388 lines
11 KiB
TypeScript
388 lines
11 KiB
TypeScript
// Copyright 2021 Signal Messenger, LLC
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// SPDX-License-Identifier: AGPL-3.0-only
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import type { ReactElement, ReactNode } from 'react';
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import React, { useEffect, useRef, useState } from 'react';
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import classNames from 'classnames';
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import { noop } from 'lodash';
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import { animated } from '@react-spring/web';
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import { v4 as uuid } from 'uuid';
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import type { LocalizerType } from '../types/Util';
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import { ModalHost } from './ModalHost';
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import type { Theme } from '../util/theme';
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import { assertDev } from '../util/assert';
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import { getClassNamesFor } from '../util/getClassNamesFor';
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import { useAnimated } from '../hooks/useAnimated';
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import { useHasWrapped } from '../hooks/useHasWrapped';
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import * as log from '../logging/log';
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import {
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isOverflowing,
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isScrolled,
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isScrolledToBottom,
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useScrollObserver,
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} from '../hooks/useSizeObserver';
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type PropsType = {
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children: ReactNode;
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modalName: string;
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hasXButton?: boolean;
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hasHeaderDivider?: boolean;
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hasFooterDivider?: boolean;
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i18n: LocalizerType;
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modalFooter?: JSX.Element;
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modalHeaderChildren?: ReactNode;
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moduleClassName?: string;
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onBackButtonClick?: () => unknown;
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onClose?: () => void;
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title?: ReactNode;
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useFocusTrap?: boolean;
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padded?: boolean;
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['aria-describedby']?: string;
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};
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export type ModalPropsType = PropsType & {
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noTransform?: boolean;
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noEscapeClose?: boolean;
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noMouseClose?: boolean;
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theme?: Theme;
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};
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const BASE_CLASS_NAME = 'module-Modal';
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export function Modal({
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children,
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modalName,
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hasXButton,
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i18n,
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modalFooter,
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modalHeaderChildren,
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moduleClassName,
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noEscapeClose,
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noMouseClose,
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onBackButtonClick,
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onClose = noop,
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theme,
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title,
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useFocusTrap,
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hasHeaderDivider = false,
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hasFooterDivider = false,
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noTransform = false,
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padded = true,
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'aria-describedby': ariaDescribedBy,
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}: Readonly<ModalPropsType>): JSX.Element | null {
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const { close, isClosed, modalStyles, overlayStyles } = useAnimated(
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onClose,
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// `background-position: fixed` cannot properly detect the viewport when
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// the parent element has `transform: translate*`. Even though it requires
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// layout recalculation - use `margin-top` if asked by the embedder.
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noTransform
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? {
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getFrom: () => ({ opacity: 0, marginTop: '48px' }),
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getTo: isOpen =>
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isOpen
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? { opacity: 1, marginTop: '0px' }
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: { opacity: 0, marginTop: '48px' },
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}
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: {
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getFrom: () => ({ opacity: 0, transform: 'translateY(48px)' }),
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getTo: isOpen =>
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isOpen
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? { opacity: 1, transform: 'translateY(0px)' }
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: { opacity: 0, transform: 'translateY(48px)' },
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}
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);
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useEffect(() => {
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if (!isClosed) {
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return noop;
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}
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const timer = setTimeout(() => {
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log.error(`Modal ${modalName} is closed, but still visible`);
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assertDev(false, `Invisible modal ${modalName}`);
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}, 0);
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return () => {
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clearTimeout(timer);
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};
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}, [modalName, isClosed]);
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if (isClosed) {
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return null;
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}
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return (
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<ModalHost
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modalName={modalName}
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moduleClassName={moduleClassName}
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noEscapeClose={noEscapeClose}
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noMouseClose={noMouseClose}
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onClose={close}
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onEscape={onBackButtonClick}
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overlayStyles={overlayStyles}
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theme={theme}
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useFocusTrap={useFocusTrap}
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>
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<animated.div style={modalStyles}>
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<ModalPage
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modalName={modalName}
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hasXButton={hasXButton}
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i18n={i18n}
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modalFooter={modalFooter}
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modalHeaderChildren={modalHeaderChildren}
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moduleClassName={moduleClassName}
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onBackButtonClick={onBackButtonClick}
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onClose={close}
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title={title}
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padded={padded}
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hasHeaderDivider={hasHeaderDivider}
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hasFooterDivider={hasFooterDivider}
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aria-describedby={ariaDescribedBy}
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>
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{children}
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</ModalPage>
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</animated.div>
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</ModalHost>
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);
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}
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type ModalPageProps = Readonly<{
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// should be the one provided by PagedModal
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onClose: () => void;
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}> &
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Omit<Readonly<PropsType>, 'onClose'>;
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/**
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* Represents a single instance (or page) of a modal window.
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*
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* It should not be used by itself, either wrap it with PagedModal,
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* render it in a component that has PagedModal as an ancestor, or
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* use Modal instead.
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*
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* It does not provide open/close animation.
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*
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* NOTE: When used in conjunction with PagedModal (almost always the case):
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* onClose" handler should be the one provided by the parent PagedModal,
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* not one that has any logic. If you have some logic to execute when the
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* modal closes, pass it to PagedModal.
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*/
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export function ModalPage({
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children,
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hasXButton,
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i18n,
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modalFooter,
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modalHeaderChildren,
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modalName,
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moduleClassName,
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onBackButtonClick,
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onClose,
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title,
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padded = true,
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hasHeaderDivider = false,
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hasFooterDivider = false,
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'aria-describedby': ariaDescribedBy,
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}: ModalPageProps): JSX.Element {
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const modalRef = useRef<HTMLDivElement | null>(null);
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const bodyRef = useRef<HTMLDivElement>(null);
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const bodyInnerRef = useRef<HTMLDivElement>(null);
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const [scrolled, setScrolled] = useState(false);
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const [scrolledToBottom, setScrolledToBottom] = useState(false);
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const [hasOverflow, setHasOverflow] = useState(false);
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const hasHeader = Boolean(
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hasXButton || title || modalHeaderChildren || onBackButtonClick
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);
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const getClassName = getClassNamesFor(BASE_CLASS_NAME, moduleClassName);
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const [id] = useState(() => uuid());
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useScrollObserver(bodyRef, bodyInnerRef, scroll => {
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setScrolled(isScrolled(scroll));
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setScrolledToBottom(isScrolledToBottom(scroll));
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setHasOverflow(isOverflowing(scroll));
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});
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return (
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<>
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{/* We don't want the click event to propagate to its container node. */}
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{/* eslint-disable-next-line max-len */}
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{/* eslint-disable-next-line jsx-a11y/click-events-have-key-events, jsx-a11y/no-noninteractive-element-interactions */}
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<div
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className={classNames(
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getClassName(''),
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getClassName(hasHeader ? '--has-header' : '--no-header'),
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Boolean(modalFooter) && getClassName('--has-footer'),
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padded && getClassName('--padded'),
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hasHeaderDivider && getClassName('--header-divider'),
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hasFooterDivider && getClassName('--footer-divider')
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)}
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ref={modalRef}
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role="dialog"
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tabIndex={-1}
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aria-labelledby={title ? `${id}-title` : undefined}
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aria-describedby={ariaDescribedBy}
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data-testid={modalName}
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onClick={event => {
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event.stopPropagation();
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}}
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>
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{hasHeader && (
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<div
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className={classNames(
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getClassName('__header'),
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onBackButtonClick
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? getClassName('__header--with-back-button')
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: null
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)}
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>
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<div className={getClassName('__headerTitle')}>
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{onBackButtonClick && (
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<button
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aria-label={i18n('icu:back')}
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className={getClassName('__back-button')}
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onClick={onBackButtonClick}
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tabIndex={0}
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type="button"
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/>
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)}
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{title && (
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<h1
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id={`${id}-title`}
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className={classNames(
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getClassName('__title'),
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hasXButton ? getClassName('__title--with-x-button') : null
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)}
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>
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{title}
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</h1>
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)}
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{hasXButton && !title && (
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<div className={getClassName('__title')} />
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)}
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{hasXButton && (
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<button
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aria-label={i18n('icu:close')}
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className={getClassName('__close-button')}
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onClick={onClose}
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tabIndex={0}
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type="button"
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/>
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)}
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</div>
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{modalHeaderChildren}
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</div>
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)}
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<div
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className={classNames(
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getClassName('__body'),
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scrolled ? getClassName('__body--scrolled') : null,
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scrolledToBottom ? getClassName('__body--scrolledToBottom') : null,
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hasOverflow || scrolled ? getClassName('__body--overflow') : null
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)}
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ref={bodyRef}
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>
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<div ref={bodyInnerRef} className={getClassName('__body_inner')}>
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{children}
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</div>
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</div>
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{modalFooter && <Modal.ButtonFooter>{modalFooter}</Modal.ButtonFooter>}
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</div>
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</>
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);
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}
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function ButtonFooter({
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children,
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}: Readonly<{
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children: ReactNode;
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}>): ReactElement {
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const [ref, hasWrapped] = useHasWrapped<HTMLDivElement>();
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const className = getClassNamesFor(BASE_CLASS_NAME)('__button-footer');
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return (
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<div
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className={classNames(
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className,
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hasWrapped ? `${className}--one-button-per-line` : undefined
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)}
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ref={ref}
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>
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{children}
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</div>
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);
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}
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Modal.ButtonFooter = ButtonFooter;
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type PagedModalProps = Readonly<{
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modalName: string;
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children: RenderModalPage;
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moduleClassName?: string;
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onClose?: () => void;
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useFocusTrap?: boolean;
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noMouseClose?: boolean;
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theme?: Theme;
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}>;
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/**
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* Provides modal animation and click to close functionality to a
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* ModalPage descendant.
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*
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* Useful when we want to swap between different ModalPages (possibly
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* rendered by different components) without triggering an open/close
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* transition animation.
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*/
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export function PagedModal({
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modalName,
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children,
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moduleClassName,
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noMouseClose,
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onClose = noop,
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theme,
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useFocusTrap,
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}: PagedModalProps): JSX.Element | null {
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const { close, isClosed, modalStyles, overlayStyles } = useAnimated(onClose, {
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getFrom: () => ({ opacity: 0, transform: 'translateY(48px)' }),
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getTo: isOpen =>
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isOpen
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? { opacity: 1, transform: 'translateY(0px)' }
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: { opacity: 0, transform: 'translateY(48px)' },
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});
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useEffect(() => {
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if (!isClosed) {
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return noop;
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}
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const timer = setTimeout(() => {
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log.error(`PagedModal ${modalName} is closed, but still visible`);
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assertDev(false, `Invisible paged modal ${modalName}`);
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}, 0);
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return () => {
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clearTimeout(timer);
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};
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}, [modalName, isClosed]);
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if (isClosed) {
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return null;
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}
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return (
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<ModalHost
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modalName={modalName}
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moduleClassName={moduleClassName}
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noMouseClose={noMouseClose}
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onClose={close}
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overlayStyles={overlayStyles}
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theme={theme}
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useFocusTrap={useFocusTrap}
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>
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<animated.div style={modalStyles}>{children(close)}</animated.div>
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</ModalHost>
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);
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}
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export type RenderModalPage = (onClose: () => void) => JSX.Element;
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