mastodon-glitch/app/javascript/mastodon/components/media_gallery.jsx

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import PropTypes from 'prop-types';
import { PureComponent } from 'react';
import { FormattedMessage } from 'react-intl';
import classNames from 'classnames';
import { is } from 'immutable';
import ImmutablePropTypes from 'react-immutable-proptypes';
import { debounce } from 'lodash';
import { Blurhash } from 'mastodon/components/blurhash';
import { autoPlayGif, displayMedia, useBlurhash } from '../initial_state';
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class Item extends PureComponent {
static propTypes = {
attachment: ImmutablePropTypes.map.isRequired,
lang: PropTypes.string,
standalone: PropTypes.bool,
index: PropTypes.number.isRequired,
size: PropTypes.number.isRequired,
onClick: PropTypes.func.isRequired,
displayWidth: PropTypes.number,
visible: PropTypes.bool.isRequired,
autoplay: PropTypes.bool,
};
static defaultProps = {
standalone: false,
index: 0,
size: 1,
};
state = {
loaded: false,
};
handleMouseEnter = (e) => {
if (this.hoverToPlay()) {
e.target.play();
}
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};
handleMouseLeave = (e) => {
if (this.hoverToPlay()) {
e.target.pause();
e.target.currentTime = 0;
}
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};
getAutoPlay() {
return this.props.autoplay || autoPlayGif;
}
hoverToPlay () {
const { attachment } = this.props;
return !this.getAutoPlay() && attachment.get('type') === 'gifv';
}
handleClick = (e) => {
const { index, onClick } = this.props;
if (e.button === 0 && !(e.ctrlKey || e.metaKey)) {
if (this.hoverToPlay()) {
e.target.pause();
e.target.currentTime = 0;
}
e.preventDefault();
onClick(index);
}
e.stopPropagation();
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};
handleImageLoad = () => {
this.setState({ loaded: true });
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};
render () {
const { attachment, lang, index, size, standalone, displayWidth, visible } = this.props;
let badges = [], thumbnail;
let width = 50;
let height = 100;
if (size === 1) {
width = 100;
}
if (size === 4 || (size === 3 && index > 0)) {
height = 50;
}
if (attachment.get('description')?.length > 0) {
badges.push(<span key='alt' className='media-gallery__alt__label'>ALT</span>);
}
const description = attachment.getIn(['translation', 'description']) || attachment.get('description');
if (attachment.get('type') === 'unknown') {
return (
<div className={classNames('media-gallery__item', { standalone, 'media-gallery__item--tall': height === 100, 'media-gallery__item--wide': width === 100 })} key={attachment.get('id')}>
<a className='media-gallery__item-thumbnail' href={attachment.get('remote_url') || attachment.get('url')} style={{ cursor: 'pointer' }} title={description} lang={lang} target='_blank' rel='noopener noreferrer'>
<Blurhash
hash={attachment.get('blurhash')}
className='media-gallery__preview'
dummy={!useBlurhash}
/>
</a>
</div>
);
} else if (attachment.get('type') === 'image') {
const previewUrl = attachment.get('preview_url');
const previewWidth = attachment.getIn(['meta', 'small', 'width']);
const originalUrl = attachment.get('url');
const originalWidth = attachment.getIn(['meta', 'original', 'width']);
const hasSize = typeof originalWidth === 'number' && typeof previewWidth === 'number';
const srcSet = hasSize ? `${originalUrl} ${originalWidth}w, ${previewUrl} ${previewWidth}w` : null;
const sizes = hasSize && (displayWidth > 0) ? `${displayWidth * (width / 100)}px` : null;
const focusX = attachment.getIn(['meta', 'focus', 'x']) || 0;
const focusY = attachment.getIn(['meta', 'focus', 'y']) || 0;
const x = ((focusX / 2) + .5) * 100;
const y = ((focusY / -2) + .5) * 100;
thumbnail = (
<a
className='media-gallery__item-thumbnail'
href={attachment.get('remote_url') || originalUrl}
onClick={this.handleClick}
target='_blank'
rel='noopener noreferrer'
>
<img
src={previewUrl}
srcSet={srcSet}
sizes={sizes}
alt={description}
title={description}
lang={lang}
style={{ objectPosition: `${x}% ${y}%` }}
onLoad={this.handleImageLoad}
/>
</a>
);
} else if (attachment.get('type') === 'gifv') {
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const autoPlay = this.getAutoPlay();
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badges.push(<span key='gif' className='media-gallery__gifv__label'>GIF</span>);
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thumbnail = (
<div className={classNames('media-gallery__gifv', { autoplay: autoPlay })}>
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<video
className='media-gallery__item-gifv-thumbnail'
aria-label={description}
title={description}
lang={lang}
role='application'
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src={attachment.get('url')}
onClick={this.handleClick}
onMouseEnter={this.handleMouseEnter}
onMouseLeave={this.handleMouseLeave}
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autoPlay={autoPlay}
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playsInline
loop
muted
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/>
</div>
);
}
return (
<div className={classNames('media-gallery__item', { standalone, 'media-gallery__item--tall': height === 100, 'media-gallery__item--wide': width === 100 })} key={attachment.get('id')}>
<Blurhash
hash={attachment.get('blurhash')}
dummy={!useBlurhash}
className={classNames('media-gallery__preview', {
'media-gallery__preview--hidden': visible && this.state.loaded,
})}
/>
{visible && thumbnail}
{badges && (
<div className='media-gallery__item__badges'>
{badges}
</div>
)}
</div>
);
}
}
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class MediaGallery extends PureComponent {
static propTypes = {
sensitive: PropTypes.bool,
media: ImmutablePropTypes.list.isRequired,
lang: PropTypes.string,
size: PropTypes.object,
height: PropTypes.number.isRequired,
onOpenMedia: PropTypes.func.isRequired,
defaultWidth: PropTypes.number,
cacheWidth: PropTypes.func,
visible: PropTypes.bool,
autoplay: PropTypes.bool,
onToggleVisibility: PropTypes.func,
};
state = {
visible: this.props.visible !== undefined ? this.props.visible : (displayMedia !== 'hide_all' && !this.props.sensitive || displayMedia === 'show_all'),
width: this.props.defaultWidth,
};
componentDidMount () {
window.addEventListener('resize', this.handleResize, { passive: true });
}
componentWillUnmount () {
window.removeEventListener('resize', this.handleResize);
}
UNSAFE_componentWillReceiveProps (nextProps) {
if (!is(nextProps.media, this.props.media) && nextProps.visible === undefined) {
this.setState({ visible: displayMedia !== 'hide_all' && !nextProps.sensitive || displayMedia === 'show_all' });
} else if (!is(nextProps.visible, this.props.visible) && nextProps.visible !== undefined) {
this.setState({ visible: nextProps.visible });
}
}
handleResize = debounce(() => {
if (this.node) {
this._setDimensions();
}
}, 250, {
trailing: true,
});
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handleOpen = () => {
if (this.props.onToggleVisibility) {
this.props.onToggleVisibility();
} else {
this.setState({ visible: !this.state.visible });
}
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};
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handleClick = (index) => {
this.props.onOpenMedia(this.props.media, index, this.props.lang);
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};
handleRef = c => {
this.node = c;
if (this.node) {
this._setDimensions();
}
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};
_setDimensions () {
const width = this.node.offsetWidth;
// offsetWidth triggers a layout, so only calculate when we need to
if (this.props.cacheWidth) {
this.props.cacheWidth(width);
}
this.setState({
width: width,
});
}
isFullSizeEligible() {
const { media } = this.props;
return media.size === 1 && media.getIn([0, 'meta', 'small', 'aspect']);
}
render () {
const { media, lang, sensitive, defaultWidth, autoplay } = this.props;
const { visible } = this.state;
const width = this.state.width || defaultWidth;
let children, spoilerButton;
const style = {};
if (this.isFullSizeEligible()) {
style.aspectRatio = `${this.props.media.getIn([0, 'meta', 'small', 'aspect'])}`;
} else {
style.aspectRatio = '3 / 2';
}
const size = media.size;
const uncached = media.every(attachment => attachment.get('type') === 'unknown');
if (this.isFullSizeEligible()) {
children = <Item standalone autoplay={autoplay} onClick={this.handleClick} attachment={media.get(0)} lang={lang} displayWidth={width} visible={visible} />;
} else {
children = media.map((attachment, i) => <Item key={attachment.get('id')} autoplay={autoplay} onClick={this.handleClick} attachment={attachment} index={i} lang={lang} size={size} displayWidth={width} visible={visible || uncached} />);
}
if (uncached) {
spoilerButton = (
<button type='button' disabled className='spoiler-button__overlay'>
<span className='spoiler-button__overlay__label'>
<FormattedMessage id='status.uncached_media_warning' defaultMessage='Preview not available' />
<span className='spoiler-button__overlay__action'><FormattedMessage id='status.media.open' defaultMessage='Click to open' /></span>
</span>
</button>
);
} else if (!visible) {
spoilerButton = (
<button type='button' onClick={this.handleOpen} className='spoiler-button__overlay'>
<span className='spoiler-button__overlay__label'>
{sensitive ? <FormattedMessage id='status.sensitive_warning' defaultMessage='Sensitive content' /> : <FormattedMessage id='status.media_hidden' defaultMessage='Media hidden' />}
<span className='spoiler-button__overlay__action'><FormattedMessage id='status.media.show' defaultMessage='Click to show' /></span>
</span>
</button>
);
}
return (
<div className={`media-gallery media-gallery--layout-${size}`} style={style} ref={this.handleRef}>
{(!visible || uncached) && (
<div className={classNames('spoiler-button', { 'spoiler-button--click-thru': uncached })}>
{spoilerButton}
</div>
)}
{children}
{(visible && !uncached) && (
<div className='media-gallery__actions'>
<button className='media-gallery__actions__pill' onClick={this.handleOpen}><FormattedMessage id='media_gallery.hide' defaultMessage='Hide' /></button>
</div>
)}
</div>
);
}
}
export default MediaGallery;