79 lines
3.5 KiB
JavaScript
79 lines
3.5 KiB
JavaScript
'use client';
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import * as React from 'react';
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import { useEventCallback, isHTMLElement } from '@fluentui/react-utilities';
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import { POSITIONING_SLIDE_DIRECTION_VAR_X, POSITIONING_SLIDE_DIRECTION_VAR_Y } from './constants';
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/**
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* Returns the slide direction unit vectors for a given Floating UI placement.
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* Values are -1, 0, or 1, representing the direction the element slides in from.
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*/ export function getPlacementSlideDirections(placement) {
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const side = placement.split('-')[0];
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// Default to sliding down from the top side
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let x = 0;
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let y = 1;
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if (side === 'right') {
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x = -1;
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y = 0;
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} else if (side === 'bottom') {
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x = 0;
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y = -1;
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} else if (side === 'left') {
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x = 1;
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y = 0;
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}
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return {
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x,
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y
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};
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}
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/**
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* A hook that manages CSS custom properties for slide direction based on positioning placement.
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*
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* It wraps the `onPositioningEnd` callback to set `--fui-positioning-slide-direction-x` and
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* `--fui-positioning-slide-direction-y` CSS custom properties on the positioned element,
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* and registers them via `CSS.registerProperty` to avoid properties propagation down to a DOM tree.
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*
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* @returns The wrapped `onPositioningEnd` handler to pass to the positioning config.
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*/ export function usePositioningSlideDirection(options) {
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const { targetDocument, onPositioningEnd } = options;
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const handlePositionEnd = useEventCallback((e)=>{
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onPositioningEnd === null || onPositioningEnd === void 0 ? void 0 : onPositioningEnd(e);
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const element = e.target;
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const placement = e.detail.placement;
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if (!isHTMLElement(element)) {
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return;
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}
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const { x, y } = getPlacementSlideDirections(placement);
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element.style.setProperty(POSITIONING_SLIDE_DIRECTION_VAR_X, `${x}px`);
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element.style.setProperty(POSITIONING_SLIDE_DIRECTION_VAR_Y, `${y}px`);
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});
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// Register the CSS custom properties so they can be interpolated during animations.
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// CSS.registerProperty is idempotent — the try/catch handles the case where
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// properties are already registered.
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React.useEffect(()=>{
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var _targetDocument_defaultView_CSS, _targetDocument_defaultView;
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var _targetDocument_defaultView_CSS_registerProperty;
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const registerProperty = (_targetDocument_defaultView_CSS_registerProperty = targetDocument === null || targetDocument === void 0 ? void 0 : (_targetDocument_defaultView = targetDocument.defaultView) === null || _targetDocument_defaultView === void 0 ? void 0 : (_targetDocument_defaultView_CSS = _targetDocument_defaultView.CSS) === null || _targetDocument_defaultView_CSS === void 0 ? void 0 : _targetDocument_defaultView_CSS.registerProperty) !== null && _targetDocument_defaultView_CSS_registerProperty !== void 0 ? _targetDocument_defaultView_CSS_registerProperty : ()=>{
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// No-op if registerProperty is not supported
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};
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try {
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registerProperty({
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name: POSITIONING_SLIDE_DIRECTION_VAR_X,
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syntax: '<length>',
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inherits: false,
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initialValue: '0px'
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});
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registerProperty({
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name: POSITIONING_SLIDE_DIRECTION_VAR_Y,
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syntax: '<length>',
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inherits: false,
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initialValue: '0px'
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});
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} catch (e) {
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// Ignore errors from registerProperty, which can occur if the properties are already registered
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}
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}, [
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targetDocument
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]);
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return handlePositionEnd;
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}
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