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Fixed #3802 - Improve folder structure for nuxt configurations
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114
components/lib/focustrap/FocusTrap.js
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114
components/lib/focustrap/FocusTrap.js
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import { DomHandler, ObjectUtils } from 'primevue/utils';
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function bind(el, binding) {
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const { onFocusIn, onFocusOut } = binding.value || {};
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el.$_pfocustrap_mutationobserver = new MutationObserver((mutationList) => {
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mutationList.forEach((mutation) => {
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if (mutation.type === 'childList' && !el.contains(document.activeElement)) {
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const findNextFocusableElement = (el) => {
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const focusableElement = DomHandler.isFocusableElement(el) ? el : DomHandler.getFirstFocusableElement(el);
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return ObjectUtils.isNotEmpty(focusableElement) ? focusableElement : findNextFocusableElement(el.nextSibling);
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};
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DomHandler.focus(findNextFocusableElement(mutation.nextSibling));
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}
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});
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});
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el.$_pfocustrap_mutationobserver.disconnect();
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el.$_pfocustrap_mutationobserver.observe(el, {
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childList: true
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});
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el.$_pfocustrap_focusinlistener = (event) => onFocusIn && onFocusIn(event);
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el.$_pfocustrap_focusoutlistener = (event) => onFocusOut && onFocusOut(event);
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el.addEventListener('focusin', el.$_pfocustrap_focusinlistener);
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el.addEventListener('focusout', el.$_pfocustrap_focusoutlistener);
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}
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function unbind(el) {
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el.$_pfocustrap_mutationobserver && el.$_pfocustrap_mutationobserver.disconnect();
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el.$_pfocustrap_focusinlistener && el.removeEventListener('focusin', el.$_pfocustrap_focusinlistener) && (el.$_pfocustrap_focusinlistener = null);
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el.$_pfocustrap_focusoutlistener && el.removeEventListener('focusout', el.$_pfocustrap_focusoutlistener) && (el.$_pfocustrap_focusoutlistener = null);
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}
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function autoFocus(el, binding) {
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const { autoFocusSelector = '', firstFocusableSelector = '', autoFocus = false } = binding.value || {};
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let focusableElement = DomHandler.getFirstFocusableElement(el, `[autofocus]:not(.p-hidden-focusable)${autoFocusSelector}`);
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autoFocus && !focusableElement && (focusableElement = DomHandler.getFirstFocusableElement(el, `:not(.p-hidden-focusable)${firstFocusableSelector}`));
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DomHandler.focus(focusableElement);
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}
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function onFirstHiddenElementFocus(event) {
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const { currentTarget, relatedTarget } = event;
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const focusableElement =
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relatedTarget === currentTarget.$_pfocustrap_lasthiddenfocusableelement
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? DomHandler.getFirstFocusableElement(currentTarget.parentElement, `:not(.p-hidden-focusable)${currentTarget.$_pfocustrap_focusableselector}`)
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: currentTarget.$_pfocustrap_lasthiddenfocusableelement;
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DomHandler.focus(focusableElement);
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}
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function onLastHiddenElementFocus(event) {
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const { currentTarget, relatedTarget } = event;
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const focusableElement =
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relatedTarget === currentTarget.$_pfocustrap_firsthiddenfocusableelement
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? DomHandler.getLastFocusableElement(currentTarget.parentElement, `:not(.p-hidden-focusable)${currentTarget.$_pfocustrap_focusableselector}`)
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: currentTarget.$_pfocustrap_firsthiddenfocusableelement;
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DomHandler.focus(focusableElement);
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}
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function createHiddenFocusableElements(el, binding) {
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const { tabIndex = 0, firstFocusableSelector = '', lastFocusableSelector = '' } = binding.value || {};
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const createFocusableElement = (onFocus) => {
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const element = document.createElement('span');
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element.classList = 'p-hidden-accessible p-hidden-focusable';
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element.tabIndex = tabIndex;
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element.setAttribute('aria-hidden', 'true');
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element.setAttribute('role', 'presentation');
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element.addEventListener('focus', onFocus);
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return element;
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};
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const firstFocusableElement = createFocusableElement(onFirstHiddenElementFocus);
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const lastFocusableElement = createFocusableElement(onLastHiddenElementFocus);
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firstFocusableElement.$_pfocustrap_lasthiddenfocusableelement = lastFocusableElement;
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firstFocusableElement.$_pfocustrap_focusableselector = firstFocusableSelector;
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lastFocusableElement.$_pfocustrap_firsthiddenfocusableelement = firstFocusableElement;
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lastFocusableElement.$_pfocustrap_focusableselector = lastFocusableSelector;
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el.prepend(firstFocusableElement);
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el.append(lastFocusableElement);
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}
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const FocusTrap = {
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mounted(el, binding) {
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const { disabled } = binding.value || {};
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if (!disabled) {
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createHiddenFocusableElements(el, binding);
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bind(el, binding);
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autoFocus(el, binding);
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}
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},
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updated(el, binding) {
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const { disabled } = binding.value || {};
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disabled && unbind(el);
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},
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unmounted(el) {
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unbind(el);
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}
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};
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export default FocusTrap;
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