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micromodal.es.js 15.73 KiB
// see https://github.com/ghosh/Micromodal/pull/351
function _classCallCheck(instance, Constructor) {
if (!(instance instanceof Constructor)) {
throw new TypeError("Cannot call a class as a function");
}
}
function _defineProperties(target, props) {
for (var i = 0; i < props.length; i++) {
var descriptor = props[i];
descriptor.enumerable = descriptor.enumerable || false;
descriptor.configurable = true;
if ("value" in descriptor) descriptor.writable = true;
Object.defineProperty(target, descriptor.key, descriptor);
}
}
function _createClass(Constructor, protoProps, staticProps) {
if (protoProps) _defineProperties(Constructor.prototype, protoProps);
if (staticProps) _defineProperties(Constructor, staticProps);
return Constructor;
}
function _toConsumableArray(arr) {
return _arrayWithoutHoles(arr) || _iterableToArray(arr) || _unsupportedIterableToArray(arr) || _nonIterableSpread();
}
function _arrayWithoutHoles(arr) {
if (Array.isArray(arr)) return _arrayLikeToArray(arr);
}
function _iterableToArray(iter) {
if (typeof Symbol !== "undefined" && Symbol.iterator in Object(iter)) return Array.from(iter);
}
function _unsupportedIterableToArray(o, minLen) {
if (!o) return;
if (typeof o === "string") return _arrayLikeToArray(o, minLen);
var n = Object.prototype.toString.call(o).slice(8, -1);
if (n === "Object" && o.constructor) n = o.constructor.name;
if (n === "Map" || n === "Set") return Array.from(n);
if (n === "Arguments" || /^(?:Ui|I)nt(?:8|16|32)(?:Clamped)?Array$/.test(n)) return _arrayLikeToArray(o, minLen);
}
function _arrayLikeToArray(arr, len) {
if (len == null || len > arr.length) len = arr.length;
for (var i = 0, arr2 = new Array(len); i < len; i++) arr2[i] = arr[i];
return arr2;
}
function _nonIterableSpread() {
throw new TypeError("Invalid attempt to spread non-iterable instance.\nIn order to be iterable, non-array objects must have a [Symbol.iterator]() method.");
}
var MicroModal = function () {
var FOCUSABLE_ELEMENTS = ['a[href]', 'area[href]', 'input:not([disabled]):not([type="hidden"]):not([aria-hidden])', 'select:not([disabled]):not([aria-hidden])', 'textarea:not([disabled]):not([aria-hidden])', 'button:not([disabled]):not([aria-hidden])', 'iframe', 'object', 'embed', '[contenteditable]', '[tabindex]:not([tabindex^="-"])'];
var Modal = /*#__PURE__*/function () {
function Modal(_ref) {
var targetModal = _ref.targetModal,
_ref$triggers = _ref.triggers,
triggers = _ref$triggers === void 0 ? [] : _ref$triggers,
_ref$onShow = _ref.onShow,
onShow = _ref$onShow === void 0 ? function () {} : _ref$onShow,
_ref$onClose = _ref.onClose,
onClose = _ref$onClose === void 0 ? function () {} : _ref$onClose, _ref$openTrigger = _ref.openTrigger,
openTrigger = _ref$openTrigger === void 0 ? 'data-micromodal-trigger' : _ref$openTrigger,
_ref$closeTrigger = _ref.closeTrigger,
closeTrigger = _ref$closeTrigger === void 0 ? 'data-micromodal-close' : _ref$closeTrigger,
_ref$openClass = _ref.openClass,
openClass = _ref$openClass === void 0 ? 'is-open' : _ref$openClass,
_ref$disableScroll = _ref.disableScroll,
disableScroll = _ref$disableScroll === void 0 ? false : _ref$disableScroll,
_ref$disableFocus = _ref.disableFocus,
disableFocus = _ref$disableFocus === void 0 ? false : _ref$disableFocus,
_ref$awaitCloseAnimat = _ref.awaitCloseAnimation,
awaitCloseAnimation = _ref$awaitCloseAnimat === void 0 ? false : _ref$awaitCloseAnimat,
_ref$awaitOpenAnimati = _ref.awaitOpenAnimation,
awaitOpenAnimation = _ref$awaitOpenAnimati === void 0 ? false : _ref$awaitOpenAnimati,
_ref$debugMode = _ref.debugMode,
debugMode = _ref$debugMode === void 0 ? false : _ref$debugMode;
_classCallCheck(this, Modal);
// Save a reference of the modal
this.modal = this.modal = typeof targetModal === "string" ? document.getElementById(targetModal) : targetModal; // Save a reference to the passed config
this.config = {
debugMode: debugMode,
disableScroll: disableScroll,
openTrigger: openTrigger,
closeTrigger: closeTrigger,
openClass: openClass,
onShow: onShow,
onClose: onClose,
awaitCloseAnimation: awaitCloseAnimation,
awaitOpenAnimation: awaitOpenAnimation,
disableFocus: disableFocus
}; // Register click events only if pre binding eventListeners
if (triggers.length > 0) this.registerTriggers.apply(this, _toConsumableArray(triggers)); // pre bind functions for event listeners
this.onClick = this.onClick.bind(this);
this.onKeydown = this.onKeydown.bind(this);
}
/**
* Loops through all openTriggers and binds click event
* @param {array} triggers [Array of node elements]
* @return {void}
*/
_createClass(Modal, [{
key: "registerTriggers",
value: function registerTriggers() {
var _this = this;
for (var _len = arguments.length, triggers = new Array(_len), _key = 0; _key < _len; _key++) {
triggers[_key] = arguments[_key];
}
triggers.filter(Boolean).forEach(function (trigger) {
trigger.addEventListener('click', function (event) {
return _this.showModal(event);
});
});
}
}, {
key: "showModal",
value: function showModal() {
var _this2 = this;
var event = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : null;
this.activeElement = document.activeElement;
this.modal.setAttribute('aria-hidden', 'false'); this.modal.classList.add(this.config.openClass);
this.scrollBehaviour('disable');
this.addEventListeners();
if (this.config.awaitOpenAnimation) {
var handler = function handler() {
_this2.modal.removeEventListener('animationend', handler, false);
_this2.setFocusToFirstNode();
};
this.modal.addEventListener('animationend', handler, false);
} else {
this.setFocusToFirstNode();
}
this.config.onShow(this.modal, this.activeElement, event);
}
}, {
key: "closeModal",
value: function closeModal() {
var event = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : null;
var modal = this.modal;
this.modal.setAttribute('aria-hidden', 'true');
this.removeEventListeners();
this.scrollBehaviour('enable');
if (this.activeElement && this.activeElement.focus) {
this.activeElement.focus();
}
this.config.onClose(this.modal, this.activeElement, event);
if (this.config.awaitCloseAnimation) {
var openClass = this.config.openClass; // <- old school ftw
this.modal.addEventListener('animationend', function handler() {
modal.classList.remove(openClass);
modal.removeEventListener('animationend', handler, false);
}, false);
} else {
modal.classList.remove(this.config.openClass);
}
}
}, {
key: "closeModalById",
value: function closeModalById(targetModal) {
// added support to pass on an element or an id -> for webcomponents
if (targetModal instanceof HTMLElement) {
this.modal = targetModal;
}
else {
this.model = document.getElementById(targetModal);
}
if (this.modal) this.closeModal();
}
}, {
key: "scrollBehaviour",
value: function scrollBehaviour(toggle) {
if (!this.config.disableScroll) return;
var body = document.querySelector('body');
switch (toggle) {
case 'enable':
Object.assign(body.style, {
overflow: ''
});
break;
case 'disable': Object.assign(body.style, {
overflow: 'hidden'
});
break;
}
}
}, {
key: "addEventListeners",
value: function addEventListeners() {
this.modal.addEventListener('touchstart', this.onClick);
this.modal.addEventListener('click', this.onClick);
document.addEventListener('keydown', this.onKeydown);
}
}, {
key: "removeEventListeners",
value: function removeEventListeners() {
this.modal.removeEventListener('touchstart', this.onClick);
this.modal.removeEventListener('click', this.onClick);
document.removeEventListener('keydown', this.onKeydown);
}
}, {
key: "onClick",
value: function onClick(event) {
if (event.target.hasAttribute(this.config.closeTrigger)) {
this.closeModal(event);
}
}
}, {
key: "onKeydown",
value: function onKeydown(event) {
if (event.keyCode === 27) this.closeModal(event); // esc
if (event.keyCode === 9) this.retainFocus(event); // tab
}
}, {
key: "getFocusableNodes",
value: function getFocusableNodes() {
var nodes = this.modal.querySelectorAll(FOCUSABLE_ELEMENTS);
return Array.apply(void 0, _toConsumableArray(nodes));
}
/**
* Tries to set focus on a node which is not a close trigger
* if no other nodes exist then focuses on first close trigger
*/
}, {
key: "setFocusToFirstNode",
value: function setFocusToFirstNode() {
var _this3 = this;
if (this.config.disableFocus) return;
var focusableNodes = this.getFocusableNodes(); // no focusable nodes
if (focusableNodes.length === 0) return; // remove nodes on whose click, the modal closes
// could not think of a better name :(
var nodesWhichAreNotCloseTargets = focusableNodes.filter(function (node) {
return !node.hasAttribute(_this3.config.closeTrigger);
});
if (nodesWhichAreNotCloseTargets.length > 0) nodesWhichAreNotCloseTargets[0].focus();
if (nodesWhichAreNotCloseTargets.length === 0) focusableNodes[0].focus();
}
}, {
key: "retainFocus",
value: function retainFocus(event) {
var focusableNodes = this.getFocusableNodes(); // no focusable nodes
if (focusableNodes.length === 0) return;
/**
* Filters nodes which are hidden to prevent * focus leak outside modal
*/
focusableNodes = focusableNodes.filter(function (node) {
return node.offsetParent !== null;
}); // if disableFocus is true
if (!this.modal.contains(document.activeElement)) {
focusableNodes[0].focus();
} else {
var focusedItemIndex = focusableNodes.indexOf(document.activeElement);
if (event.shiftKey && focusedItemIndex === 0) {
focusableNodes[focusableNodes.length - 1].focus();
event.preventDefault();
}
if (!event.shiftKey && focusableNodes.length > 0 && focusedItemIndex === focusableNodes.length - 1) {
focusableNodes[0].focus();
event.preventDefault();
}
}
}
}]);
return Modal;
}();
/**
* Modal prototype ends.
* Here on code is responsible for detecting and
* auto binding event handlers on modal triggers
*/
// Keep a reference to the opened modal
var activeModal = null;
/**
* Generates an associative array of modals and it's
* respective triggers
* @param {array} triggers An array of all triggers
* @param {string} triggerAttr The data-attribute which triggers the module
* @return {array}
*/
var generateTriggerMap = function generateTriggerMap(triggers, triggerAttr) {
var triggerMap = [];
triggers.forEach(function (trigger) {
var targetModal = trigger.attributes[triggerAttr].value;
if (triggerMap[targetModal] === undefined) triggerMap[targetModal] = [];
triggerMap[targetModal].push(trigger);
});
return triggerMap;
};
/**
* Validates whether a modal of the given id exists
* in the DOM
* @param {number} id The id of the modal
* @return {boolean}
*/
var validateModalPresence = function validateModalPresence(id) {
if (!document.getElementById(id)) {
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.');
console.warn("%cExample:", 'background-color: #f8f9fa;color: #50596c;font-weight: bold;', "<div class=\"modal\" id=\"".concat(id, "\"></div>"));
return false;
}
};
/**
* Validates if there are modal triggers present * in the DOM
* @param {array} triggers An array of data-triggers
* @return {boolean}
*/
var validateTriggerPresence = function validateTriggerPresence(triggers) {
if (triggers.length <= 0) {
console.warn("MicroModal: \u2757Please specify at least one %c'micromodal-trigger'", 'background-color: #f8f9fa;color: #50596c;font-weight: bold;', 'data attribute.');
console.warn("%cExample:", 'background-color: #f8f9fa;color: #50596c;font-weight: bold;', "<a href=\"#\" data-micromodal-trigger=\"my-modal\"></a>");
return false;
}
};
/**
* Checks if triggers and their corresponding modals
* are present in the DOM
* @param {array} triggers Array of DOM nodes which have data-triggers
* @param {array} triggerMap Associative array of modals and their triggers
* @return {boolean}
*/
var validateArgs = function validateArgs(triggers, triggerMap) {
validateTriggerPresence(triggers);
if (!triggerMap) return true;
for (var id in triggerMap) {
validateModalPresence(id);
}
return true;
};
/**
* Binds click handlers to all modal triggers
* @param {object} config [description]
* @return void
*/
var init = function init(config) {
// Create an config object with default openTrigger
var options = Object.assign({}, {
openTrigger: 'data-micromodal-trigger'
}, config); // Collects all the nodes with the trigger
var triggers = _toConsumableArray(document.querySelectorAll("[".concat(options.openTrigger, "]"))); // Makes a mappings of modals with their trigger nodes
var triggerMap = generateTriggerMap(triggers, options.openTrigger); // Checks if modals and triggers exist in dom
if (options.debugMode === true && validateArgs(triggers, triggerMap) === false) return; // For every target modal creates a new instance
for (var key in triggerMap) {
var value = triggerMap[key];
options.targetModal = key;
options.triggers = _toConsumableArray(value);
activeModal = new Modal(options); // eslint-disable-line no-new
}
};
/**
* Shows a particular modal
* @param {string} targetModal [The id of the modal to display]
* @param {object} config [The configuration object to pass]
* @return {void}
*/
var show = function show(targetModal, config) {
var options = config || {};
options.targetModal = targetModal; // Checks if modals and triggers exist in dom
if (options.debugMode === true && validateModalPresence(targetModal) === false) return; // clear events in case previous modal wasn't close
if (activeModal) activeModal.removeEventListeners(); // stores reference to active modal
activeModal = new Modal(options); // eslint-disable-line no-new
activeModal.showModal();
};
/**
* Closes the active modal
* @param {string} targetModal [The id of the modal to close]
* @return {void}
*/
var close = function close(targetModal) {
targetModal ? activeModal.closeModalById(targetModal) : activeModal.closeModal();
};
return {
init: init,
show: show,
close: close
};
}();
window.MicroModal = MicroModal;
export default MicroModal;