bc518174
 王天杨
提交两个项目文件
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// @flow strict
import * as React from 'react';
import {
type State,
type Placement,
type PositioningStrategy,
type VirtualElement,
type StrictModifiers,
type Modifier,
} from '@popperjs/core/lib';
import { ManagerReferenceNodeContext } from './Manager';
import type { Ref } from './RefTypes';
import { unwrapArray, setRef } from './utils';
import { usePopper } from './usePopper';
type ReferenceElement = ?(VirtualElement | HTMLElement);
type Modifiers = Array<StrictModifiers | $Shape<Modifier<string, {}>>>;
export type PopperArrowProps = {|
ref: Ref,
style: CSSStyleDeclaration,
|};
export type PopperChildrenProps = {|
ref: Ref,
style: CSSStyleDeclaration,
placement: Placement,
isReferenceHidden: ?boolean,
hasPopperEscaped: ?boolean,
update: () => Promise<null | $Shape<State>>,
forceUpdate: () => void,
arrowProps: PopperArrowProps,
|};
export type PopperChildren = (PopperChildrenProps) => React.Node;
export type PopperProps = $ReadOnly<{|
children: PopperChildren,
innerRef?: Ref,
modifiers?: Modifiers,
placement?: Placement,
strategy?: PositioningStrategy,
referenceElement?: ReferenceElement,
onFirstUpdate?: ($Shape<State>) => void,
|}>;
const NOOP = () => void 0;
const NOOP_PROMISE = () => Promise.resolve(null);
const EMPTY_MODIFIERS = [];
export function Popper({
placement = 'bottom',
strategy = 'absolute',
modifiers = EMPTY_MODIFIERS,
referenceElement,
onFirstUpdate,
innerRef,
children,
}: PopperProps): React.Node {
const referenceNode = React.useContext(ManagerReferenceNodeContext);
const [popperElement, setPopperElement] = React.useState(null);
const [arrowElement, setArrowElement] = React.useState(null);
React.useEffect(() => {
setRef(innerRef, popperElement)
}, [innerRef, popperElement]);
const options = React.useMemo(
() => ({
placement,
strategy,
onFirstUpdate,
modifiers: [
...modifiers,
{
name: 'arrow',
enabled: arrowElement != null,
options: { element: arrowElement },
},
],
}),
[placement, strategy, onFirstUpdate, modifiers, arrowElement]
);
const { state, styles, forceUpdate, update } = usePopper(
referenceElement || referenceNode,
popperElement,
options
);
const childrenProps = React.useMemo(
() => ({
ref: setPopperElement,
style: styles.popper,
placement: state ? state.placement : placement,
hasPopperEscaped:
state && state.modifiersData.hide
? state.modifiersData.hide.hasPopperEscaped
: null,
isReferenceHidden:
state && state.modifiersData.hide
? state.modifiersData.hide.isReferenceHidden
: null,
arrowProps: {
style: styles.arrow,
ref: setArrowElement,
},
forceUpdate: forceUpdate || NOOP,
update: update || NOOP_PROMISE,
}),
[
setPopperElement,
setArrowElement,
placement,
state,
styles,
update,
forceUpdate,
]
);
return unwrapArray(children)(childrenProps);
}
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