mirror of
https://github.com/Choices-js/Choices.git
synced 2024-05-17 21:16:34 +02:00
383 lines
10 KiB
JavaScript
383 lines
10 KiB
JavaScript
'use strict';
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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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- Handle select input
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- Handle multiple select input ?
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*/
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class Choices {
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constructor(options) {
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const fakeEl = document.createElement("fakeelement");
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const USER_OPTIONS = options || {};
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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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create: true,
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maxItems: false,
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delimiter: ',',
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allowDuplicates: true,
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debug: false,
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placeholder: false,
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callbackOnInit: function(){},
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callbackOnRender: function(){},
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callbackOnKeyUp: function(){},
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callbackOnKeyDown: function(){},
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callbackOnEntry: function(){},
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callbackOnRemove: 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.initialised = false;
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this.supports = 'querySelector' in document && 'addEventListener' in document && 'classList' in fakeEl;
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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.element.value.replace(/\s/g, '').split(',') : [];
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console.log(this.valueArray);
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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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}
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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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}
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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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// console.log('Keyup');
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}
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onKeyDown(e) {
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let ctrlDown = e.ctrlKey || e.metaKey;
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// Handle select all
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if(ctrlDown && e.keyCode === 65) {
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for (let i = 0; i < this.list.children.length; i++) {
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let listItem = this.list.children[i];
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listItem.classList.add('is-selected');
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}
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}
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// Handle enter key
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if(e.keyCode === 13 && e.target.value) {
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let value = this.input.value;
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let handleEnterKey = () => {
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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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this.addItem(value);
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this.updateInputValue(value);
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this.clearInput(this.element);
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}
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};
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handleEnterKey();
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}
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if((e.keyCode === 8 || e.keyCode === 46) && !e.target.value) {
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let handleBackspaceKey = () => {
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let currentListItems = this.list.querySelectorAll('.choices__item');
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let lastItem = currentListItems[currentListItems.length - 1];
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lastItem.classList.add('is-selected');
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for (let i = 0; i < currentListItems.length; i++) {
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let listItem = currentListItems[i];
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if(listItem.classList.contains('is-selected')) {
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this.removeItem(listItem);
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this.removeInputValue(listItem.textContent);
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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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setPlaceholder() {
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}
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setValue() {
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}
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getValue() {
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}
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getPlaceholder() {
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}
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search() {
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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.toString();
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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.toString();
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}
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addItem(value) {
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if(this.options.debug) console.debug('Add item');
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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 = value;
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// Append it to list
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this.list.appendChild(item);
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}
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removeItem(item) {
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if(item) item.parentNode.removeChild(item);
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}
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init() {
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if(!this.supports) console.error('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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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';
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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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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(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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}
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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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console.warn('Choices does not support multiple select boxes');
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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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window.addEventListener('load', 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 choices1 = new Choices({
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element : input1,
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delimiter: ' ',
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maxItems: 5,
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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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});
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let choices3 = new Choices({
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element : input3
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});
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choices1.init();
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choices2.init();
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choices3.init();
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}); |