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96 lines
3.3 KiB
Plaintext
96 lines
3.3 KiB
Plaintext
/*
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* Copyright 2022 Adobe. All rights reserved.
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* This file is licensed to you under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License. You may obtain a copy
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* of the License at http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software distributed under
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* the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR REPRESENTATIONS
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* OF ANY KIND, either express or implied. See the License for the specific language
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* governing permissions and limitations under the License.
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*/
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import {ClearPressResponder} from '@react-aria/interactions';
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import {FocusScope} from '@react-aria/focus';
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import React, {ReactNode, useContext, useMemo, useState} from 'react';
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import ReactDOM from 'react-dom';
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import {useIsSSR} from '@react-aria/ssr';
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import {useLayoutEffect} from '@react-aria/utils';
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import {useUNSAFE_PortalContext} from './PortalProvider';
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export interface OverlayProps {
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/**
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* The container element in which the overlay portal will be placed.
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* @default document.body
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*/
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portalContainer?: Element,
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/** The overlay to render in the portal. */
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children: ReactNode,
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/**
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* Disables default focus management for the overlay, including containment and restoration.
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* This option should be used very carefully. When focus management is disabled, you must
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* implement focus containment and restoration to ensure the overlay is keyboard accessible.
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*/
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disableFocusManagement?: boolean,
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/**
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* Whether to contain focus within the overlay.
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*/
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shouldContainFocus?: boolean,
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/**
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* Whether the overlay is currently performing an exit animation. When true,
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* focus is allowed to move outside.
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*/
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isExiting?: boolean
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}
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export const OverlayContext: React.Context<{contain: boolean, setContain: React.Dispatch<React.SetStateAction<boolean>>} | null> =
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React.createContext<{contain: boolean, setContain: React.Dispatch<React.SetStateAction<boolean>>} | null>(null);
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/**
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* A container which renders an overlay such as a popover or modal in a portal,
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* and provides a focus scope for the child elements.
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*/
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export function Overlay(props: OverlayProps): React.ReactPortal | null {
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let isSSR = useIsSSR();
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let {portalContainer = isSSR ? null : document.body, isExiting} = props;
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let [contain, setContain] = useState(false);
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let contextValue = useMemo(() => ({contain, setContain}), [contain, setContain]);
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let {getContainer} = useUNSAFE_PortalContext();
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if (!props.portalContainer && getContainer) {
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portalContainer = getContainer();
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}
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if (!portalContainer) {
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return null;
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}
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let contents = props.children;
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if (!props.disableFocusManagement) {
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contents = (
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<FocusScope restoreFocus contain={(props.shouldContainFocus || contain) && !isExiting}>
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{contents}
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</FocusScope>
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);
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}
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contents = (
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<OverlayContext.Provider value={contextValue}>
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<ClearPressResponder>
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{contents}
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</ClearPressResponder>
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</OverlayContext.Provider>
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);
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return ReactDOM.createPortal(contents, portalContainer);
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}
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/** @private */
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export function useOverlayFocusContain(): void {
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let ctx = useContext(OverlayContext);
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let setContain = ctx?.setContain;
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useLayoutEffect(() => {
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setContain?.(true);
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}, [setContain]);
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}
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