2089 lines
58 KiB
JavaScript
2089 lines
58 KiB
JavaScript
import Fuse from 'fuse.js';
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import merge from 'deepmerge';
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import './lib/delegate-events';
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import Store from './store/store';
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import {
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Dropdown,
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Container,
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Input,
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List,
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WrappedInput,
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WrappedSelect,
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} from './components';
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import { DEFAULT_CONFIG, EVENTS, KEY_CODES } from './constants';
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import { TEMPLATES } from './templates';
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import {
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addChoice,
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filterChoices,
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activateChoices,
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clearChoices,
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} from './actions/choices';
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import { addItem, removeItem, highlightItem } from './actions/items';
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import { addGroup } from './actions/groups';
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import { clearAll, resetTo } from './actions/misc';
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import { setIsLoading } from './actions/general';
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import {
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isScrolledIntoView,
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getAdjacentEl,
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getType,
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isType,
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strToEl,
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sortByScore,
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generateId,
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findAncestorByAttrName,
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fetchFromObject,
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isIE11,
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existsInArray,
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cloneObject,
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diff,
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} from './lib/utils';
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/**
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* Choices
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* @author Josh Johnson<josh@joshuajohnson.co.uk>
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*/
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class Choices {
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constructor(element = '[data-choice]', userConfig = {}) {
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if (isType('String', element)) {
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const elements = Array.from(document.querySelectorAll(element));
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// If there are multiple elements, create a new instance
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// for each element besides the first one (as that already has an instance)
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if (elements.length > 1) {
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return this._generateInstances(elements, userConfig);
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}
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}
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this.config = merge.all(
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[DEFAULT_CONFIG, Choices.userDefaults, userConfig],
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// When merging array configs, replace with a copy of the userConfig array,
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// instead of concatenating with the default array
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{ arrayMerge: (destinationArray, sourceArray) => [...sourceArray] },
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);
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const invalidConfigOptions = diff(this.config, DEFAULT_CONFIG);
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if (invalidConfigOptions.length) {
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console.warn(
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'Unknown config option(s) passed',
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invalidConfigOptions.join(', '),
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);
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}
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if (!['auto', 'always'].includes(this.config.renderSelectedChoices)) {
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this.config.renderSelectedChoices = 'auto';
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}
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// Retrieve triggering element (i.e. element with 'data-choice' trigger)
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const passedElement = isType('String', element)
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? document.querySelector(element)
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: element;
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if (!passedElement) {
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return console.error(
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'Could not find passed element or passed element was of an invalid type',
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);
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}
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this._isTextElement = passedElement.type === 'text';
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this._isSelectOneElement = passedElement.type === 'select-one';
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this._isSelectMultipleElement = passedElement.type === 'select-multiple';
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this._isSelectElement =
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this._isSelectOneElement || this._isSelectMultipleElement;
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if (this._isTextElement) {
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this.passedElement = new WrappedInput({
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element: passedElement,
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classNames: this.config.classNames,
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delimiter: this.config.delimiter,
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});
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} else if (this._isSelectElement) {
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this.passedElement = new WrappedSelect({
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element: passedElement,
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classNames: this.config.classNames,
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template: data => this.config.templates.option(data),
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});
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}
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if (!this.passedElement) {
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return console.error('Passed element was of an invalid type');
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}
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if (
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this.config.shouldSortItems === true &&
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this._isSelectOneElement &&
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!this.config.silent
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) {
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console.warn(
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"shouldSortElements: Type of passed element is 'select-one', falling back to false.",
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);
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}
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this.initialised = false;
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this._store = new Store(this.render);
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this._initialState = {};
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this._currentState = {};
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this._prevState = {};
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this._currentValue = '';
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this._canSearch = this.config.searchEnabled;
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this._isScrollingOnIe = false;
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this._highlightPosition = 0;
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this._wasTap = true;
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this._placeholderValue = this._generatePlaceholderValue();
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this._baseId = generateId(this.passedElement.element, 'choices-');
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this._direction = this.passedElement.element.getAttribute('dir') || 'ltr';
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this._idNames = {
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itemChoice: 'item-choice',
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};
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// Assign preset choices from passed object
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this._presetChoices = this.config.choices;
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// Assign preset items from passed object first
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this._presetItems = this.config.items;
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// Then add any values passed from attribute
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if (this.passedElement.value) {
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this._presetItems = this._presetItems.concat(
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this.passedElement.value.split(this.config.delimiter),
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);
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}
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this._render = this._render.bind(this);
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this._onFocus = this._onFocus.bind(this);
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this._onBlur = this._onBlur.bind(this);
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this._onKeyUp = this._onKeyUp.bind(this);
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this._onKeyDown = this._onKeyDown.bind(this);
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this._onClick = this._onClick.bind(this);
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this._onTouchMove = this._onTouchMove.bind(this);
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this._onTouchEnd = this._onTouchEnd.bind(this);
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this._onMouseDown = this._onMouseDown.bind(this);
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this._onMouseOver = this._onMouseOver.bind(this);
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this._onFormReset = this._onFormReset.bind(this);
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this._onAKey = this._onAKey.bind(this);
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this._onEnterKey = this._onEnterKey.bind(this);
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this._onEscapeKey = this._onEscapeKey.bind(this);
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this._onDirectionKey = this._onDirectionKey.bind(this);
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this._onDeleteKey = this._onDeleteKey.bind(this);
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// If element has already been initialised with Choices, fail silently
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if (this.passedElement.element.getAttribute('data-choice') === 'active') {
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console.warn(
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'Trying to initialise Choices on element already initialised',
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);
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}
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// Let's go
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this.init();
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}
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/* ========================================
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= Public functions =
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======================================== */
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init() {
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if (this.initialised) {
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return;
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}
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this._createTemplates();
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this._createElements();
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this._createStructure();
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// Set initial state (We need to clone the state because some reducers
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// modify the inner objects properties in the state) 🤢
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this._initialState = cloneObject(this._store.state);
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this._store.subscribe(this._render);
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this._render();
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this._addEventListeners();
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const shouldDisable =
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!this.config.addItems ||
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this.passedElement.element.hasAttribute('disabled');
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if (shouldDisable) {
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this.disable();
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}
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this.initialised = true;
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const { callbackOnInit } = this.config;
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// Run callback if it is a function
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if (callbackOnInit && isType('Function', callbackOnInit)) {
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callbackOnInit.call(this);
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}
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}
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destroy() {
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if (!this.initialised) {
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return;
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}
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this._removeEventListeners();
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this.passedElement.reveal();
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this.containerOuter.unwrap(this.passedElement.element);
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if (this._isSelectElement) {
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this.passedElement.options = this._presetChoices;
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}
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this.clearStore();
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this.config.templates = null;
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this.initialised = false;
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}
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enable() {
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if (this.passedElement.isDisabled) {
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this.passedElement.enable();
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}
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if (this.containerOuter.isDisabled) {
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this._addEventListeners();
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this.input.enable();
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this.containerOuter.enable();
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}
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return this;
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}
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disable() {
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if (!this.passedElement.isDisabled) {
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this.passedElement.disable();
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}
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if (!this.containerOuter.isDisabled) {
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this._removeEventListeners();
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this.input.disable();
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this.containerOuter.disable();
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}
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return this;
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}
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highlightItem(item, runEvent = true) {
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if (!item) {
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return this;
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}
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const { id, groupId = -1, value = '', label = '' } = item;
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const group = groupId >= 0 ? this._store.getGroupById(groupId) : null;
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this._store.dispatch(highlightItem(id, true));
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if (runEvent) {
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this.passedElement.triggerEvent(EVENTS.highlightItem, {
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id,
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value,
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label,
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groupValue: group && group.value ? group.value : null,
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});
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}
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return this;
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}
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unhighlightItem(item) {
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if (!item) {
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return this;
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}
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const { id, groupId = -1, value = '', label = '' } = item;
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const group = groupId >= 0 ? this._store.getGroupById(groupId) : null;
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this._store.dispatch(highlightItem(id, false));
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this.passedElement.triggerEvent(EVENTS.highlightItem, {
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id,
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value,
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label,
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groupValue: group && group.value ? group.value : null,
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});
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return this;
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}
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highlightAll() {
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this._store.items.forEach(item => this.highlightItem(item));
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return this;
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}
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unhighlightAll() {
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this._store.items.forEach(item => this.unhighlightItem(item));
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return this;
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}
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removeActiveItemsByValue(value) {
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this._store.activeItems
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.filter(item => item.value === value)
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.forEach(item => this._removeItem(item));
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return this;
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}
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removeActiveItems(excludedId) {
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this._store.activeItems
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.filter(({ id }) => id !== excludedId)
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.forEach(item => this._removeItem(item));
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return this;
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}
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removeHighlightedItems(runEvent = false) {
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this._store.highlightedActiveItems.forEach(item => {
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this._removeItem(item);
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// If this action was performed by the user
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// trigger the event
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if (runEvent) {
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this._triggerChange(item.value);
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}
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});
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return this;
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}
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showDropdown(preventInputFocus) {
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if (this.dropdown.isActive) {
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return this;
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}
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requestAnimationFrame(() => {
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this.dropdown.show();
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this.containerOuter.open(this.dropdown.distanceFromTopWindow());
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if (!preventInputFocus && this._canSearch) {
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this.input.focus();
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}
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this.passedElement.triggerEvent(EVENTS.showDropdown, {});
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});
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return this;
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}
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hideDropdown(preventInputBlur) {
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if (!this.dropdown.isActive) {
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return this;
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}
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requestAnimationFrame(() => {
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this.dropdown.hide();
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this.containerOuter.close();
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if (!preventInputBlur && this._canSearch) {
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this.input.removeActiveDescendant();
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this.input.blur();
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}
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this.passedElement.triggerEvent(EVENTS.hideDropdown, {});
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});
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return this;
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}
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getValue(valueOnly = false) {
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const values = this._store.activeItems.reduce((selectedItems, item) => {
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const itemValue = valueOnly ? item.value : item;
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selectedItems.push(itemValue);
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return selectedItems;
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}, []);
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return this._isSelectOneElement ? values[0] : values;
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}
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setValue(args) {
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if (!this.initialised) {
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return this;
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}
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[...args].forEach(value => this._setChoiceOrItem(value));
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return this;
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}
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setChoiceByValue(value) {
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if (!this.initialised || this._isTextElement) {
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return this;
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}
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// If only one value has been passed, convert to array
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const choiceValue = isType('Array', value) ? value : [value];
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// Loop through each value and
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choiceValue.forEach(val => this._findAndSelectChoiceByValue(val));
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return this;
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}
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setChoices(choices = [], value = '', label = '', replaceChoices = false) {
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if (!this._isSelectElement || !value) {
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return this;
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}
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// Clear choices if needed
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if (replaceChoices) {
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this.clearChoices();
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}
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this.containerOuter.removeLoadingState();
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const addGroupsAndChoices = groupOrChoice => {
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if (groupOrChoice.choices) {
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this._addGroup({
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group: groupOrChoice,
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id: groupOrChoice.id || null,
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valueKey: value,
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labelKey: label,
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});
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} else {
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this._addChoice({
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value: groupOrChoice[value],
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label: groupOrChoice[label],
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isSelected: groupOrChoice.selected,
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isDisabled: groupOrChoice.disabled,
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customProperties: groupOrChoice.customProperties,
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placeholder: groupOrChoice.placeholder,
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});
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}
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};
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this._setLoading(true);
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choices.forEach(addGroupsAndChoices);
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this._setLoading(false);
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return this;
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}
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clearChoices() {
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this._store.dispatch(clearChoices());
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}
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clearStore() {
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this._store.dispatch(clearAll());
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return this;
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}
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clearInput() {
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const shouldSetInputWidth = !this._isSelectOneElement;
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this.input.clear(shouldSetInputWidth);
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if (!this._isTextElement && this._canSearch) {
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this._isSearching = false;
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this._store.dispatch(activateChoices(true));
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}
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return this;
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}
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ajax(fn) {
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if (!this.initialised || !this._isSelectElement || !fn) {
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return this;
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}
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requestAnimationFrame(() => this._handleLoadingState(true));
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fn(this._ajaxCallback());
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return this;
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}
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/* ===== End of Public functions ====== */
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/* =============================================
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= Private functions =
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============================================= */
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_render() {
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if (this._store.isLoading()) {
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return;
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}
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this._currentState = this._store.state;
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const stateChanged =
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this._currentState.choices !== this._prevState.choices ||
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this._currentState.groups !== this._prevState.groups ||
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this._currentState.items !== this._prevState.items;
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const shouldRenderChoices = this._isSelectElement;
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const shouldRenderItems =
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this._currentState.items !== this._prevState.items;
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if (!stateChanged) {
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return;
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}
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if (shouldRenderChoices) {
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this._renderChoices();
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}
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if (shouldRenderItems) {
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this._renderItems();
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}
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this._prevState = this._currentState;
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}
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_renderChoices() {
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const { activeGroups, activeChoices } = this._store;
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let choiceListFragment = document.createDocumentFragment();
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this.choiceList.clear();
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if (this.config.resetScrollPosition) {
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requestAnimationFrame(() => this.choiceList.scrollToTop());
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}
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// If we have grouped options
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if (activeGroups.length >= 1 && !this._isSearching) {
|
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// If we have a placeholder choice along with groups
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const activePlaceholders = activeChoices.filter(
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activeChoice =>
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activeChoice.placeholder === true && activeChoice.groupId === -1,
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);
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if (activePlaceholders.length >= 1) {
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choiceListFragment = this._createChoicesFragment(
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activePlaceholders,
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choiceListFragment,
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);
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}
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choiceListFragment = this._createGroupsFragment(
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activeGroups,
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activeChoices,
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choiceListFragment,
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);
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} else if (activeChoices.length >= 1) {
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choiceListFragment = this._createChoicesFragment(
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activeChoices,
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choiceListFragment,
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);
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}
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// If we have choices to show
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if (
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choiceListFragment.childNodes &&
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choiceListFragment.childNodes.length > 0
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) {
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const { activeItems } = this._store;
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const canAddItem = this._canAddItem(activeItems, this.input.value);
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|
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// ...and we can select them
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if (canAddItem.response) {
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// ...append them and highlight the first choice
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this.choiceList.append(choiceListFragment);
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this._highlightChoice();
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} else {
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// ...otherwise show a notice
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this.choiceList.append(this._getTemplate('notice', canAddItem.notice));
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}
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} else {
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// Otherwise show a notice
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let dropdownItem;
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let notice;
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if (this._isSearching) {
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notice = isType('Function', this.config.noResultsText)
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? this.config.noResultsText()
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: this.config.noResultsText;
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dropdownItem = this._getTemplate('notice', notice, 'no-results');
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} else {
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notice = isType('Function', this.config.noChoicesText)
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? this.config.noChoicesText()
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: this.config.noChoicesText;
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dropdownItem = this._getTemplate('notice', notice, 'no-choices');
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}
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this.choiceList.append(dropdownItem);
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}
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}
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|
_renderItems() {
|
|
const activeItems = this._store.activeItems || [];
|
|
this.itemList.clear();
|
|
|
|
// Create a fragment to store our list items
|
|
// (so we don't have to update the DOM for each item)
|
|
const itemListFragment = this._createItemsFragment(activeItems);
|
|
|
|
// If we have items to add, append them
|
|
if (itemListFragment.childNodes) {
|
|
this.itemList.append(itemListFragment);
|
|
}
|
|
}
|
|
|
|
_createGroupsFragment(groups, choices, fragment) {
|
|
const groupFragment = fragment || document.createDocumentFragment();
|
|
const getGroupChoices = group =>
|
|
choices.filter(choice => {
|
|
if (this._isSelectOneElement) {
|
|
return choice.groupId === group.id;
|
|
}
|
|
return (
|
|
choice.groupId === group.id &&
|
|
(this.config.renderSelectedChoices === 'always' || !choice.selected)
|
|
);
|
|
});
|
|
|
|
// If sorting is enabled, filter groups
|
|
if (this.config.shouldSort) {
|
|
groups.sort(this.config.sortFn);
|
|
}
|
|
|
|
groups.forEach(group => {
|
|
const groupChoices = getGroupChoices(group);
|
|
if (groupChoices.length >= 1) {
|
|
const dropdownGroup = this._getTemplate('choiceGroup', group);
|
|
groupFragment.appendChild(dropdownGroup);
|
|
this._createChoicesFragment(groupChoices, groupFragment, true);
|
|
}
|
|
});
|
|
|
|
return groupFragment;
|
|
}
|
|
|
|
_createChoicesFragment(choices, fragment, withinGroup = false) {
|
|
// Create a fragment to store our list items (so we don't have to update the DOM for each item)
|
|
const choicesFragment = fragment || document.createDocumentFragment();
|
|
const {
|
|
renderSelectedChoices,
|
|
searchResultLimit,
|
|
renderChoiceLimit,
|
|
} = this.config;
|
|
const filter = this._isSearching ? sortByScore : this.config.sortFn;
|
|
const appendChoice = choice => {
|
|
const shouldRender =
|
|
renderSelectedChoices === 'auto'
|
|
? this._isSelectOneElement || !choice.selected
|
|
: true;
|
|
if (shouldRender) {
|
|
const dropdownItem = this._getTemplate(
|
|
'choice',
|
|
choice,
|
|
this.config.itemSelectText,
|
|
);
|
|
choicesFragment.appendChild(dropdownItem);
|
|
}
|
|
};
|
|
|
|
let rendererableChoices = choices;
|
|
|
|
if (renderSelectedChoices === 'auto' && !this._isSelectOneElement) {
|
|
rendererableChoices = choices.filter(choice => !choice.selected);
|
|
}
|
|
|
|
// Split array into placeholders and "normal" choices
|
|
const { placeholderChoices, normalChoices } = rendererableChoices.reduce(
|
|
(acc, choice) => {
|
|
if (choice.placeholder) {
|
|
acc.placeholderChoices.push(choice);
|
|
} else {
|
|
acc.normalChoices.push(choice);
|
|
}
|
|
return acc;
|
|
},
|
|
{ placeholderChoices: [], normalChoices: [] },
|
|
);
|
|
|
|
// If sorting is enabled or the user is searching, filter choices
|
|
if (this.config.shouldSort || this._isSearching) {
|
|
normalChoices.sort(filter);
|
|
}
|
|
|
|
let choiceLimit = rendererableChoices.length;
|
|
|
|
// Prepend placeholeder
|
|
const sortedChoices = [...placeholderChoices, ...normalChoices];
|
|
|
|
if (this._isSearching) {
|
|
choiceLimit = searchResultLimit;
|
|
} else if (renderChoiceLimit > 0 && !withinGroup) {
|
|
choiceLimit = renderChoiceLimit;
|
|
}
|
|
|
|
// Add each choice to dropdown within range
|
|
for (let i = 0; i < choiceLimit; i += 1) {
|
|
if (sortedChoices[i]) {
|
|
appendChoice(sortedChoices[i]);
|
|
}
|
|
}
|
|
|
|
return choicesFragment;
|
|
}
|
|
|
|
_createItemsFragment(items, fragment = null) {
|
|
// Create fragment to add elements to
|
|
const { shouldSortItems, sortFn, removeItemButton } = this.config;
|
|
const itemListFragment = fragment || document.createDocumentFragment();
|
|
|
|
// If sorting is enabled, filter items
|
|
if (shouldSortItems && !this._isSelectOneElement) {
|
|
items.sort(sortFn);
|
|
}
|
|
|
|
if (this._isTextElement) {
|
|
// Update the value of the hidden input
|
|
this.passedElement.value = items;
|
|
} else {
|
|
// Update the options of the hidden input
|
|
this.passedElement.options = items;
|
|
}
|
|
|
|
const addItemToFragment = item => {
|
|
// Create new list element
|
|
const listItem = this._getTemplate('item', item, removeItemButton);
|
|
// Append it to list
|
|
itemListFragment.appendChild(listItem);
|
|
};
|
|
|
|
// Add each list item to list
|
|
items.forEach(item => addItemToFragment(item));
|
|
|
|
return itemListFragment;
|
|
}
|
|
|
|
_triggerChange(value) {
|
|
if (value === undefined || value === null) {
|
|
return;
|
|
}
|
|
|
|
this.passedElement.triggerEvent(EVENTS.change, {
|
|
value,
|
|
});
|
|
}
|
|
|
|
_selectPlaceholderChoice() {
|
|
const { placeholderChoice } = this._store;
|
|
|
|
if (placeholderChoice) {
|
|
this._addItem({
|
|
value: placeholderChoice.value,
|
|
label: placeholderChoice.label,
|
|
choiceId: placeholderChoice.id,
|
|
groupId: placeholderChoice.groupId,
|
|
placeholder: placeholderChoice.placeholder,
|
|
});
|
|
|
|
this._triggerChange(placeholderChoice.value);
|
|
}
|
|
}
|
|
|
|
_handleButtonAction(activeItems, element) {
|
|
if (
|
|
!activeItems ||
|
|
!element ||
|
|
!this.config.removeItems ||
|
|
!this.config.removeItemButton
|
|
) {
|
|
return;
|
|
}
|
|
|
|
const itemId = element.parentNode.getAttribute('data-id');
|
|
const itemToRemove = activeItems.find(
|
|
item => item.id === parseInt(itemId, 10),
|
|
);
|
|
|
|
// Remove item associated with button
|
|
this._removeItem(itemToRemove);
|
|
this._triggerChange(itemToRemove.value);
|
|
|
|
if (this._isSelectOneElement) {
|
|
this._selectPlaceholderChoice();
|
|
}
|
|
}
|
|
|
|
_handleItemAction(activeItems, element, hasShiftKey = false) {
|
|
if (
|
|
!activeItems ||
|
|
!element ||
|
|
!this.config.removeItems ||
|
|
this._isSelectOneElement
|
|
) {
|
|
return;
|
|
}
|
|
|
|
const passedId = element.getAttribute('data-id');
|
|
|
|
// We only want to select one item with a click
|
|
// so we deselect any items that aren't the target
|
|
// unless shift is being pressed
|
|
activeItems.forEach(item => {
|
|
if (item.id === parseInt(passedId, 10) && !item.highlighted) {
|
|
this.highlightItem(item);
|
|
} else if (!hasShiftKey && item.highlighted) {
|
|
this.unhighlightItem(item);
|
|
}
|
|
});
|
|
|
|
// Focus input as without focus, a user cannot do anything with a
|
|
// highlighted item
|
|
this.input.focus();
|
|
}
|
|
|
|
_handleChoiceAction(activeItems, element) {
|
|
if (!activeItems || !element) {
|
|
return;
|
|
}
|
|
|
|
// If we are clicking on an option
|
|
const id = element.getAttribute('data-id');
|
|
const choice = this._store.getChoiceById(id);
|
|
const passedKeyCode =
|
|
activeItems[0] && activeItems[0].keyCode ? activeItems[0].keyCode : null;
|
|
const hasActiveDropdown = this.dropdown.isActive;
|
|
|
|
// Update choice keyCode
|
|
choice.keyCode = passedKeyCode;
|
|
|
|
this.passedElement.triggerEvent(EVENTS.choice, {
|
|
choice,
|
|
});
|
|
|
|
if (choice && !choice.selected && !choice.disabled) {
|
|
const canAddItem = this._canAddItem(activeItems, choice.value);
|
|
|
|
if (canAddItem.response) {
|
|
this._addItem({
|
|
value: choice.value,
|
|
label: choice.label,
|
|
choiceId: choice.id,
|
|
groupId: choice.groupId,
|
|
customProperties: choice.customProperties,
|
|
placeholder: choice.placeholder,
|
|
keyCode: choice.keyCode,
|
|
});
|
|
|
|
this._triggerChange(choice.value);
|
|
}
|
|
}
|
|
|
|
this.clearInput();
|
|
|
|
// We wont to close the dropdown if we are dealing with a single select box
|
|
if (hasActiveDropdown && this._isSelectOneElement) {
|
|
this.hideDropdown(true);
|
|
this.containerOuter.focus();
|
|
}
|
|
}
|
|
|
|
_handleBackspace(activeItems) {
|
|
if (!this.config.removeItems || !activeItems) {
|
|
return;
|
|
}
|
|
|
|
const lastItem = activeItems[activeItems.length - 1];
|
|
const hasHighlightedItems = activeItems.some(item => item.highlighted);
|
|
|
|
// If editing the last item is allowed and there are not other selected items,
|
|
// we can edit the item value. Otherwise if we can remove items, remove all selected items
|
|
if (this.config.editItems && !hasHighlightedItems && lastItem) {
|
|
this.input.value = lastItem.value;
|
|
this.input.setWidth();
|
|
this._removeItem(lastItem);
|
|
this._triggerChange(lastItem.value);
|
|
} else {
|
|
if (!hasHighlightedItems) {
|
|
// Highlight last item if none already highlighted
|
|
this.highlightItem(lastItem, false);
|
|
}
|
|
this.removeHighlightedItems(true);
|
|
}
|
|
}
|
|
|
|
_setLoading(isLoading) {
|
|
this._store.dispatch(setIsLoading(isLoading));
|
|
}
|
|
|
|
_handleLoadingState(setLoading = true) {
|
|
let placeholderItem = this.itemList.getChild(
|
|
`.${this.config.classNames.placeholder}`,
|
|
);
|
|
|
|
if (setLoading) {
|
|
this.disable();
|
|
this.containerOuter.addLoadingState();
|
|
|
|
if (this._isSelectOneElement) {
|
|
if (!placeholderItem) {
|
|
placeholderItem = this._getTemplate(
|
|
'placeholder',
|
|
this.config.loadingText,
|
|
);
|
|
this.itemList.append(placeholderItem);
|
|
} else {
|
|
placeholderItem.innerHTML = this.config.loadingText;
|
|
}
|
|
} else {
|
|
this.input.placeholder = this.config.loadingText;
|
|
}
|
|
} else {
|
|
this.enable();
|
|
this.containerOuter.removeLoadingState();
|
|
|
|
if (this._isSelectOneElement) {
|
|
placeholderItem.innerHTML = this._placeholderValue || '';
|
|
} else {
|
|
this.input.placeholder = this._placeholderValue || '';
|
|
}
|
|
}
|
|
}
|
|
|
|
_handleSearch(value) {
|
|
if (!value || !this.input.isFocussed) {
|
|
return;
|
|
}
|
|
|
|
const { choices } = this._store;
|
|
const { searchFloor, searchChoices } = this.config;
|
|
const hasUnactiveChoices = choices.some(option => !option.active);
|
|
|
|
// Check that we have a value to search and the input was an alphanumeric character
|
|
if (value && value.length >= searchFloor) {
|
|
const resultCount = searchChoices ? this._searchChoices(value) : 0;
|
|
// Trigger search event
|
|
this.passedElement.triggerEvent(EVENTS.search, {
|
|
value,
|
|
resultCount,
|
|
});
|
|
} else if (hasUnactiveChoices) {
|
|
// Otherwise reset choices to active
|
|
this._isSearching = false;
|
|
this._store.dispatch(activateChoices(true));
|
|
}
|
|
}
|
|
|
|
_canAddItem(activeItems, value) {
|
|
let canAddItem = true;
|
|
let notice = isType('Function', this.config.addItemText)
|
|
? this.config.addItemText(value)
|
|
: this.config.addItemText;
|
|
|
|
if (!this._isSelectOneElement) {
|
|
const isDuplicateValue = existsInArray(activeItems, value);
|
|
|
|
if (
|
|
this.config.maxItemCount > 0 &&
|
|
this.config.maxItemCount <= activeItems.length
|
|
) {
|
|
// If there is a max entry limit and we have reached that limit
|
|
// don't update
|
|
canAddItem = false;
|
|
notice = isType('Function', this.config.maxItemText)
|
|
? this.config.maxItemText(this.config.maxItemCount)
|
|
: this.config.maxItemText;
|
|
}
|
|
|
|
if (
|
|
!this.config.duplicateItemsAllowed &&
|
|
isDuplicateValue &&
|
|
canAddItem
|
|
) {
|
|
canAddItem = false;
|
|
notice = isType('Function', this.config.uniqueItemText)
|
|
? this.config.uniqueItemText(value)
|
|
: this.config.uniqueItemText;
|
|
}
|
|
|
|
if (
|
|
this._isTextElement &&
|
|
this.config.addItems &&
|
|
canAddItem &&
|
|
isType('Function', this.config.addItemFilterFn) &&
|
|
!this.config.addItemFilterFn(value)
|
|
) {
|
|
canAddItem = false;
|
|
notice = isType('Function', this.config.customAddItemText)
|
|
? this.config.customAddItemText(value)
|
|
: this.config.customAddItemText;
|
|
}
|
|
}
|
|
|
|
return {
|
|
response: canAddItem,
|
|
notice,
|
|
};
|
|
}
|
|
|
|
_ajaxCallback() {
|
|
return (results, value, label) => {
|
|
if (!results || !value) {
|
|
return;
|
|
}
|
|
|
|
const parsedResults = isType('Object', results) ? [results] : results;
|
|
|
|
if (
|
|
parsedResults &&
|
|
isType('Array', parsedResults) &&
|
|
parsedResults.length
|
|
) {
|
|
// Remove loading states/text
|
|
this._handleLoadingState(false);
|
|
this._setLoading(true);
|
|
// Add each result as a choice
|
|
parsedResults.forEach(result => {
|
|
if (result.choices) {
|
|
this._addGroup({
|
|
group: result,
|
|
id: result.id || null,
|
|
valueKey: value,
|
|
labelKey: label,
|
|
});
|
|
} else {
|
|
this._addChoice({
|
|
value: fetchFromObject(result, value),
|
|
label: fetchFromObject(result, label),
|
|
isSelected: result.selected,
|
|
isDisabled: result.disabled,
|
|
customProperties: result.customProperties,
|
|
placeholder: result.placeholder,
|
|
});
|
|
}
|
|
});
|
|
|
|
this._setLoading(false);
|
|
|
|
if (this._isSelectOneElement) {
|
|
this._selectPlaceholderChoice();
|
|
}
|
|
} else {
|
|
// No results, remove loading state
|
|
this._handleLoadingState(false);
|
|
}
|
|
};
|
|
}
|
|
|
|
_searchChoices(value) {
|
|
const newValue = isType('String', value) ? value.trim() : value;
|
|
const currentValue = isType('String', this._currentValue)
|
|
? this._currentValue.trim()
|
|
: this._currentValue;
|
|
|
|
if (newValue.length < 1 && newValue === `${currentValue} `) {
|
|
return 0;
|
|
}
|
|
|
|
// If new value matches the desired length and is not the same as the current value with a space
|
|
const haystack = this._store.searchableChoices;
|
|
const needle = newValue;
|
|
const keys = [...this.config.searchFields];
|
|
const options = Object.assign(this.config.fuseOptions, { keys });
|
|
const fuse = new Fuse(haystack, options);
|
|
const results = fuse.search(needle);
|
|
|
|
this._currentValue = newValue;
|
|
this._highlightPosition = 0;
|
|
this._isSearching = true;
|
|
this._store.dispatch(filterChoices(results));
|
|
|
|
return results.length;
|
|
}
|
|
|
|
_addEventListeners() {
|
|
window.delegateEvent.add('keyup', this._onKeyUp);
|
|
window.delegateEvent.add('keydown', this._onKeyDown);
|
|
window.delegateEvent.add('click', this._onClick);
|
|
window.delegateEvent.add('touchmove', this._onTouchMove);
|
|
window.delegateEvent.add('touchend', this._onTouchEnd);
|
|
window.delegateEvent.add('mousedown', this._onMouseDown);
|
|
window.delegateEvent.add('mouseover', this._onMouseOver);
|
|
|
|
if (this._isSelectOneElement) {
|
|
this.containerOuter.element.addEventListener('focus', this._onFocus);
|
|
this.containerOuter.element.addEventListener('blur', this._onBlur);
|
|
}
|
|
|
|
this.input.element.addEventListener('focus', this._onFocus);
|
|
this.input.element.addEventListener('blur', this._onBlur);
|
|
|
|
if (this.input.element.form) {
|
|
this.input.element.form.addEventListener('reset', this._onFormReset);
|
|
}
|
|
|
|
this.input.addEventListeners();
|
|
}
|
|
|
|
_removeEventListeners() {
|
|
window.delegateEvent.remove('keyup', this._onKeyUp);
|
|
window.delegateEvent.remove('keydown', this._onKeyDown);
|
|
window.delegateEvent.remove('click', this._onClick);
|
|
window.delegateEvent.remove('touchmove', this._onTouchMove);
|
|
window.delegateEvent.remove('touchend', this._onTouchEnd);
|
|
window.delegateEvent.remove('mousedown', this._onMouseDown);
|
|
window.delegateEvent.remove('mouseover', this._onMouseOver);
|
|
|
|
if (this._isSelectOneElement) {
|
|
this.containerOuter.element.removeEventListener('focus', this._onFocus);
|
|
this.containerOuter.element.removeEventListener('blur', this._onBlur);
|
|
}
|
|
|
|
this.input.element.removeEventListener('focus', this._onFocus);
|
|
this.input.element.removeEventListener('blur', this._onBlur);
|
|
|
|
if (this.input.element.form) {
|
|
this.input.element.form.removeEventListener('reset', this._onFormReset);
|
|
}
|
|
|
|
this.input.removeEventListeners();
|
|
}
|
|
|
|
_onKeyDown(event) {
|
|
const { target, keyCode, ctrlKey, metaKey } = event;
|
|
|
|
if (
|
|
target !== this.input.element &&
|
|
!this.containerOuter.element.contains(target)
|
|
) {
|
|
return;
|
|
}
|
|
|
|
const { activeItems } = this._store;
|
|
const hasFocusedInput = this.input.isFocussed;
|
|
const hasActiveDropdown = this.dropdown.isActive;
|
|
const hasItems = this.itemList.hasChildren;
|
|
const keyString = String.fromCharCode(keyCode);
|
|
|
|
const {
|
|
BACK_KEY,
|
|
DELETE_KEY,
|
|
ENTER_KEY,
|
|
A_KEY,
|
|
ESC_KEY,
|
|
UP_KEY,
|
|
DOWN_KEY,
|
|
PAGE_UP_KEY,
|
|
PAGE_DOWN_KEY,
|
|
} = KEY_CODES;
|
|
const hasCtrlDownKeyPressed = ctrlKey || metaKey;
|
|
|
|
// If a user is typing and the dropdown is not active
|
|
if (!this._isTextElement && /[a-zA-Z0-9-_ ]/.test(keyString)) {
|
|
this.showDropdown();
|
|
}
|
|
|
|
// Map keys to key actions
|
|
const keyDownActions = {
|
|
[A_KEY]: this._onAKey,
|
|
[ENTER_KEY]: this._onEnterKey,
|
|
[ESC_KEY]: this._onEscapeKey,
|
|
[UP_KEY]: this._onDirectionKey,
|
|
[PAGE_UP_KEY]: this._onDirectionKey,
|
|
[DOWN_KEY]: this._onDirectionKey,
|
|
[PAGE_DOWN_KEY]: this._onDirectionKey,
|
|
[DELETE_KEY]: this._onDeleteKey,
|
|
[BACK_KEY]: this._onDeleteKey,
|
|
};
|
|
|
|
// If keycode has a function, run it
|
|
if (keyDownActions[keyCode]) {
|
|
keyDownActions[keyCode]({
|
|
event,
|
|
target,
|
|
keyCode,
|
|
metaKey,
|
|
activeItems,
|
|
hasFocusedInput,
|
|
hasActiveDropdown,
|
|
hasItems,
|
|
hasCtrlDownKeyPressed,
|
|
});
|
|
}
|
|
}
|
|
|
|
_onKeyUp({ target, keyCode }) {
|
|
if (target !== this.input.element) {
|
|
return;
|
|
}
|
|
|
|
const { value } = this.input;
|
|
const { activeItems } = this._store;
|
|
const canAddItem = this._canAddItem(activeItems, value);
|
|
const { BACK_KEY: backKey, DELETE_KEY: deleteKey } = KEY_CODES;
|
|
|
|
// We are typing into a text input and have a value, we want to show a dropdown
|
|
// notice. Otherwise hide the dropdown
|
|
if (this._isTextElement) {
|
|
const canShowDropdownNotice = canAddItem.notice && value;
|
|
if (canShowDropdownNotice) {
|
|
const dropdownItem = this._getTemplate('notice', canAddItem.notice);
|
|
this.dropdown.element.innerHTML = dropdownItem.outerHTML;
|
|
this.showDropdown(true);
|
|
} else {
|
|
this.hideDropdown(true);
|
|
}
|
|
} else {
|
|
const userHasRemovedValue =
|
|
(keyCode === backKey || keyCode === deleteKey) && !target.value;
|
|
const canReactivateChoices = !this._isTextElement && this._isSearching;
|
|
const canSearch = this._canSearch && canAddItem.response;
|
|
|
|
if (userHasRemovedValue && canReactivateChoices) {
|
|
this._isSearching = false;
|
|
this._store.dispatch(activateChoices(true));
|
|
} else if (canSearch) {
|
|
this._handleSearch(this.input.value);
|
|
}
|
|
}
|
|
|
|
this._canSearch = this.config.searchEnabled;
|
|
}
|
|
|
|
_onAKey({ hasItems, hasCtrlDownKeyPressed }) {
|
|
// If CTRL + A or CMD + A have been pressed and there are items to select
|
|
if (hasCtrlDownKeyPressed && hasItems) {
|
|
this._canSearch = false;
|
|
|
|
const shouldHightlightAll =
|
|
this.config.removeItems &&
|
|
!this.input.value &&
|
|
this.input.element === document.activeElement;
|
|
|
|
if (shouldHightlightAll) {
|
|
this.highlightAll();
|
|
}
|
|
}
|
|
}
|
|
|
|
_onEnterKey({ event, target, activeItems, hasActiveDropdown }) {
|
|
const { ENTER_KEY: enterKey } = KEY_CODES;
|
|
const targetWasButton = target.hasAttribute('data-button');
|
|
|
|
if (this._isTextElement && target.value) {
|
|
const { value } = this.input;
|
|
const canAddItem = this._canAddItem(activeItems, value);
|
|
|
|
if (canAddItem.response) {
|
|
this.hideDropdown(true);
|
|
this._addItem({ value });
|
|
this._triggerChange(value);
|
|
this.clearInput();
|
|
}
|
|
}
|
|
|
|
if (targetWasButton) {
|
|
this._handleButtonAction(activeItems, target);
|
|
event.preventDefault();
|
|
}
|
|
|
|
if (hasActiveDropdown) {
|
|
const highlightedChoice = this.dropdown.getChild(
|
|
`.${this.config.classNames.highlightedState}`,
|
|
);
|
|
|
|
if (highlightedChoice) {
|
|
// add enter keyCode value
|
|
if (activeItems[0]) {
|
|
activeItems[0].keyCode = enterKey; // eslint-disable-line no-param-reassign
|
|
}
|
|
this._handleChoiceAction(activeItems, highlightedChoice);
|
|
}
|
|
|
|
event.preventDefault();
|
|
} else if (this._isSelectOneElement) {
|
|
this.showDropdown();
|
|
event.preventDefault();
|
|
}
|
|
}
|
|
|
|
_onEscapeKey({ hasActiveDropdown }) {
|
|
if (hasActiveDropdown) {
|
|
this.hideDropdown(true);
|
|
this.containerOuter.focus();
|
|
}
|
|
}
|
|
|
|
_onDirectionKey({ event, hasActiveDropdown, keyCode, metaKey }) {
|
|
const {
|
|
DOWN_KEY: downKey,
|
|
PAGE_UP_KEY: pageUpKey,
|
|
PAGE_DOWN_KEY: pageDownKey,
|
|
} = KEY_CODES;
|
|
|
|
// If up or down key is pressed, traverse through options
|
|
if (hasActiveDropdown || this._isSelectOneElement) {
|
|
this.showDropdown();
|
|
this._canSearch = false;
|
|
|
|
const directionInt =
|
|
keyCode === downKey || keyCode === pageDownKey ? 1 : -1;
|
|
const skipKey =
|
|
metaKey || keyCode === pageDownKey || keyCode === pageUpKey;
|
|
const selectableChoiceIdentifier = '[data-choice-selectable]';
|
|
|
|
let nextEl;
|
|
if (skipKey) {
|
|
if (directionInt > 0) {
|
|
nextEl = Array.from(
|
|
this.dropdown.element.querySelectorAll(selectableChoiceIdentifier),
|
|
).pop();
|
|
} else {
|
|
nextEl = this.dropdown.element.querySelector(
|
|
selectableChoiceIdentifier,
|
|
);
|
|
}
|
|
} else {
|
|
const currentEl = this.dropdown.element.querySelector(
|
|
`.${this.config.classNames.highlightedState}`,
|
|
);
|
|
if (currentEl) {
|
|
nextEl = getAdjacentEl(
|
|
currentEl,
|
|
selectableChoiceIdentifier,
|
|
directionInt,
|
|
);
|
|
} else {
|
|
nextEl = this.dropdown.element.querySelector(
|
|
selectableChoiceIdentifier,
|
|
);
|
|
}
|
|
}
|
|
|
|
if (nextEl) {
|
|
// We prevent default to stop the cursor moving
|
|
// when pressing the arrow
|
|
if (
|
|
!isScrolledIntoView(nextEl, this.choiceList.element, directionInt)
|
|
) {
|
|
this.choiceList.scrollToChoice(nextEl, directionInt);
|
|
}
|
|
this._highlightChoice(nextEl);
|
|
}
|
|
|
|
// Prevent default to maintain cursor position whilst
|
|
// traversing dropdown options
|
|
event.preventDefault();
|
|
}
|
|
}
|
|
|
|
_onDeleteKey({ event, target, hasFocusedInput, activeItems }) {
|
|
// If backspace or delete key is pressed and the input has no value
|
|
if (hasFocusedInput && !target.value && !this._isSelectOneElement) {
|
|
this._handleBackspace(activeItems);
|
|
event.preventDefault();
|
|
}
|
|
}
|
|
|
|
_onTouchMove() {
|
|
if (this._wasTap) {
|
|
this._wasTap = false;
|
|
}
|
|
}
|
|
|
|
_onTouchEnd(event) {
|
|
const { target } = event || event.touches[0];
|
|
const touchWasWithinContainer =
|
|
this._wasTap && this.containerOuter.element.contains(target);
|
|
|
|
if (touchWasWithinContainer) {
|
|
const containerWasExactTarget =
|
|
target === this.containerOuter.element ||
|
|
target === this.containerInner.element;
|
|
|
|
if (containerWasExactTarget) {
|
|
if (this._isTextElement) {
|
|
this.input.focus();
|
|
} else if (this._isSelectMultipleElement) {
|
|
this.showDropdown();
|
|
}
|
|
}
|
|
|
|
// Prevents focus event firing
|
|
event.stopPropagation();
|
|
}
|
|
|
|
this._wasTap = true;
|
|
}
|
|
|
|
_onMouseDown(event) {
|
|
const { target, shiftKey } = event;
|
|
// If we have our mouse down on the scrollbar and are on IE11...
|
|
if (this.choiceList.element.contains(target) && isIE11()) {
|
|
this._isScrollingOnIe = true;
|
|
}
|
|
|
|
if (
|
|
!this.containerOuter.element.contains(target) ||
|
|
target === this.input.element
|
|
) {
|
|
return;
|
|
}
|
|
|
|
const { activeItems } = this._store;
|
|
const hasShiftKey = shiftKey;
|
|
const buttonTarget = findAncestorByAttrName(target, 'data-button');
|
|
const itemTarget = findAncestorByAttrName(target, 'data-item');
|
|
const choiceTarget = findAncestorByAttrName(target, 'data-choice');
|
|
|
|
if (buttonTarget) {
|
|
this._handleButtonAction(activeItems, buttonTarget);
|
|
} else if (itemTarget) {
|
|
this._handleItemAction(activeItems, itemTarget, hasShiftKey);
|
|
} else if (choiceTarget) {
|
|
this._handleChoiceAction(activeItems, choiceTarget);
|
|
}
|
|
|
|
event.preventDefault();
|
|
}
|
|
|
|
_onMouseOver({ target }) {
|
|
const targetWithinDropdown =
|
|
target === this.dropdown || this.dropdown.element.contains(target);
|
|
const shouldHighlightChoice =
|
|
targetWithinDropdown && target.hasAttribute('data-choice');
|
|
|
|
if (shouldHighlightChoice) {
|
|
this._highlightChoice(target);
|
|
}
|
|
}
|
|
|
|
_onClick({ target }) {
|
|
const clickWasWithinContainer = this.containerOuter.element.contains(
|
|
target,
|
|
);
|
|
|
|
if (clickWasWithinContainer) {
|
|
if (!this.dropdown.isActive && !this.containerOuter.isDisabled) {
|
|
if (this._isTextElement) {
|
|
if (document.activeElement !== this.input.element) {
|
|
this.input.focus();
|
|
}
|
|
} else {
|
|
this.showDropdown();
|
|
this.containerOuter.focus();
|
|
}
|
|
} else if (
|
|
this._isSelectOneElement &&
|
|
target !== this.input.element &&
|
|
!this.dropdown.element.contains(target)
|
|
) {
|
|
this.hideDropdown();
|
|
}
|
|
} else {
|
|
const hasHighlightedItems = this._store.highlightedActiveItems.length > 0;
|
|
|
|
if (hasHighlightedItems) {
|
|
this.unhighlightAll();
|
|
}
|
|
|
|
this.containerOuter.removeFocusState();
|
|
this.hideDropdown(true);
|
|
}
|
|
}
|
|
|
|
_onFocus({ target }) {
|
|
const focusWasWithinContainer = this.containerOuter.element.contains(
|
|
target,
|
|
);
|
|
|
|
if (!focusWasWithinContainer) {
|
|
return;
|
|
}
|
|
|
|
const focusActions = {
|
|
text: () => {
|
|
if (target === this.input.element) {
|
|
this.containerOuter.addFocusState();
|
|
}
|
|
},
|
|
'select-one': () => {
|
|
this.containerOuter.addFocusState();
|
|
if (target === this.input.element) {
|
|
this.showDropdown(true);
|
|
}
|
|
},
|
|
'select-multiple': () => {
|
|
if (target === this.input.element) {
|
|
this.showDropdown(true);
|
|
// If element is a select box, the focused element is the container and the dropdown
|
|
// isn't already open, focus and show dropdown
|
|
this.containerOuter.addFocusState();
|
|
}
|
|
},
|
|
};
|
|
|
|
focusActions[this.passedElement.element.type]();
|
|
}
|
|
|
|
_onBlur({ target }) {
|
|
const blurWasWithinContainer = this.containerOuter.element.contains(target);
|
|
|
|
if (blurWasWithinContainer && !this._isScrollingOnIe) {
|
|
const { activeItems } = this._store;
|
|
const hasHighlightedItems = activeItems.some(item => item.highlighted);
|
|
const blurActions = {
|
|
text: () => {
|
|
if (target === this.input.element) {
|
|
this.containerOuter.removeFocusState();
|
|
if (hasHighlightedItems) {
|
|
this.unhighlightAll();
|
|
}
|
|
this.hideDropdown(true);
|
|
}
|
|
},
|
|
'select-one': () => {
|
|
this.containerOuter.removeFocusState();
|
|
if (
|
|
target === this.input.element ||
|
|
(target === this.containerOuter.element && !this._canSearch)
|
|
) {
|
|
this.hideDropdown(true);
|
|
}
|
|
},
|
|
'select-multiple': () => {
|
|
if (target === this.input.element) {
|
|
this.containerOuter.removeFocusState();
|
|
this.hideDropdown(true);
|
|
if (hasHighlightedItems) {
|
|
this.unhighlightAll();
|
|
}
|
|
}
|
|
},
|
|
};
|
|
|
|
blurActions[this.passedElement.element.type]();
|
|
} else {
|
|
// On IE11, clicking the scollbar blurs our input and thus
|
|
// closes the dropdown. To stop this, we refocus our input
|
|
// if we know we are on IE *and* are scrolling.
|
|
this._isScrollingOnIe = false;
|
|
this.input.element.focus();
|
|
}
|
|
}
|
|
|
|
_onFormReset() {
|
|
this._store.dispatch(resetTo(this._initialState));
|
|
}
|
|
|
|
_highlightChoice(el = null) {
|
|
const choices = Array.from(
|
|
this.dropdown.element.querySelectorAll('[data-choice-selectable]'),
|
|
);
|
|
|
|
if (!choices.length) {
|
|
return;
|
|
}
|
|
|
|
let passedEl = el;
|
|
const highlightedChoices = Array.from(
|
|
this.dropdown.element.querySelectorAll(
|
|
`.${this.config.classNames.highlightedState}`,
|
|
),
|
|
);
|
|
|
|
// Remove any highlighted choices
|
|
highlightedChoices.forEach(choice => {
|
|
choice.classList.remove(this.config.classNames.highlightedState);
|
|
choice.setAttribute('aria-selected', 'false');
|
|
});
|
|
|
|
if (passedEl) {
|
|
this._highlightPosition = choices.indexOf(passedEl);
|
|
} else {
|
|
// Highlight choice based on last known highlight location
|
|
if (choices.length > this._highlightPosition) {
|
|
// If we have an option to highlight
|
|
passedEl = choices[this._highlightPosition];
|
|
} else {
|
|
// Otherwise highlight the option before
|
|
passedEl = choices[choices.length - 1];
|
|
}
|
|
|
|
if (!passedEl) {
|
|
passedEl = choices[0];
|
|
}
|
|
}
|
|
|
|
passedEl.classList.add(this.config.classNames.highlightedState);
|
|
passedEl.setAttribute('aria-selected', 'true');
|
|
this.passedElement.triggerEvent(EVENTS.highlightChoice, { el: passedEl });
|
|
|
|
if (this.dropdown.isActive) {
|
|
// IE11 ignores aria-label and blocks virtual keyboard
|
|
// if aria-activedescendant is set without a dropdown
|
|
this.input.setActiveDescendant(passedEl.id);
|
|
this.containerOuter.setActiveDescendant(passedEl.id);
|
|
}
|
|
}
|
|
|
|
_addItem({
|
|
value,
|
|
label = null,
|
|
choiceId = -1,
|
|
groupId = -1,
|
|
customProperties = null,
|
|
placeholder = false,
|
|
keyCode = null,
|
|
}) {
|
|
let passedValue = isType('String', value) ? value.trim() : value;
|
|
|
|
const passedKeyCode = keyCode;
|
|
const passedCustomProperties = customProperties;
|
|
const { items } = this._store;
|
|
const passedLabel = label || passedValue;
|
|
const passedOptionId = parseInt(choiceId, 10) || -1;
|
|
const group = groupId >= 0 ? this._store.getGroupById(groupId) : null;
|
|
const id = items ? items.length + 1 : 1;
|
|
|
|
// If a prepended value has been passed, prepend it
|
|
if (this.config.prependValue) {
|
|
passedValue = this.config.prependValue + passedValue.toString();
|
|
}
|
|
|
|
// If an appended value has been passed, append it
|
|
if (this.config.appendValue) {
|
|
passedValue += this.config.appendValue.toString();
|
|
}
|
|
|
|
this._store.dispatch(
|
|
addItem({
|
|
value: passedValue,
|
|
label: passedLabel,
|
|
id,
|
|
choiceId: passedOptionId,
|
|
groupId,
|
|
customProperties,
|
|
placeholder,
|
|
keyCode: passedKeyCode,
|
|
}),
|
|
);
|
|
|
|
if (this._isSelectOneElement) {
|
|
this.removeActiveItems(id);
|
|
}
|
|
|
|
// Trigger change event
|
|
this.passedElement.triggerEvent(EVENTS.addItem, {
|
|
id,
|
|
value: passedValue,
|
|
label: passedLabel,
|
|
customProperties: passedCustomProperties,
|
|
groupValue: group && group.value ? group.value : undefined,
|
|
keyCode: passedKeyCode,
|
|
});
|
|
|
|
return this;
|
|
}
|
|
|
|
_removeItem(item) {
|
|
if (!item || !isType('Object', item)) {
|
|
return this;
|
|
}
|
|
|
|
const { id, value, label, choiceId, groupId } = item;
|
|
const group = groupId >= 0 ? this._store.getGroupById(groupId) : null;
|
|
|
|
this._store.dispatch(removeItem(id, choiceId));
|
|
|
|
if (group && group.value) {
|
|
this.passedElement.triggerEvent(EVENTS.removeItem, {
|
|
id,
|
|
value,
|
|
label,
|
|
groupValue: group.value,
|
|
});
|
|
} else {
|
|
this.passedElement.triggerEvent(EVENTS.removeItem, {
|
|
id,
|
|
value,
|
|
label,
|
|
});
|
|
}
|
|
|
|
return this;
|
|
}
|
|
|
|
_addChoice({
|
|
value,
|
|
label = null,
|
|
isSelected = false,
|
|
isDisabled = false,
|
|
groupId = -1,
|
|
customProperties = null,
|
|
placeholder = false,
|
|
keyCode = null,
|
|
}) {
|
|
if (typeof value === 'undefined' || value === null) {
|
|
return;
|
|
}
|
|
|
|
// Generate unique id
|
|
const { choices } = this._store;
|
|
const choiceLabel = label || value;
|
|
const choiceId = choices ? choices.length + 1 : 1;
|
|
const choiceElementId = `${this._baseId}-${
|
|
this._idNames.itemChoice
|
|
}-${choiceId}`;
|
|
|
|
this._store.dispatch(
|
|
addChoice({
|
|
value,
|
|
label: choiceLabel,
|
|
id: choiceId,
|
|
groupId,
|
|
disabled: isDisabled,
|
|
elementId: choiceElementId,
|
|
customProperties,
|
|
placeholder,
|
|
keyCode,
|
|
}),
|
|
);
|
|
|
|
if (isSelected) {
|
|
this._addItem({
|
|
value,
|
|
label: choiceLabel,
|
|
choiceId,
|
|
customProperties,
|
|
placeholder,
|
|
keyCode,
|
|
});
|
|
}
|
|
}
|
|
|
|
_addGroup({ group, id, valueKey = 'value', labelKey = 'label' }) {
|
|
const groupChoices = isType('Object', group)
|
|
? group.choices
|
|
: Array.from(group.getElementsByTagName('OPTION'));
|
|
const groupId = id || Math.floor(new Date().valueOf() * Math.random());
|
|
const isDisabled = group.disabled ? group.disabled : false;
|
|
|
|
if (groupChoices) {
|
|
this._store.dispatch(addGroup(group.label, groupId, true, isDisabled));
|
|
|
|
const addGroupChoices = choice => {
|
|
const isOptDisabled =
|
|
choice.disabled || (choice.parentNode && choice.parentNode.disabled);
|
|
|
|
this._addChoice({
|
|
value: choice[valueKey],
|
|
label: isType('Object', choice) ? choice[labelKey] : choice.innerHTML,
|
|
isSelected: choice.selected,
|
|
isDisabled: isOptDisabled,
|
|
groupId,
|
|
customProperties: choice.customProperties,
|
|
placeholder: choice.placeholder,
|
|
});
|
|
};
|
|
|
|
groupChoices.forEach(addGroupChoices);
|
|
} else {
|
|
this._store.dispatch(
|
|
addGroup(group.label, group.id, false, group.disabled),
|
|
);
|
|
}
|
|
}
|
|
|
|
_getTemplate(template, ...args) {
|
|
if (!template) {
|
|
return null;
|
|
}
|
|
|
|
const { templates, classNames } = this.config;
|
|
return templates[template].call(this, classNames, ...args);
|
|
}
|
|
|
|
_createTemplates() {
|
|
const { callbackOnCreateTemplates } = this.config;
|
|
let userTemplates = {};
|
|
|
|
if (
|
|
callbackOnCreateTemplates &&
|
|
isType('Function', callbackOnCreateTemplates)
|
|
) {
|
|
userTemplates = callbackOnCreateTemplates.call(this, strToEl);
|
|
}
|
|
|
|
this.config.templates = merge(TEMPLATES, userTemplates);
|
|
}
|
|
|
|
_createElements() {
|
|
this.containerOuter = new Container({
|
|
element: this._getTemplate(
|
|
'containerOuter',
|
|
this._direction,
|
|
this._isSelectElement,
|
|
this._isSelectOneElement,
|
|
this.config.searchEnabled,
|
|
this.passedElement.element.type,
|
|
),
|
|
classNames: this.config.classNames,
|
|
type: this.passedElement.element.type,
|
|
position: this.config.position,
|
|
});
|
|
|
|
this.containerInner = new Container({
|
|
element: this._getTemplate('containerInner'),
|
|
classNames: this.config.classNames,
|
|
type: this.passedElement.element.type,
|
|
position: this.config.position,
|
|
});
|
|
|
|
this.input = new Input({
|
|
element: this._getTemplate('input', this._placeholderValue),
|
|
classNames: this.config.classNames,
|
|
type: this.passedElement.element.type,
|
|
});
|
|
|
|
this.choiceList = new List({
|
|
element: this._getTemplate('choiceList', this._isSelectOneElement),
|
|
});
|
|
|
|
this.itemList = new List({
|
|
element: this._getTemplate('itemList', this._isSelectOneElement),
|
|
});
|
|
|
|
this.dropdown = new Dropdown({
|
|
element: this._getTemplate('dropdown'),
|
|
classNames: this.config.classNames,
|
|
type: this.passedElement.element.type,
|
|
});
|
|
}
|
|
|
|
_createStructure() {
|
|
// Hide original element
|
|
this.passedElement.conceal();
|
|
// Wrap input in container preserving DOM ordering
|
|
this.containerInner.wrap(this.passedElement.element);
|
|
// Wrapper inner container with outer container
|
|
this.containerOuter.wrap(this.containerInner.element);
|
|
|
|
if (this._isSelectOneElement) {
|
|
this.input.placeholder = this.config.searchPlaceholderValue || '';
|
|
} else if (this._placeholderValue) {
|
|
this.input.placeholder = this._placeholderValue;
|
|
this.input.setWidth(true);
|
|
}
|
|
|
|
this.containerOuter.element.appendChild(this.containerInner.element);
|
|
this.containerOuter.element.appendChild(this.dropdown.element);
|
|
this.containerInner.element.appendChild(this.itemList.element);
|
|
|
|
if (!this._isTextElement) {
|
|
this.dropdown.element.appendChild(this.choiceList.element);
|
|
}
|
|
|
|
if (!this._isSelectOneElement) {
|
|
this.containerInner.element.appendChild(this.input.element);
|
|
} else if (this.config.searchEnabled) {
|
|
this.dropdown.element.insertBefore(
|
|
this.input.element,
|
|
this.dropdown.element.firstChild,
|
|
);
|
|
}
|
|
|
|
if (this._isSelectElement) {
|
|
this._addPredefinedChoices();
|
|
} else if (this._isTextElement) {
|
|
this._addPredefinedItems();
|
|
}
|
|
}
|
|
|
|
_addPredefinedChoices() {
|
|
const passedGroups = this.passedElement.optionGroups;
|
|
|
|
this._highlightPosition = 0;
|
|
this._isSearching = false;
|
|
this._setLoading(true);
|
|
|
|
if (passedGroups && passedGroups.length) {
|
|
// If we have a placeholder option
|
|
const placeholderChoice = this.passedElement.placeholderOption;
|
|
if (
|
|
placeholderChoice &&
|
|
placeholderChoice.parentNode.tagName === 'SELECT'
|
|
) {
|
|
this._addChoice({
|
|
value: placeholderChoice.value,
|
|
label: placeholderChoice.innerHTML,
|
|
isSelected: placeholderChoice.selected,
|
|
isDisabled: placeholderChoice.disabled,
|
|
placeholder: true,
|
|
});
|
|
}
|
|
|
|
passedGroups.forEach(group =>
|
|
this._addGroup({
|
|
group,
|
|
id: group.id || null,
|
|
}),
|
|
);
|
|
} else {
|
|
const passedOptions = this.passedElement.options;
|
|
const filter = this.config.sortFn;
|
|
const allChoices = this._presetChoices;
|
|
|
|
// Create array of options from option elements
|
|
passedOptions.forEach(o => {
|
|
allChoices.push({
|
|
value: o.value,
|
|
label: o.innerHTML,
|
|
selected: o.selected,
|
|
disabled: o.disabled || o.parentNode.disabled,
|
|
placeholder: o.hasAttribute('placeholder'),
|
|
customProperties: o.getAttribute('data-custom-properties'),
|
|
});
|
|
});
|
|
|
|
// If sorting is enabled or the user is searching, filter choices
|
|
if (this.config.shouldSort) allChoices.sort(filter);
|
|
|
|
// Determine whether there is a selected choice
|
|
const hasSelectedChoice = allChoices.some(choice => choice.selected);
|
|
const handleChoice = (choice, index) => {
|
|
const { value, label, customProperties, placeholder } = choice;
|
|
|
|
if (this._isSelectElement) {
|
|
// If the choice is actually a group
|
|
if (choice.choices) {
|
|
this._addGroup({
|
|
group: choice,
|
|
id: choice.id || null,
|
|
});
|
|
} else {
|
|
// If there is a selected choice already or the choice is not
|
|
// the first in the array, add each choice normally
|
|
// Otherwise pre-select the first choice in the array if it's a single select
|
|
const shouldPreselect =
|
|
this._isSelectOneElement && !hasSelectedChoice && index === 0;
|
|
const isSelected = shouldPreselect ? true : choice.selected;
|
|
const isDisabled = shouldPreselect ? false : choice.disabled;
|
|
|
|
this._addChoice({
|
|
value,
|
|
label,
|
|
isSelected,
|
|
isDisabled,
|
|
customProperties,
|
|
placeholder,
|
|
});
|
|
}
|
|
} else {
|
|
this._addChoice({
|
|
value,
|
|
label,
|
|
isSelected: choice.selected,
|
|
isDisabled: choice.disabled,
|
|
customProperties,
|
|
placeholder,
|
|
});
|
|
}
|
|
};
|
|
|
|
// Add each choice
|
|
allChoices.forEach((choice, index) => handleChoice(choice, index));
|
|
}
|
|
|
|
this._setLoading(false);
|
|
}
|
|
|
|
_addPredefinedItems() {
|
|
const handlePresetItem = item => {
|
|
const itemType = getType(item);
|
|
if (itemType === 'Object' && item.value) {
|
|
this._addItem({
|
|
value: item.value,
|
|
label: item.label,
|
|
choiceId: item.id,
|
|
customProperties: item.customProperties,
|
|
placeholder: item.placeholder,
|
|
});
|
|
} else if (itemType === 'String') {
|
|
this._addItem({
|
|
value: item,
|
|
});
|
|
}
|
|
};
|
|
|
|
this._presetItems.forEach(item => handlePresetItem(item));
|
|
}
|
|
|
|
_setChoiceOrItem(item) {
|
|
const itemType = getType(item).toLowerCase();
|
|
const handleType = {
|
|
object: () => {
|
|
if (!item.value) {
|
|
return;
|
|
}
|
|
|
|
// If we are dealing with a select input, we need to create an option first
|
|
// that is then selected. For text inputs we can just add items normally.
|
|
if (!this._isTextElement) {
|
|
this._addChoice({
|
|
value: item.value,
|
|
label: item.label,
|
|
isSelected: true,
|
|
isDisabled: false,
|
|
customProperties: item.customProperties,
|
|
placeholder: item.placeholder,
|
|
});
|
|
} else {
|
|
this._addItem({
|
|
value: item.value,
|
|
label: item.label,
|
|
choiceId: item.id,
|
|
customProperties: item.customProperties,
|
|
placeholder: item.placeholder,
|
|
});
|
|
}
|
|
},
|
|
string: () => {
|
|
if (!this._isTextElement) {
|
|
this._addChoice({
|
|
value: item,
|
|
label: item,
|
|
isSelected: true,
|
|
isDisabled: false,
|
|
});
|
|
} else {
|
|
this._addItem({
|
|
value: item,
|
|
});
|
|
}
|
|
},
|
|
};
|
|
|
|
handleType[itemType]();
|
|
}
|
|
|
|
_findAndSelectChoiceByValue(val) {
|
|
const { choices } = this._store;
|
|
// Check 'value' property exists and the choice isn't already selected
|
|
const foundChoice = choices.find(choice =>
|
|
this.config.itemComparer(choice.value, val),
|
|
);
|
|
|
|
if (foundChoice && !foundChoice.selected) {
|
|
this._addItem({
|
|
value: foundChoice.value,
|
|
label: foundChoice.label,
|
|
choiceId: foundChoice.id,
|
|
groupId: foundChoice.groupId,
|
|
customProperties: foundChoice.customProperties,
|
|
placeholder: foundChoice.placeholder,
|
|
keyCode: foundChoice.keyCode,
|
|
});
|
|
}
|
|
}
|
|
|
|
_generateInstances(elements, config) {
|
|
return elements.reduce(
|
|
(instances, element) => {
|
|
instances.push(new Choices(element, config));
|
|
return instances;
|
|
},
|
|
[this],
|
|
);
|
|
}
|
|
|
|
_generatePlaceholderValue() {
|
|
if (this._isSelectOneElement) {
|
|
return false;
|
|
}
|
|
|
|
return this.config.placeholder
|
|
? this.config.placeholderValue ||
|
|
this.passedElement.element.getAttribute('placeholder')
|
|
: false;
|
|
}
|
|
|
|
/* ===== End of Private functions ====== */
|
|
}
|
|
|
|
Choices.userDefaults = {};
|
|
// We cannot export default here due to Webpack: https://github.com/webpack/webpack/issues/3929
|
|
module.exports = Choices;
|