529 lines
12 KiB
TypeScript
529 lines
12 KiB
TypeScript
// Copyright 2018-2020 Signal Messenger, LLC
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// SPDX-License-Identifier: AGPL-3.0-only
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import React from 'react';
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import classNames from 'classnames';
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import is from '@sindresorhus/is';
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import * as GoogleChrome from '../util/GoogleChrome';
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import * as MIME from '../types/MIME';
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import { formatDuration } from '../util/formatDuration';
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import { LocalizerType } from '../types/Util';
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const Colors = {
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ICON_SECONDARY: '#b9b9b9',
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};
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const colorSVG = (url: string, color: string) => {
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return {
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WebkitMask: `url(${url}) no-repeat center`,
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WebkitMaskSize: '100%',
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backgroundColor: color,
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};
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};
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export type Props = {
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close: () => void;
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contentType: MIME.MIMEType | undefined;
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i18n: LocalizerType;
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objectURL: string;
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caption?: string;
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isViewOnce: boolean;
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loop?: boolean;
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onNext?: () => void;
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onPrevious?: () => void;
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onSave?: () => void;
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};
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type State = {
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videoTime?: number;
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};
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const CONTROLS_WIDTH = 50;
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const CONTROLS_SPACING = 10;
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const styles = {
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container: {
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display: 'flex',
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flexDirection: 'column',
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position: 'absolute',
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left: 0,
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right: 0,
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top: 0,
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bottom: 0,
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backgroundColor: 'rgba(0, 0, 0, 0.9)',
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} as React.CSSProperties,
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buttonContainer: {
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backgroundColor: 'transparent',
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border: 'none',
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display: 'flex',
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flexDirection: 'column',
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outline: 'none',
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width: '100%',
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padding: 0,
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} as React.CSSProperties,
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mainContainer: {
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display: 'flex',
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flexDirection: 'row',
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flexGrow: 1,
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paddingTop: 40,
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paddingLeft: 40,
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paddingRight: 40,
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paddingBottom: 0,
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// To ensure that a large image doesn't overflow the flex layout
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minHeight: '50px',
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outline: 'none',
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} as React.CSSProperties,
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objectContainer: {
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position: 'relative',
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flexGrow: 1,
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display: 'inline-flex',
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justifyContent: 'center',
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} as React.CSSProperties,
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object: {
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flexGrow: 1,
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flexShrink: 1,
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maxWidth: '100%',
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maxHeight: '100%',
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objectFit: 'contain',
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outline: 'none',
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} as React.CSSProperties,
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img: {
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position: 'absolute',
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left: '50%',
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top: '50%',
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transform: 'translate(-50%, -50%)',
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width: 'auto',
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height: 'auto',
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maxWidth: '100%',
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maxHeight: '100%',
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objectFit: 'contain',
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outline: 'none',
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} as React.CSSProperties,
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caption: {
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position: 'absolute',
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bottom: 0,
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left: 0,
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right: 0,
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textAlign: 'center',
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color: 'white',
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fontWeight: 'bold',
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textShadow: '0 0 1px black, 0 0 2px black, 0 0 3px black, 0 0 4px black',
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padding: '1em',
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paddingLeft: '3em',
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paddingRight: '3em',
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backgroundColor: 'rgba(192, 192, 192, .20)',
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} as React.CSSProperties,
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controlsOffsetPlaceholder: {
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width: CONTROLS_WIDTH,
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marginRight: CONTROLS_SPACING,
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flexShrink: 0,
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},
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controls: {
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width: CONTROLS_WIDTH,
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flexShrink: 0,
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display: 'flex',
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flexDirection: 'column',
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marginLeft: CONTROLS_SPACING,
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} as React.CSSProperties,
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navigationContainer: {
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flexShrink: 0,
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display: 'flex',
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flexDirection: 'row',
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justifyContent: 'center',
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padding: 10,
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} as React.CSSProperties,
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saveButton: {
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marginTop: 10,
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},
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countdownContainer: {
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padding: 8,
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},
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iconButtonPlaceholder: {
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// Dimensions match `.iconButton`:
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display: 'inline-block',
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width: 50,
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height: 50,
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},
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timestampPill: {
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borderRadius: '15px',
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backgroundColor: '#000000',
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color: '#eeefef',
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fontSize: '16px',
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letterSpacing: '0px',
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lineHeight: '18px',
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// This cast is necessary or typescript chokes
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textAlign: 'center' as const,
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padding: '6px',
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paddingLeft: '18px',
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paddingRight: '18px',
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},
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};
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type IconButtonProps = {
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i18n: LocalizerType;
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onClick?: () => void;
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style?: React.CSSProperties;
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type: 'save' | 'close' | 'previous' | 'next';
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};
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const IconButton = ({ i18n, onClick, style, type }: IconButtonProps) => {
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const clickHandler = (event: React.MouseEvent<HTMLButtonElement>): void => {
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event.preventDefault();
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if (!onClick) {
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return;
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}
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onClick();
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};
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return (
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<button
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onClick={clickHandler}
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className={classNames('iconButton', type)}
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style={style}
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aria-label={i18n(type)}
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type="button"
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/>
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);
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};
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const IconButtonPlaceholder = () => (
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<div style={styles.iconButtonPlaceholder} />
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);
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const Icon = ({
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i18n,
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onClick,
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url,
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}: {
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i18n: LocalizerType;
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onClick: (event: React.MouseEvent<HTMLButtonElement>) => void;
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url: string;
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}) => (
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<button
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style={{
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...styles.object,
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...colorSVG(url, Colors.ICON_SECONDARY),
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maxWidth: 200,
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}}
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onClick={onClick}
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aria-label={i18n('unsupportedAttachment')}
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type="button"
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/>
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);
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export class Lightbox extends React.Component<Props, State> {
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public readonly containerRef = React.createRef<HTMLDivElement>();
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public readonly videoRef = React.createRef<HTMLVideoElement>();
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public readonly focusRef = React.createRef<HTMLDivElement>();
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public previousFocus: HTMLElement | null = null;
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public constructor(props: Props) {
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super(props);
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this.state = {};
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}
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public componentDidMount(): void {
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this.previousFocus = document.activeElement as HTMLElement;
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const { isViewOnce } = this.props;
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const useCapture = true;
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document.addEventListener('keydown', this.onKeyDown, useCapture);
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const video = this.getVideo();
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if (video && isViewOnce) {
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video.addEventListener('timeupdate', this.onTimeUpdate);
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}
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// Wait until we're added to the DOM. ConversationView first creates this view, then
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// appends its elements into the DOM.
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setTimeout(() => {
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this.playVideo();
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if (this.focusRef && this.focusRef.current) {
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this.focusRef.current.focus();
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}
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});
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}
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public componentWillUnmount(): void {
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if (this.previousFocus && this.previousFocus.focus) {
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this.previousFocus.focus();
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}
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const { isViewOnce } = this.props;
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const useCapture = true;
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document.removeEventListener('keydown', this.onKeyDown, useCapture);
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const video = this.getVideo();
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if (video && isViewOnce) {
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video.removeEventListener('timeupdate', this.onTimeUpdate);
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}
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}
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public getVideo(): HTMLVideoElement | null {
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if (!this.videoRef) {
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return null;
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}
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const { current } = this.videoRef;
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if (!current) {
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return null;
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}
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return current;
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}
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public playVideo(): void {
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const video = this.getVideo();
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if (!video) {
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return;
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}
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if (video.paused) {
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video.play();
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} else {
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video.pause();
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}
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}
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public render(): JSX.Element {
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const {
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caption,
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contentType,
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i18n,
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isViewOnce,
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loop = false,
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objectURL,
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onNext,
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onPrevious,
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onSave,
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} = this.props;
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const { videoTime } = this.state;
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return (
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<div
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className="module-lightbox"
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style={styles.container}
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onClick={this.onContainerClick}
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onKeyUp={this.onContainerKeyUp}
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ref={this.containerRef}
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role="presentation"
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>
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<div style={styles.mainContainer} tabIndex={-1} ref={this.focusRef}>
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<div style={styles.controlsOffsetPlaceholder} />
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<div style={styles.objectContainer}>
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{!is.undefined(contentType)
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? this.renderObject({
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objectURL,
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contentType,
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i18n,
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isViewOnce,
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loop,
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})
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: null}
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{caption ? <div style={styles.caption}>{caption}</div> : null}
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</div>
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<div style={styles.controls}>
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<IconButton i18n={i18n} type="close" onClick={this.onClose} />
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{onSave ? (
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<IconButton
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i18n={i18n}
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type="save"
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onClick={onSave}
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style={styles.saveButton}
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/>
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) : null}
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</div>
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</div>
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{isViewOnce && videoTime && is.number(videoTime) ? (
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<div style={styles.navigationContainer}>
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<div style={styles.timestampPill}>{formatDuration(videoTime)}</div>
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</div>
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) : (
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<div style={styles.navigationContainer}>
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{onPrevious ? (
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<IconButton i18n={i18n} type="previous" onClick={onPrevious} />
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) : (
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<IconButtonPlaceholder />
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)}
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{onNext ? (
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<IconButton i18n={i18n} type="next" onClick={onNext} />
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) : (
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<IconButtonPlaceholder />
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)}
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</div>
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)}
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</div>
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);
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}
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private readonly renderObject = ({
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objectURL,
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contentType,
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i18n,
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isViewOnce,
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loop,
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}: {
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objectURL: string;
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contentType: MIME.MIMEType;
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i18n: LocalizerType;
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isViewOnce: boolean;
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loop: boolean;
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}) => {
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const isImageTypeSupported = GoogleChrome.isImageTypeSupported(contentType);
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if (isImageTypeSupported) {
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return (
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<button
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type="button"
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style={styles.buttonContainer}
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onClick={this.onObjectClick}
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>
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<img
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alt={i18n('lightboxImageAlt')}
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style={styles.img}
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src={objectURL}
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onContextMenu={this.onContextMenu}
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/>
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</button>
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);
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}
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const isVideoTypeSupported = GoogleChrome.isVideoTypeSupported(contentType);
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if (isVideoTypeSupported) {
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return (
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<video
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ref={this.videoRef}
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loop={loop || isViewOnce}
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controls={!loop && !isViewOnce}
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style={styles.object}
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key={objectURL}
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>
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<source src={objectURL} />
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</video>
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);
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}
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const isUnsupportedImageType =
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!isImageTypeSupported && MIME.isImage(contentType);
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const isUnsupportedVideoType =
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!isVideoTypeSupported && MIME.isVideo(contentType);
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if (isUnsupportedImageType || isUnsupportedVideoType) {
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const iconUrl = isUnsupportedVideoType
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? 'images/movie.svg'
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: 'images/image.svg';
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return <Icon i18n={i18n} url={iconUrl} onClick={this.onObjectClick} />;
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}
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window.log.info('Lightbox: Unexpected content type', { contentType });
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return (
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<Icon i18n={i18n} onClick={this.onObjectClick} url="images/file.svg" />
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);
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};
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private readonly onContextMenu = (
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event: React.MouseEvent<HTMLImageElement>
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) => {
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const { contentType = '' } = this.props;
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// These are the only image types supported by Electron's NativeImage
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if (
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event &&
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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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event.preventDefault();
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}
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};
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private readonly onClose = () => {
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const { close } = this.props;
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if (!close) {
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return;
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}
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close();
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};
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private readonly onTimeUpdate = () => {
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const video = this.getVideo();
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if (!video) {
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return;
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}
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this.setState({
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videoTime: video.currentTime,
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});
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};
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private readonly onKeyDown = (event: KeyboardEvent) => {
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const { onNext, onPrevious } = this.props;
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switch (event.key) {
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case 'Escape':
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this.onClose();
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event.preventDefault();
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event.stopPropagation();
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break;
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case 'ArrowLeft':
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if (onPrevious) {
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onPrevious();
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event.preventDefault();
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event.stopPropagation();
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}
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break;
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case 'ArrowRight':
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if (onNext) {
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onNext();
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event.preventDefault();
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event.stopPropagation();
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}
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break;
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default:
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}
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};
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private readonly onContainerClick = (
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event: React.MouseEvent<HTMLDivElement>
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) => {
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if (this.containerRef && event.target !== this.containerRef.current) {
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return;
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}
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this.onClose();
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};
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private readonly onContainerKeyUp = (
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event: React.KeyboardEvent<HTMLDivElement>
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) => {
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if (
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(this.containerRef && event.target !== this.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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this.onClose();
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};
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private readonly onObjectClick = (
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event: React.MouseEvent<HTMLAnchorElement | HTMLButtonElement>
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) => {
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event.stopPropagation();
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this.onClose();
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};
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}
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