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// @flow
import * as React from "react";
import cn from "classnames";
import Nav from "../Nav";
import Dropdown from "../Dropdown";
import type { subNavItem } from "./Nav.react";
import ClickOutside from "../../helpers/ClickOutside.react";
import { Manager, Reference } from "react-popper";
import type { Placement, ReferenceChildrenProps } from "react-popper";
type Props = {|
+children?: React.Node,
+className?: string,
+value?: string,
+LinkComponent?: React.ElementType,
+href?: string,
+to?: string,
+icon?: string,
+type?: "li" | "div",
/**
* Make this item behave like it has a subNav even if you dont use subItems or subItemsObjects
*/
+hasSubNav?: boolean,
+onClick?: () => void,
/**
* Display this item in an active, or currently viewing, state
*/
+active?: boolean,
+subItems?: React.ChildrenArray<React.Element<typeof Nav.SubItem>>,
+subItemsObjects?: Array<subNavItem>,
/**
* Position of the subnav Dropdown
*/
+position?: Placement,
/**
* Whether or not to pass "exact" property to underlying NavLink component
*/
+useExact?: boolean,
|};
type State = {
isOpen: boolean,
};
/**
* A NavItem with react-popper powered subIems Dropdowns
*/
class NavItem extends React.Component<Props, State> {
displayName = "Nav.Item";
state = {
isOpen: false,
};
_handleOnClick = (): void => {
if (this.props.hasSubNav) {
this.setState(s => ({ isOpen: !s.isOpen }));
}
if (this.props.onClick) this.props.onClick();
};
render(): React.Node {
const {
children,
LinkComponent,
value,
className,
to,
type = "li",
icon,
hasSubNav: forcedHasSubNav,
active,
subItems,
subItemsObjects,
useExact,
position = "bottom-start",
}: Props = this.props;
const hasSubNav = forcedHasSubNav || !!subItems || !!subItemsObjects;
const navLink =
(typeof children === "string" || value) && hasSubNav ? (
<Reference>
{({ ref }: ReferenceChildrenProps) => (
<Nav.Link
className={className}
to={to}
icon={icon}
RootComponent={LinkComponent}
hasSubNav={hasSubNav}
active={active}
rootRef={ref}
useExact={useExact}
>
{!hasSubNav && typeof children === "string" ? children : value}
</Nav.Link>
)}
</Reference>
) : (
<Nav.Link
className={className}
to={to}
icon={icon}
RootComponent={LinkComponent}
hasSubNav={hasSubNav}
active={active}
useExact={useExact}
>
{!hasSubNav && typeof children === "string" ? children : value}
</Nav.Link>
);
const childrenForAll = (
<React.Fragment>
{navLink}
{typeof children !== "string" && !hasSubNav && children}
{hasSubNav && (
<Dropdown.Menu arrow show={this.state.isOpen} position={position}>
{subItems ||
(subItemsObjects &&
subItemsObjects.map((a, i) => (
<Nav.SubItem
key={i}
value={a.value}
to={a.to}
icon={a.icon}
LinkComponent={a.LinkComponent}
useExact={a.useExact}
/>
))) ||
children}
</Dropdown.Menu>
)}
</React.Fragment>
);
const wrapperClasses = cn({
"nav-item": true,
show: this.state.isOpen,
});
const wrappedChildren =
type === "div" ? (
<ClickOutside onOutsideClick={() => this.setState({ isOpen: false })}>
{({ setElementRef }) => (
<div
className={wrapperClasses}
onClick={this._handleOnClick}
ref={setElementRef}
>
{childrenForAll}
</div>
)}
</ClickOutside>
) : (
<ClickOutside onOutsideClick={() => this.setState({ isOpen: false })}>
{({ setElementRef }) => (
<li
className={wrapperClasses}
onClick={this._handleOnClick}
ref={setElementRef}
>
{childrenForAll}
</li>
)}
</ClickOutside>
);
return hasSubNav ? <Manager>{wrappedChildren}</Manager> : wrappedChildren;
}
}
/** @component */
export default NavItem;
|