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micromodal.js
455 lines
| 1 | (function (global, factory) { |
| 2 | typeof exports === 'object' && typeof module !== 'undefined' ? module.exports = factory() : |
| 3 | typeof define === 'function' && define.amd ? define(factory) : |
| 4 | (global = global || self, global.MicroModal = factory()); |
| 5 | }(this, (function () { 'use strict'; |
| 6 | |
| 7 | function _classCallCheck(instance, Constructor) { |
| 8 | if (!(instance instanceof Constructor)) { |
| 9 | throw new TypeError("Cannot call a class as a function"); |
| 10 | } |
| 11 | } |
| 12 | |
| 13 | function _defineProperties(target, props) { |
| 14 | for (var i = 0; i < props.length; i++) { |
| 15 | var descriptor = props[i]; |
| 16 | descriptor.enumerable = descriptor.enumerable || false; |
| 17 | descriptor.configurable = true; |
| 18 | if ("value" in descriptor) descriptor.writable = true; |
| 19 | Object.defineProperty(target, descriptor.key, descriptor); |
| 20 | } |
| 21 | } |
| 22 | |
| 23 | function _createClass(Constructor, protoProps, staticProps) { |
| 24 | if (protoProps) _defineProperties(Constructor.prototype, protoProps); |
| 25 | if (staticProps) _defineProperties(Constructor, staticProps); |
| 26 | return Constructor; |
| 27 | } |
| 28 | |
| 29 | function _toConsumableArray(arr) { |
| 30 | return _arrayWithoutHoles(arr) || _iterableToArray(arr) || _unsupportedIterableToArray(arr) || _nonIterableSpread(); |
| 31 | } |
| 32 | |
| 33 | function _arrayWithoutHoles(arr) { |
| 34 | if (Array.isArray(arr)) return _arrayLikeToArray(arr); |
| 35 | } |
| 36 | |
| 37 | function _iterableToArray(iter) { |
| 38 | if (typeof Symbol !== "undefined" && Symbol.iterator in Object(iter)) return Array.from(iter); |
| 39 | } |
| 40 | |
| 41 | function _unsupportedIterableToArray(o, minLen) { |
| 42 | if (!o) return; |
| 43 | if (typeof o === "string") return _arrayLikeToArray(o, minLen); |
| 44 | var n = Object.prototype.toString.call(o).slice(8, -1); |
| 45 | if (n === "Object" && o.constructor) n = o.constructor.name; |
| 46 | if (n === "Map" || n === "Set") return Array.from(n); |
| 47 | if (n === "Arguments" || /^(?:Ui|I)nt(?:8|16|32)(?:Clamped)?Array$/.test(n)) return _arrayLikeToArray(o, minLen); |
| 48 | } |
| 49 | |
| 50 | function _arrayLikeToArray(arr, len) { |
| 51 | if (len == null || len > arr.length) len = arr.length; |
| 52 | |
| 53 | for (var i = 0, arr2 = new Array(len); i < len; i++) arr2[i] = arr[i]; |
| 54 | |
| 55 | return arr2; |
| 56 | } |
| 57 | |
| 58 | function _nonIterableSpread() { |
| 59 | throw new TypeError("Invalid attempt to spread non-iterable instance.\nIn order to be iterable, non-array objects must have a [Symbol.iterator]() method."); |
| 60 | } |
| 61 | |
| 62 | var MicroModal = function () { |
| 63 | |
| 64 | var FOCUSABLE_ELEMENTS = ['a[href]', 'area[href]', 'input:not([disabled]):not([type="hidden"]):not([aria-hidden])', 'select:not([disabled]):not([aria-hidden])', 'textarea:not([disabled]):not([aria-hidden])', 'button:not([disabled]):not([aria-hidden])', 'iframe', 'object', 'embed', '[contenteditable]', '[tabindex]:not([tabindex^="-"])']; |
| 65 | |
| 66 | var Modal = /*#__PURE__*/function () { |
| 67 | function Modal(_ref) { |
| 68 | var targetModal = _ref.targetModal, |
| 69 | _ref$triggers = _ref.triggers, |
| 70 | triggers = _ref$triggers === void 0 ? [] : _ref$triggers, |
| 71 | _ref$onShow = _ref.onShow, |
| 72 | onShow = _ref$onShow === void 0 ? function () {} : _ref$onShow, |
| 73 | _ref$onClose = _ref.onClose, |
| 74 | onClose = _ref$onClose === void 0 ? function () {} : _ref$onClose, |
| 75 | _ref$openTrigger = _ref.openTrigger, |
| 76 | openTrigger = _ref$openTrigger === void 0 ? 'data-micromodal-trigger' : _ref$openTrigger, |
| 77 | _ref$closeTrigger = _ref.closeTrigger, |
| 78 | closeTrigger = _ref$closeTrigger === void 0 ? 'data-micromodal-close' : _ref$closeTrigger, |
| 79 | _ref$openClass = _ref.openClass, |
| 80 | openClass = _ref$openClass === void 0 ? 'is-open' : _ref$openClass, |
| 81 | _ref$disableScroll = _ref.disableScroll, |
| 82 | disableScroll = _ref$disableScroll === void 0 ? false : _ref$disableScroll, |
| 83 | _ref$disableFocus = _ref.disableFocus, |
| 84 | disableFocus = _ref$disableFocus === void 0 ? false : _ref$disableFocus, |
| 85 | _ref$awaitCloseAnimat = _ref.awaitCloseAnimation, |
| 86 | awaitCloseAnimation = _ref$awaitCloseAnimat === void 0 ? false : _ref$awaitCloseAnimat, |
| 87 | _ref$awaitOpenAnimati = _ref.awaitOpenAnimation, |
| 88 | awaitOpenAnimation = _ref$awaitOpenAnimati === void 0 ? false : _ref$awaitOpenAnimati, |
| 89 | _ref$debugMode = _ref.debugMode, |
| 90 | debugMode = _ref$debugMode === void 0 ? false : _ref$debugMode; |
| 91 | |
| 92 | _classCallCheck(this, Modal); |
| 93 | |
| 94 | // Save a reference of the modal |
| 95 | this.modal = document.getElementById(targetModal); // Save a reference to the passed config |
| 96 | |
| 97 | this.config = { |
| 98 | debugMode: debugMode, |
| 99 | disableScroll: disableScroll, |
| 100 | openTrigger: openTrigger, |
| 101 | closeTrigger: closeTrigger, |
| 102 | openClass: openClass, |
| 103 | onShow: onShow, |
| 104 | onClose: onClose, |
| 105 | awaitCloseAnimation: awaitCloseAnimation, |
| 106 | awaitOpenAnimation: awaitOpenAnimation, |
| 107 | disableFocus: disableFocus |
| 108 | }; // Register click events only if pre binding eventListeners |
| 109 | |
| 110 | if (triggers.length > 0) this.registerTriggers.apply(this, _toConsumableArray(triggers)); // pre bind functions for event listeners |
| 111 | |
| 112 | this.onClick = this.onClick.bind(this); |
| 113 | this.onKeydown = this.onKeydown.bind(this); |
| 114 | } |
| 115 | /** |
| 116 | * Loops through all openTriggers and binds click event |
| 117 | * @param {array} triggers [Array of node elements] |
| 118 | * @return {void} |
| 119 | */ |
| 120 | |
| 121 | |
| 122 | _createClass(Modal, [{ |
| 123 | key: "registerTriggers", |
| 124 | value: function registerTriggers() { |
| 125 | var _this = this; |
| 126 | |
| 127 | for (var _len = arguments.length, triggers = new Array(_len), _key = 0; _key < _len; _key++) { |
| 128 | triggers[_key] = arguments[_key]; |
| 129 | } |
| 130 | |
| 131 | triggers.filter(Boolean).forEach(function (trigger) { |
| 132 | trigger.addEventListener('click', function (event) { |
| 133 | return _this.showModal(event); |
| 134 | }); |
| 135 | }); |
| 136 | } |
| 137 | }, { |
| 138 | key: "showModal", |
| 139 | value: function showModal() { |
| 140 | var _this2 = this; |
| 141 | |
| 142 | var event = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : null; |
| 143 | this.activeElement = document.activeElement; |
| 144 | this.modal.setAttribute('aria-hidden', 'false'); |
| 145 | this.modal.classList.add(this.config.openClass); |
| 146 | this.scrollBehaviour('disable'); |
| 147 | this.addEventListeners(); |
| 148 | |
| 149 | if (this.config.awaitOpenAnimation) { |
| 150 | var handler = function handler() { |
| 151 | _this2.modal.removeEventListener('animationend', handler, false); |
| 152 | |
| 153 | _this2.setFocusToFirstNode(); |
| 154 | }; |
| 155 | |
| 156 | this.modal.addEventListener('animationend', handler, false); |
| 157 | } else { |
| 158 | this.setFocusToFirstNode(); |
| 159 | } |
| 160 | |
| 161 | this.config.onShow(this.modal, this.activeElement, event); |
| 162 | } |
| 163 | }, { |
| 164 | key: "closeModal", |
| 165 | value: function closeModal() { |
| 166 | var event = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : null; |
| 167 | var modal = this.modal; |
| 168 | this.modal.setAttribute('aria-hidden', 'true'); |
| 169 | this.removeEventListeners(); |
| 170 | this.scrollBehaviour('enable'); |
| 171 | |
| 172 | if (this.activeElement && this.activeElement.focus) { |
| 173 | this.activeElement.focus(); |
| 174 | } |
| 175 | |
| 176 | this.config.onClose(this.modal, this.activeElement, event); |
| 177 | |
| 178 | if (this.config.awaitCloseAnimation) { |
| 179 | var openClass = this.config.openClass; // <- old school ftw |
| 180 | |
| 181 | this.modal.addEventListener('animationend', function handler() { |
| 182 | modal.classList.remove(openClass); |
| 183 | modal.removeEventListener('animationend', handler, false); |
| 184 | }, false); |
| 185 | } else { |
| 186 | modal.classList.remove(this.config.openClass); |
| 187 | } |
| 188 | } |
| 189 | }, { |
| 190 | key: "closeModalById", |
| 191 | value: function closeModalById(targetModal) { |
| 192 | this.modal = document.getElementById(targetModal); |
| 193 | if (this.modal) this.closeModal(); |
| 194 | } |
| 195 | }, { |
| 196 | key: "scrollBehaviour", |
| 197 | value: function scrollBehaviour(toggle) { |
| 198 | if (!this.config.disableScroll) return; |
| 199 | var body = document.querySelector('body'); |
| 200 | |
| 201 | switch (toggle) { |
| 202 | case 'enable': |
| 203 | Object.assign(body.style, { |
| 204 | overflow: '' |
| 205 | }); |
| 206 | break; |
| 207 | |
| 208 | case 'disable': |
| 209 | Object.assign(body.style, { |
| 210 | overflow: 'hidden' |
| 211 | }); |
| 212 | break; |
| 213 | } |
| 214 | } |
| 215 | }, { |
| 216 | key: "addEventListeners", |
| 217 | value: function addEventListeners() { |
| 218 | this.modal.addEventListener('touchstart', this.onClick); |
| 219 | this.modal.addEventListener('click', this.onClick); |
| 220 | document.addEventListener('keydown', this.onKeydown); |
| 221 | } |
| 222 | }, { |
| 223 | key: "removeEventListeners", |
| 224 | value: function removeEventListeners() { |
| 225 | this.modal.removeEventListener('touchstart', this.onClick); |
| 226 | this.modal.removeEventListener('click', this.onClick); |
| 227 | document.removeEventListener('keydown', this.onKeydown); |
| 228 | } |
| 229 | }, { |
| 230 | key: "onClick", |
| 231 | value: function onClick(event) { |
| 232 | if (event.target.hasAttribute(this.config.closeTrigger)) { |
| 233 | this.closeModal(event); |
| 234 | } |
| 235 | } |
| 236 | }, { |
| 237 | key: "onKeydown", |
| 238 | value: function onKeydown(event) { |
| 239 | if (event.keyCode === 27) this.closeModal(event); // esc |
| 240 | |
| 241 | if (event.keyCode === 9) this.retainFocus(event); // tab |
| 242 | |
| 243 | if (event.keyCode === 13) { // enter |
| 244 | var modal = jQuery('#' + this.modal.id); |
| 245 | modal.find('.button:visible:first').click(); |
| 246 | } |
| 247 | } |
| 248 | }, { |
| 249 | key: "getFocusableNodes", |
| 250 | value: function getFocusableNodes() { |
| 251 | var nodes = this.modal.querySelectorAll(FOCUSABLE_ELEMENTS); |
| 252 | return Array.apply(void 0, _toConsumableArray(nodes)); |
| 253 | } |
| 254 | /** |
| 255 | * Tries to set focus on a node which is not a close trigger |
| 256 | * if no other nodes exist then focuses on first close trigger |
| 257 | */ |
| 258 | |
| 259 | }, { |
| 260 | key: "setFocusToFirstNode", |
| 261 | value: function setFocusToFirstNode() { |
| 262 | var _this3 = this; |
| 263 | |
| 264 | if (this.config.disableFocus) return; |
| 265 | var focusableNodes = this.getFocusableNodes(); // no focusable nodes |
| 266 | |
| 267 | if (focusableNodes.length === 0) return; // remove nodes on whose click, the modal closes |
| 268 | // could not think of a better name :( |
| 269 | |
| 270 | var nodesWhichAreNotCloseTargets = focusableNodes.filter(function (node) { |
| 271 | return !node.hasAttribute(_this3.config.closeTrigger); |
| 272 | }); |
| 273 | if (nodesWhichAreNotCloseTargets.length > 0) nodesWhichAreNotCloseTargets[0].focus(); |
| 274 | if (nodesWhichAreNotCloseTargets.length === 0) focusableNodes[0].focus(); |
| 275 | } |
| 276 | }, { |
| 277 | key: "retainFocus", |
| 278 | value: function retainFocus(event) { |
| 279 | var focusableNodes = this.getFocusableNodes(); // no focusable nodes |
| 280 | |
| 281 | if (focusableNodes.length === 0) return; |
| 282 | /** |
| 283 | * Filters nodes which are hidden to prevent |
| 284 | * focus leak outside modal |
| 285 | */ |
| 286 | |
| 287 | focusableNodes = focusableNodes.filter(function (node) { |
| 288 | return node.offsetParent !== null; |
| 289 | }); // if disableFocus is true |
| 290 | |
| 291 | if (!this.modal.contains(document.activeElement)) { |
| 292 | focusableNodes[0].focus(); |
| 293 | } else { |
| 294 | var focusedItemIndex = focusableNodes.indexOf(document.activeElement); |
| 295 | |
| 296 | if (event.shiftKey && focusedItemIndex === 0) { |
| 297 | focusableNodes[focusableNodes.length - 1].focus(); |
| 298 | event.preventDefault(); |
| 299 | } |
| 300 | |
| 301 | if (!event.shiftKey && focusableNodes.length > 0 && focusedItemIndex === focusableNodes.length - 1) { |
| 302 | focusableNodes[0].focus(); |
| 303 | event.preventDefault(); |
| 304 | } |
| 305 | } |
| 306 | } |
| 307 | }]); |
| 308 | |
| 309 | return Modal; |
| 310 | }(); |
| 311 | /** |
| 312 | * Modal prototype ends. |
| 313 | * Here on code is responsible for detecting and |
| 314 | * auto binding event handlers on modal triggers |
| 315 | */ |
| 316 | // Keep a reference to the opened modal |
| 317 | |
| 318 | |
| 319 | var activeModal = null; |
| 320 | /** |
| 321 | * Generates an associative array of modals and it's |
| 322 | * respective triggers |
| 323 | * @param {array} triggers An array of all triggers |
| 324 | * @param {string} triggerAttr The data-attribute which triggers the module |
| 325 | * @return {array} |
| 326 | */ |
| 327 | |
| 328 | var generateTriggerMap = function generateTriggerMap(triggers, triggerAttr) { |
| 329 | var triggerMap = []; |
| 330 | triggers.forEach(function (trigger) { |
| 331 | var targetModal = trigger.attributes[triggerAttr].value; |
| 332 | if (triggerMap[targetModal] === undefined) triggerMap[targetModal] = []; |
| 333 | triggerMap[targetModal].push(trigger); |
| 334 | }); |
| 335 | return triggerMap; |
| 336 | }; |
| 337 | /** |
| 338 | * Validates whether a modal of the given id exists |
| 339 | * in the DOM |
| 340 | * @param {number} id The id of the modal |
| 341 | * @return {boolean} |
| 342 | */ |
| 343 | |
| 344 | |
| 345 | var validateModalPresence = function validateModalPresence(id) { |
| 346 | if (!document.getElementById(id)) { |
| 347 | console.warn("MicroModal: \u2757Seems like you have missed %c'".concat(id, "'"), 'background-color: #f8f9fa;color: #50596c;font-weight: bold;', 'ID somewhere in your code. Refer example below to resolve it.'); |
| 348 | console.warn("%cExample:", 'background-color: #f8f9fa;color: #50596c;font-weight: bold;', "<div class=\"modal\" id=\"".concat(id, "\"></div>")); |
| 349 | return false; |
| 350 | } |
| 351 | }; |
| 352 | /** |
| 353 | * Validates if there are modal triggers present |
| 354 | * in the DOM |
| 355 | * @param {array} triggers An array of data-triggers |
| 356 | * @return {boolean} |
| 357 | */ |
| 358 | |
| 359 | |
| 360 | var validateTriggerPresence = function validateTriggerPresence(triggers) { |
| 361 | if (triggers.length <= 0) { |
| 362 | console.warn("MicroModal: \u2757Please specify at least one %c'micromodal-trigger'", 'background-color: #f8f9fa;color: #50596c;font-weight: bold;', 'data attribute.'); |
| 363 | console.warn("%cExample:", 'background-color: #f8f9fa;color: #50596c;font-weight: bold;', "<a href=\"#\" data-micromodal-trigger=\"my-modal\"></a>"); |
| 364 | return false; |
| 365 | } |
| 366 | }; |
| 367 | /** |
| 368 | * Checks if triggers and their corresponding modals |
| 369 | * are present in the DOM |
| 370 | * @param {array} triggers Array of DOM nodes which have data-triggers |
| 371 | * @param {array} triggerMap Associative array of modals and their triggers |
| 372 | * @return {boolean} |
| 373 | */ |
| 374 | |
| 375 | |
| 376 | var validateArgs = function validateArgs(triggers, triggerMap) { |
| 377 | validateTriggerPresence(triggers); |
| 378 | if (!triggerMap) return true; |
| 379 | |
| 380 | for (var id in triggerMap) { |
| 381 | validateModalPresence(id); |
| 382 | } |
| 383 | |
| 384 | return true; |
| 385 | }; |
| 386 | /** |
| 387 | * Binds click handlers to all modal triggers |
| 388 | * @param {object} config [description] |
| 389 | * @return void |
| 390 | */ |
| 391 | |
| 392 | |
| 393 | var init = function init(config) { |
| 394 | // Create an config object with default openTrigger |
| 395 | var options = Object.assign({}, { |
| 396 | openTrigger: 'data-micromodal-trigger' |
| 397 | }, config); // Collects all the nodes with the trigger |
| 398 | |
| 399 | var triggers = _toConsumableArray(document.querySelectorAll("[".concat(options.openTrigger, "]"))); // Makes a mappings of modals with their trigger nodes |
| 400 | |
| 401 | |
| 402 | var triggerMap = generateTriggerMap(triggers, options.openTrigger); // Checks if modals and triggers exist in dom |
| 403 | |
| 404 | if (options.debugMode === true && validateArgs(triggers, triggerMap) === false) return; // For every target modal creates a new instance |
| 405 | |
| 406 | for (var key in triggerMap) { |
| 407 | var value = triggerMap[key]; |
| 408 | options.targetModal = key; |
| 409 | options.triggers = _toConsumableArray(value); |
| 410 | activeModal = new Modal(options); // eslint-disable-line no-new |
| 411 | } |
| 412 | }; |
| 413 | /** |
| 414 | * Shows a particular modal |
| 415 | * @param {string} targetModal [The id of the modal to display] |
| 416 | * @param {object} config [The configuration object to pass] |
| 417 | * @return {void} |
| 418 | */ |
| 419 | |
| 420 | |
| 421 | var show = function show(targetModal, config) { |
| 422 | var options = config || {}; |
| 423 | options.targetModal = targetModal; // Checks if modals and triggers exist in dom |
| 424 | |
| 425 | if (options.debugMode === true && validateModalPresence(targetModal) === false) return; // clear events in case previous modal wasn't close |
| 426 | |
| 427 | if (activeModal) activeModal.removeEventListeners(); // stores reference to active modal |
| 428 | |
| 429 | activeModal = new Modal(options); // eslint-disable-line no-new |
| 430 | |
| 431 | activeModal.showModal(); |
| 432 | }; |
| 433 | /** |
| 434 | * Closes the active modal |
| 435 | * @param {string} targetModal [The id of the modal to close] |
| 436 | * @return {void} |
| 437 | */ |
| 438 | |
| 439 | |
| 440 | var close = function close(targetModal) { |
| 441 | targetModal ? activeModal.closeModalById(targetModal) : activeModal.closeModal(); |
| 442 | }; |
| 443 | |
| 444 | return { |
| 445 | init: init, |
| 446 | show: show, |
| 447 | close: close |
| 448 | }; |
| 449 | }(); |
| 450 | window.MicroModal = MicroModal; |
| 451 | |
| 452 | return MicroModal; |
| 453 | |
| 454 | }))); |
| 455 |