bootstrap-italia
Version:
Bootstrap Italia è un tema Bootstrap 5 per la creazione di applicazioni web nel pieno rispetto delle linee guida di design per i siti internet e i servizi digitali della PA
281 lines (220 loc) • 7.66 kB
JavaScript
/**
* --------------------------------------------------------------------------
* Bootstrap Italia (https://italia.github.io/bootstrap-italia/)
* Authors: https://github.com/italia/bootstrap-italia/blob/main/AUTHORS
* Licensed under BSD-3-Clause license (https://github.com/italia/bootstrap-italia/blob/main/LICENSE)
* This a fork of Bootstrap: Initial license and original file name below
* Bootstrap (v5.2.3): util/index.js
* Licensed under MIT (https://github.com/twbs/bootstrap/blob/main/LICENSE)
* --------------------------------------------------------------------------
*/
const MAX_UID = 1_000_000;
const MILLISECONDS_MULTIPLIER = 1000;
const TRANSITION_END = 'transitionend';
// Shout-out Angus Croll (https://goo.gl/pxwQGp)
const toType = (object) => {
if (object === null || object === undefined) {
return `${object}`
}
return Object.prototype.toString
.call(object)
.match(/\s([a-z]+)/i)[1]
.toLowerCase()
};
/**
* Public Util API
*/
const getUID = (prefix) => {
do {
prefix += Math.floor(Math.random() * MAX_UID);
} while (document.getElementById(prefix))
return prefix
};
const getSelector = (element) => {
let selector = element.getAttribute('data-bs-target');
if (!selector || selector === '#') {
let hrefAttribute = element.getAttribute('href');
// The only valid content that could double as a selector are IDs or classes,
// so everything starting with `#` or `.`. If a "real" URL is used as the selector,
// `document.querySelector` will rightfully complain it is invalid.
// See https://github.com/twbs/bootstrap/issues/32273
if (!hrefAttribute || (!hrefAttribute.includes('#') && !hrefAttribute.startsWith('.'))) {
return null
}
// Just in case some CMS puts out a full URL with the anchor appended
if (hrefAttribute.includes('#') && !hrefAttribute.startsWith('#')) {
hrefAttribute = `#${hrefAttribute.split('#')[1]}`;
}
selector = hrefAttribute && hrefAttribute !== '#' ? hrefAttribute.trim() : null;
}
return selector
};
const getSelectorFromElement = (element) => {
const selector = getSelector(element);
if (selector) {
return document.querySelector(selector) ? selector : null
}
return null
};
const getElementFromSelector = (element) => {
const selector = getSelector(element);
return selector ? document.querySelector(selector) : null
};
const getTransitionDurationFromElement = (element) => {
if (!element) {
return 0
}
// Get transition-duration of the element
let { transitionDuration, transitionDelay } = window.getComputedStyle(element);
const floatTransitionDuration = Number.parseFloat(transitionDuration);
const floatTransitionDelay = Number.parseFloat(transitionDelay);
// Return 0 if element or transition duration is not found
if (!floatTransitionDuration && !floatTransitionDelay) {
return 0
}
// If multiple durations are defined, take the first
transitionDuration = transitionDuration.split(',')[0];
transitionDelay = transitionDelay.split(',')[0];
return (Number.parseFloat(transitionDuration) + Number.parseFloat(transitionDelay)) * MILLISECONDS_MULTIPLIER
};
const triggerTransitionEnd = (element) => {
element.dispatchEvent(new Event(TRANSITION_END));
};
const isElement = (object) => {
if (!object || typeof object !== 'object') {
return false
}
return typeof object.nodeType !== 'undefined'
};
const getElement = (object) => {
if (isElement(object)) {
return object
}
if (typeof object === 'string' && object.length > 0) {
return document.querySelector(object)
}
return null
};
const isVisible = (element) => {
if (!isElement(element) || element.getClientRects().length === 0) {
return false
}
const elementIsVisible = getComputedStyle(element).getPropertyValue('visibility') === 'visible';
// Handle `details` element as its content may falsie appear visible when it is closed
const closedDetails = element.closest('details:not([open])');
if (!closedDetails) {
return elementIsVisible
}
if (closedDetails !== element) {
const summary = element.closest('summary');
if (summary && summary.parentNode !== closedDetails) {
return false
}
if (summary === null) {
return false
}
}
return elementIsVisible
};
const isDisabled = (element) => {
if (!element || element.nodeType !== Node.ELEMENT_NODE) {
return true
}
if (element.classList.contains('disabled')) {
return true
}
if (typeof element.disabled !== 'undefined') {
return element.disabled
}
return element.hasAttribute('disabled') && element.getAttribute('disabled') !== 'false'
};
const findShadowRoot = (element) => {
if (!document.documentElement.attachShadow) {
return null
}
// Can find the shadow root otherwise it'll return the document
if (typeof element.getRootNode === 'function') {
const root = element.getRootNode();
return root instanceof ShadowRoot ? root : null
}
if (element instanceof ShadowRoot) {
return element
}
// when we don't find a shadow root
if (!element.parentNode) {
return null
}
return findShadowRoot(element.parentNode)
};
const noop = () => {};
/**
* Trick to restart an element's animation
*
* @param {HTMLElement} element
* @return void
*
* @see https://www.charistheo.io/blog/2021/02/restart-a-css-animation-with-javascript/#restarting-a-css-animation
*/
const reflow = (element) => {
element.offsetHeight;
};
const isRTL = () => {
if (typeof window !== 'undefined' && typeof document !== 'undefined') {
return document.documentElement.dir === 'rtl'
} else {
return false
}
};
const execute = (callback) => {
if (typeof callback === 'function') {
callback();
}
};
const executeAfterTransition = (callback, transitionElement, waitForTransition = true) => {
if (!waitForTransition) {
execute(callback);
return
}
const durationPadding = 5;
const emulatedDuration = getTransitionDurationFromElement(transitionElement) + durationPadding;
let called = false;
const handler = ({ target }) => {
if (target !== transitionElement) {
return
}
called = true;
transitionElement.removeEventListener(TRANSITION_END, handler);
execute(callback);
};
transitionElement.addEventListener(TRANSITION_END, handler);
setTimeout(() => {
if (!called) {
triggerTransitionEnd(transitionElement);
}
}, emulatedDuration);
};
/**
* Return the previous/next element of a list.
*
* @param {array} list The list of elements
* @param activeElement The active element
* @param shouldGetNext Choose to get next or previous element
* @param isCycleAllowed
* @return {Element|elem} The proper element
*/
const getNextActiveElement = (list, activeElement, shouldGetNext, isCycleAllowed) => {
const listLength = list.length;
let index = list.indexOf(activeElement);
// if the element does not exist in the list return an element
// depending on the direction and if cycle is allowed
if (index === -1) {
return !shouldGetNext && isCycleAllowed ? list[listLength - 1] : list[0]
}
index += shouldGetNext ? 1 : -1;
if (isCycleAllowed) {
index = (index + listLength) % listLength;
}
return list[Math.max(0, Math.min(index, listLength - 1))]
};
export { execute, executeAfterTransition, findShadowRoot, getElement, getElementFromSelector, getNextActiveElement, getSelectorFromElement, getTransitionDurationFromElement, getUID, isDisabled, isElement, isRTL, isVisible, noop, reflow, toType, triggerTransitionEnd };
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