@patternfly/react-core
Version:
This library provides a set of common React components for use with the PatternFly reference implementation.
126 lines • 6.48 kB
JavaScript
import { __rest } from "tslib";
import * as React from 'react';
import styles from '@patternfly/react-styles/css/components/Nav/nav';
import { css } from '@patternfly/react-styles';
import { NavContext } from './Nav';
import { PageSidebarContext } from '../Page/PageSidebar';
import { useOUIAProps } from '../../helpers';
import { Popper } from '../../helpers/Popper/Popper';
import AngleRightIcon from '@patternfly/react-icons/dist/esm/icons/angle-right-icon';
export const NavItem = (_a) => {
var { children, styleChildren = true, className, to, isActive = false, groupId = null, itemId = null, preventDefault = false, onClick = null, component = 'a', flyout, onShowFlyout, ouiaId, ouiaSafe } = _a, props = __rest(_a, ["children", "styleChildren", "className", "to", "isActive", "groupId", "itemId", "preventDefault", "onClick", "component", "flyout", "onShowFlyout", "ouiaId", "ouiaSafe"]);
const { flyoutRef, setFlyoutRef } = React.useContext(NavContext);
const { isNavOpen } = React.useContext(PageSidebarContext);
const [flyoutTarget, setFlyoutTarget] = React.useState(null);
const [isHovered, setIsHovered] = React.useState(false);
const ref = React.useRef();
const flyoutVisible = ref === flyoutRef;
const popperRef = React.useRef();
const Component = component;
const hasFlyout = flyout !== undefined;
const showFlyout = (show, override) => {
if ((!flyoutVisible || override) && show) {
setFlyoutRef(ref);
}
else if ((flyoutVisible || override) && !show) {
setFlyoutRef(null);
}
onShowFlyout && show && onShowFlyout();
};
const onMouseOver = (event) => {
const evtContainedInFlyout = event.target.closest('.pf-c-nav__item.pf-m-flyout');
if (hasFlyout && !flyoutVisible) {
showFlyout(true);
}
else if (flyoutRef !== null && !evtContainedInFlyout) {
setFlyoutRef(null);
}
};
const onFlyoutClick = (event) => {
const target = event.target;
const closestItem = target.closest('.pf-m-flyout');
if (!closestItem) {
if (hasFlyout) {
showFlyout(false, true);
}
else if (flyoutRef !== null) {
setFlyoutRef(null);
}
}
};
const handleFlyout = (event) => {
var _a, _b;
const key = event.key;
const target = event.target;
if (!(((_a = popperRef === null || popperRef === void 0 ? void 0 : popperRef.current) === null || _a === void 0 ? void 0 : _a.contains(target)) || (hasFlyout && ((_b = ref === null || ref === void 0 ? void 0 : ref.current) === null || _b === void 0 ? void 0 : _b.contains(target))))) {
return;
}
if (key === ' ' || key === 'ArrowRight') {
event.stopPropagation();
event.preventDefault();
if (!flyoutVisible) {
showFlyout(true);
setFlyoutTarget(target);
}
}
if (key === 'Escape' || key === 'ArrowLeft') {
if (flyoutVisible) {
event.stopPropagation();
event.preventDefault();
showFlyout(false);
}
}
};
React.useEffect(() => {
if (hasFlyout) {
window.addEventListener('click', onFlyoutClick);
}
return () => {
if (hasFlyout) {
window.removeEventListener('click', onFlyoutClick);
}
};
}, []);
React.useEffect(() => {
if (flyoutTarget) {
if (flyoutVisible) {
const flyoutItems = Array.from(popperRef.current.getElementsByTagName('UL')[0].children).filter(el => !(el.classList.contains('pf-m-disabled') || el.classList.contains('pf-c-divider')));
flyoutItems[0].firstChild.focus();
}
else {
flyoutTarget.focus();
}
}
}, [flyoutVisible, flyoutTarget]);
const flyoutButton = (React.createElement("span", { className: css(styles.navToggle) },
React.createElement("span", { className: css(styles.navToggleIcon) },
React.createElement(AngleRightIcon, { "aria-hidden": true }))));
const renderDefaultLink = (context) => {
const preventLinkDefault = preventDefault || !to;
return (React.createElement(Component, Object.assign({ href: to, onClick: (e) => context.onSelect(e, groupId, itemId, to, preventLinkDefault, onClick), className: css(styles.navLink, isActive && styles.modifiers.current, isHovered && styles.modifiers.hover, className), "aria-current": isActive ? 'page' : null, tabIndex: isNavOpen ? null : '-1' }, props),
children,
flyout && flyoutButton));
};
const renderClonedChild = (context, child) => React.cloneElement(child, Object.assign(Object.assign({ onClick: (e) => context.onSelect(e, groupId, itemId, to, preventDefault, onClick), 'aria-current': isActive ? 'page' : null }, (styleChildren && {
className: css(styles.navLink, isActive && styles.modifiers.current, child.props && child.props.className)
})), { tabIndex: child.props.tabIndex || isNavOpen ? null : -1, children: hasFlyout ? (React.createElement(React.Fragment, null,
child.props.children,
flyoutButton)) : (child.props.children) }));
const ouiaProps = useOUIAProps(NavItem.displayName, ouiaId, ouiaSafe);
const handleMouseEnter = () => {
setIsHovered(true);
};
const handleMouseLeave = () => {
setIsHovered(false);
};
const flyoutPopper = (React.createElement(Popper, { reference: ref, popper: React.createElement("div", { ref: popperRef, onMouseEnter: handleMouseEnter, onMouseLeave: handleMouseLeave }, flyout), placement: "right-start", isVisible: flyoutVisible, onDocumentKeyDown: handleFlyout }));
const navItem = (React.createElement(React.Fragment, null,
React.createElement("li", Object.assign({ onMouseOver: onMouseOver, className: css(styles.navItem, hasFlyout && styles.modifiers.flyout, className), ref: ref }, ouiaProps),
React.createElement(NavContext.Consumer, null, context => React.isValidElement(children)
? renderClonedChild(context, children)
: renderDefaultLink(context))),
flyout && flyoutPopper));
return navItem;
};
NavItem.displayName = 'NavItem';
//# sourceMappingURL=NavItem.js.map