76 lines
2 KiB
JavaScript
76 lines
2 KiB
JavaScript
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/*
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* Modal
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*
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* Pico.css - https://picocss.com
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* Copyright 2019-2024 - Licensed under MIT
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*/
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// Config
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const isOpenClass = "modal-is-open";
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const openingClass = "modal-is-opening";
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const closingClass = "modal-is-closing";
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const scrollbarWidthCssVar = "--pico-scrollbar-width";
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const animationDuration = 400; // ms
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let visibleModal = null;
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// Toggle modal
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const toggleModal = (event) => {
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event.preventDefault();
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const modal = document.getElementById(event.currentTarget.dataset.target);
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if (!modal) return;
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modal && (modal.open ? closeModal(modal) : openModal(modal));
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};
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// Open modal
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const openModal = (modal) => {
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const { documentElement: html } = document;
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const scrollbarWidth = getScrollbarWidth();
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if (scrollbarWidth) {
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html.style.setProperty(scrollbarWidthCssVar, `${scrollbarWidth}px`);
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}
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html.classList.add(isOpenClass, openingClass);
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setTimeout(() => {
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visibleModal = modal;
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html.classList.remove(openingClass);
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}, animationDuration);
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modal.showModal();
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};
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// Close modal
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const closeModal = (modal) => {
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visibleModal = null;
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const { documentElement: html } = document;
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html.classList.add(closingClass);
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setTimeout(() => {
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html.classList.remove(closingClass, isOpenClass);
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html.style.removeProperty(scrollbarWidthCssVar);
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modal.close();
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}, animationDuration);
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};
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// Close with a click outside
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document.addEventListener("click", (event) => {
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if (visibleModal === null) return;
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const modalContent = visibleModal.querySelector("article");
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const isClickInside = modalContent.contains(event.target);
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!isClickInside && closeModal(visibleModal);
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});
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// Close with Esc key
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document.addEventListener("keydown", (event) => {
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if (event.key === "Escape" && visibleModal) {
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closeModal(visibleModal);
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}
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});
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// Get scrollbar width
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const getScrollbarWidth = () => {
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const scrollbarWidth = window.innerWidth - document.documentElement.clientWidth;
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return scrollbarWidth;
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};
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// Is scrollbar visible
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const isScrollbarVisible = () => {
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return document.body.scrollHeight > screen.height;
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};
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