@gemeentenijmegen/web-components
Version:
Web components for the gemeente Nijmegen design system
139 lines (111 loc) • 16.4 kB
JavaScript
(function () {
'use strict';
function styleInject(css, ref) {
if ( ref === void 0 ) ref = {};
var insertAt = ref.insertAt;
if (!css || typeof document === 'undefined') { return; }
var head = document.head || document.getElementsByTagName('head')[0];
var style = document.createElement('style');
style.type = 'text/css';
if (insertAt === 'top') {
if (head.firstChild) {
head.insertBefore(style, head.firstChild);
} else {
head.appendChild(style);
}
} else {
head.appendChild(style);
}
if (style.styleSheet) {
style.styleSheet.cssText = css;
} else {
style.appendChild(document.createTextNode(css));
}
}
var css_248z = "/**\n * @license EUPL-1.2\n * Copyright (c) 2020-2024 Frameless B.V.\n * Copyright (c) 2021-2024 Gemeente Utrecht\n */\n/* stylelint-disable scss/no-global-function-names */\n/**\n * @license EUPL-1.2\n * Copyright (c) 2020-2024 Frameless B.V.\n * Copyright (c) 2021-2024 Gemeente Utrecht\n */\n/* stylelint-disable-next-line block-no-empty */\n/*\n\n# CSS implementation\n\n## `text-decoration-skip`\n\n`text-decoration-skip` can be helpful to avoid making some texts unreadable.\nFor example by obscuring Arabic diacritics.\n\nHowever, the combination of a greater thickness and skipping this thick underline\nleads to a very unappealing rendering of the underline. To avoid this,\n`text-decoration-skip` is disabled for interactive states.\n\nFor design token configurations that have identical thickness for normal and interactive\nstates, this will lead to the (undesirable) effect that the focus/hover effect is switching\nfrom an interrupted to an uninterrupted underline (for some texts).\n\nApart from making `skip-ink` configurable for normal/focus/hover, there is no good solution yet.\n\n---\n\nDisabling `text-decoration-skip` for interactive states obscures some texts, and we assume for now\nthat moving the pointer away from a link or having focus elsewhere first is simple enough to\nnot make this too inconvenient.\n\n---\n\nSome folks implement the underline of links using `border-bottom` or even using a finely crafted\n`linear-gradient()` with a solid color at the bottom and transparent behind the text. These approaches\nwould unfortunately not be able to provide the improved readability of `text-decoration-skip`.\n\n## `text-decoration-thickness`\n\nVarying `text-decoration-thickness` can be used to distinguish interactive states.\n\n---\n\n`text-decoration-thickness` appears to have rendering differences between Chrome and Safari.\nIn Safari the line becomes thicker with extra pixels added to the bottom, while in Chrome\nthe underline offset also seems to increase along with the thickness, which effectively means\nthe underline is closer to the next line than in Safari.\n\n---\n\nIt might be nice to use font-relative units for `text-decoration-thickness`, and that is why we\nuse the `max()` function to ensure the underline remains visible for every font size.\n\n## `transition`\n\n`text-decoration-thickness` could be a candidate for animating between interactive states,\nhowever browsers don't seem to have implemented great looking supixel tweening yet.\n\n`text-decoration-skip` also makes the transition more challenging to implement.\n\n*/\n/**\n * Simulate forced-colors mode.\n */\n/* stylelint-disable-next-line block-no-empty */\n/* stylelint-disable-next-line block-no-empty */\n/* stylelint-disable-next-line block-no-empty */\n/* stylelint-disable-next-line block-no-empty */\n/**\n * Link for elements such as `<img>` or `<article>`, that are not inline elements or plain text.\n * \n * Changing `display: inline` to `inline-block` ensures the focus outline is rendered around the entire box.\n */\n/**\n * @license EUPL-1.2\n * Copyright (c) 2020-2024 Frameless B.V.\n * Copyright (c) 2021-2024 Gemeente Utrecht\n */\n/* stylelint-disable-next-line block-no-empty */\n.nijmegen-mobile-menu {\n background-color: var(--nijmegen-menu-background-color);\n position: relative;\n}\n\n.nijmegen-mobile-menu__list {\n display: flex;\n flex-direction: column;\n line-height: var(--nijmegen-menu-link-line-height);\n list-style: none;\n padding-inline-start: 0;\n}\n\n.nijmegen-mobile-menu__link {\n background-color: var(--nijmegen-menu-background-color);\n box-sizing: border-box;\n color: var(--nijmegen-menu-link-color);\n cursor: pointer;\n display: flex;\n font-family: var(--nijmegen-menu-link-font-family);\n font-size: var(--nijmegen-menu-link-font-size);\n font-weight: var(--nijmegen-menu-link-font-weight);\n justify-content: space-between;\n padding-block-end: var(--nijmegen-menu-link-padding-block-end);\n padding-block-start: var(--nijmegen-menu-link-padding-block-start);\n padding-inline-end: var(--nijmegen-menu-link-padding-inline-end);\n padding-inline-start: var(--nijmegen-menu-link-padding-inline-start);\n position: relative;\n text-decoration: none;\n width: 100%; /* stylelint-disable-line property-disallowed-list */\n}\n.nijmegen-mobile-menu__link:is(button) {\n appearance: none;\n border: 0;\n}\n.nijmegen-mobile-menu__link:focus, .nijmegen-mobile-menu__link.nijmegen-mobile-menu__link--focus {\n --_utrecht-link-state-color: var(--utrecht-link-focus-color);\n background-color: var(--utrecht-link-focus-background-color, transparent);\n text-decoration-skip: none;\n text-decoration-skip-ink: none;\n}\n.nijmegen-mobile-menu__link:focus-visible, .nijmegen-mobile-menu__link.nijmegen-mobile-menu__link--focus-visible {\n --_utrecht-link-state-color: var(--utrecht-link-focus-color);\n background-color: var(--utrecht-link-focus-background-color, transparent);\n text-decoration-skip: none;\n text-decoration-skip-ink: none;\n /*\n * WCAG SC 2.4.12: Focus Not Obscured\n * Use `z-index` to ensure the focus ring is stacked above adjecent elements with a `background`\n */\n /* - The browser default focus ring should apply when these CSS custom properties are not set.\n * - Make the `box-shadow` value available, so components that have their own `box-shadow`\n * can combine it with the focus ring box shadow.\n */\n --_utrecht-focus-ring-box-shadow: 0 0 0 var(--utrecht-focus-outline-width, 0)\n var(--utrecht-focus-inverse-outline-color, transparent);\n box-shadow: var(--_utrecht-focus-ring-box-shadow);\n outline-color: var(--utrecht-focus-outline-color, revert);\n outline-offset: var(--utrecht-focus-outline-offset, revert);\n outline-style: var(--utrecht-focus-outline-style, revert);\n outline-width: var(--utrecht-focus-outline-width, revert);\n z-index: 1;\n /*\n * The following tokens are deprecated, but we keep them for backwards compatibility for now:\n * \n * `--utrecht-link-focus-text-decoration`\n * `--utrecht-link-focus-text-decoration-thickness`\n */\n --_utrecht-link-state-text-decoration: var(\n --utrecht-link-focus-visible-text-decoration,\n var(--utrecht-link-focus-text-decoration)\n );\n --_utrecht-link-state-text-decoration-thickness: var(\n --utrecht-link-focus-visible-text-decoration-thickness,\n var(--utrecht-link-focus-text-decoration-thickness)\n );\n z-index: var(--utrecht-stack-focus-z-index, 1);\n}\n.nijmegen-mobile-menu__link span {\n align-items: center;\n display: inline-flex;\n gap: var(--nijmegen-menu-link-column-gap);\n}\n.nijmegen-mobile-menu__link svg {\n stroke: currentColor;\n}\n.nijmegen-mobile-menu__link--small {\n font-size: var(--nijmegen-menu-link-small-font-size);\n padding-block-end: var(--nijmegen-menu-link-small-padding-block-end);\n padding-block-start: var(--nijmegen-menu-link-small-padding-block-start);\n padding-inline-end: var(--nijmegen-menu-link-small-padding-inline-end);\n padding-inline-start: var(--nijmegen-menu-link-small-padding-inline-start);\n}\n.nijmegen-mobile-menu__link--small span {\n gap: var(--nijmegen-menu-link-small-column-gap);\n}\n.nijmegen-mobile-menu__link--strong {\n font-weight: var(--nijmegen-menu-link-level-1-font-weight);\n}\n.nijmegen-mobile-menu__link--back {\n font-weight: var(--nijmegen-menu-link-level-1-font-weight);\n padding-block-end: var(--nijmegen-menu-button-padding-block-end);\n padding-block-start: var(--nijmegen-menu-button-padding-block-start);\n padding-inline-end: var(--nijmegen-menu-button-padding-inline-end);\n padding-inline-start: var(--nijmegen-menu-button-padding-inline-start);\n}\n.nijmegen-mobile-menu__link--back span::before {\n background-color: currentColor;\n content: \"\";\n display: inline-block;\n /* stylelint-disable-next-line property-disallowed-list */\n height: var(--nijmegen-header-item-icon-size, 1.5rem);\n mask-position: center;\n mask-repeat: no-repeat;\n mask-size: 100%;\n width: var(--nijmegen-header-item-icon-size, 1.5rem); /* stylelint-disable-line property-disallowed-list */\n mask-image: var(--nijmegen-header-item-open-icon-image, url('data:image/svg+xml,<svg xmlns=\"http://www.w3.org/2000/svg\" width=\"24\" height=\"24\" viewBox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2\" stroke-linecap=\"round\" stroke-linejoin=\"round\" class=\"icon icon-tabler icons-tabler-outline icon-tabler-chevron-left\"><path stroke=\"none\" d=\"M0 0h24v24H0z\" fill=\"none\"/><path d=\"M15 6l-6 6l6 6\" /></svg>'));\n}\n.nijmegen-mobile-menu__link--current {\n color: var(--nijmegen-menu-link-current-color);\n font-weight: var(--nijmegen-menu-link-current-font-weight, 600);\n}\n.nijmegen-mobile-menu__link--current::after {\n border-inline-start-color: var(--nijmegen-menu-link-current-border-color);\n border-inline-start-style: solid;\n border-inline-start-width: var(--nijmegen-menu-link-current-border-width, 4px);\n content: \"\";\n inset: 0;\n position: absolute;\n}\n.nijmegen-mobile-menu__link--expanded, .nijmegen-mobile-menu__link[aria-expanded=true] {\n background-color: var(--nijmegen-menu-link-expanded-background-color);\n color: var(--nijmegen-menu-link-expanded-color);\n font-weight: var(--nijmegen-menu-link-expanded-font-weight, 600);\n}\n.nijmegen-mobile-menu__link--expanded svg, .nijmegen-mobile-menu__link--expanded::after, .nijmegen-mobile-menu__link[aria-expanded=true] svg, .nijmegen-mobile-menu__link[aria-expanded=true]::after {\n transform: scaleY(-1);\n}\n.nijmegen-mobile-menu__link--chevron::after {\n background-color: currentColor;\n content: \"\";\n display: inline-block;\n /* stylelint-disable-next-line property-disallowed-list */\n height: var(--nijmegen-header-item-icon-size, 1.5rem);\n mask-position: center;\n mask-repeat: no-repeat;\n mask-size: 100%;\n width: var(--nijmegen-header-item-icon-size, 1.5rem); /* stylelint-disable-line property-disallowed-list */\n mask-image: var(--nijmegen-header-item-open-icon-image, url('data:image/svg+xml,<svg xmlns=\"http://www.w3.org/2000/svg\" width=\"24\" height=\"24\" viewBox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2\" stroke-linecap=\"round\" stroke-linejoin=\"round\" class=\"icon icon-tabler icons-tabler-outline icon-tabler-chevron-down\"><path stroke=\"none\" d=\"M0 0h24v24H0z\" fill=\"none\"/><path d=\"M6 9l6 6l6 -6\" /></svg>'));\n}\n.nijmegen-mobile-menu__link--arrow::after {\n background-color: currentColor;\n content: \"\";\n display: inline-block;\n /* stylelint-disable-next-line property-disallowed-list */\n height: var(--nijmegen-header-item-icon-size, 1.5rem);\n mask-position: center;\n mask-repeat: no-repeat;\n mask-size: 100%;\n width: var(--nijmegen-header-item-icon-size, 1.5rem); /* stylelint-disable-line property-disallowed-list */\n mask-image: var(--nijmegen-header-item-open-icon-image, url('data:image/svg+xml,<svg xmlns=\"http://www.w3.org/2000/svg\" width=\"24\" height=\"24\" viewBox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2\" stroke-linecap=\"round\" stroke-linejoin=\"round\" class=\"icon icon-tabler icons-tabler-outline icon-tabler-arrow-right\"><path stroke=\"none\" d=\"M0 0h24v24H0z\" fill=\"none\"/><path d=\"M5 12l14 0\" /><path d=\"M13 18l6 -6\" /><path d=\"M13 6l6 6\" /></svg>'));\n}\n\n.nijmegen-mobile-menu__details-content {\n display: none;\n}\n\n.nijmegen-mobile-menu__details .nijmegen-mobile-menu__list {\n display: none;\n}\n.nijmegen-mobile-menu__details--open .nijmegen-mobile-menu__list {\n display: block;\n}\n\n.nijmegen-mobile-menu__separator {\n padding-inline-end: var(--nijmegen-menu-link-padding-inline-end);\n padding-inline-start: var(--nijmegen-menu-link-padding-inline-start);\n}\n\n.nijmegen-mobile-menu__panel {\n background-color: var(--nijmegen-menu-background-color);\n display: none;\n flex-direction: column;\n gap: var(--nijmegen-menu-link-column-gap);\n inset: 0;\n min-height: 100%; /* stylelint-disable-line property-disallowed-list */\n position: absolute;\n width: 100%; /* stylelint-disable-line property-disallowed-list */\n z-index: 10;\n}\n.nijmegen-mobile-menu__panel--active {\n display: flex;\n}";
styleInject(css_248z);
var html = "<nav class=\"nijmegen-mobile-menu\">\n <slot></slot>\n</nav>\n";
class NijmegenMobileMenu extends HTMLElement {
constructor() {
super();
const template = document.createElement('template');
template.innerHTML = html;
const shadowRoot = this.attachShadow({ mode: 'open' });
shadowRoot.appendChild(template.content.cloneNode(true));
const stylesheet = new CSSStyleSheet();
stylesheet.replaceSync(css_248z);
shadowRoot.adoptedStyleSheets = [stylesheet];
}
connectedCallback() {
Array.from(this.children).forEach((child) => {
child.addEventListener('click', (event) => {
const expandableTarget = event.target.closest('[aria-expanded]');
if (expandableTarget && !expandableTarget.hasAttribute('data-panel')) {
this.#handleExpandableClick(expandableTarget);
return;
}
const panelTarget = event.target.closest('[data-panel]');
if (panelTarget) {
this.#handlePanelClick(panelTarget, false);
}
});
child.addEventListener('keydown', (event) => {
if (event.key === 'Enter' || event.key === ' ') {
const panelTarget = event.target.closest('[data-panel]');
if (panelTarget) {
event.preventDefault();
this.#handlePanelClick(panelTarget, true);
}
}
});
child.addEventListener('focusout', (event) => {
// Timeout is needed to allow the new focus to be set
setTimeout(() => {
this.#handleFocusOut(event.target);
}, 0);
});
});
}
#handleFocusOut(formerFocusedElement) {
const panel = formerFocusedElement.closest('.nijmegen-mobile-menu__panel');
if (!panel) return;
const currentFocusedElement = document.activeElement;
const inPanel = currentFocusedElement && panel.contains(currentFocusedElement);
if (!inPanel) {
this.#closeSubmenu(panel);
}
}
#closeSubmenu(panel) {
const li = panel.closest('li');
const button = li?.querySelector('[aria-expanded]');
if (button && button.ariaExpanded === 'true') {
button.ariaExpanded = 'false';
panel.classList.remove('nijmegen-mobile-menu__panel--active');
}
}
#handleExpandableClick(target) {
const isExpanded = target.ariaExpanded === 'true';
const parentElement = target.parentElement;
target.ariaExpanded = isExpanded ? 'false' : 'true';
parentElement.classList.toggle('nijmegen-mobile-menu__details--open', !isExpanded);
}
#handlePanelClick(target, isKeyboard) {
const li = target.closest('li');
const button = li?.querySelector('[aria-expanded]');
const panel = li?.querySelector('.nijmegen-mobile-menu__panel');
if (!button || !panel) return;
const isExpanded = button.ariaExpanded === 'true';
button.ariaExpanded = isExpanded ? 'false' : 'true';
panel.classList.toggle('nijmegen-mobile-menu__panel--active', !isExpanded);
if (isKeyboard) {
if (!isExpanded) {
const firstSubItem = panel.querySelector('a, button');
firstSubItem?.focus();
} else {
button.focus();
}
}
}
}
customElements.define('nijmegen-mobile-menu', NijmegenMobileMenu);
})();