695 lines
19 KiB
TypeScript
695 lines
19 KiB
TypeScript
// Copyright 2018-2021 Signal Messenger, LLC
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// SPDX-License-Identifier: AGPL-3.0-only
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import React, {
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ReactNode,
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useCallback,
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useEffect,
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useRef,
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useState,
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} from 'react';
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import classNames from 'classnames';
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import moment from 'moment';
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import { createPortal } from 'react-dom';
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import { noop } from 'lodash';
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import { useSpring, animated, to } from '@react-spring/web';
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import * as GoogleChrome from '../util/GoogleChrome';
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import { AttachmentType, isGIF } from '../types/Attachment';
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import { Avatar, AvatarSize } from './Avatar';
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import { ConversationType } from '../state/ducks/conversations';
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import { IMAGE_PNG, isImage, isVideo } from '../types/MIME';
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import { LocalizerType } from '../types/Util';
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import { MediaItemType, MessageAttributesType } from '../types/MediaItem';
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import { formatDuration } from '../util/formatDuration';
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import { useRestoreFocus } from '../hooks/useRestoreFocus';
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import * as log from '../logging/log';
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export type PropsType = {
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children?: ReactNode;
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close: () => void;
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getConversation?: (id: string) => ConversationType;
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i18n: LocalizerType;
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isViewOnce?: boolean;
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media: Array<MediaItemType>;
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onForward?: (messageId: string) => void;
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onSave?: (options: {
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attachment: AttachmentType;
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message: MessageAttributesType;
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index: number;
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}) => void;
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selectedIndex?: number;
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};
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const ZOOM_SCALE = 3;
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const INITIAL_IMAGE_TRANSFORM = {
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scale: 1,
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translateX: 0,
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translateY: 0,
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};
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export function Lightbox({
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children,
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close,
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getConversation,
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media,
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i18n,
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isViewOnce = false,
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onForward,
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onSave,
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selectedIndex: initialSelectedIndex = 0,
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}: PropsType): JSX.Element | null {
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const [root, setRoot] = React.useState<HTMLElement | undefined>();
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const [selectedIndex, setSelectedIndex] = useState<number>(
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initialSelectedIndex
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);
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const [videoElement, setVideoElement] = useState<HTMLVideoElement | null>(
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null
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);
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const [videoTime, setVideoTime] = useState<number | undefined>();
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const [isZoomed, setIsZoomed] = useState(false);
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const containerRef = useRef<HTMLDivElement | null>(null);
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const [focusRef] = useRestoreFocus();
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const animateRef = useRef<HTMLDivElement | null>(null);
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const dragCacheRef = useRef<
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| {
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startX: number;
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startY: number;
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translateX: number;
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translateY: number;
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}
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| undefined
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>();
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const imageRef = useRef<HTMLImageElement | null>(null);
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const zoomCacheRef = useRef<
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| {
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maxX: number;
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maxY: number;
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screenWidth: number;
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screenHeight: number;
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}
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| undefined
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>();
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const onPrevious = useCallback(
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(
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event: KeyboardEvent | React.MouseEvent<HTMLButtonElement, MouseEvent>
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) => {
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event.preventDefault();
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event.stopPropagation();
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if (isZoomed) {
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return;
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}
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setSelectedIndex(prevSelectedIndex => Math.max(prevSelectedIndex - 1, 0));
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},
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[isZoomed]
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);
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const onNext = useCallback(
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(
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event: KeyboardEvent | React.MouseEvent<HTMLButtonElement, MouseEvent>
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) => {
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event.preventDefault();
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event.stopPropagation();
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if (isZoomed) {
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return;
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}
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setSelectedIndex(prevSelectedIndex =>
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Math.min(prevSelectedIndex + 1, media.length - 1)
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);
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},
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[isZoomed, media]
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);
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const onTimeUpdate = useCallback(() => {
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if (!videoElement) {
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return;
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}
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setVideoTime(videoElement.currentTime);
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}, [setVideoTime, videoElement]);
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const handleSave = (
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event: React.MouseEvent<HTMLButtonElement, MouseEvent>
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) => {
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event.stopPropagation();
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event.preventDefault();
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const mediaItem = media[selectedIndex];
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const { attachment, message, index } = mediaItem;
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onSave?.({ attachment, message, index });
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};
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const handleForward = (
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event: React.MouseEvent<HTMLButtonElement, MouseEvent>
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) => {
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event.preventDefault();
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event.stopPropagation();
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close();
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const mediaItem = media[selectedIndex];
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onForward?.(mediaItem.message.id);
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};
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const onKeyDown = useCallback(
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(event: KeyboardEvent) => {
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switch (event.key) {
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case 'Escape': {
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close();
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event.preventDefault();
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event.stopPropagation();
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break;
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}
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case 'ArrowLeft':
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onPrevious(event);
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break;
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case 'ArrowRight':
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onNext(event);
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break;
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default:
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}
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},
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[close, onNext, onPrevious]
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);
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const onClose = (event: React.MouseEvent<HTMLElement>) => {
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event.stopPropagation();
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event.preventDefault();
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close();
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};
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const playVideo = useCallback(() => {
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if (!videoElement) {
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return;
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}
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if (videoElement.paused) {
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videoElement.play();
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} else {
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videoElement.pause();
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}
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}, [videoElement]);
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useEffect(() => {
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const div = document.createElement('div');
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document.body.appendChild(div);
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setRoot(div);
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return () => {
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document.body.removeChild(div);
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setRoot(undefined);
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};
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}, []);
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useEffect(() => {
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const useCapture = true;
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document.addEventListener('keydown', onKeyDown, useCapture);
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return () => {
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document.removeEventListener('keydown', onKeyDown, useCapture);
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};
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}, [onKeyDown]);
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const { attachment, contentType, loop = false, objectURL, message } =
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media[selectedIndex] || {};
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const isAttachmentGIF = isGIF(attachment ? [attachment] : undefined);
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useEffect(() => {
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playVideo();
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if (!videoElement || !isViewOnce) {
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return noop;
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}
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if (isAttachmentGIF) {
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return noop;
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}
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videoElement.addEventListener('timeupdate', onTimeUpdate);
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return () => {
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videoElement.removeEventListener('timeupdate', onTimeUpdate);
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};
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}, [isViewOnce, isAttachmentGIF, onTimeUpdate, playVideo, videoElement]);
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const [{ scale, translateX, translateY }, springApi] = useSpring(
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() => INITIAL_IMAGE_TRANSFORM
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);
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const maxBoundsLimiter = useCallback((x: number, y: number): [
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number,
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number
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] => {
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const zoomCache = zoomCacheRef.current;
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if (!zoomCache) {
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return [0, 0];
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}
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const { maxX, maxY } = zoomCache;
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const posX = Math.min(maxX, Math.max(-maxX, x));
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const posY = Math.min(maxY, Math.max(-maxY, y));
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return [posX, posY];
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}, []);
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const positionImage = useCallback(
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(ev: MouseEvent) => {
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const zoomCache = zoomCacheRef.current;
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if (!zoomCache) {
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return;
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}
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const { screenWidth, screenHeight } = zoomCache;
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const offsetX = screenWidth / 2 - ev.clientX;
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const offsetY = screenHeight / 2 - ev.clientY;
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const posX = offsetX * ZOOM_SCALE;
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const posY = offsetY * ZOOM_SCALE;
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const [x, y] = maxBoundsLimiter(posX, posY);
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springApi.start({
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scale: ZOOM_SCALE,
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translateX: x,
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translateY: y,
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});
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},
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[maxBoundsLimiter, springApi]
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);
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const handleTouchStart = useCallback(
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(ev: TouchEvent) => {
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const [touch] = ev.touches;
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dragCacheRef.current = {
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startX: touch.clientX,
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startY: touch.clientY,
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translateX: translateX.get(),
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translateY: translateY.get(),
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};
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},
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[translateY, translateX]
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);
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const handleTouchMove = useCallback(
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(ev: TouchEvent) => {
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const dragCache = dragCacheRef.current;
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if (!dragCache) {
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return;
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}
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const [touch] = ev.touches;
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const deltaX = touch.clientX - dragCache.startX;
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const deltaY = touch.clientY - dragCache.startY;
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const x = dragCache.translateX + deltaX;
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const y = dragCache.translateY + deltaY;
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springApi.start({
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scale: ZOOM_SCALE,
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translateX: x,
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translateY: y,
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});
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},
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[springApi]
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);
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const zoomButtonHandler = useCallback(
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(ev: React.MouseEvent<HTMLButtonElement, MouseEvent>) => {
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ev.preventDefault();
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ev.stopPropagation();
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const imageNode = imageRef.current;
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const animateNode = animateRef.current;
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if (!imageNode || !animateNode) {
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return;
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}
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if (!isZoomed) {
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zoomCacheRef.current = {
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maxX: imageNode.offsetWidth,
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maxY: imageNode.offsetHeight,
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screenHeight: window.innerHeight,
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screenWidth: window.innerWidth,
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};
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const {
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height,
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left,
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top,
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width,
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} = animateNode.getBoundingClientRect();
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const offsetX = ev.clientX - left - width / 2;
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const offsetY = ev.clientY - top - height / 2;
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const posX = -offsetX * ZOOM_SCALE + translateX.get();
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const posY = -offsetY * ZOOM_SCALE + translateY.get();
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const [x, y] = maxBoundsLimiter(posX, posY);
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springApi.start({
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scale: ZOOM_SCALE,
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translateX: x,
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translateY: y,
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});
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setIsZoomed(true);
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} else {
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springApi.start(INITIAL_IMAGE_TRANSFORM);
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setIsZoomed(false);
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}
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},
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[isZoomed, maxBoundsLimiter, translateX, translateY, springApi]
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);
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useEffect(() => {
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const animateNode = animateRef.current;
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let hasListener = false;
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if (animateNode && isZoomed) {
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hasListener = true;
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document.addEventListener('mousemove', positionImage);
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document.addEventListener('touchmove', handleTouchMove);
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document.addEventListener('touchstart', handleTouchStart);
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}
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return () => {
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if (hasListener) {
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document.removeEventListener('mousemove', positionImage);
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document.removeEventListener('touchmove', handleTouchMove);
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document.removeEventListener('touchstart', handleTouchStart);
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}
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};
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}, [handleTouchMove, handleTouchStart, isZoomed, positionImage]);
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const caption = attachment?.caption;
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let content: JSX.Element;
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if (!contentType) {
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content = <>{children}</>;
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} else {
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const isImageTypeSupported = GoogleChrome.isImageTypeSupported(contentType);
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const isVideoTypeSupported = GoogleChrome.isVideoTypeSupported(contentType);
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const isUnsupportedImageType =
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!isImageTypeSupported && isImage(contentType);
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const isUnsupportedVideoType =
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!isVideoTypeSupported && isVideo(contentType);
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if (isImageTypeSupported) {
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if (objectURL) {
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content = (
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<button
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className="Lightbox__zoom-button"
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onClick={zoomButtonHandler}
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type="button"
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>
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<img
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alt={i18n('lightboxImageAlt')}
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className="Lightbox__object"
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onContextMenu={(ev: React.MouseEvent<HTMLImageElement>) => {
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// These are the only image types supported by Electron's NativeImage
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if (
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ev &&
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contentType !== IMAGE_PNG &&
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!/image\/jpe?g/g.test(contentType)
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) {
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ev.preventDefault();
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}
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}}
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src={objectURL}
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ref={imageRef}
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/>
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</button>
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);
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} else {
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content = (
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<button
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aria-label={i18n('lightboxImageAlt')}
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className={classNames({
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Lightbox__object: true,
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Lightbox__unsupported: true,
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'Lightbox__unsupported--missing': true,
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})}
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onClick={onClose}
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type="button"
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/>
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);
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}
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} else if (isVideoTypeSupported) {
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const shouldLoop = loop || isAttachmentGIF || isViewOnce;
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content = (
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<video
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className="Lightbox__object"
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controls={!shouldLoop}
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key={objectURL}
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loop={shouldLoop}
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ref={setVideoElement}
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>
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<source src={objectURL} />
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</video>
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);
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} else if (isUnsupportedImageType || isUnsupportedVideoType) {
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content = (
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<button
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aria-label={i18n('unsupportedAttachment')}
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className={classNames({
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Lightbox__object: true,
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Lightbox__unsupported: true,
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'Lightbox__unsupported--image': isUnsupportedImageType,
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'Lightbox__unsupported--video': isUnsupportedVideoType,
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})}
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onClick={onClose}
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type="button"
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/>
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);
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} else {
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log.info('Lightbox: Unexpected content type', { contentType });
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content = (
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<button
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aria-label={i18n('unsupportedAttachment')}
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className="Lightbox__object Lightbox__unsupported Lightbox__unsupported--file"
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onClick={onClose}
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type="button"
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/>
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);
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}
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}
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const hasNext = !isZoomed && selectedIndex < media.length - 1;
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const hasPrevious = !isZoomed && selectedIndex > 0;
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return root
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? createPortal(
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<div
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className={classNames('Lightbox Lightbox__container', {
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'Lightbox__container--zoom': isZoomed,
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})}
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onClick={(event: React.MouseEvent<HTMLDivElement>) => {
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event.stopPropagation();
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event.preventDefault();
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close();
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}}
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onKeyUp={(event: React.KeyboardEvent<HTMLDivElement>) => {
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if (
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(containerRef && event.target !== containerRef.current) ||
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event.keyCode !== 27
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) {
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return;
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}
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close();
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}}
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ref={containerRef}
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role="presentation"
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>
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<div className="Lightbox__animated">
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<div
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className="Lightbox__main-container"
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tabIndex={-1}
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ref={focusRef}
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>
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<div className="Lightbox__header">
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{getConversation ? (
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<LightboxHeader
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getConversation={getConversation}
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i18n={i18n}
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message={message}
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/>
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) : (
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<div />
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)}
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<div className="Lightbox__controls">
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{onForward ? (
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<button
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aria-label={i18n('forwardMessage')}
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className="Lightbox__button Lightbox__button--forward"
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onClick={handleForward}
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type="button"
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/>
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) : null}
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{onSave ? (
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<button
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aria-label={i18n('save')}
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className="Lightbox__button Lightbox__button--save"
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onClick={handleSave}
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type="button"
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/>
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) : null}
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<button
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aria-label={i18n('close')}
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className="Lightbox__button Lightbox__button--close"
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onClick={close}
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type="button"
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/>
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</div>
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</div>
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<animated.div
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className={classNames('Lightbox__object--container', {
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'Lightbox__object--container--zoom': isZoomed,
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})}
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ref={animateRef}
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style={{
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transform: to(
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[scale, translateX, translateY],
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(s, x, y) => `translate(${x}px, ${y}px) scale(${s})`
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),
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}}
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>
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{content}
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</animated.div>
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{hasPrevious && (
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<div className="Lightbox__nav-prev">
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<button
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aria-label={i18n('previous')}
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className="Lightbox__button Lightbox__button--previous"
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onClick={onPrevious}
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type="button"
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/>
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</div>
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)}
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{hasNext && (
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<div className="Lightbox__nav-next">
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<button
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aria-label={i18n('next')}
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className="Lightbox__button Lightbox__button--next"
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onClick={onNext}
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type="button"
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/>
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</div>
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)}
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</div>
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<div className="Lightbox__footer">
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{isViewOnce && videoTime ? (
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<div className="Lightbox__timestamp">
|
|
{formatDuration(videoTime)}
|
|
</div>
|
|
) : null}
|
|
{caption ? (
|
|
<div className="Lightbox__caption">{caption}</div>
|
|
) : null}
|
|
{media.length > 1 && (
|
|
<div className="Lightbox__thumbnails--container">
|
|
<div
|
|
className="Lightbox__thumbnails"
|
|
style={{
|
|
marginLeft:
|
|
0 - (selectedIndex * 64 + selectedIndex * 8 + 32),
|
|
}}
|
|
>
|
|
{media.map((item, index) => (
|
|
<button
|
|
className={classNames({
|
|
Lightbox__thumbnail: true,
|
|
'Lightbox__thumbnail--selected':
|
|
index === selectedIndex,
|
|
})}
|
|
key={item.thumbnailObjectUrl}
|
|
type="button"
|
|
onClick={(
|
|
event: React.MouseEvent<HTMLButtonElement, MouseEvent>
|
|
) => {
|
|
event.stopPropagation();
|
|
event.preventDefault();
|
|
|
|
setSelectedIndex(index);
|
|
}}
|
|
>
|
|
{item.thumbnailObjectUrl ? (
|
|
<img
|
|
alt={i18n('lightboxImageAlt')}
|
|
src={item.thumbnailObjectUrl}
|
|
/>
|
|
) : (
|
|
<div className="Lightbox__thumbnail--unavailable" />
|
|
)}
|
|
</button>
|
|
))}
|
|
</div>
|
|
</div>
|
|
)}
|
|
</div>
|
|
</div>
|
|
</div>,
|
|
root
|
|
)
|
|
: null;
|
|
}
|
|
|
|
function LightboxHeader({
|
|
getConversation,
|
|
i18n,
|
|
message,
|
|
}: {
|
|
getConversation: (id: string) => ConversationType;
|
|
i18n: LocalizerType;
|
|
message: MessageAttributesType;
|
|
}): JSX.Element {
|
|
const conversation = getConversation(message.conversationId);
|
|
|
|
return (
|
|
<div className="Lightbox__header--container">
|
|
<div className="Lightbox__header--avatar">
|
|
<Avatar
|
|
acceptedMessageRequest={conversation.acceptedMessageRequest}
|
|
avatarPath={conversation.avatarPath}
|
|
color={conversation.color}
|
|
conversationType={conversation.type}
|
|
i18n={i18n}
|
|
isMe={conversation.isMe}
|
|
name={conversation.name}
|
|
phoneNumber={conversation.e164}
|
|
profileName={conversation.profileName}
|
|
sharedGroupNames={conversation.sharedGroupNames}
|
|
size={AvatarSize.THIRTY_TWO}
|
|
title={conversation.title}
|
|
unblurredAvatarPath={conversation.unblurredAvatarPath}
|
|
/>
|
|
</div>
|
|
<div className="Lightbox__header--content">
|
|
<div className="Lightbox__header--name">{conversation.title}</div>
|
|
<div className="Lightbox__header--timestamp">
|
|
{moment(message.received_at_ms).format('L LT')}
|
|
</div>
|
|
</div>
|
|
</div>
|
|
);
|
|
}
|