Added droplab back to static assets

23 files changed, 1893 insertions, 31 deletions

diff --git a/app/assets/javascripts/droplab/constants.js b/app/assets/javascripts/droplab/constants.js
new file mode 100644
index 00000000000..a23d914772a
--- /dev/null
+++ b/app/assets/javascripts/droplab/constants.js
@@ -0,0 +1,11 @@
+const DATA_TRIGGER = 'data-dropdown-trigger';
+const DATA_DROPDOWN = 'data-dropdown';
+const SELECTED_CLASS = 'droplab-item-selected';
+const ACTIVE_CLASS = 'droplab-item-active';
+
+export {
+  DATA_TRIGGER,
+  DATA_DROPDOWN,
+  SELECTED_CLASS,
+  ACTIVE_CLASS,
+};
diff --git a/app/assets/javascripts/droplab/drop_down.js b/app/assets/javascripts/droplab/drop_down.js
new file mode 100644
index 00000000000..f686ad33f6f
--- /dev/null
+++ b/app/assets/javascripts/droplab/drop_down.js
@@ -0,0 +1,137 @@
+/* eslint-disable */
+
+import utils from './utils';
+import { SELECTED_CLASS } from './constants';
+
+var DropDown = function(list) {
+  this.currentIndex = 0;
+  this.hidden = true;
+  this.list = typeof list === 'string' ? document.querySelector(list) : list;
+  this.items = [];
+
+  this.eventWrapper = {};
+
+  this.getItems();
+  this.initTemplateString();
+  this.addEvents();
+
+  this.initialState = list.innerHTML;
+};
+
+Object.assign(DropDown.prototype, {
+  getItems: function() {
+    this.items = [].slice.call(this.list.querySelectorAll('li'));
+    return this.items;
+  },
+
+  initTemplateString: function() {
+    var items = this.items || this.getItems();
+
+    var templateString = '';
+    if (items.length > 0) templateString = items[items.length - 1].outerHTML;
+    this.templateString = templateString;
+
+    return this.templateString;
+  },
+
+  clickEvent: function(e) {
+    var selected = utils.closest(e.target, 'LI');
+    if (!selected) return;
+
+    this.addSelectedClass(selected);
+
+    e.preventDefault();
+    this.hide();
+
+    var listEvent = new CustomEvent('click.dl', {
+      detail: {
+        list: this,
+        selected: selected,
+        data: e.target.dataset,
+      },
+    });
+    this.list.dispatchEvent(listEvent);
+  },
+
+  addSelectedClass: function (selected) {
+    this.removeSelectedClasses();
+    selected.classList.add(SELECTED_CLASS);
+  },
+
+  removeSelectedClasses: function () {
+    const items = this.items || this.getItems();
+
+    items.forEach(item => item.classList.remove(SELECTED_CLASS));
+  },
+
+  addEvents: function() {
+    this.eventWrapper.clickEvent = this.clickEvent.bind(this)
+    this.list.addEventListener('click', this.eventWrapper.clickEvent);
+  },
+
+  toggle: function() {
+    this.hidden ? this.show() : this.hide();
+  },
+
+  setData: function(data) {
+    this.data = data;
+    this.render(data);
+  },
+
+  addData: function(data) {
+    this.data = (this.data || []).concat(data);
+    this.render(this.data);
+  },
+
+  render: function(data) {
+    const children = data ? data.map(this.renderChildren.bind(this)) : [];
+    const renderableList = this.list.querySelector('ul[data-dynamic]') || this.list;
+
+    renderableList.innerHTML = children.join('');
+  },
+
+  renderChildren: function(data) {
+    var html = utils.t(this.templateString, data);
+    var template = document.createElement('div');
+
+    template.innerHTML = html;
+    this.setImagesSrc(template);
+    template.firstChild.style.display = data.droplab_hidden ? 'none' : 'block';
+
+    return template.firstChild.outerHTML;
+  },
+
+  setImagesSrc: function(template) {
+    const images = [].slice.call(template.querySelectorAll('img[data-src]'));
+
+    images.forEach((image) => {
+      image.src = image.getAttribute('data-src');
+      image.removeAttribute('data-src');
+    });
+  },
+
+  show: function() {
+    if (!this.hidden) return;
+    this.list.style.display = 'block';
+    this.currentIndex = 0;
+    this.hidden = false;
+  },
+
+  hide: function() {
+    if (this.hidden) return;
+    this.list.style.display = 'none';
+    this.currentIndex = 0;
+    this.hidden = true;
+  },
+
+  toggle: function () {
+    this.hidden ? this.show() : this.hide();
+  },
+
+  destroy: function() {
+    this.hide();
+    this.list.removeEventListener('click', this.eventWrapper.clickEvent);
+  }
+});
+
+export default DropDown;
diff --git a/app/assets/javascripts/droplab/drop_lab.js b/app/assets/javascripts/droplab/drop_lab.js
new file mode 100644
index 00000000000..6eb9f314af7
--- /dev/null
+++ b/app/assets/javascripts/droplab/drop_lab.js
@@ -0,0 +1,152 @@
+/* eslint-disable */
+
+import HookButton from './hook_button';
+import HookInput from './hook_input';
+import utils from './utils';
+import Keyboard from './keyboard';
+import { DATA_TRIGGER } from './constants';
+
+var DropLab = function() {
+  this.ready = false;
+  this.hooks = [];
+  this.queuedData = [];
+  this.config = {};
+
+  this.eventWrapper = {};
+};
+
+Object.assign(DropLab.prototype, {
+  loadStatic: function(){
+    var dropdownTriggers = [].slice.apply(document.querySelectorAll(`[${DATA_TRIGGER}]`));
+    this.addHooks(dropdownTriggers);
+  },
+
+  addData: function () {
+    var args = [].slice.apply(arguments);
+    this.applyArgs(args, '_addData');
+  },
+
+  setData: function() {
+    var args = [].slice.apply(arguments);
+    this.applyArgs(args, '_setData');
+  },
+
+  destroy: function() {
+    this.hooks.forEach(hook => hook.destroy());
+    this.hooks = [];
+    this.removeEvents();
+  },
+
+  applyArgs: function(args, methodName) {
+    if (this.ready) return this[methodName].apply(this, args);
+
+    this.queuedData = this.queuedData || [];
+    this.queuedData.push(args);
+  },
+
+  _addData: function(trigger, data) {
+    this._processData(trigger, data, 'addData');
+  },
+
+  _setData: function(trigger, data) {
+    this._processData(trigger, data, 'setData');
+  },
+
+  _processData: function(trigger, data, methodName) {
+    this.hooks.forEach((hook) => {
+      if (Array.isArray(trigger)) hook.list[methodName](trigger);
+
+      if (hook.trigger.id === trigger) hook.list[methodName](data);
+    });
+  },
+
+  addEvents: function() {
+    this.eventWrapper.documentClicked = this.documentClicked.bind(this)
+    document.addEventListener('click', this.eventWrapper.documentClicked);
+  },
+
+  documentClicked: function(e) {
+    let thisTag = e.target;
+
+    if (thisTag.tagName !== 'UL') thisTag = utils.closest(thisTag, 'UL');
+    if (utils.isDropDownParts(thisTag, this.hooks) || utils.isDropDownParts(e.target, this.hooks)) return;
+
+    this.hooks.forEach(hook => hook.list.hide());
+  },
+
+  removeEvents: function(){
+    document.removeEventListener('click', this.eventWrapper.documentClicked);
+  },
+
+  changeHookList: function(trigger, list, plugins, config) {
+    const availableTrigger =  typeof trigger === 'string' ? document.getElementById(trigger) : trigger;
+
+
+    this.hooks.forEach((hook, i) => {
+      hook.list.list.dataset.dropdownActive = false;
+
+      if (hook.trigger !== availableTrigger) return;
+
+      hook.destroy();
+      this.hooks.splice(i, 1);
+      this.addHook(availableTrigger, list, plugins, config);
+    });
+  },
+
+  addHook: function(hook, list, plugins, config) {
+    const availableHook = typeof hook === 'string' ? document.querySelector(hook) : hook;
+    let availableList;
+
+    if (typeof list === 'string') {
+      availableList = document.querySelector(list);
+    } else if (list instanceof Element) {
+      availableList = list;
+    } else {
+      availableList = document.querySelector(hook.dataset[utils.toCamelCase(DATA_TRIGGER)]);
+    }
+
+    availableList.dataset.dropdownActive = true;
+
+    const HookObject = availableHook.tagName === 'INPUT' ? HookInput : HookButton;
+    this.hooks.push(new HookObject(availableHook, availableList, plugins, config));
+
+    return this;
+  },
+
+  addHooks: function(hooks, plugins, config) {
+    hooks.forEach(hook => this.addHook(hook, null, plugins, config));
+    return this;
+  },
+
+  setConfig: function(obj){
+    this.config = obj;
+  },
+
+  fireReady: function() {
+    const readyEvent = new CustomEvent('ready.dl', {
+      detail: {
+        dropdown: this,
+      },
+    });
+    document.dispatchEvent(readyEvent);
+
+    this.ready = true;
+  },
+
+  init: function (hook, list, plugins, config) {
+    hook ? this.addHook(hook, list, plugins, config) : this.loadStatic();
+
+    this.addEvents();
+
+    Keyboard();
+
+    this.fireReady();
+
+    this.queuedData.forEach(data => this.addData(data));
+    this.queuedData = [];
+
+    return this;
+  },
+});
+
+export default DropLab;
diff --git a/app/assets/javascripts/droplab/hook.js b/app/assets/javascripts/droplab/hook.js
new file mode 100644
index 00000000000..2f840083571
--- /dev/null
+++ b/app/assets/javascripts/droplab/hook.js
@@ -0,0 +1,22 @@
+/* eslint-disable */
+
+import DropDown from './drop_down';
+
+var Hook = function(trigger, list, plugins, config){
+  this.trigger = trigger;
+  this.list = new DropDown(list);
+  this.type = 'Hook';
+  this.event = 'click';
+  this.plugins = plugins || [];
+  this.config = config || {};
+  this.id = trigger.id;
+};
+
+Object.assign(Hook.prototype, {
+
+  addEvents: function(){},
+
+  constructor: Hook,
+});
+
+export default Hook;
diff --git a/app/assets/javascripts/droplab/hook_button.js b/app/assets/javascripts/droplab/hook_button.js
new file mode 100644
index 00000000000..be8aead1303
--- /dev/null
+++ b/app/assets/javascripts/droplab/hook_button.js
@@ -0,0 +1,65 @@
+/* eslint-disable */
+
+import Hook from './hook';
+
+var HookButton = function(trigger, list, plugins, config) {
+  Hook.call(this, trigger, list, plugins, config);
+
+  this.type = 'button';
+  this.event = 'click';
+
+  this.eventWrapper = {};
+
+  this.addEvents();
+  this.addPlugins();
+};
+
+HookButton.prototype = Object.create(Hook.prototype);
+
+Object.assign(HookButton.prototype, {
+  addPlugins: function() {
+    this.plugins.forEach(plugin => plugin.init(this));
+  },
+
+  clicked: function(e){
+    var buttonEvent = new CustomEvent('click.dl', {
+      detail: {
+        hook: this,
+      },
+      bubbles: true,
+      cancelable: true
+    });
+    e.target.dispatchEvent(buttonEvent);
+
+    this.list.toggle();
+  },
+
+  addEvents: function(){
+    this.eventWrapper.clicked = this.clicked.bind(this);
+    this.trigger.addEventListener('click', this.eventWrapper.clicked);
+  },
+
+  removeEvents: function(){
+    this.trigger.removeEventListener('click', this.eventWrapper.clicked);
+  },
+
+  restoreInitialState: function() {
+    this.list.list.innerHTML = this.list.initialState;
+  },
+
+  removePlugins: function() {
+    this.plugins.forEach(plugin => plugin.destroy());
+  },
+
+  destroy: function() {
+    this.restoreInitialState();
+
+    this.removeEvents();
+    this.removePlugins();
+  },
+
+  constructor: HookButton,
+});
+
+
+export default HookButton;
diff --git a/app/assets/javascripts/droplab/hook_input.js b/app/assets/javascripts/droplab/hook_input.js
new file mode 100644
index 00000000000..05082334045
--- /dev/null
+++ b/app/assets/javascripts/droplab/hook_input.js
@@ -0,0 +1,119 @@
+/* eslint-disable */
+
+import Hook from './hook';
+
+var HookInput = function(trigger, list, plugins, config) {
+  Hook.call(this, trigger, list, plugins, config);
+
+  this.type = 'input';
+  this.event = 'input';
+
+  this.eventWrapper = {};
+
+  this.addEvents();
+  this.addPlugins();
+};
+
+Object.assign(HookInput.prototype, {
+  addPlugins: function() {
+    this.plugins.forEach(plugin => plugin.init(this));
+  },
+
+  addEvents: function(){
+    this.eventWrapper.mousedown = this.mousedown.bind(this);
+    this.eventWrapper.input = this.input.bind(this);
+    this.eventWrapper.keyup = this.keyup.bind(this);
+    this.eventWrapper.keydown = this.keydown.bind(this);
+
+    this.trigger.addEventListener('mousedown', this.eventWrapper.mousedown);
+    this.trigger.addEventListener('input', this.eventWrapper.input);
+    this.trigger.addEventListener('keyup', this.eventWrapper.keyup);
+    this.trigger.addEventListener('keydown', this.eventWrapper.keydown);
+  },
+
+  removeEvents: function() {
+    this.hasRemovedEvents = true;
+
+    this.trigger.removeEventListener('mousedown', this.eventWrapper.mousedown);
+    this.trigger.removeEventListener('input', this.eventWrapper.input);
+    this.trigger.removeEventListener('keyup', this.eventWrapper.keyup);
+    this.trigger.removeEventListener('keydown', this.eventWrapper.keydown);
+  },
+
+  input: function(e) {
+    if(this.hasRemovedEvents) return;
+
+    this.list.show();
+
+    const inputEvent = new CustomEvent('input.dl', {
+      detail: {
+        hook: this,
+        text: e.target.value,
+      },
+      bubbles: true,
+      cancelable: true
+    });
+    e.target.dispatchEvent(inputEvent);
+  },
+
+  mousedown: function(e) {
+    if (this.hasRemovedEvents) return;
+
+    const mouseEvent = new CustomEvent('mousedown.dl', {
+      detail: {
+        hook: this,
+        text: e.target.value,
+      },
+      bubbles: true,
+      cancelable: true,
+    });
+    e.target.dispatchEvent(mouseEvent);
+  },
+
+  keyup: function(e) {
+    if (this.hasRemovedEvents) return;
+
+    this.keyEvent(e, 'keyup.dl');
+  },
+
+  keydown: function(e) {
+    if (this.hasRemovedEvents) return;
+
+    this.keyEvent(e, 'keydown.dl');
+  },
+
+  keyEvent: function(e, eventName) {
+    this.list.show();
+
+    const keyEvent = new CustomEvent(eventName, {
+      detail: {
+        hook: this,
+        text: e.target.value,
+        which: e.which,
+        key: e.key,
+      },
+      bubbles: true,
+      cancelable: true,
+    });
+    e.target.dispatchEvent(keyEvent);
+  },
+
+  restoreInitialState: function() {
+    this.list.list.innerHTML = this.list.initialState;
+  },
+
+  removePlugins: function() {
+    this.plugins.forEach(plugin => plugin.destroy());
+  },
+
+  destroy: function() {
+    this.restoreInitialState();
+
+    this.removeEvents();
+    this.removePlugins();
+
+    this.list.destroy();
+  }
+});
+
+export default HookInput;
diff --git a/app/assets/javascripts/droplab/keyboard.js b/app/assets/javascripts/droplab/keyboard.js
new file mode 100644
index 00000000000..36740a430e1
--- /dev/null
+++ b/app/assets/javascripts/droplab/keyboard.js
@@ -0,0 +1,113 @@
+/* eslint-disable */
+
+import { ACTIVE_CLASS } from './constants';
+
+const Keyboard = function () {
+  var currentKey;
+  var currentFocus;
+  var isUpArrow = false;
+  var isDownArrow = false;
+  var removeHighlight = function removeHighlight(list) {
+    var itemElements = Array.prototype.slice.call(list.list.querySelectorAll('li:not(.divider)'), 0);
+    var listItems = [];
+    for(var i = 0; i < itemElements.length; i++) {
+      var listItem = itemElements[i];
+      listItem.classList.remove(ACTIVE_CLASS);
+
+      if (listItem.style.display !== 'none') {
+        listItems.push(listItem);
+      }
+    }
+    return listItems;
+  };
+
+  var setMenuForArrows = function setMenuForArrows(list) {
+    var listItems = removeHighlight(list);
+    if(list.currentIndex>0){
+      if(!listItems[list.currentIndex-1]){
+        list.currentIndex = list.currentIndex-1;
+      }
+
+      if (listItems[list.currentIndex-1]) {
+        var el = listItems[list.currentIndex-1];
+        var filterDropdownEl = el.closest('.filter-dropdown');
+        el.classList.add(ACTIVE_CLASS);
+
+        if (filterDropdownEl) {
+          var filterDropdownBottom = filterDropdownEl.offsetHeight;
+          var elOffsetTop = el.offsetTop - 30;
+
+          if (elOffsetTop > filterDropdownBottom) {
+            filterDropdownEl.scrollTop = elOffsetTop - filterDropdownBottom;
+          }
+        }
+      }
+    }
+  };
+
+  var mousedown = function mousedown(e) {
+    var list = e.detail.hook.list;
+    removeHighlight(list);
+    list.show();
+    list.currentIndex = 0;
+    isUpArrow = false;
+    isDownArrow = false;
+  };
+  var selectItem = function selectItem(list) {
+    var listItems = removeHighlight(list);
+    var currentItem = listItems[list.currentIndex-1];
+    var listEvent = new CustomEvent('click.dl', {
+      detail: {
+        list: list,
+        selected: currentItem,
+        data: currentItem.dataset,
+      },
+    });
+    list.list.dispatchEvent(listEvent);
+    list.hide();
+  }
+
+  var keydown = function keydown(e){
+    var typedOn = e.target;
+    var list = e.detail.hook.list;
+    var currentIndex = list.currentIndex;
+    isUpArrow = false;
+    isDownArrow = false;
+
+    if(e.detail.which){
+      currentKey = e.detail.which;
+      if(currentKey === 13){
+        selectItem(e.detail.hook.list);
+        return;
+      }
+      if(currentKey === 38) {
+        isUpArrow = true;
+      }
+      if(currentKey === 40) {
+        isDownArrow = true;
+      }
+    } else if(e.detail.key) {
+      currentKey = e.detail.key;
+      if(currentKey === 'Enter'){
+        selectItem(e.detail.hook.list);
+        return;
+      }
+      if(currentKey === 'ArrowUp') {
+        isUpArrow = true;
+      }
+      if(currentKey === 'ArrowDown') {
+        isDownArrow = true;
+      }
+    }
+    if(isUpArrow){ currentIndex--; }
+    if(isDownArrow){ currentIndex++; }
+    if(currentIndex < 0){ currentIndex = 0; }
+    list.currentIndex = currentIndex;
+    setMenuForArrows(e.detail.hook.list);
+  };
+
+  document.addEventListener('mousedown.dl', mousedown);
+  document.addEventListener('keydown.dl', keydown);
+};
+
+export default Keyboard;
diff --git a/app/assets/javascripts/droplab/plugins/ajax.js b/app/assets/javascripts/droplab/plugins/ajax.js
new file mode 100644
index 00000000000..f08b638fc62
--- /dev/null
+++ b/app/assets/javascripts/droplab/plugins/ajax.js
@@ -0,0 +1,71 @@
+/* eslint-disable */
+
+function droplabAjaxException(message) {
+  this.message = message;
+}
+
+const Ajax = {
+  _loadUrlData: function _loadUrlData(url) {
+    var self = this;
+    return new Promise(function(resolve, reject) {
+      var xhr = new XMLHttpRequest;
+      xhr.open('GET', url, true);
+      xhr.onreadystatechange = function () {
+        if(xhr.readyState === XMLHttpRequest.DONE) {
+          if (xhr.status === 200) {
+            var data = JSON.parse(xhr.responseText);
+            self.cache[url] = data;
+            return resolve(data);
+          } else {
+            return reject([xhr.responseText, xhr.status]);
+          }
+        }
+      };
+      xhr.send();
+    });
+  },
+  _loadData: function _loadData(data, config, self) {
+    if (config.loadingTemplate) {
+      var dataLoadingTemplate = self.hook.list.list.querySelector('[data-loading-template]');
+      if (dataLoadingTemplate) dataLoadingTemplate.outerHTML = self.listTemplate;
+    }
+
+    if (!self.destroyed) self.hook.list[config.method].call(self.hook.list, data);
+  },
+  init: function init(hook) {
+    var self = this;
+    self.destroyed = false;
+    self.cache = self.cache || {};
+    var config = hook.config.Ajax;
+    this.hook = hook;
+    if (!config || !config.endpoint || !config.method) {
+      return;
+    }
+    if (config.method !== 'setData' && config.method !== 'addData') {
+      return;
+    }
+    if (config.loadingTemplate) {
+      var dynamicList = hook.list.list.querySelector('[data-dynamic]');
+      var loadingTemplate = document.createElement('div');
+      loadingTemplate.innerHTML = config.loadingTemplate;
+      loadingTemplate.setAttribute('data-loading-template', '');
+      this.listTemplate = dynamicList.outerHTML;
+      dynamicList.outerHTML = loadingTemplate.outerHTML;
+    }
+    if (self.cache[config.endpoint]) {
+      self._loadData(self.cache[config.endpoint], config, self);
+    } else {
+      this._loadUrlData(config.endpoint)
+        .then(function(d) {
+          self._loadData(d, config, self);
+        }, config.onError).catch(function(e) {
+          throw new droplabAjaxException(e.message || e);
+        });
+    }
+  },
+  destroy: function() {
+    this.destroyed = true;
+  }
+};
+
+export default Ajax;
diff --git a/app/assets/javascripts/droplab/plugins/ajax_filter.js b/app/assets/javascripts/droplab/plugins/ajax_filter.js
new file mode 100644
index 00000000000..7fe221e101f
--- /dev/null
+++ b/app/assets/javascripts/droplab/plugins/ajax_filter.js
@@ -0,0 +1,133 @@
+/* eslint-disable */
+
+const AjaxFilter = {
+  init: function(hook) {
+    this.destroyed = false;
+    this.hook = hook;
+    this.notLoading();
+
+    this.eventWrapper = {};
+    this.eventWrapper.debounceTrigger = this.debounceTrigger.bind(this);
+    this.hook.trigger.addEventListener('keydown.dl', this.eventWrapper.debounceTrigger);
+    this.hook.trigger.addEventListener('focus', this.eventWrapper.debounceTrigger);
+
+    this.trigger(true);
+  },
+
+  notLoading: function notLoading() {
+    this.loading = false;
+  },
+
+  debounceTrigger: function debounceTrigger(e) {
+    var NON_CHARACTER_KEYS = [16, 17, 18, 20, 37, 38, 39, 40, 91, 93];
+    var invalidKeyPressed = NON_CHARACTER_KEYS.indexOf(e.detail.which || e.detail.keyCode) > -1;
+    var focusEvent = e.type === 'focus';
+    if (invalidKeyPressed || this.loading) {
+      return;
+    }
+    if (this.timeout) {
+      clearTimeout(this.timeout);
+    }
+    this.timeout = setTimeout(this.trigger.bind(this, focusEvent), 200);
+  },
+
+  trigger: function trigger(getEntireList) {
+    var config = this.hook.config.AjaxFilter;
+    var searchValue = this.trigger.value;
+    if (!config || !config.endpoint || !config.searchKey) {
+      return;
+    }
+    if (config.searchValueFunction) {
+      searchValue = config.searchValueFunction();
+    }
+    if (config.loadingTemplate && this.hook.list.data === undefined ||
+      this.hook.list.data.length === 0) {
+      var dynamicList = this.hook.list.list.querySelector('[data-dynamic]');
+      var loadingTemplate = document.createElement('div');
+      loadingTemplate.innerHTML = config.loadingTemplate;
+      loadingTemplate.setAttribute('data-loading-template', true);
+      this.listTemplate = dynamicList.outerHTML;
+      dynamicList.outerHTML = loadingTemplate.outerHTML;
+    }
+    if (getEntireList) {
+      searchValue = '';
+    }
+    if (config.searchKey === searchValue) {
+      return this.list.show();
+    }
+    this.loading = true;
+    var params = config.params || {};
+    params[config.searchKey] = searchValue;
+    var self = this;
+    self.cache = self.cache || {};
+    var url = config.endpoint + this.buildParams(params);
+    var urlCachedData = self.cache[url];
+    if (urlCachedData) {
+      self._loadData(urlCachedData, config, self);
+    } else {
+      this._loadUrlData(url)
+        .then(function(data) {
+          self._loadData(data, config, self);
+        }, config.onError);
+    }
+  },
+
+  _loadUrlData: function _loadUrlData(url) {
+    var self = this;
+    return new Promise(function(resolve, reject) {
+      var xhr = new XMLHttpRequest;
+      xhr.open('GET', url, true);
+      xhr.onreadystatechange = function () {
+        if(xhr.readyState === XMLHttpRequest.DONE) {
+          if (xhr.status === 200) {
+            var data = JSON.parse(xhr.responseText);
+            self.cache[url] = data;
+            return resolve(data);
+          } else {
+            return reject([xhr.responseText, xhr.status]);
+          }
+        }
+      };
+      xhr.send();
+    });
+  },
+
+  _loadData: function _loadData(data, config, self) {
+    const list = self.hook.list;
+    if (config.loadingTemplate && list.data === undefined ||
+      list.data.length === 0) {
+      const dataLoadingTemplate = list.list.querySelector('[data-loading-template]');
+      if (dataLoadingTemplate) {
+        dataLoadingTemplate.outerHTML = self.listTemplate;
+      }
+    }
+    if (!self.destroyed) {
+      var hookListChildren = list.list.children;
+      var onlyDynamicList = hookListChildren.length === 1 && hookListChildren[0].hasAttribute('data-dynamic');
+      if (onlyDynamicList && data.length === 0) {
+        list.hide();
+      }
+      list.setData.call(list, data);
+    }
+    self.notLoading();
+    list.currentIndex = 0;
+  },
+
+  buildParams: function(params) {
+    if (!params) return '';
+    var paramsArray = Object.keys(params).map(function(param) {
+      return param + '=' + (params[param] || '');
+    });
+    return '?' + paramsArray.join('&');
+  },
+
+  destroy: function destroy() {
+    if (this.timeout)clearTimeout(this.timeout);
+    this.destroyed = true;
+
+    this.hook.trigger.removeEventListener('keydown.dl', this.eventWrapper.debounceTrigger);
+    this.hook.trigger.removeEventListener('focus', this.eventWrapper.debounceTrigger);
+  }
+};
+
+export default AjaxFilter;
diff --git a/app/assets/javascripts/droplab/plugins/filter.js b/app/assets/javascripts/droplab/plugins/filter.js
new file mode 100644
index 00000000000..d6a1aadd49c
--- /dev/null
+++ b/app/assets/javascripts/droplab/plugins/filter.js
@@ -0,0 +1,95 @@
+/* eslint-disable */
+
+const Filter = {
+  keydown: function(e){
+    if (this.destroyed) return;
+
+    var hiddenCount = 0;
+    var dataHiddenCount = 0;
+
+    var list = e.detail.hook.list;
+    var data = list.data;
+    var value = e.detail.hook.trigger.value.toLowerCase();
+    var config = e.detail.hook.config.Filter;
+    var matches = [];
+    var filterFunction;
+    // will only work on dynamically set data
+    if(!data){
+      return;
+    }
+
+    if (config && config.filterFunction && typeof config.filterFunction === 'function') {
+      filterFunction = config.filterFunction;
+    } else {
+      filterFunction = function(o){
+        // cheap string search
+        o.droplab_hidden = o[config.template].toLowerCase().indexOf(value) === -1;
+        return o;
+      };
+    }
+
+    dataHiddenCount = data.filter(function(o) {
+      return !o.droplab_hidden;
+    }).length;
+
+    matches = data.map(function(o) {
+      return filterFunction(o, value);
+    });
+
+    hiddenCount = matches.filter(function(o) {
+      return !o.droplab_hidden;
+    }).length;
+
+    if (dataHiddenCount !== hiddenCount) {
+      list.setData(matches);
+      list.currentIndex = 0;
+    }
+  },
+
+  debounceKeydown: function debounceKeydown(e) {
+    if ([
+      13, // enter
+      16, // shift
+      17, // ctrl
+      18, // alt
+      20, // caps lock
+      37, // left arrow
+      38, // up arrow
+      39, // right arrow
+      40, // down arrow
+      91, // left window
+      92, // right window
+      93, // select
+    ].indexOf(e.detail.which || e.detail.keyCode) > -1) return;
+
+    if (this.timeout) clearTimeout(this.timeout);
+    this.timeout = setTimeout(this.keydown.bind(this, e), 200);
+  },
+
+  init: function init(hook) {
+    var config = hook.config.Filter;
+
+    if (!config || !config.template) return;
+
+    this.hook = hook;
+    this.destroyed = false;
+
+    this.eventWrapper = {};
+    this.eventWrapper.debounceKeydown = this.debounceKeydown.bind(this);
+
+    this.hook.trigger.addEventListener('keydown.dl', this.eventWrapper.debounceKeydown);
+    this.hook.trigger.addEventListener('mousedown.dl', this.eventWrapper.debounceKeydown);
+
+    this.debounceKeydown({ detail: { hook: this.hook } });
+  },
+
+  destroy: function destroy() {
+    if (this.timeout) clearTimeout(this.timeout);
+    this.destroyed = true;
+
+    this.hook.trigger.removeEventListener('keydown.dl', this.eventWrapper.debounceKeydown);
+    this.hook.trigger.removeEventListener('mousedown.dl', this.eventWrapper.debounceKeydown);
+  }
+};
+
+export default Filter;
diff --git a/app/assets/javascripts/droplab/plugins/input_setter.js b/app/assets/javascripts/droplab/plugins/input_setter.js
new file mode 100644
index 00000000000..b1716c72810
--- /dev/null
+++ b/app/assets/javascripts/droplab/plugins/input_setter.js
@@ -0,0 +1,51 @@
+/* eslint-disable */
+
+const InputSetter = {
+  init(hook) {
+    this.hook = hook;
+    this.destroyed = false;
+    this.config = hook.config.InputSetter || (this.hook.config.InputSetter = {});
+
+    this.eventWrapper = {};
+
+    this.addEvents();
+  },
+
+  addEvents() {
+    this.eventWrapper.setInputs = this.setInputs.bind(this);
+    this.hook.list.list.addEventListener('click.dl', this.eventWrapper.setInputs);
+  },
+
+  removeEvents() {
+    this.hook.list.list.removeEventListener('click.dl', this.eventWrapper.setInputs);
+  },
+
+  setInputs(e) {
+    if (this.destroyed) return;
+
+    const selectedItem = e.detail.selected;
+
+    if (!Array.isArray(this.config)) this.config = [this.config];
+
+    this.config.forEach(config => this.setInput(config, selectedItem));
+  },
+
+  setInput(config, selectedItem) {
+    const input = config.input || this.hook.trigger;
+    const newValue = selectedItem.getAttribute(config.valueAttribute);
+
+    if (input.tagName === 'INPUT') {
+      input.value = newValue;
+    } else {
+      input.textContent = newValue;
+    }
+  },
+
+  destroy() {
+    this.destroyed = true;
+
+    this.removeEvents();
+  },
+};
+
+export default InputSetter;
diff --git a/app/assets/javascripts/droplab/utils.js b/app/assets/javascripts/droplab/utils.js
new file mode 100644
index 00000000000..c149a33a1e9
--- /dev/null
+++ b/app/assets/javascripts/droplab/utils.js
@@ -0,0 +1,38 @@
+/* eslint-disable */
+
+import { DATA_TRIGGER, DATA_DROPDOWN } from './constants';
+
+const utils = {
+  toCamelCase(attr) {
+    return this.camelize(attr.split('-').slice(1).join(' '));
+  },
+
+  t(s, d) {
+    for (const p in d) {
+      if (Object.prototype.hasOwnProperty.call(d, p)) {
+        s = s.replace(new RegExp(`{{${p}}}`, 'g'), d[p]);
+      }
+    }
+    return s;
+  },
+
+  camelize(str) {
+    return str.replace(/(?:^\w|[A-Z]|\b\w)/g, (letter, index) => {
+      return index === 0 ? letter.toLowerCase() : letter.toUpperCase();
+    }).replace(/\s+/g, '');
+  },
+
+  closest(thisTag, stopTag) {
+    while (thisTag && thisTag.tagName !== stopTag && thisTag.tagName !== 'HTML') {
+      thisTag = thisTag.parentNode;
+    }
+    return thisTag;
+  },
+
+  isDropDownParts(target) {
+    if (!target || target.tagName === 'HTML') return false;
+    return target.hasAttribute(DATA_TRIGGER) || target.hasAttribute(DATA_DROPDOWN);
+  },
+};
+
+export default utils;
diff --git a/app/assets/javascripts/filtered_search/dropdown_hint.js b/app/assets/javascripts/filtered_search/dropdown_hint.js
index 527037c08eb..ede5d65ce12 100644
--- a/app/assets/javascripts/filtered_search/dropdown_hint.js
+++ b/app/assets/javascripts/filtered_search/dropdown_hint.js
@@ -1,4 +1,4 @@
-import Filter from '@gitlab-org/droplab/dist/plugins/Filter';
+import Filter from '~/droplab/plugins/filter';
 
 require('./filtered_search_dropdown');
 
diff --git a/app/assets/javascripts/filtered_search/dropdown_non_user.js b/app/assets/javascripts/filtered_search/dropdown_non_user.js
index 48c2135aca3..35c76dff79a 100644
--- a/app/assets/javascripts/filtered_search/dropdown_non_user.js
+++ b/app/assets/javascripts/filtered_search/dropdown_non_user.js
@@ -1,5 +1,5 @@
-import Ajax from '@gitlab-org/droplab/dist/plugins/Ajax';
-import Filter from '@gitlab-org/droplab/dist/plugins/Filter';
+import Ajax from '~/droplab/plugins/ajax';
+import Filter from '~/droplab/plugins/filter';
 
 require('./filtered_search_dropdown');
 
diff --git a/app/assets/javascripts/filtered_search/dropdown_user.js b/app/assets/javascripts/filtered_search/dropdown_user.js
index 1661a4c5da2..4f9f25c1f1b 100644
--- a/app/assets/javascripts/filtered_search/dropdown_user.js
+++ b/app/assets/javascripts/filtered_search/dropdown_user.js
@@ -1,4 +1,4 @@
-import AjaxFilter from '@gitlab-org/droplab/dist/plugins/AjaxFilter';
+import AjaxFilter from '~/droplab/plugins/ajax_filter';
 
 require('./filtered_search_dropdown');
 
diff --git a/app/assets/javascripts/filtered_search/filtered_search_dropdown_manager.js b/app/assets/javascripts/filtered_search/filtered_search_dropdown_manager.js
index f5d6a85a4da..ec481b9ef97 100644
--- a/app/assets/javascripts/filtered_search/filtered_search_dropdown_manager.js
+++ b/app/assets/javascripts/filtered_search/filtered_search_dropdown_manager.js
@@ -1,4 +1,4 @@
-import DropLab from '@gitlab-org/droplab';
+import DropLab from '~/droplab/drop_lab';
 import FilteredSearchContainer from './container';
 
 (() => {
diff --git a/package.json b/package.json
index c623ca627b5..3f64d65d57a 100644
--- a/package.json
+++ b/package.json
@@ -12,7 +12,6 @@
     "webpack-prod": "NODE_ENV=production webpack --config config/webpack.config.js"
   },
   "dependencies": {
-    "@gitlab-org/droplab": "^0.1.0",
     "babel-core": "^6.22.1",
     "babel-loader": "^6.2.10",
     "babel-plugin-transform-define": "^1.2.0",
diff --git a/spec/javascripts/droplab/constants.js b/spec/javascripts/droplab/constants.js
new file mode 100644
index 00000000000..35239e4fb8e
--- /dev/null
+++ b/spec/javascripts/droplab/constants.js
@@ -0,0 +1,29 @@
+/* eslint-disable */
+
+import * as constants from '~/droplab/constants';
+
+describe('constants', function () {
+  describe('DATA_TRIGGER', function () {
+    it('should be `data-dropdown-trigger`', function() {
+      expect(constants.DATA_TRIGGER).toBe('data-dropdown-trigger');
+    });
+  });
+
+  describe('DATA_DROPDOWN', function () {
+    it('should be `data-dropdown`', function() {
+      expect(constants.DATA_DROPDOWN).toBe('data-dropdown');
+    });
+  });
+
+  describe('SELECTED_CLASS', function () {
+    it('should be `droplab-item-selected`', function() {
+      expect(constants.SELECTED_CLASS).toBe('droplab-item-selected');
+    });
+  });
+
+  describe('ACTIVE_CLASS', function () {
+    it('should be `droplab-item-active`', function() {
+      expect(constants.ACTIVE_CLASS).toBe('droplab-item-active');
+    });
+  });
+});
diff --git a/spec/javascripts/droplab/drop_down.js b/spec/javascripts/droplab/drop_down.js
new file mode 100644
index 00000000000..bbf953658c8
--- /dev/null
+++ b/spec/javascripts/droplab/drop_down.js
@@ -0,0 +1,578 @@
+/* eslint-disable */
+
+import DropDown from '~/droplab/drop_down';
+import utils from '~/droplab/utils';
+import { SELECTED_CLASS } from '~/droplab/constants';
+
+describe('DropDown', function () {
+  describe('class constructor', function () {
+    beforeEach(function () {
+      spyOn(DropDown.prototype, 'getItems');
+      spyOn(DropDown.prototype, 'initTemplateString');
+      spyOn(DropDown.prototype, 'addEvents');
+
+      this.list = { innerHTML: 'innerHTML' };
+      this.dropdown = new DropDown(this.list);
+    });
+
+    it('sets the .hidden property to true', function () {
+      expect(this.dropdown.hidden).toBe(true);
+    })
+
+    it('sets the .list property', function () {
+      expect(this.dropdown.list).toBe(this.list);
+    });
+
+    it('calls .getItems', function () {
+      expect(DropDown.prototype.getItems).toHaveBeenCalled();
+    });
+
+    it('calls .initTemplateString', function () {
+      expect(DropDown.prototype.initTemplateString).toHaveBeenCalled();
+    });
+
+    it('calls .addEvents', function () {
+      expect(DropDown.prototype.addEvents).toHaveBeenCalled();
+    });
+
+    it('sets the .initialState property to the .list.innerHTML', function () {
+      expect(this.dropdown.initialState).toBe(this.list.innerHTML);
+    });
+
+    describe('if the list argument is a string', function () {
+      beforeEach(function () {
+        this.element = {};
+        this.selector = '.selector';
+
+        spyOn(Document.prototype, 'querySelector').and.returnValue(this.element);
+
+        this.dropdown = new DropDown(this.selector);
+      });
+
+      it('calls .querySelector with the selector string', function () {
+        expect(Document.prototype.querySelector).toHaveBeenCalledWith(this.selector);
+      });
+
+      it('sets the .list property element', function () {
+        expect(this.dropdown.list).toBe(this.element);
+      });
+    });
+  });
+
+  describe('getItems', function () {
+    beforeEach(function () {
+      this.list = { querySelectorAll: () => {} };
+      this.dropdown = { list: this.list };
+      this.nodeList = [];
+
+      spyOn(this.list, 'querySelectorAll').and.returnValue(this.nodeList);
+
+      this.getItems = DropDown.prototype.getItems.call(this.dropdown);
+    });
+
+    it('calls .querySelectorAll with a list item query', function () {
+      expect(this.list.querySelectorAll).toHaveBeenCalledWith('li');
+    });
+
+    it('sets the .items property to the returned list items', function () {
+      expect(this.dropdown.items).toEqual(jasmine.any(Array));
+    });
+
+    it('returns the .items', function () {
+      expect(this.getItems).toEqual(jasmine.any(Array));
+    });
+  });
+
+  describe('initTemplateString', function () {
+    beforeEach(function () {
+      this.items = [{ outerHTML: '<a></a>' }, { outerHTML: '<img>' }];
+      this.dropdown = { items: this.items };
+
+      DropDown.prototype.initTemplateString.call(this.dropdown);
+    });
+
+    it('should set .templateString to the last items .outerHTML', function () {
+      expect(this.dropdown.templateString).toBe(this.items[1].outerHTML);
+    });
+
+    it('should not set .templateString to a non-last items .outerHTML', function () {
+      expect(this.dropdown.templateString).not.toBe(this.items[0].outerHTML);
+    });
+
+    describe('if .items is not set', function () {
+      beforeEach(function () {
+        this.dropdown = { getItems: () => {} };
+
+        spyOn(this.dropdown, 'getItems').and.returnValue([]);
+
+        DropDown.prototype.initTemplateString.call(this.dropdown);
+      });
+
+      it('should call .getItems', function () {
+        expect(this.dropdown.getItems).toHaveBeenCalled();
+      });
+    });
+
+    describe('if items array is empty', function () {
+      beforeEach(function () {
+        this.dropdown = { items: [] };
+
+        DropDown.prototype.initTemplateString.call(this.dropdown);
+      });
+
+      it('should set .templateString to an empty string', function () {
+        expect(this.dropdown.templateString).toBe('');
+      });
+    });
+  });
+
+  describe('clickEvent', function () {
+    beforeEach(function () {
+      this.list = { dispatchEvent: () => {} };
+      this.dropdown = { hide: () => {}, list: this.list, addSelectedClass: () => {} };
+      this.event = { preventDefault: () => {}, target: 'target' };
+      this.customEvent = {};
+      this.closestElement = {};
+
+      spyOn(this.dropdown, 'hide');
+      spyOn(this.dropdown, 'addSelectedClass');
+      spyOn(this.list, 'dispatchEvent');
+      spyOn(this.event, 'preventDefault');
+      spyOn(window, 'CustomEvent').and.returnValue(this.customEvent);
+      spyOn(utils, 'closest').and.returnValues(this.closestElement, undefined);
+
+      DropDown.prototype.clickEvent.call(this.dropdown, this.event);
+    });
+
+    it('should call utils.closest', function () {
+      expect(utils.closest).toHaveBeenCalledWith(this.event.target, 'LI');
+    });
+
+    it('should call addSelectedClass', function () {
+      expect(this.dropdown.addSelectedClass).toHaveBeenCalledWith(this.closestElement);
+    })
+
+    it('should call .preventDefault', function () {
+      expect(this.event.preventDefault).toHaveBeenCalled();
+    });
+
+    it('should call .hide', function () {
+      expect(this.dropdown.hide).toHaveBeenCalled();
+    });
+
+    it('should construct CustomEvent', function () {
+      expect(window.CustomEvent).toHaveBeenCalledWith('click.dl', jasmine.any(Object));
+    });
+
+    it('should call .dispatchEvent with the customEvent', function () {
+      expect(this.list.dispatchEvent).toHaveBeenCalledWith(this.customEvent);
+    });
+
+    describe('if no selected element exists', function () {
+      beforeEach(function () {
+        this.event.preventDefault.calls.reset();
+        this.clickEvent = DropDown.prototype.clickEvent.call(this.dropdown, this.event);
+      });
+
+      it('should return undefined', function () {
+        expect(this.clickEvent).toBe(undefined);
+      });
+
+      it('should return before .preventDefault is called', function () {
+        expect(this.event.preventDefault).not.toHaveBeenCalled();
+      });
+    });
+  });
+
+  describe('addSelectedClass', function () {
+    beforeEach(function () {
+      this.items = Array(4).forEach((item, i) => {
+        this.items[i] = { classList: { add: () => {} } };
+        spyOn(this.items[i].classList, 'add');
+      });
+      this.selected = { classList: { add: () => {} } };
+      this.dropdown = { removeSelectedClasses: () => {} };
+
+      spyOn(this.dropdown, 'removeSelectedClasses');
+      spyOn(this.selected.classList, 'add');
+
+      DropDown.prototype.addSelectedClass.call(this.dropdown, this.selected);
+    });
+
+    it('should call .removeSelectedClasses', function () {
+      expect(this.dropdown.removeSelectedClasses).toHaveBeenCalled();
+    });
+
+    it('should call .classList.add', function () {
+      expect(this.selected.classList.add).toHaveBeenCalledWith(SELECTED_CLASS);
+    });
+  });
+
+  describe('removeSelectedClasses', function () {
+    beforeEach(function () {
+      this.items = Array(4);
+      this.items.forEach((item, i) => {
+        this.items[i] = { classList: { add: () => {} } };
+        spyOn(this.items[i].classList, 'add');
+      });
+      this.dropdown = { items: this.items };
+
+      DropDown.prototype.removeSelectedClasses.call(this.dropdown);
+    });
+
+    it('should call .classList.remove for all items', function () {
+      this.items.forEach((item, i) => {
+        expect(this.items[i].classList.add).toHaveBeenCalledWith(SELECTED_CLASS);
+      });
+    });
+
+    describe('if .items is not set', function () {
+      beforeEach(function () {
+        this.dropdown = { getItems: () => {} };
+
+        spyOn(this.dropdown, 'getItems').and.returnValue([]);
+
+        DropDown.prototype.removeSelectedClasses.call(this.dropdown);
+      });
+
+      it('should call .getItems', function () {
+        expect(this.dropdown.getItems).toHaveBeenCalled();
+      });
+    });
+  });
+
+  describe('addEvents', function () {
+    beforeEach(function () {
+      this.list = { addEventListener: () => {} };
+      this.dropdown = { list: this.list, clickEvent: () => {}, eventWrapper: {} };
+
+      spyOn(this.list, 'addEventListener');
+
+      DropDown.prototype.addEvents.call(this.dropdown);
+    });
+
+    it('should call .addEventListener', function () {
+      expect(this.list.addEventListener).toHaveBeenCalledWith('click', jasmine.any(Function));
+    });
+  });
+
+  describe('toggle', function () {
+    beforeEach(function () {
+      this.dropdown = { hidden: true, show: () => {}, hide: () => {} };
+
+      spyOn(this.dropdown, 'show');
+      spyOn(this.dropdown, 'hide');
+
+      DropDown.prototype.toggle.call(this.dropdown);
+    });
+
+    it('should call .show if hidden is true', function () {
+      expect(this.dropdown.show).toHaveBeenCalled();
+    });
+
+    describe('if hidden is false', function () {
+      beforeEach(function () {
+        this.dropdown = { hidden: false, show: () => {}, hide: () => {} };
+
+        spyOn(this.dropdown, 'show');
+        spyOn(this.dropdown, 'hide');
+
+        DropDown.prototype.toggle.call(this.dropdown);
+      });
+
+      it('should call .show if hidden is true', function () {
+        expect(this.dropdown.hide).toHaveBeenCalled();
+      });
+    });
+  });
+
+  describe('setData', function () {
+    beforeEach(function () {
+      this.dropdown = { render: () => {} };
+      this.data = ['data'];
+
+      spyOn(this.dropdown, 'render');
+
+      DropDown.prototype.setData.call(this.dropdown, this.data);
+    });
+
+    it('should set .data', function () {
+      expect(this.dropdown.data).toBe(this.data);
+    });
+
+    it('should call .render with the .data', function () {
+      expect(this.dropdown.render).toHaveBeenCalledWith(this.data);
+    });
+  });
+
+  describe('addData', function () {
+    beforeEach(function () {
+      this.dropdown = { render: () => {}, data: ['data1'] };
+      this.data = ['data2'];
+
+      spyOn(this.dropdown, 'render');
+      spyOn(Array.prototype, 'concat').and.callThrough();
+
+      DropDown.prototype.addData.call(this.dropdown, this.data);
+    });
+
+    it('should call .concat with data', function () {
+      expect(Array.prototype.concat).toHaveBeenCalledWith(this.data);
+    });
+
+    it('should set .data with concatination', function () {
+      expect(this.dropdown.data).toEqual(['data1', 'data2']);
+    });
+
+    it('should call .render with the .data', function () {
+      expect(this.dropdown.render).toHaveBeenCalledWith(['data1', 'data2']);
+    });
+
+    describe('if .data is undefined', function () {
+      beforeEach(function () {
+        this.dropdown = { render: () => {}, data: undefined };
+        this.data = ['data2'];
+
+        spyOn(this.dropdown, 'render');
+
+        DropDown.prototype.addData.call(this.dropdown, this.data);
+      });
+
+      it('should set .data with concatination', function () {
+        expect(this.dropdown.data).toEqual(['data2']);
+      });
+    });
+  });
+
+  describe('render', function () {
+    beforeEach(function () {
+      this.list = { querySelector: () => {} };
+      this.dropdown = { renderChildren: () => {}, list: this.list };
+      this.renderableList = {};
+      this.data = [0, 1];
+
+      spyOn(this.dropdown, 'renderChildren').and.callFake(data => data);
+      spyOn(this.list, 'querySelector').and.returnValue(this.renderableList);
+      spyOn(this.data, 'map').and.callThrough();
+
+      DropDown.prototype.render.call(this.dropdown, this.data);
+    });
+
+    it('should call .map', function () {
+      expect(this.data.map).toHaveBeenCalledWith(jasmine.any(Function));
+    });
+
+    it('should call .renderChildren for each data item', function() {
+      expect(this.dropdown.renderChildren.calls.count()).toBe(this.data.length);
+    });
+
+    it('sets the renderableList .innerHTML', function () {
+      expect(this.renderableList.innerHTML).toBe('01');
+    });
+
+    describe('if no data argument is passed' , function () {
+      beforeEach(function () {
+        this.data.map.calls.reset();
+        this.dropdown.renderChildren.calls.reset();
+
+        DropDown.prototype.render.call(this.dropdown, undefined);
+      });
+
+      it('should not call .map', function () {
+        expect(this.data.map).not.toHaveBeenCalled();
+      });
+
+      it('should not call .renderChildren', function () {
+        expect(this.dropdown.renderChildren).not.toHaveBeenCalled();
+      });
+    });
+
+    describe('if no dynamic list is present', function () {
+      beforeEach(function () {
+        this.list = { querySelector: () => {} };
+        this.dropdown = { renderChildren: () => {}, list: this.list };
+        this.data = [0, 1];
+
+        spyOn(this.dropdown, 'renderChildren').and.callFake(data => data);
+        spyOn(this.list, 'querySelector');
+        spyOn(this.data, 'map').and.callThrough();
+
+        DropDown.prototype.render.call(this.dropdown, this.data);
+      });
+
+      it('sets the .list .innerHTML', function () {
+        expect(this.list.innerHTML).toBe('01');
+      });
+    });
+  });
+
+  describe('renderChildren', function () {
+    beforeEach(function () {
+      this.templateString = 'templateString';
+      this.dropdown = { setImagesSrc: () => {}, templateString: this.templateString };
+      this.data = { droplab_hidden: true };
+      this.html = 'html';
+      this.template = { firstChild: { outerHTML: 'outerHTML', style: {} } };
+
+      spyOn(utils, 't').and.returnValue(this.html);
+      spyOn(document, 'createElement').and.returnValue(this.template);
+      spyOn(this.dropdown, 'setImagesSrc');
+
+      this.renderChildren = DropDown.prototype.renderChildren.call(this.dropdown, this.data);
+    });
+
+    it('should call utils.t with .templateString and data', function () {
+      expect(utils.t).toHaveBeenCalledWith(this.templateString, this.data);
+    });
+
+    it('should call document.createElement', function () {
+      expect(document.createElement).toHaveBeenCalledWith('div');
+    });
+
+    it('should set the templates .innerHTML to the HTML', function () {
+      expect(this.template.innerHTML).toBe(this.html);
+    });
+
+    it('should call .setImagesSrc with the template', function () {
+      expect(this.dropdown.setImagesSrc).toHaveBeenCalledWith(this.template);
+    });
+
+    it('should set the template display to none', function () {
+      expect(this.template.firstChild.style.display).toBe('none');
+    });
+
+    it('should return the templates .firstChild.outerHTML', function () {
+      expect(this.renderChildren).toBe(this.template.firstChild.outerHTML);
+    });
+
+    describe('if droplab_hidden is false', function () {
+      beforeEach(function () {
+        this.data = { droplab_hidden: false };
+        this.renderChildren = DropDown.prototype.renderChildren.call(this.dropdown, this.data);
+      });
+
+      it('should set the template display to block', function () {
+        expect(this.template.firstChild.style.display).toBe('block');
+      });
+    });
+  });
+
+  describe('setImagesSrc', function () {
+    beforeEach(function () {
+      this.dropdown = {};
+      this.template = { querySelectorAll: () => {} };
+
+      spyOn(this.template, 'querySelectorAll').and.returnValue([]);
+
+      DropDown.prototype.setImagesSrc.call(this.dropdown, this.template);
+    });
+
+    it('should call .querySelectorAll', function () {
+      expect(this.template.querySelectorAll).toHaveBeenCalledWith('img[data-src]');
+    });
+  });
+
+  describe('show', function () {
+    beforeEach(function () {
+      this.list = { style: {} };
+      this.dropdown = { list: this.list, hidden: true };
+
+      DropDown.prototype.show.call(this.dropdown);
+    });
+
+    it('it should set .list display to block', function () {
+      expect(this.list.style.display).toBe('block');
+    });
+
+    it('it should set .hidden to false', function () {
+      expect(this.dropdown.hidden).toBe(false);
+    });
+
+    describe('if .hidden is false', function () {
+      beforeEach(function () {
+        this.list = { style: {} };
+        this.dropdown = { list: this.list, hidden: false };
+
+        this.show = DropDown.prototype.show.call(this.dropdown);
+      });
+
+      it('should return undefined', function () {
+        expect(this.show).toEqual(undefined);
+      });
+
+      it('should not set .list display to block', function () {
+        expect(this.list.style.display).not.toEqual('block');
+      });
+    });
+  });
+
+  describe('hide', function () {
+    beforeEach(function () {
+      this.list = { style: {} };
+      this.dropdown = { list: this.list };
+
+      DropDown.prototype.hide.call(this.dropdown);
+    });
+
+    it('it should set .list display to none', function () {
+      expect(this.list.style.display).toBe('none');
+    });
+
+    it('it should set .hidden to true', function () {
+      expect(this.dropdown.hidden).toBe(true);
+    });
+  });
+
+  describe('toggle', function () {
+    beforeEach(function () {
+      this.hidden = true
+      this.dropdown = { hidden: this.hidden, show: () => {}, hide: () => {} };
+
+      spyOn(this.dropdown, 'show');
+      spyOn(this.dropdown, 'hide');
+
+      DropDown.prototype.toggle.call(this.dropdown);
+    });
+
+    it('should call .show', function () {
+      expect(this.dropdown.show).toHaveBeenCalled();
+    });
+
+    describe('if .hidden is false', function () {
+      beforeEach(function () {
+        this.hidden = false
+        this.dropdown = { hidden: this.hidden, show: () => {}, hide: () => {} };
+
+        spyOn(this.dropdown, 'show');
+        spyOn(this.dropdown, 'hide');
+
+        DropDown.prototype.toggle.call(this.dropdown);
+      });
+
+      it('should call .hide', function () {
+        expect(this.dropdown.hide).toHaveBeenCalled();
+      });
+    });
+  });
+
+  describe('destroy', function () {
+    beforeEach(function () {
+      this.list = { removeEventListener: () => {} };
+      this.eventWrapper = { clickEvent: 'clickEvent' };
+      this.dropdown = { list: this.list, hide: () => {}, eventWrapper: this.eventWrapper };
+
+      spyOn(this.list, 'removeEventListener');
+      spyOn(this.dropdown, 'hide');
+
+      DropDown.prototype.destroy.call(this.dropdown);
+    });
+
+    it('it should call .hide', function () {
+      expect(this.dropdown.hide).toHaveBeenCalled();
+    });
+
+    it('it should call .removeEventListener', function () {
+      expect(this.list.removeEventListener).toHaveBeenCalledWith('click', this.eventWrapper.clickEvent);
+    });
+  });
+});
diff --git a/spec/javascripts/droplab/hook.js b/spec/javascripts/droplab/hook.js
new file mode 100644
index 00000000000..8ebdcdd1404
--- /dev/null
+++ b/spec/javascripts/droplab/hook.js
@@ -0,0 +1,82 @@
+/* eslint-disable */
+
+import Hook from '~/droplab/hook';
+import * as dropdownSrc from '~/droplab/drop_down';
+
+describe('Hook', function () {
+  describe('class constructor', function () {
+    beforeEach(function () {
+      this.trigger = { id: 'id' };
+      this.list = {};
+      this.plugins = {};
+      this.config = {};
+      this.dropdown = {};
+
+      spyOn(dropdownSrc, 'default').and.returnValue(this.dropdown);
+
+      this.hook = new Hook(this.trigger, this.list, this.plugins, this.config);
+    });
+
+    it('should set .trigger', function () {
+      expect(this.hook.trigger).toBe(this.trigger);
+    });
+
+    it('should set .list', function () {
+      expect(this.hook.list).toBe(this.dropdown);
+    });
+
+    it('should call DropDown constructor', function () {
+      expect(dropdownSrc.default).toHaveBeenCalledWith(this.list);
+    });
+
+    it('should set .type', function () {
+      expect(this.hook.type).toBe('Hook');
+    });
+
+    it('should set .event', function () {
+      expect(this.hook.event).toBe('click');
+    });
+
+    it('should set .plugins', function () {
+      expect(this.hook.plugins).toBe(this.plugins);
+    });
+
+    it('should set .config', function () {
+      expect(this.hook.config).toBe(this.config);
+    });
+
+    it('should set .id', function () {
+      expect(this.hook.id).toBe(this.trigger.id);
+    });
+
+    describe('if config argument is undefined', function () {
+      beforeEach(function () {
+        this.config = undefined;
+
+        this.hook = new Hook(this.trigger, this.list, this.plugins, this.config);
+      });
+
+      it('should set .config to an empty object', function () {
+        expect(this.hook.config).toEqual({});
+      });
+    });
+
+    describe('if plugins argument is undefined', function () {
+      beforeEach(function () {
+        this.plugins = undefined;
+
+        this.hook = new Hook(this.trigger, this.list, this.plugins, this.config);
+      });
+
+      it('should set .plugins to an empty array', function () {
+        expect(this.hook.plugins).toEqual([]);
+      });
+    });
+  });
+
+  describe('addEvents', function () {
+    it('should exist', function () {
+      expect(Hook.prototype.hasOwnProperty('addEvents')).toBe(true);
+    });
+  });
+});
diff --git a/spec/javascripts/droplab/plugins/input_setter.js b/spec/javascripts/droplab/plugins/input_setter.js
new file mode 100644
index 00000000000..81bb70fa6e5
--- /dev/null
+++ b/spec/javascripts/droplab/plugins/input_setter.js
@@ -0,0 +1,177 @@
+/* eslint-disable */
+
+import InputSetter from '~/droplab/plugins/input_setter';
+
+describe('InputSetter', function () {
+  describe('init', function () {
+    beforeEach(function () {
+      this.config = { InputSetter: {} };
+      this.hook = { config: this.config };
+      this.inputSetter = jasmine.createSpyObj('inputSetter', ['addEvents']);
+
+      InputSetter.init.call(this.inputSetter, this.hook);
+    });
+
+    it('should set .hook', function () {
+      expect(this.inputSetter.hook).toBe(this.hook);
+    });
+
+    it('should set .config', function () {
+      expect(this.inputSetter.config).toBe(this.config.InputSetter);
+    });
+
+    it('should set .eventWrapper', function () {
+      expect(this.inputSetter.eventWrapper).toEqual({});
+    });
+
+    it('should call .addEvents', function () {
+      expect(this.inputSetter.addEvents).toHaveBeenCalled();
+    });
+
+    describe('if config.InputSetter is not set', function () {
+      beforeEach(function () {
+        this.config = { InputSetter: undefined };
+        this.hook = { config: this.config };
+
+        InputSetter.init.call(this.inputSetter, this.hook);
+      });
+
+      it('should set .config to an empty object', function () {
+        expect(this.inputSetter.config).toEqual({});
+      });
+
+      it('should set hook.config to an empty object', function () {
+        expect(this.hook.config.InputSetter).toEqual({});
+      });
+    })
+  });
+
+  describe('addEvents', function () {
+    beforeEach(function () {
+      this.hook = { list: { list: jasmine.createSpyObj('list', ['addEventListener']) } };
+      this.inputSetter = { eventWrapper: {}, hook: this.hook, setInputs: () => {} };
+
+      InputSetter.addEvents.call(this.inputSetter);
+    });
+
+    it('should set .eventWrapper.setInputs', function () {
+      expect(this.inputSetter.eventWrapper.setInputs).toEqual(jasmine.any(Function));
+    });
+
+    it('should call .addEventListener', function () {
+      expect(this.hook.list.list.addEventListener)
+        .toHaveBeenCalledWith('click.dl', this.inputSetter.eventWrapper.setInputs);
+    });
+  });
+
+  describe('removeEvents', function () {
+    beforeEach(function () {
+      this.hook = { list: { list: jasmine.createSpyObj('list', ['removeEventListener']) } };
+      this.eventWrapper = jasmine.createSpyObj('eventWrapper', ['setInputs']);
+      this.inputSetter = { eventWrapper: this.eventWrapper, hook: this.hook };
+
+      InputSetter.removeEvents.call(this.inputSetter);
+    });
+
+    it('should call .removeEventListener', function () {
+      expect(this.hook.list.list.removeEventListener)
+        .toHaveBeenCalledWith('click.dl', this.eventWrapper.setInputs);
+    });
+  });
+
+  describe('setInputs', function () {
+    beforeEach(function () {
+      this.event = { detail: { selected: {} } };
+      this.config = [0, 1];
+      this.inputSetter = { config: this.config, setInput: () => {} };
+
+      spyOn(this.inputSetter, 'setInput');
+
+      InputSetter.setInputs.call(this.inputSetter, this.event);
+    });
+
+    it('should call .setInput for each config element', function () {
+      const allArgs = this.inputSetter.setInput.calls.allArgs();
+
+      expect(allArgs.length).toEqual(2);
+
+      allArgs.forEach((args, i) => {
+        expect(args[0]).toBe(this.config[i]);
+        expect(args[1]).toBe(this.event.detail.selected);
+      });
+    });
+
+    describe('if config isnt an array', function () {
+      beforeEach(function () {
+        this.inputSetter = { config: {}, setInput: () => {} };
+
+        InputSetter.setInputs.call(this.inputSetter, this.event);
+      });
+
+      it('should set .config to an array with .config as the first element', function () {
+        expect(this.inputSetter.config).toEqual([{}]);
+      });
+    });
+  });
+
+  describe('setInput', function () {
+    beforeEach(function () {
+      this.selectedItem = { getAttribute: () => {} };
+      this.input = { value: 'oldValue', tagName: 'INPUT' };
+      this.config = { valueAttribute: {}, input: this.input };
+      this.inputSetter = { hook: { trigger: {} } };
+      this.newValue = 'newValue';
+
+      spyOn(this.selectedItem, 'getAttribute').and.returnValue(this.newValue);
+
+      InputSetter.setInput.call(this.inputSetter, this.config, this.selectedItem);
+    });
+
+    it('should call .getAttribute', function () {
+      expect(this.selectedItem.getAttribute).toHaveBeenCalledWith(this.config.valueAttribute);
+    });
+
+    it('should set the value of the input', function () {
+      expect(this.input.value).toBe(this.newValue);
+    })
+
+    describe('if no config.input is provided', function () {
+      beforeEach(function () {
+        this.config = { valueAttribute: {} };
+        this.trigger = { value: 'oldValue', tagName: 'INPUT' };
+        this.inputSetter = { hook: { trigger: this.trigger } };
+
+        InputSetter.setInput.call(this.inputSetter, this.config, this.selectedItem);
+      });
+
+      it('should set the value of the hook.trigger', function () {
+        expect(this.trigger.value).toBe(this.newValue);
+      });
+    });
+
+    describe('if the input tag is not INPUT', function () {
+      beforeEach(function () {
+        this.input = { textContent: 'oldValue', tagName: 'SPAN' };
+        this.config = { valueAttribute: {}, input: this.input };
+
+        InputSetter.setInput.call(this.inputSetter, this.config, this.selectedItem);
+      });
+
+      it('should set the textContent of the input', function () {
+        expect(this.config.input.textContent).toBe(this.newValue);
+      });
+    });
+  });
+
+  describe('destroy', function () {
+    beforeEach(function () {
+      this.inputSetter = jasmine.createSpyObj('inputSetter', ['removeEvents']);
+
+      InputSetter.destroy.call(this.inputSetter);
+    });
+
+    it('should call .removeEvents', function () {
+      expect(this.inputSetter.removeEvents).toHaveBeenCalled();
+    });
+  });
+});
diff --git a/spec/javascripts/filtered_search/dropdown_user_spec.js b/spec/javascripts/filtered_search/dropdown_user_spec.js
index c16f77c53a2..2b1fe5e3eef 100644
--- a/spec/javascripts/filtered_search/dropdown_user_spec.js
+++ b/spec/javascripts/filtered_search/dropdown_user_spec.js
@@ -33,7 +33,7 @@ require('~/filtered_search/dropdown_user');
       });
     });
 
-    describe('config droplabAjaxFilter\'s endpoint', () => {
+    describe('config AjaxFilter\'s endpoint', () => {
       beforeEach(() => {
         spyOn(gl.DropdownUser.prototype, 'bindEvents').and.callFake(() => {});
         spyOn(gl.DropdownUser.prototype, 'getProjectId').and.callFake(() => {});
@@ -45,13 +45,13 @@ require('~/filtered_search/dropdown_user');
         };
         const dropdown = new gl.DropdownUser();
 
-        expect(dropdown.config.droplabAjaxFilter.endpoint).toBe('/autocomplete/users.json');
+        expect(dropdown.config.AjaxFilter.endpoint).toBe('/autocomplete/users.json');
       });
 
       it('should return endpoint when relative_url_root is undefined', () => {
         const dropdown = new gl.DropdownUser();
 
-        expect(dropdown.config.droplabAjaxFilter.endpoint).toBe('/autocomplete/users.json');
+        expect(dropdown.config.AjaxFilter.endpoint).toBe('/autocomplete/users.json');
       });
 
       it('should return endpoint with relative url when available', () => {
@@ -60,7 +60,7 @@ require('~/filtered_search/dropdown_user');
         };
         const dropdown = new gl.DropdownUser();
 
-        expect(dropdown.config.droplabAjaxFilter.endpoint).toBe('/gitlab_directory/autocomplete/users.json');
+        expect(dropdown.config.AjaxFilter.endpoint).toBe('/gitlab_directory/autocomplete/users.json');
       });
 
       afterEach(() => {
diff --git a/yarn.lock b/yarn.lock
index 96584a6d111..ea639fa0523 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -2,12 +2,6 @@
 # yarn lockfile v1
 
 
-"@gitlab-org/droplab@^0.1.0":
-  version "0.1.0"
-  resolved "https://registry.yarnpkg.com/@gitlab-org/droplab/-/droplab-0.1.0.tgz#934889d0f19417198e277415fdd336616b2e2c87"
-  dependencies:
-    custom-event-polyfill "^0.3.0"
-
 abbrev@1, abbrev@1.0.x:
   version "1.0.9"
   resolved "https://registry.yarnpkg.com/abbrev/-/abbrev-1.0.9.tgz#91b4792588a7738c25f35dd6f63752a2f8776135"
@@ -1307,10 +1301,6 @@ crypto-browserify@^3.11.0:
     public-encrypt "^4.0.0"
     randombytes "^2.0.0"
 
-custom-event-polyfill@^0.3.0:
-  version "0.3.0"
-  resolved "https://registry.yarnpkg.com/custom-event-polyfill/-/custom-event-polyfill-0.3.0.tgz#99807839be62edb446b645832e0d80ead6fa1888"
-
 custom-event@~1.0.0:
   version "1.0.1"
   resolved "https://registry.yarnpkg.com/custom-event/-/custom-event-1.0.1.tgz#5d02a46850adf1b4a317946a3928fccb5bfd0425"
@@ -3773,7 +3763,7 @@ read-pkg@^1.0.0:
     normalize-package-data "^2.3.2"
     path-type "^1.0.0"
 
-"readable-stream@^2.0.0 || ^1.1.13", readable-stream@^2.0.1, readable-stream@^2.0.2, readable-stream@^2.0.5, readable-stream@^2.1.4, readable-stream@^2.2.2, readable-stream@^2.2.6:
+"readable-stream@^2.0.0 || ^1.1.13", readable-stream@^2.0.2, readable-stream@^2.1.4, readable-stream@^2.2.2, readable-stream@^2.2.6:
   version "2.2.6"
   resolved "https://registry.yarnpkg.com/readable-stream/-/readable-stream-2.2.6.tgz#8b43aed76e71483938d12a8d46c6cf1a00b1f816"
   dependencies:
@@ -3785,16 +3775,7 @@ read-pkg@^1.0.0:
     string_decoder "~0.10.x"
     util-deprecate "~1.0.1"
 
-readable-stream@~1.0.2:
-  version "1.0.34"
-  resolved "https://registry.yarnpkg.com/readable-stream/-/readable-stream-1.0.34.tgz#125820e34bc842d2f2aaafafe4c2916ee32c157c"
-  dependencies:
-    core-util-is "~1.0.0"
-    inherits "~2.0.1"
-    isarray "0.0.1"
-    string_decoder "~0.10.x"
-
-readable-stream@~2.0.0, readable-stream@~2.0.6:
+readable-stream@^2.0.1, readable-stream@^2.0.5, readable-stream@~2.0.0, readable-stream@~2.0.6:
   version "2.0.6"
   resolved "https://registry.yarnpkg.com/readable-stream/-/readable-stream-2.0.6.tgz#8f90341e68a53ccc928788dacfcd11b36eb9b78e"
   dependencies:
@@ -3805,6 +3786,15 @@ readable-stream@~2.0.0, readable-stream@~2.0.6:
     string_decoder "~0.10.x"
     util-deprecate "~1.0.1"
 
+readable-stream@~1.0.2:
+  version "1.0.34"
+  resolved "https://registry.yarnpkg.com/readable-stream/-/readable-stream-1.0.34.tgz#125820e34bc842d2f2aaafafe4c2916ee32c157c"
+  dependencies:
+    core-util-is "~1.0.0"
+    inherits "~2.0.1"
+    isarray "0.0.1"
+    string_decoder "~0.10.x"
+
 readdirp@^2.0.0:
   version "2.1.0"
   resolved "https://registry.yarnpkg.com/readdirp/-/readdirp-2.1.0.tgz#4ed0ad060df3073300c48440373f72d1cc642d78"