Added droplab back to static assets

12 files changed, 1007 insertions, 0 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;