a/app/assets/javascripts/frequent_items/store/getters.js b/app/assets/javascripts/frequent_items/store/getters.js
new file mode 100644
index 00000000000..00165db6684
--- /dev/null
+++ b/app/assets/javascripts/frequent_items/store/getters.js
@@ -0,0 +1,4 @@
+export const hasSearchQuery = state => state.searchQuery !== '';
+
+// prevent babel-plugin-rewire from generating an invalid default during karma tests
+export default () => {};
diff --git a/app/assets/javascripts/frequent_items/store/index.js b/app/assets/javascripts/frequent_items/store/index.js
new file mode 100644
index 00000000000..ece9e6419dd
--- /dev/null
+++ b/app/assets/javascripts/frequent_items/store/index.js
@@ -0,0 +1,16 @@
+import Vue from 'vue';
+import Vuex from 'vuex';
+import * as actions from './actions';
+import * as getters from './getters';
+import mutations from './mutations';
+import state from './state';
+
+Vue.use(Vuex);
+
+export default () =>
+  new Vuex.Store({
+    actions,
+    getters,
+    mutations,
+    state: state(),
+  });
diff --git a/app/assets/javascripts/frequent_items/store/mutation_types.js b/app/assets/javascripts/frequent_items/store/mutation_types.js
new file mode 100644
index 00000000000..cbe2c9401ad
--- /dev/null
+++ b/app/assets/javascripts/frequent_items/store/mutation_types.js
@@ -0,0 +1,9 @@
+export const SET_NAMESPACE = 'SET_NAMESPACE';
+export const SET_STORAGE_KEY = 'SET_STORAGE_KEY';
+export const SET_SEARCH_QUERY = 'SET_SEARCH_QUERY';
+export const REQUEST_FREQUENT_ITEMS = 'REQUEST_FREQUENT_ITEMS';
+export const RECEIVE_FREQUENT_ITEMS_SUCCESS = 'RECEIVE_FREQUENT_ITEMS_SUCCESS';
+export const RECEIVE_FREQUENT_ITEMS_ERROR = 'RECEIVE_FREQUENT_ITEMS_ERROR';
+export const REQUEST_SEARCHED_ITEMS = 'REQUEST_SEARCHED_ITEMS';
+export const RECEIVE_SEARCHED_ITEMS_SUCCESS = 'RECEIVE_SEARCHED_ITEMS_SUCCESS';
+export const RECEIVE_SEARCHED_ITEMS_ERROR = 'RECEIVE_SEARCHED_ITEMS_ERROR';
diff --git a/app/assets/javascripts/frequent_items/store/mutations.js b/app/assets/javascripts/frequent_items/store/mutations.js
new file mode 100644
index 00000000000..41b660a243f
--- /dev/null
+++ b/app/assets/javascripts/frequent_items/store/mutations.js
@@ -0,0 +1,71 @@
+import * as types from './mutation_types';
+
+export default {
+  [types.SET_NAMESPACE](state, namespace) {
+    Object.assign(state, {
+      namespace,
+    });
+  },
+  [types.SET_STORAGE_KEY](state, storageKey) {
+    Object.assign(state, {
+      storageKey,
+    });
+  },
+  [types.SET_SEARCH_QUERY](state, searchQuery) {
+    const hasSearchQuery = searchQuery !== '';
+
+    Object.assign(state, {
+      searchQuery,
+      isLoadingItems: true,
+      hasSearchQuery,
+    });
+  },
+  [types.REQUEST_FREQUENT_ITEMS](state) {
+    Object.assign(state, {
+      isLoadingItems: true,
+      hasSearchQuery: false,
+    });
+  },
+  [types.RECEIVE_FREQUENT_ITEMS_SUCCESS](state, rawItems) {
+    Object.assign(state, {
+      items: rawItems,
+      isLoadingItems: false,
+      hasSearchQuery: false,
+      isFetchFailed: false,
+    });
+  },
+  [types.RECEIVE_FREQUENT_ITEMS_ERROR](state) {
+    Object.assign(state, {
+      isLoadingItems: false,
+      hasSearchQuery: false,
+      isFetchFailed: true,
+    });
+  },
+  [types.REQUEST_SEARCHED_ITEMS](state) {
+    Object.assign(state, {
+      isLoadingItems: true,
+      hasSearchQuery: true,
+    });
+  },
+  [types.RECEIVE_SEARCHED_ITEMS_SUCCESS](state, rawItems) {
+    Object.assign(state, {
+      items: rawItems.map(rawItem => ({
+        id: rawItem.id,
+        name: rawItem.name,
+        namespace: rawItem.name_with_namespace || rawItem.full_name,
+        webUrl: rawItem.web_url,
+        avatarUrl: rawItem.avatar_url,
+      })),
+      isLoadingItems: false,
+      hasSearchQuery: true,
+      isFetchFailed: false,
+    });
+  },
+  [types.RECEIVE_SEARCHED_ITEMS_ERROR](state) {
+    Object.assign(state, {
+      isLoadingItems: false,
+      hasSearchQuery: true,
+      isFetchFailed: true,
+    });
+  },
+};
diff --git a/app/assets/javascripts/frequent_items/store/state.js b/app/assets/javascripts/frequent_items/store/state.js
new file mode 100644
index 00000000000..75b04febee4
--- /dev/null
+++ b/app/assets/javascripts/frequent_items/store/state.js
@@ -0,0 +1,8 @@
+export default () => ({
+  namespace: '',
+  storageKey: '',
+  searchQuery: '',
+  isLoadingItems: false,
+  isFetchFailed: false,
+  items: [],
+});
diff --git a/app/assets/javascripts/frequent_items/utils.js b/app/assets/javascripts/frequent_items/utils.js
new file mode 100644
index 00000000000..aba692e4b99
--- /dev/null
+++ b/app/assets/javascripts/frequent_items/utils.js
@@ -0,0 +1,49 @@
+import _ from 'underscore';
+import bp from '~/breakpoints';
+import { FREQUENT_ITEMS, HOUR_IN_MS } from './constants';
+
+export const isMobile = () => {
+  const screenSize = bp.getBreakpointSize();
+
+  return screenSize === 'sm' || screenSize === 'xs';
+};
+
+export const getTopFrequentItems = items => {
+  if (!items) {
+    return [];
+  }
+  const frequentItemsCount = isMobile()
+    ? FREQUENT_ITEMS.LIST_COUNT_MOBILE
+    : FREQUENT_ITEMS.LIST_COUNT_DESKTOP;
+
+  const frequentItems = items.filter(item => item.frequency >= FREQUENT_ITEMS.ELIGIBLE_FREQUENCY);
+
+  if (!frequentItems || frequentItems.length === 0) {
+    return [];
+  }
+
+  frequentItems.sort((itemA, itemB) => {
+    // Sort all frequent items in decending order of frequency
+    // and then by lastAccessedOn with recent most first
+    if (itemA.frequency !== itemB.frequency) {
+      return itemB.frequency - itemA.frequency;
+    } else if (itemA.lastAccessedOn !== itemB.lastAccessedOn) {
+      return itemB.lastAccessedOn - itemA.lastAccessedOn;
+    }
+
+    return 0;
+  });
+
+  return _.first(frequentItems, frequentItemsCount);
+};
+
+export const updateExistingFrequentItem = (frequentItem, item) => {
+  const accessedOverHourAgo =
+    Math.abs(item.lastAccessedOn - frequentItem.lastAccessedOn) / HOUR_IN_MS > 1;
+
+  return {
+    ...item,
+    frequency: accessedOverHourAgo ? frequentItem.frequency + 1 : frequentItem.frequency,
+    lastAccessedOn: accessedOverHourAgo ? Date.now() : frequentItem.lastAccessedOn,
+  };
+};
diff --git a/app/assets/javascripts/main.js b/app/assets/javascripts/main.js
index c9ce838cd48..2718f73a830 100644
--- a/app/assets/javascripts/main.js
+++ b/app/assets/javascripts/main.js
@@ -26,7 +26,7 @@ import './feature_highlight/feature_highlight_options';
 import LazyLoader from './lazy_loader';
 import initLogoAnimation from './logo';
 import './milestone_select';
-import './projects_dropdown';
+import './frequent_items';
 import initBreadcrumbs from './breadcrumb';
 import initDispatcher from './dispatcher';
 
diff --git a/app/assets/javascripts/projects_dropdown/components/app.vue b/app/assets/javascripts/projects_dropdown/components/app.vue
deleted file mode 100644
index 73d49488299..00000000000
--- a/app/assets/javascripts/projects_dropdown/components/app.vue
+++ /dev/null
@@ -1,158 +0,0 @@
-<script>
-import bs from '../../breakpoints';
-import eventHub from '../event_hub';
-import loadingIcon from '../../vue_shared/components/loading_icon.vue';
-
-import projectsListFrequent from './projects_list_frequent.vue';
-import projectsListSearch from './projects_list_search.vue';
-
-import search from './search.vue';
-
-export default {
-  components: {
-    search,
-    loadingIcon,
-    projectsListFrequent,
-    projectsListSearch,
-  },
-  props: {
-    currentProject: {
-      type: Object,
-      required: true,
-    },
-    store: {
-      type: Object,
-      required: true,
-    },
-    service: {
-      type: Object,
-      required: true,
-    },
-  },
-  data() {
-    return {
-      isLoadingProjects: false,
-      isFrequentsListVisible: false,
-      isSearchListVisible: false,
-      isLocalStorageFailed: false,
-      isSearchFailed: false,
-      searchQuery: '',
-    };
-  },
-  computed: {
-    frequentProjects() {
-      return this.store.getFrequentProjects();
-    },
-    searchProjects() {
-      return this.store.getSearchedProjects();
-    },
-  },
-  created() {
-    if (this.currentProject.id) {
-      this.logCurrentProjectAccess();
-    }
-
-    eventHub.$on('dropdownOpen', this.fetchFrequentProjects);
-    eventHub.$on('searchProjects', this.fetchSearchedProjects);
-    eventHub.$on('searchCleared', this.handleSearchClear);
-    eventHub.$on('searchFailed', this.handleSearchFailure);
-  },
-  beforeDestroy() {
-    eventHub.$off('dropdownOpen', this.fetchFrequentProjects);
-    eventHub.$off('searchProjects', this.fetchSearchedProjects);
-    eventHub.$off('searchCleared', this.handleSearchClear);
-    eventHub.$off('searchFailed', this.handleSearchFailure);
-  },
-  methods: {
-    toggleFrequentProjectsList(state) {
-      this.isLoadingProjects = !state;
-      this.isSearchListVisible = !state;
-      this.isFrequentsListVisible = state;
-    },
-    toggleSearchProjectsList(state) {
-      this.isLoadingProjects = !state;
-      this.isFrequentsListVisible = !state;
-      this.isSearchListVisible = state;
-    },
-    toggleLoader(state) {
-      this.isFrequentsListVisible = !state;
-      this.isSearchListVisible = !state;
-      this.isLoadingProjects = state;
-    },
-    fetchFrequentProjects() {
-      const screenSize = bs.getBreakpointSize();
-      if (this.searchQuery && (screenSize !== 'sm' && screenSize !== 'xs')) {
-        this.toggleSearchProjectsList(true);
-      } else {
-        this.toggleLoader(true);
-        this.isLocalStorageFailed = false;
-        const projects = this.service.getFrequentProjects();
-        if (projects) {
-          this.toggleFrequentProjectsList(true);
-          this.store.setFrequentProjects(projects);
-        } else {
-          this.isLocalStorageFailed = true;
-          this.toggleFrequentProjectsList(true);
-          this.store.setFrequentProjects([]);
-        }
-      }
-    },
-    fetchSearchedProjects(searchQuery) {
-      this.searchQuery = searchQuery;
-      this.toggleLoader(true);
-      this.service
-        .getSearchedProjects(this.searchQuery)
-        .then(res => res.json())
-        .then(results => {
-          this.toggleSearchProjectsList(true);
-          this.store.setSearchedProjects(results);
-        })
-        .catch(() => {
-          this.isSearchFailed = true;
-          this.toggleSearchProjectsList(true);
-        });
-    },
-    logCurrentProjectAccess() {
-      this.service.logProjectAccess(this.currentProject);
-    },
-    handleSearchClear() {
-      this.searchQuery = '';
-      this.toggleFrequentProjectsList(true);
-      this.store.clearSearchedProjects();
-    },
-    handleSearchFailure() {
-      this.isSearchFailed = true;
-      this.toggleSearchProjectsList(true);
-    },
-  },
-};
-</script>
-
-<template>
-  <div>
-    <search/>
-    <loading-icon
-      v-if="isLoadingProjects"
-      :label="s__('ProjectsDropdown|Loading projects')"
-      class="loading-animation prepend-top-20"
-      size="2"
-    />
-    <div
-      v-if="isFrequentsListVisible"
-      class="section-header"
-    >
-      {{ s__('ProjectsDropdown|Frequently visited') }}
-    </div>
-    <projects-list-frequent
-      v-if="isFrequentsListVisible"
-      :local-storage-failed="isLocalStorageFailed"
-      :projects="frequentProjects"
-    />
-    <projects-list-search
-      v-if="isSearchListVisible"
-      :search-failed="isSearchFailed"
-      :matcher="searchQuery"
-      :projects="searchProjects"
-    />
-  </div>
-</template>
diff --git a/app/assets/javascripts/projects_dropdown/components/projects_list_frequent.vue b/app/assets/javascripts/projects_dropdown/components/projects_list_frequent.vue
deleted file mode 100644
index 625e0aa548c..00000000000
--- a/app/assets/javascripts/projects_dropdown/components/projects_list_frequent.vue
+++ /dev/null
@@ -1,57 +0,0 @@
-<script>
-  import { s__ } from '../../locale';
-  import projectsListItem from './projects_list_item.vue';
-
-  export default {
-    components: {
-      projectsListItem,
-    },
-    props: {
-      projects: {
-        type: Array,
-        required: true,
-      },
-      localStorageFailed: {
-        type: Boolean,
-        required: true,
-      },
-    },
-    computed: {
-      isListEmpty() {
-        return this.projects.length === 0;
-      },
-      listEmptyMessage() {
-        return this.localStorageFailed ?
-          s__('ProjectsDropdown|This feature requires browser localStorage support') :
-          s__('ProjectsDropdown|Projects you visit often will appear here');
-      },
-    },
-  };
-</script>
-
-<template>
-  <div
-    class="projects-list-frequent-container"
-  >
-    <ul
-      class="list-unstyled"
-    >
-      <li
-        v-if="isListEmpty"
-        class="section-empty"
-      >
-        {{ listEmptyMessage }}
-      </li>
-      <projects-list-item
-        v-for="(project, index) in projects"
-        v-else
-        :key="index"
-        :project-id="project.id"
-        :project-name="project.name"
-        :namespace="project.namespace"
-        :web-url="project.webUrl"
-        :avatar-url="project.avatarUrl"
-      />
-    </ul>
-  </div>
-</template>
diff --git a/app/assets/javascripts/projects_dropdown/components/projects_list_item.vue b/app/assets/javascripts/projects_dropdown/components/projects_list_item.vue
deleted file mode 100644
index eafbf6c99e2..00000000000
--- a/app/assets/javascripts/projects_dropdown/components/projects_list_item.vue
+++ /dev/null
@@ -1,116 +0,0 @@
-<script>
-  /* eslint-disable vue/require-default-prop, vue/require-prop-types */
-  import identicon from '../../vue_shared/components/identicon.vue';
-
-  export default {
-    components: {
-      identicon,
-    },
-    props: {
-      matcher: {
-        type: String,
-        required: false,
-      },
-      projectId: {
-        type: Number,
-        required: true,
-      },
-      projectName: {
-        type: String,
-        required: true,
-      },
-      namespace: {
-        type: String,
-        required: true,
-      },
-      webUrl: {
-        type: String,
-        required: true,
-      },
-      avatarUrl: {
-        required: true,
-        validator(value) {
-          return value === null || typeof value === 'string';
-        },
-      },
-    },
-    computed: {
-      hasAvatar() {
-        return this.avatarUrl !== null;
-      },
-      highlightedProjectName() {
-        if (this.matcher) {
-          const matcherRegEx = new RegExp(this.matcher, 'gi');
-          const matches = this.projectName.match(matcherRegEx);
-
-          if (matches && matches.length > 0) {
-            return this.projectName.replace(matches[0], `<b>${matches[0]}</b>`);
-          }
-        }
-        return this.projectName;
-      },
-      /**
-       * Smartly truncates project namespace by doing two things;
-       * 1. Only include Group names in path by removing project name
-       * 2. Only include first and last group names in the path
-       *    when namespace has more than 2 groups present
-       *
-       * First part (removal of project name from namespace) can be
-       * done from backend but doing so involves migration of
-       * existing project namespaces which is not wise thing to do.
-       */
-      truncatedNamespace() {
-        const namespaceArr = this.namespace.split(' / ');
-        namespaceArr.splice(-1, 1);
-        let namespace = namespaceArr.join(' / ');
-
-        if (namespaceArr.length > 2) {
-          namespace = `${namespaceArr[0]} / ... / ${namespaceArr.pop()}`;
-        }
-
-        return namespace;
-      },
-    },
-  };
-</script>
-
-<template>
-  <li
-    class="projects-list-item-container"
-  >
-    <a
-      :href="webUrl"
-      class="clearfix"
-    >
-      <div
-        class="project-item-avatar-container"
-      >
-        <img
-          v-if="hasAvatar"
-          :src="avatarUrl"
-          class="avatar s32"
-        />
-        <identicon
-          v-else
-          :entity-id="projectId"
-          :entity-name="projectName"
-          size-class="s32"
-        />
-      </div>
-      <div
-        class="project-item-metadata-container"
-      >
-        <div
-          :title="projectName"
-          class="project-title"
-          v-html="highlightedProjectName"
-        >
-        </div>
-        <div
-          :title="namespace"
-          class="project-namespace"
-        >{{ truncatedNamespace }}</div>
-      </div>
-    </a>
-  </li>
-</template>
diff --git a/app/assets/javascripts/projects_dropdown/components/projects_list_search.vue b/app/assets/javascripts/projects_dropdown/components/projects_list_search.vue
deleted file mode 100644
index 76e9cb9e53f..00000000000
--- a/app/assets/javascripts/projects_dropdown/components/projects_list_search.vue
+++ /dev/null
@@ -1,63 +0,0 @@
-<script>
-import { s__ } from '../../locale';
-import projectsListItem from './projects_list_item.vue';
-
-export default {
-  components: {
-    projectsListItem,
-  },
-  props: {
-    matcher: {
-      type: String,
-      required: true,
-    },
-    projects: {
-      type: Array,
-      required: true,
-    },
-    searchFailed: {
-      type: Boolean,
-      required: true,
-    },
-  },
-  computed: {
-    isListEmpty() {
-      return this.projects.length === 0;
-    },
-    listEmptyMessage() {
-      return this.searchFailed ?
-        s__('ProjectsDropdown|Something went wrong on our end.') :
-        s__('ProjectsDropdown|Sorry, no projects matched your search');
-    },
-  },
-};
-</script>
-
-<template>
-  <div
-    class="projects-list-search-container"
-  >
-    <ul
-      class="list-unstyled"
-    >
-      <li
-        v-if="isListEmpty"
-        :class="{ 'section-failure': searchFailed }"
-        class="section-empty"
-      >
-        {{ listEmptyMessage }}
-      </li>
-      <projects-list-item
-        v-for="(project, index) in projects"
-        v-else
-        :key="index"
-        :project-id="project.id"
-        :project-name="project.name"
-        :namespace="project.namespace"
-        :web-url="project.webUrl"
-        :avatar-url="project.avatarUrl"
-        :matcher="matcher"
-      />
-    </ul>
-  </div>
-</template>
diff --git a/app/assets/javascripts/projects_dropdown/components/search.vue b/app/assets/javascripts/projects_dropdown/components/search.vue
deleted file mode 100644
index 28f2a18f2a6..00000000000
--- a/app/assets/javascripts/projects_dropdown/components/search.vue
+++ /dev/null
@@ -1,65 +0,0 @@
-<script>
-  import _ from 'underscore';
-  import eventHub from '../event_hub';
-
-  export default {
-    data() {
-      return {
-        searchQuery: '',
-      };
-    },
-    watch: {
-      searchQuery() {
-        this.handleInput();
-      },
-    },
-    mounted() {
-      eventHub.$on('dropdownOpen', this.setFocus);
-    },
-    beforeDestroy() {
-      eventHub.$off('dropdownOpen', this.setFocus);
-    },
-    methods: {
-      setFocus() {
-        this.$refs.search.focus();
-      },
-      emitSearchEvents() {
-        if (this.searchQuery) {
-          eventHub.$emit('searchProjects', this.searchQuery);
-        } else {
-          eventHub.$emit('searchCleared');
-        }
-      },
-      /**
-       * Callback function within _.debounce is intentionally
-       * kept as ES5 `function() {}` instead of ES6 `() => {}`
-       * as it otherwise messes up function context
-       * and component reference is no longer accessible via `this`
-       */
-      // eslint-disable-next-line func-names
-      handleInput: _.debounce(function () {
-        this.emitSearchEvents();
-      }, 500),
-    },
-  };
-</script>
-
-<template>
-  <div
-    class="search-input-container d-none d-sm-block"
-  >
-    <input
-      ref="search"
-      v-model="searchQuery"
-      :placeholder="s__('ProjectsDropdown|Search your projects')"
-      type="search"
-      class="form-control"
-    />
-    <i
-      v-if="!searchQuery"
-      class="search-icon fa fa-fw fa-search"
-      aria-hidden="true"
-    >
-    </i>
-  </div>
-</template>
diff --git a/app/assets/javascripts/projects_dropdown/constants.js b/app/assets/javascripts/projects_dropdown/constants.js
deleted file mode 100644
index 8937097184c..00000000000
--- a/app/assets/javascripts/projects_dropdown/constants.js
+++ /dev/null
@@ -1,10 +0,0 @@
-export const FREQUENT_PROJECTS = {
-  MAX_COUNT: 20,
-  LIST_COUNT_DESKTOP: 5,
-  LIST_COUNT_MOBILE: 3,
-  ELIGIBLE_FREQUENCY: 3,
-};
-
-export const HOUR_IN_MS = 3600000;
-
-export const STORAGE_KEY = 'frequent-projects';
diff --git a/app/assets/javascripts/projects_dropdown/index.js b/app/assets/javascripts/projects_dropdown/index.js
deleted file mode 100644
index 6056f12aa4f..00000000000
--- a/app/assets/javascripts/projects_dropdown/index.js
+++ /dev/null
@@ -1,66 +0,0 @@
-import $ from 'jquery';
-import Vue from 'vue';
-
-import Translate from '../vue_shared/translate';
-import eventHub from './event_hub';
-import ProjectsService from './service/projects_service';
-import ProjectsStore from './store/projects_store';
-
-import projectsDropdownApp from './components/app.vue';
-
-Vue.use(Translate);
-
-document.addEventListener('DOMContentLoaded', () => {
-  const el = document.getElementById('js-projects-dropdown');
-  const navEl = document.getElementById('nav-projects-dropdown');
-
-  // Don't do anything if element doesn't exist (No projects dropdown)
-  // This is for when the user accesses GitLab without logging in
-  if (!el || !navEl) {
-    return;
-  }
-
-  $(navEl).on('shown.bs.dropdown', () => {
-    eventHub.$emit('dropdownOpen');
-  });
-
-  // eslint-disable-next-line no-new
-  new Vue({
-    el,
-    components: {
-      projectsDropdownApp,
-    },
-    data() {
-      const { dataset } = this.$options.el;
-      const store = new ProjectsStore();
-      const service = new ProjectsService(dataset.userName);
-
-      const project = {
-        id: Number(dataset.projectId),
-        name: dataset.projectName,
-        namespace: dataset.projectNamespace,
-        webUrl: dataset.projectWebUrl,
-        avatarUrl: dataset.projectAvatarUrl || null,
-        lastAccessedOn: Date.now(),
-      };
-
-      return {
-        store,
-        service,
-        state: store.state,
-        currentUserName: dataset.userName,
-        currentProject: project,
-      };
-    },
-    render(createElement) {
-      return createElement('projects-dropdown-app', {
-        props: {
-          currentUserName: this.currentUserName,
-          currentProject: this.currentProject,
-          store: this.store,
-          service: this.service,
-        },
-      });
-    },
-  });
-});
diff --git a/app/assets/javascripts/projects_dropdown/service/projects_service.js b/app/assets/javascripts/projects_dropdown/service/projects_service.js
deleted file mode 100644
index ed1c3deead2..00000000000
--- a/app/assets/javascripts/projects_dropdown/service/projects_service.js
+++ /dev/null
@@ -1,137 +0,0 @@
-import _ from 'underscore';
-import Vue from 'vue';
-import VueResource from 'vue-resource';
-
-import bp from '../../breakpoints';
-import Api from '../../api';
-import AccessorUtilities from '../../lib/utils/accessor';
-
-import { FREQUENT_PROJECTS, HOUR_IN_MS, STORAGE_KEY } from '../constants';
-
-Vue.use(VueResource);
-
-export default class ProjectsService {
-  constructor(currentUserName) {
-    this.isLocalStorageAvailable = AccessorUtilities.isLocalStorageAccessSafe();
-    this.currentUserName = currentUserName;
-    this.storageKey = `${this.currentUserName}/${STORAGE_KEY}`;
-    this.projectsPath = Vue.resource(Api.buildUrl(Api.projectsPath));
-  }
-
-  getSearchedProjects(searchQuery) {
-    return this.projectsPath.get({
-      simple: true,
-      per_page: 20,
-      membership: !!gon.current_user_id,
-      order_by: 'last_activity_at',
-      search: searchQuery,
-    });
-  }
-
-  getFrequentProjects() {
-    if (this.isLocalStorageAvailable) {
-      return this.getTopFrequentProjects();
-    }
-    return null;
-  }
-
-  logProjectAccess(project) {
-    let matchFound = false;
-    let storedFrequentProjects;
-
-    if (this.isLocalStorageAvailable) {
-      const storedRawProjects = localStorage.getItem(this.storageKey);
-
-      // Check if there's any frequent projects list set
-      if (!storedRawProjects) {
-        // No frequent projects list set, set one up.
-        storedFrequentProjects = [];
-        storedFrequentProjects.push({ ...project, frequency: 1 });
-      } else {
-        // Check if project is already present in frequents list
-        // When found, update metadata of it.
-        storedFrequentProjects = JSON.parse(storedRawProjects).map(projectItem => {
-          if (projectItem.id === project.id) {
-            matchFound = true;
-            const diff = Math.abs(project.lastAccessedOn - projectItem.lastAccessedOn) / HOUR_IN_MS;
-            const updatedProject = {
-              ...project,
-              frequency: projectItem.frequency,
-              lastAccessedOn: projectItem.lastAccessedOn,
-            };
-
-            // Check if duration since last access of this project
-            // is over an hour
-            if (diff > 1) {
-              return {
-                ...updatedProject,
-                frequency: updatedProject.frequency + 1,
-                lastAccessedOn: Date.now(),
-              };
-            }
-
-            return {
-              ...updatedProject,
-            };
-          }
-
-          return projectItem;
-        });
-
-        // Check whether currently logged project is present in frequents list
-        if (!matchFound) {
-          // We always keep size of frequents collection to 20 projects
-          // out of which only 5 projects with
-          // highest value of `frequency` and most recent `lastAccessedOn`
-          // are shown in projects dropdown
-          if (storedFrequentProjects.length === FREQUENT_PROJECTS.MAX_COUNT) {
-            storedFrequentProjects.shift(); // Remove an item from head of array
-          }
-
-          storedFrequentProjects.push({ ...project, frequency: 1 });
-        }
-      }
-
-      localStorage.setItem(this.storageKey, JSON.stringify(storedFrequentProjects));
-    }
-  }
-
-  getTopFrequentProjects() {
-    const storedFrequentProjects = JSON.parse(localStorage.getItem(this.storageKey));
-    let frequentProjectsCount = FREQUENT_PROJECTS.LIST_COUNT_DESKTOP;
-
-    if (!storedFrequentProjects) {
-      return [];
-    }
-
-    if (bp.getBreakpointSize() === 'sm' || bp.getBreakpointSize() === 'xs') {
-      frequentProjectsCount = FREQUENT_PROJECTS.LIST_COUNT_MOBILE;
-    }
-
-    const frequentProjects = storedFrequentProjects.filter(
-      project => project.frequency >= FREQUENT_PROJECTS.ELIGIBLE_FREQUENCY,
-    );
-
-    if (!frequentProjects || frequentProjects.length === 0) {
-      return [];
-    }
-
-    // Sort all frequent projects in decending order of frequency
-    // and then by lastAccessedOn with recent most first
-    frequentProjects.sort((projectA, projectB) => {
-      if (projectA.frequency < projectB.frequency) {
-        return 1;
-      } else if (projectA.frequency > projectB.frequency) {
-        return -1;
-      } else if (projectA.lastAccessedOn < projectB.lastAccessedOn) {
-        return 1;
-      } else if (projectA.lastAccessedOn > projectB.lastAccessedOn) {
-        return -1;
-      }
-
-      return 0;
-    });
-
-    return _.first(frequentProjects, frequentProjectsCount);
-  }
-}
diff --git a/app/assets/javascripts/projects_dropdown/store/projects_store.js b/app/assets/javascripts/projects_dropdown/store/projects_store.js
deleted file mode 100644
index ffefbe693f4..00000000000
--- a/app/assets/javascripts/projects_dropdown/store/projects_store.js
+++ /dev/null
@@ -1,33 +0,0 @@
-export default class ProjectsStore {
-  constructor() {
-    this.state = {};
-    this.state.frequentProjects = [];
-    this.state.searchedProjects = [];
-  }
-
-  setFrequentProjects(rawProjects) {
-    this.state.frequentProjects = rawProjects;
-  }
-
-  getFrequentProjects() {
-    return this.state.frequentProjects;
-  }
-
-  setSearchedProjects(rawProjects) {
-    this.state.searchedProjects = rawProjects.map(rawProject => ({
-      id: rawProject.id,
-      name: rawProject.name,
-      namespace: rawProject.name_with_namespace,
-      webUrl: rawProject.web_url,
-      avatarUrl: rawProject.avatar_url,
-    }));
-  }
-
-  getSearchedProjects() {
-    return this.state.searchedProjects;
-  }
-
-  clearSearchedProjects() {
-    this.state.searchedProjects = [];
-  }
-}
diff --git a/app/assets/stylesheets/framework/dropdowns.scss b/app/assets/stylesheets/framework/dropdowns.scss
index 74475daae14..c7b5e22c33d 100644
--- a/app/assets/stylesheets/framework/dropdowns.scss
+++ b/app/assets/stylesheets/framework/dropdowns.scss
@@ -36,7 +36,7 @@
       width: 100%;
     }
 
-    &.projects-dropdown-menu {
+    &.frequent-items-dropdown-menu {
       padding: 0;
       overflow-y: initial;
       max-height: initial;
@@ -790,6 +790,7 @@
 @include media-breakpoint-down(xs) {
   .navbar-gitlab {
     li.header-projects,
+    li.header-groups,
     li.header-more,
     li.header-new,
     li.header-user {
@@ -813,18 +814,18 @@
   }
 }
 
-header.header-content .dropdown-menu.projects-dropdown-menu {
+header.header-content .dropdown-menu.frequent-items-dropdown-menu {
   padding: 0;
 }
 
-.projects-dropdown-container {
+.frequent-items-dropdown-container {
   display: flex;
   flex-direction: row;
   width: 500px;
   height: 334px;
 
-  .project-dropdown-sidebar,
-  .project-dropdown-content {
+  .frequent-items-dropdown-sidebar,
+  .frequent-items-dropdown-content {
     padding: 8px 0;
   }
 
@@ -832,12 +833,12 @@ header.header-content .dropdown-menu.projects-dropdown-menu {
     color: $almost-black;
   }
 
-  .project-dropdown-sidebar {
+  .frequent-items-dropdown-sidebar {
     width: 30%;
     border-right: 1px solid $border-color;
   }
 
-  .project-dropdown-content {
+  .frequent-items-dropdown-content {
     position: relative;
     width: 70%;
   }
@@ -848,33 +849,35 @@ header.header-content .dropdown-menu.projects-dropdown-menu {
     height: auto;
     flex: 1;
 
-    .project-dropdown-sidebar,
-    .project-dropdown-content {
+    .frequent-items-dropdown-sidebar,
+    .frequent-items-dropdown-content {
       width: 100%;
     }
 
-    .project-dropdown-sidebar {
+    .frequent-items-dropdown-sidebar {
       border-bottom: 1px solid $border-color;
       border-right: 0;
     }
   }
 
-  .projects-list-frequent-container,
-  .projects-list-search-container {
+  .section-header,
+  .frequent-items-list-container li.section-empty {
+    padding: 0 $gl-padding;
+    color: $gl-text-color-secondary;
+    font-size: $gl-font-size;
+  }
+
+  .frequent-items-list-container {
     padding: 8px 0;
     overflow-y: auto;
 
     li.section-empty.section-failure {
       color: $callout-danger-color;
     }
-  }
 
-  .section-header,
-  .projects-list-frequent-container li.section-empty,
-  .projects-list-search-container li.section-empty {
-    padding: 0 15px;
-    color: $gl-text-color-secondary;
-    font-size: $gl-font-size;
+    .frequent-items-list-item-container a {
+      display: flex;
+    }
   }
 
   .search-input-container {
@@ -894,12 +897,12 @@ header.header-content .dropdown-menu.projects-dropdown-menu {
     margin-top: 8px;
   }
 
-  .projects-list-search-container {
+  .frequent-items-search-container {
     height: 284px;
   }
 
   @include media-breakpoint-down(xs) {
-    .projects-list-frequent-container {
+    .frequent-items-list-container {
       width: auto;
       height: auto;
       padding-bottom: 0;
@@ -907,32 +910,38 @@ header.header-content .dropdown-menu.projects-dropdown-menu {
   }
 }
 
-.projects-list-item-container {
-  .project-item-avatar-container .project-item-metadata-container {
+.frequent-items-list-item-container {
+  .frequent-items-item-avatar-container,
+  .frequent-items-item-metadata-container {
     float: left;
   }
 
-  .project-title,
-  .project-namespace {
+  .frequent-items-item-metadata-container {
+    display: flex;
+    flex-direction: column;
+    justify-content: center;
+  }
+
+  .frequent-items-item-title,
+  .frequent-items-item-namespace {
     max-width: 250px;
-    overflow: hidden;
     text-overflow: ellipsis;
     white-space: nowrap;
   }
 
   &:hover {
-    .project-item-avatar-container .avatar {
+    .frequent-items-item-avatar-container .avatar {
       border-color: $md-area-border;
     }
   }
 
-  .project-title {
+  .frequent-items-item-title {
     font-size: $gl-font-size;
     font-weight: 400;
     line-height: 16px;
   }
 
-  .project-namespace {
+  .frequent-items-item-namespace {
     margin-top: 4px;
     font-size: 12px;
     line-height: 12px;
@@ -940,7 +949,7 @@ header.header-content .dropdown-menu.projects-dropdown-menu {
   }
 
   @include media-breakpoint-down(xs) {
-    .project-item-metadata-container {
+    .frequent-items-item-metadata-container {
       float: none;
     }
   }
diff --git a/app/assets/stylesheets/framework/gitlab_theme.scss b/app/assets/stylesheets/framework/gitlab_theme.scss
index aaa8bed3df0..dff6bce370f 100644
--- a/app/assets/stylesheets/framework/gitlab_theme.scss
+++ b/app/assets/stylesheets/framework/gitlab_theme.scss
@@ -29,15 +29,21 @@
     .navbar-sub-nav,
     .navbar-nav {
       > li {
-        > a:hover,
-        > a:focus {
-          background-color: rgba($search-and-nav-links, 0.2);
+        > a,
+        > button {
+          &:hover,
+          &:focus {
+            background-color: rgba($search-and-nav-links, 0.2);
+          }
         }
 
-        &.active > a,
-        &.dropdown.show > a {
-          color: $nav-svg-color;
-          background-color: $color-alternate;
+        &.active,
+        &.dropdown.show {
+          > a,
+          > button {
+            color: $nav-svg-color;
+            background-color: $color-alternate;
+          }
         }
 
         &.line-separator {
@@ -147,7 +153,6 @@
     }
   }
 
-
   // Sidebar
   .nav-sidebar li.active {
     box-shadow: inset 4px 0 0 $border-and-box-shadow;
diff --git a/app/assets/stylesheets/framework/header.scss b/app/assets/stylesheets/framework/header.scss
index 8bcaf5eb6ac..2097bcebf69 100644
--- a/app/assets/stylesheets/framework/header.scss
+++ b/app/assets/stylesheets/framework/header.scss
@@ -269,14 +269,8 @@
 .navbar-sub-nav,
 .navbar-nav {
   > li {
-    > a:hover,
-    > a:focus {
-      text-decoration: none;
-      outline: 0;
-      color: $white-light;
-    }
-
-    > a {
+    > a,
+    > button {
       display: -webkit-flex;
       display: flex;
       align-items: center;
@@ -288,6 +282,18 @@
       border-radius: $border-radius-default;
       height: 32px;
       font-weight: $gl-font-weight-bold;
+
+      &:hover,
+      &:focus {
+        text-decoration: none;
+        outline: 0;
+        color: $white-light;
+      }
+    }
+
+    > button {
+      background: transparent;
+      border: 0;
     }
 
     &.line-separator {
@@ -311,7 +317,7 @@
     font-size: 10px;
   }
 
-  .project-item-select-holder {
+  .frequent-items-item-select-holder {
     display: inline;
   }