mirror of
https://github.com/Choices-js/Choices.git
synced 2024-05-19 14:06:33 +02:00
541 lines
16 KiB
JavaScript
541 lines
16 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, selectItemFromStore } from './actions/index';
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import { hasClass, wrap, getSiblings, isType, strToEl, extend } from './lib/utils.js';
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export class Choices {
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constructor(options) {
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const fakeEl = document.createElement("fakeel");
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const userOptions = options || {};
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const defaultOptions = {
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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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selectAll: true,
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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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// Initial instance state
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this.initialised = false;
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// Merge options with user options
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this.options = extend(defaultOptions, userOptions || {});
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// Create data store
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this.store = createStore(choices);
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// Cutting the mustard
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this.supports = 'querySelector' in document && 'addEventListener' in document && 'classList' in fakeEl;
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// Retrieve triggering element (i.e. element with 'data-choice' trigger)
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this.element = this.options.element;
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// Bind methods
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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.render = this.render.bind(this);
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// Let's have it large
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this.init();
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}
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/* State tests */
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/**
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* Whether input is disabled
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* @return {Boolean}
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*/
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isDisabled() {
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return (this.input.disabled) ? true : false;
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}
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/**
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* Whether there are no values
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* @return {Boolean}
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*/
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isEmpty() {
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return (this.store.getState().length === 0) ? true : false;
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}
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/* Event handling */
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/**
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* Handle keydown event
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* @param {Object} e Event
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* @return
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*/
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onKeyDown(e) {
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const storeValues = this.store.getState();
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const ctrlDownKey = e.ctrlKey || e.metaKey;
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const deleteKey = 8 || 46;
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const enterKey = 13;
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const aKey = 65;
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// If we are typing in the input
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if(e.target === this.input) {
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// If CTRL + A or CMD + A have been pressed and there are items to select
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if (ctrlDownKey && e.keyCode === aKey && this.list && this.list.children) {
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let handleSelectAll = () => {
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if(this.options.removeItems && !this.input.value && this.options.selectAll) {
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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 === enterKey && 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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canUpdate = !storeValues.some((item) => {
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return item.value === value;
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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(value);
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this.clearInput(this.element);
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}
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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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}
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// If backspace or delete key is pressed and the input has no value
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if (e.keyCode === deleteKey && !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 && !this.options.editItems) {
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this.selectItem(lastItem);
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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 === 0) {
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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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/**
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* Handle click event
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* @param {Object} e Event
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* @return
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*/
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onClick(e) {
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if(e.target.tagName === 'LI') {
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let item = e.target;
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let handleClick = (item) => {
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let passedId = item.getAttribute('data-choice-id');
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let items = this.list.children;
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// We only want to select one item with a click
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// so we deselect any items that aren't the target
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for (var i = 0; i < items.length; i++) {
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let singleItem = items[i];
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let id = singleItem.getAttribute('data-choice-id');;
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if(id === passedId && !singleItem.classList.contains('is-selected')) {
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this.selectItem(singleItem);
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} else {
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this.deselectItem(singleItem);
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}
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}
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}
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handleClick(item);
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}
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}
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/* Methods */
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/**
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* Set value of input to blank
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* @return
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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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/**
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* Tests value against a regular expression
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* @param {string} value Value to test
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* @return {Boolean} Whether test passed/failed
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*/
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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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/**
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* Select item (a selected item can be deleted)
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* @param {Element} item Element to select
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* @return
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*/
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selectItem(item) {
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let id = item.getAttribute('data-choice-id');
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this.store.dispatch(selectItemFromStore(id, true));
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}
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/**
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* Deselect item
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* @param {Element} item Element to de-select
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* @return
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*/
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deselectItem(item) {
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let id = item.getAttribute('data-choice-id');
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this.store.dispatch(selectItemFromStore(id, false));
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}
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/**
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* Select items within array
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* @param {Array} items Array of items to select
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* @return
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*/
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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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this.selectItem(item);
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};
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}
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/**
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* Add item to store with correct value
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* @param {String} value Value to add to store
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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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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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// Generate unique id
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let id = this.store.getState().length + 1;
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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(id, 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, id));
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}
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/**
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* Remove item from store
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* @param
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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.getAttribute('data-choice-id');
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let value = item.innerHTML;
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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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}
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/**
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* Remove all items from array
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* @param {Array} items Items to remove from store
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* @return
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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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}
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};
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}
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/* Rendering */
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/**
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* Create DOM structure around passed text element
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* @return
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*/
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renderTextInput() {
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/*
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Template:
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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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*/
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let containerOuter = strToEl('<div class="choices choices--active"></div>');
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let containerInner = strToEl('<div class="choices__inner"></div>');
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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 = strToEl('<div class="choices__list choices__list--items"></div>');
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let input = strToEl('<input type="text" class="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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containerOuter.appendChild(containerInner);
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containerInner.appendChild(list);
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containerInner.appendChild(input);
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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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// Add any preset values seperated by delimiter
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let valueArray = this.element.value !== '' ? this.element.value.split(this.options.delimiter) : [];
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valueArray.forEach((value) => {
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this.addItem(value);
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});
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// Subscribe to store
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this.store.subscribe(this.render);
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// Render any items
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this.render();
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// Trigger event listeners
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this.addEventListeners();
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}
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addEventListeners() {
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document.addEventListener('keydown', this.onKeyDown);
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this.list.addEventListener('click', this.onClick);
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}
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removeEventListeners() {
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document.removeEventListener('keydown', this.onKeyDown);
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this.list.removeEventListener('click', this.onClick);
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}
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/**
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* Render DOM with values
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* @return
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*/
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render() {
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let state = this.store.getState();
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// Simplify store data to just values
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let valueArray = state.reduce((prev, current) => {
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prev.push(current.value);
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return prev;
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}, []);
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// Assign hidden input array of values
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this.element.value = valueArray.join(this.options.delimiter);
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// Clear list
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this.list.innerHTML = '';
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// Add each list item to list
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state.forEach((item) => {
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if(item.active) {
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// Create new list element
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let listItem = strToEl(`<div class="choices__item ${ item.selected ? 'is-selected' : '' }" data-choice-id="${ item.id }" data-choice-selected="${ item.selected }">${ item.value }</div>`);
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// Append it to list
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this.list.appendChild(listItem);
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}
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});
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console.log(state);
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}
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/**
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* Determine how an input should be rendered
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* @return {Element} Input to test
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*/
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renderInput(input) {
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if (this.options.debug) console.debug('Render');
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switch (input.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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this.renderTextInput();
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break;
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}
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}
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/**
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* Initialise Choices
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* @return
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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.renderInput(this.element);
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}
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/**
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* Destroy Choices and nullify values
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* @return
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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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}
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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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editItems: true,
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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,}))$/
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});
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let choices4 = new Choices({
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element : input4,
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addItems: false
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});
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let choices5 = new Choices({
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element: input5,
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prependValue: 'item-',
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appendValue: `-${Date.now()}`
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});
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})(); |