285 lines
9.4 KiB
JavaScript
285 lines
9.4 KiB
JavaScript
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/*!
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* Bootstrap event-handler.js v5.2.1 (https://getbootstrap.com/)
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* Copyright 2011-2022 The Bootstrap Authors (https://github.com/twbs/bootstrap/graphs/contributors)
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* Licensed under MIT (https://github.com/twbs/bootstrap/blob/main/LICENSE)
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*/
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(function (global, factory) {
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typeof exports === 'object' && typeof module !== 'undefined' ? module.exports = factory(require('../util/index')) :
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typeof define === 'function' && define.amd ? define(['../util/index'], factory) :
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(global = typeof globalThis !== 'undefined' ? globalThis : global || self, global.EventHandler = factory(global.Index));
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})(this, (function (index) { 'use strict';
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/**
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* --------------------------------------------------------------------------
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* Bootstrap (v5.2.1): dom/event-handler.js
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* Licensed under MIT (https://github.com/twbs/bootstrap/blob/main/LICENSE)
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* --------------------------------------------------------------------------
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*/
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/**
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* Constants
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*/
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const namespaceRegex = /[^.]*(?=\..*)\.|.*/;
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const stripNameRegex = /\..*/;
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const stripUidRegex = /::\d+$/;
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const eventRegistry = {}; // Events storage
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let uidEvent = 1;
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const customEvents = {
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mouseenter: 'mouseover',
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mouseleave: 'mouseout'
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};
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const nativeEvents = new Set(['click', 'dblclick', 'mouseup', 'mousedown', 'contextmenu', 'mousewheel', 'DOMMouseScroll', 'mouseover', 'mouseout', 'mousemove', 'selectstart', 'selectend', 'keydown', 'keypress', 'keyup', 'orientationchange', 'touchstart', 'touchmove', 'touchend', 'touchcancel', 'pointerdown', 'pointermove', 'pointerup', 'pointerleave', 'pointercancel', 'gesturestart', 'gesturechange', 'gestureend', 'focus', 'blur', 'change', 'reset', 'select', 'submit', 'focusin', 'focusout', 'load', 'unload', 'beforeunload', 'resize', 'move', 'DOMContentLoaded', 'readystatechange', 'error', 'abort', 'scroll']);
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/**
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* Private methods
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*/
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function makeEventUid(element, uid) {
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return uid && `${uid}::${uidEvent++}` || element.uidEvent || uidEvent++;
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}
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function getElementEvents(element) {
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const uid = makeEventUid(element);
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element.uidEvent = uid;
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eventRegistry[uid] = eventRegistry[uid] || {};
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return eventRegistry[uid];
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}
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function bootstrapHandler(element, fn) {
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return function handler(event) {
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hydrateObj(event, {
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delegateTarget: element
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});
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if (handler.oneOff) {
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EventHandler.off(element, event.type, fn);
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}
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return fn.apply(element, [event]);
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};
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}
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function bootstrapDelegationHandler(element, selector, fn) {
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return function handler(event) {
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const domElements = element.querySelectorAll(selector);
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for (let {
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target
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} = event; target && target !== this; target = target.parentNode) {
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for (const domElement of domElements) {
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if (domElement !== target) {
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continue;
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}
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hydrateObj(event, {
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delegateTarget: target
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});
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if (handler.oneOff) {
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EventHandler.off(element, event.type, selector, fn);
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}
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return fn.apply(target, [event]);
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}
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}
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};
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}
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function findHandler(events, callable, delegationSelector = null) {
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return Object.values(events).find(event => event.callable === callable && event.delegationSelector === delegationSelector);
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}
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function normalizeParameters(originalTypeEvent, handler, delegationFunction) {
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const isDelegated = typeof handler === 'string'; // todo: tooltip passes `false` instead of selector, so we need to check
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const callable = isDelegated ? delegationFunction : handler || delegationFunction;
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let typeEvent = getTypeEvent(originalTypeEvent);
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if (!nativeEvents.has(typeEvent)) {
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typeEvent = originalTypeEvent;
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}
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return [isDelegated, callable, typeEvent];
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}
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function addHandler(element, originalTypeEvent, handler, delegationFunction, oneOff) {
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if (typeof originalTypeEvent !== 'string' || !element) {
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return;
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}
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let [isDelegated, callable, typeEvent] = normalizeParameters(originalTypeEvent, handler, delegationFunction); // in case of mouseenter or mouseleave wrap the handler within a function that checks for its DOM position
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// this prevents the handler from being dispatched the same way as mouseover or mouseout does
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if (originalTypeEvent in customEvents) {
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const wrapFunction = fn => {
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return function (event) {
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if (!event.relatedTarget || event.relatedTarget !== event.delegateTarget && !event.delegateTarget.contains(event.relatedTarget)) {
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return fn.call(this, event);
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}
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};
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};
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callable = wrapFunction(callable);
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}
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const events = getElementEvents(element);
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const handlers = events[typeEvent] || (events[typeEvent] = {});
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const previousFunction = findHandler(handlers, callable, isDelegated ? handler : null);
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if (previousFunction) {
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previousFunction.oneOff = previousFunction.oneOff && oneOff;
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return;
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}
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const uid = makeEventUid(callable, originalTypeEvent.replace(namespaceRegex, ''));
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const fn = isDelegated ? bootstrapDelegationHandler(element, handler, callable) : bootstrapHandler(element, callable);
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fn.delegationSelector = isDelegated ? handler : null;
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fn.callable = callable;
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fn.oneOff = oneOff;
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fn.uidEvent = uid;
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handlers[uid] = fn;
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element.addEventListener(typeEvent, fn, isDelegated);
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}
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function removeHandler(element, events, typeEvent, handler, delegationSelector) {
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const fn = findHandler(events[typeEvent], handler, delegationSelector);
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if (!fn) {
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return;
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}
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element.removeEventListener(typeEvent, fn, Boolean(delegationSelector));
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delete events[typeEvent][fn.uidEvent];
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}
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function removeNamespacedHandlers(element, events, typeEvent, namespace) {
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const storeElementEvent = events[typeEvent] || {};
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for (const handlerKey of Object.keys(storeElementEvent)) {
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if (handlerKey.includes(namespace)) {
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const event = storeElementEvent[handlerKey];
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removeHandler(element, events, typeEvent, event.callable, event.delegationSelector);
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}
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}
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}
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function getTypeEvent(event) {
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// allow to get the native events from namespaced events ('click.bs.button' --> 'click')
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event = event.replace(stripNameRegex, '');
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return customEvents[event] || event;
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}
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const EventHandler = {
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on(element, event, handler, delegationFunction) {
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addHandler(element, event, handler, delegationFunction, false);
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},
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one(element, event, handler, delegationFunction) {
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addHandler(element, event, handler, delegationFunction, true);
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},
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off(element, originalTypeEvent, handler, delegationFunction) {
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if (typeof originalTypeEvent !== 'string' || !element) {
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return;
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}
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const [isDelegated, callable, typeEvent] = normalizeParameters(originalTypeEvent, handler, delegationFunction);
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const inNamespace = typeEvent !== originalTypeEvent;
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const events = getElementEvents(element);
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const storeElementEvent = events[typeEvent] || {};
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const isNamespace = originalTypeEvent.startsWith('.');
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if (typeof callable !== 'undefined') {
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// Simplest case: handler is passed, remove that listener ONLY.
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if (!Object.keys(storeElementEvent).length) {
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return;
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}
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removeHandler(element, events, typeEvent, callable, isDelegated ? handler : null);
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return;
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}
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if (isNamespace) {
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for (const elementEvent of Object.keys(events)) {
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removeNamespacedHandlers(element, events, elementEvent, originalTypeEvent.slice(1));
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}
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}
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for (const keyHandlers of Object.keys(storeElementEvent)) {
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const handlerKey = keyHandlers.replace(stripUidRegex, '');
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if (!inNamespace || originalTypeEvent.includes(handlerKey)) {
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const event = storeElementEvent[keyHandlers];
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removeHandler(element, events, typeEvent, event.callable, event.delegationSelector);
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}
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}
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},
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trigger(element, event, args) {
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if (typeof event !== 'string' || !element) {
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return null;
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}
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const $ = index.getjQuery();
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const typeEvent = getTypeEvent(event);
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const inNamespace = event !== typeEvent;
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let jQueryEvent = null;
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let bubbles = true;
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let nativeDispatch = true;
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let defaultPrevented = false;
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if (inNamespace && $) {
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jQueryEvent = $.Event(event, args);
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$(element).trigger(jQueryEvent);
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bubbles = !jQueryEvent.isPropagationStopped();
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nativeDispatch = !jQueryEvent.isImmediatePropagationStopped();
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defaultPrevented = jQueryEvent.isDefaultPrevented();
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}
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let evt = new Event(event, {
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bubbles,
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cancelable: true
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});
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evt = hydrateObj(evt, args);
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if (defaultPrevented) {
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evt.preventDefault();
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}
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if (nativeDispatch) {
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element.dispatchEvent(evt);
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}
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if (evt.defaultPrevented && jQueryEvent) {
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jQueryEvent.preventDefault();
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}
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return evt;
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}
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};
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function hydrateObj(obj, meta) {
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for (const [key, value] of Object.entries(meta || {})) {
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try {
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obj[key] = value;
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} catch (_unused) {
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Object.defineProperty(obj, key, {
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configurable: true,
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get() {
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return value;
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}
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});
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}
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}
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return obj;
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}
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return EventHandler;
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}));
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//# sourceMappingURL=event-handler.js.map
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