mirror of
https://github.com/Choices-js/Choices.git
synced 2024-05-17 21:16:34 +02:00
594 lines
18 KiB
JavaScript
594 lines
18 KiB
JavaScript
'use strict';
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import { createStore } from 'redux';
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import choices from './reducers/index.js';
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import { addItemToStore, removeItemFromStore } from './actions/index';
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import { hasClass, wrap, getSiblings, isType } from './lib/utils.js';
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/**
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TODO:
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- State handling
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- Dynamically set input width to contents
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- Handle select input
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- Handle multiple select input ?
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*/
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export class Choices {
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constructor(options) {
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const FAKE_EL = document.createElement("fakeel");
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const USER_OPTIONS = options || {};
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const STORE = createStore(choices);
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const DEFAULT_OPTIONS = {
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element: document.querySelector('[data-choice]'),
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disabled: false,
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addItems: true,
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removeItems: true,
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editItems: false,
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maxItems: false,
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delimiter: ',',
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allowDuplicates: true,
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regexFilter: false,
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debug: false,
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placeholder: false,
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prependValue: false,
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appendValue: false,
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callbackOnInit: function() {},
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callbackOnRender: function() {},
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callbackOnRemoveItem: function() {},
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callbackOnAddItem: function() {}
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};
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// Merge options with user options
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this.options = this.extend(DEFAULT_OPTIONS, USER_OPTIONS || {});
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this.store = STORE;
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this.initialised = false;
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this.supports = 'querySelector' in document && 'addEventListener' in document && 'classList' in FAKE_EL;
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// Retrieve elements
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this.element = this.options.element;
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// If input already has values, parse the array, otherwise create a blank array
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this.valueArray = this.element.value !== '' ? this.cleanInputValue(this.element.value) : [];
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// How many values in array
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this.valueCount = this.valueArray.length;
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// Bind methods
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this.onClick = this.onClick.bind(this);
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this.onKeyDown = this.onKeyDown.bind(this);
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this.onChange = this.onChange.bind(this);
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this.onFocus = this.onFocus.bind(this);
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this.onBlur = this.onChange.bind(this);
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this.init();
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}
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cleanInputValue(value) {
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// Remove spaces and split with delimiter
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return value.replace(/\s/g, '').split(this.options.delimiter);
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}
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/**
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* Merges unspecified amount of objects into new object
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* @private
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* @return {Object} Merged object of arguments
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*/
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extend() {
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let extended = {};
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let length = arguments.length;
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/**
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* Merge one object into another
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* @param {Object} obj Object to merge into extended object
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*/
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let merge = function(obj) {
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for (let prop in obj) {
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extended[prop] = obj[prop];
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}
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};
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// Loop through each passed argument
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for (let i = 0; i < length; i++) {
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// Store argument at position i
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let obj = arguments[i];
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// If we are in fact dealing with an object, merge it. Otherwise throw error
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if (isType('Object', obj)) {
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merge(obj);
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} else {
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console.error('Custom options must be an object');
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}
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}
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return extended;
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};
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/* State */
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isOpen() {
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}
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isDisabled() {
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}
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isEmpty() {
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return (this.valueCount.length === 0) ? true : false;
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}
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clearInput() {
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if (this.input.value) this.input.value = '';
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}
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/* Event handling */
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onKeyUp(e) {
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}
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onKeyDown(e) {
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const CTRLDOWN_KEY = e.ctrlKey || e.metaKey;
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const DELETE_KEY = 8 || 46;
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const ENTER_KEY = 13;
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const A_KEY = 65;
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// If CTRL + A or CMD + A have been pressed and there are items to select
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if (CTRLDOWN_KEY && e.keyCode === A_KEY && this.list && this.list.children) {
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let handleSelectAll = () => {
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if(this.options.removeItems && !this.input.value) {
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this.selectAll(this.list.children);
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}
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};
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handleSelectAll();
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}
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// If enter key is pressed and the input has a value
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if (e.keyCode === ENTER_KEY && e.target.value) {
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let value = this.input.value;
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let handleEnter = () => {
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let canUpdate = true;
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// If there is a max entry limit and we have reached that limit
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// don't update
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if (this.options.maxItems && this.options.maxItems <= this.list.children.length) {
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canUpdate = false;
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}
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// If no duplicates are allowed, and the value already exists
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// in the array, don't update
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if (this.options.allowDuplicates === false && this.element.value) {
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if (this.valueArray.indexOf(value) > -1) {
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canUpdate = false;
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}
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}
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// All is good, update
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if (canUpdate) {
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if(this.element.type === 'text') {
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let canAddItem = true;
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// If a user has supplied a regular expression filter
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if(this.options.regexFilter) {
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// Determine whether we can update based on whether
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// our regular expression passes
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canAddItem = this.regexFilter(value);
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}
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// All is good, add
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if(canAddItem) {
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this.addItem(this.list, value);
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this.updateInputValue(value);
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this.clearInput(this.element);
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this.unselectAll(this.list.children);
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}
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} else {
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}
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}
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};
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handleEnter();
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}
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// If backspace or delete key is pressed and the input has no value
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if (e.keyCode === DELETE_KEY && !e.target.value) {
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let handleBackspaceKey = () => {
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if(this.options.removeItems) {
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let currentListItems = this.list.querySelectorAll('.choices__item');
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let selectedItems = this.list.querySelectorAll('.is-selected');
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let lastItem = currentListItems[currentListItems.length - 1];
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if(lastItem) {
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lastItem.classList.add('is-selected');
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}
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// If editing the last item is allowed and there is a last item and
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// there are not other selected items (minus the last item), we can edit
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// the item value. Otherwise if we can remove items, remove all items
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if(this.options.editItems && lastItem && selectedItems.length <= 1) {
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this.input.value = lastItem.innerHTML;
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this.removeItem(lastItem);
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} else {
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this.removeAll(currentListItems);
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}
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}
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};
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handleBackspaceKey();
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e.preventDefault();
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}
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}
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onFocus(e) {
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}
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onClick(e) {
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}
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onChange(e) {
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}
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/* Event listeners */
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addEventListeners(el) {
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el.addEventListener('click', this.onClick);
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el.addEventListener('keyup', this.onKeyUp);
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el.addEventListener('keydown', this.onKeyDown);
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el.addEventListener('change', this.onChange);
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el.addEventListener('focus', this.onFocus);
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el.addEventListener('blur', this.onBlur);
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}
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removeEventListeners(el) {
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el.removeEventListener('click', this.onClick);
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el.removeEventListener('keyup', this.onKeyUp);
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el.removeEventListener('keydown', this.onKeyDown);
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el.removeEventListener('change', this.onChange);
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el.removeEventListener('focus', this.onFocus);
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el.removeEventListener('blur', this.onBlur);
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}
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/* Methods */
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setValue() {}
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getValue() {}
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getValues() {}
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regexFilter(value) {
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let expression = new RegExp(this.options.regexFilter, 'i');
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let passesTest = expression.test(value);
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return passesTest;
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}
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getPlaceholder() {}
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selectAll(items) {
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for (let i = 0; i < items.length; i++) {
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let item = items[i];
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if (!item.classList.contains('is-selected')) {
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item.classList.add('is-selected');
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}
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};
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}
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unselectAll(items) {
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for (let i = 0; i < items.length; i++) {
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let item = items[i];
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if (item.classList.contains('is-selected')) {
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item.classList.remove('is-selected');
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}
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};
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}
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updateInputValue(value) {
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if (this.options.debug) console.debug('Update input value');
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// Push new value to array
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this.valueArray.push(value);
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// Caste array to string and set it as the hidden inputs value
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this.element.value = this.valueArray.join(this.options.delimiter);
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}
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removeInputValue(value) {
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if (this.options.debug) console.debug('Remove input value');
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let index = this.valueArray.indexOf(value);
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this.valueArray.splice(index, 1);
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this.element.value = this.valueArray.join(this.options.delimiter);
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}
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addItem(parent, value) {
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if (this.options.debug) console.debug('Add item');
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let passedValue = value;
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// If a prepended value has been passed, prepend it
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if(this.options.prependValue) {
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passedValue = this.options.prependValue + passedValue.toString();
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}
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// If an appended value has been passed, append it
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if(this.options.appendValue) {
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passedValue = passedValue + this.options.appendValue.toString();
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}
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let id = this.store.getState().length + 1;
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// Create new list element
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let item = document.createElement('li');
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item.classList.add('choices__item');
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item.textContent = passedValue;
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item.id = id;
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// Append it to list
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parent.appendChild(item);
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// Run callback if it is a function
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if(this.options.callbackOnAddItem){
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if(isType('Function', this.options.callbackOnAddItem)) {
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this.options.callbackOnAddItem(item, value);
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} else {
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console.error('callbackOnAddItem: Callback is not a function');
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}
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}
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this.store.dispatch(addItemToStore(passedValue, item, id));
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console.log(this.store.getState());
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}
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removeItem(item) {
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if(!item) {
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console.error('removeItem: No item was passed to be removed');
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return;
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}
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let id = item.id;
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let value = item.innerHTML;
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item.parentNode.removeChild(item);
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// Run callback
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if(this.options.callbackOnRemoveItem){
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if(isType('Function', this.options.callbackOnRemoveItem)) {
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this.options.callbackOnRemoveItem(value);
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} else {
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console.error('callbackOnRemoveItem: Callback is not a function');
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}
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}
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this.store.dispatch(removeItemFromStore(id));
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console.log(this.store.getState());
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}
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removeAll(items) {
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for (let i = 0; i < items.length; i++) {
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let item = items[i];
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if (item.classList.contains('is-selected')) {
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this.removeItem(item);
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this.removeInputValue(item.textContent);
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}
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};
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}
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init() {
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if (!this.supports) console.error('init: Your browser doesn\'nt support shit');
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this.initialised = true;
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this.render(this.element);
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}
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renderTextInput() {
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// Template:
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//
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// <div class="choices choices--active">
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// <div class="choices__inner">
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// <input id="1" type="text" data-choice="" class="choices__input choices__input--hidden" tabindex="-1" style="display:none;" aria-hidden="true">
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// <ul class="choices__list choices__list--items"></ul>
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// <input type="text" class="choices__input choices__input--cloned">
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// </div>
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// </div>
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let containerOuter = document.createElement('div');
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containerOuter.className = 'choices choices--active';
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let containerInner = document.createElement('div');
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containerInner.className = 'choices__inner';
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// Hide passed input
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this.element.classList.add('choices__input', 'choices__input--hidden');
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this.element.tabIndex = '-1';
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this.element.setAttribute('style', 'display:none;');
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this.element.setAttribute('aria-hidden', 'true');
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// Wrap input in container preserving DOM ordering
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wrap(this.element, containerInner);
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// Wrapper inner container with outer container
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wrap(containerInner, containerOuter);
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let list = document.createElement('ul');
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list.className = 'choices__list choices__list--items';
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let input = document.createElement('input');
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input.type = 'text';
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input.className = 'choices__input choices__input--cloned';
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if (input.placeholder) {
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input.placeholder = this.element.placeholder;
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}
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if(!this.options.addItems) {
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input.disabled = true;
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}
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containerInner.appendChild(list);
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containerInner.appendChild(input);
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containerOuter.appendChild(containerInner);
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this.containerOuter = containerOuter;
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this.containerInner = containerInner;
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this.input = input;
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this.list = list;
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if (this.element.value !== '') {
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// Add any preset values
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this.valueArray.forEach((value) => {
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this.addItem(this.list, value);
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});
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}
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// Trigger event listeners
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this.addEventListeners(this.input);
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}
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renderSelectInput() {
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let containerOuter = document.createElement('div');
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containerOuter.className = 'choices choices--active';
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let containerInner = document.createElement('div');
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containerInner.className = 'choices__inner';
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// Hide passed input
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this.element.classList.add('choices__input', 'choices__input--hidden');
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this.element.tabIndex = '-1';
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this.element.setAttribute('style', 'display:none;');
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this.element.setAttribute('aria-hidden', 'true');
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// Wrap input in container preserving DOM ordering
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wrap(this.element, containerInner);
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// Wrapper inner container with outer container
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wrap(containerInner, containerOuter);
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let options = document.createElement('ul');
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options.className = 'choices__list choices__list--options';
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let input = document.createElement('input');
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input.type = 'text';
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input.className = 'choices__input choices__input--cloned';
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containerInner.appendChild(input);
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containerInner.appendChild(options);
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containerOuter.appendChild(containerInner);
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this.containerOuter = containerOuter;
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this.containerInner = containerInner;
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this.input = input;
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this.list = null;
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this.options = options;
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let initialOptions = this.element.children;
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if (initialOptions) {
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for (let i = 0; i < initialOptions.length; i++) {
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let parentOption = initialOptions[i];
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if(parentOption.tagName === 'OPTGROUP') {
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this.addItem(this.options, parentOption.label);
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for (let j = 0; j < parentOption.children.length; j++) {
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let childOption = parentOption.children[j];
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this.addItem(this.options, childOption.innerHTML);
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}
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} else if(parentOption.tagName === 'OPTION') {
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this.addItem(this.options, parentOption.innerHTML);
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}
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}
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}
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// Trigger event listeners
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this.addEventListeners(this.input);
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}
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renderMultipleSelectInput() {
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}
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render() {
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if (this.options.debug) console.debug('Render');
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switch (this.element.type) {
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case "text":
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this.renderTextInput();
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break;
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case "select-one":
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this.renderSelectInput();
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break;
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case "select-multiple":
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this.renderMultipleSelectInput();
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break;
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default:
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rthis.renderTextInput();
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break;
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}
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}
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destroy() {
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this.options = null;
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this.element = null;
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this.initialised = null;
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this.removeEventListeners(this.input);
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}
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};
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(function(){
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let input1 = document.getElementById(1);
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let input2 = document.getElementById(2);
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let input3 = document.getElementById(3);
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let input4 = document.getElementById(4);
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let input5 = document.getElementById(5);
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let choices1 = new Choices({
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element : input1,
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delimiter: ' ',
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maxItems: 5,
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// callbackOnRemoveItem: function(value) {
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// console.log(value);
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// },
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// callbackOnAddItem: function(item, value) {
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// console.log(item, value);
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// }
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});
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let choices2 = new Choices({
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element : input2,
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allowDuplicates: false,
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editItems: true,
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});
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let choices3 = new Choices({
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element : input3,
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allowDuplicates: false,
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editItems: true,
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regexFilter: /^(([^<>()\[\]\\.,;:\s@"]+(\.[^<>()\[\]\\.,;:\s@"]+)*)|(".+"))@((\[[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}])|(([a-zA-Z\-0-9]+\.)+[a-zA-Z]{2,}))$/
|
|
});
|
|
|
|
let choices4 = new Choices({
|
|
element : input4,
|
|
addItems: false
|
|
});
|
|
|
|
let choices5 = new Choices({
|
|
element: input5,
|
|
prependValue: 'item-',
|
|
appendValue: `-${Date.now()}`
|
|
});
|
|
})(); |